is (1,3) a solution to this system of equations?
4x + 5y = 19
x + 5y = 16
Answers
Answer:
Yes
Step-by-step explanation:
I graphed both of the equations on the graph below to show you that they intersect at the point (1,3), making it the solution to the system.
If this answer is correct, please make me Brainliest!
Answer: Yes
Step-by-step explanation:
Related Questions
VERY EASY, WILL GIVE 50 POINTS FOR CORRECT ANSWER ASAP AND WILL GIVE BRAINLIEST.
Answers
Answer:
Second one
Step-by-step explanation:
Answer:
C. A 90° clockwise rotation about the origin
an object is thrown to the air. the equation for the object's height s at time t seconds approximately 15% each year as shown by a graph. H(t)=-4.9t^2+13.4t+24.9part A: what does the coefficient for the quadratic term represent? part B: what does the coefficient for the linear term represent? part C: what does the constant term represent?
Answers
We have the following:
\(H(t)=-4.9t^2+13.4t+24.9\)A quadratic term is one that has the unknown (x) squared, the linear one is one that only has the literal with exponent 1 and the constant one is only a number with no unknown.
Therefore:
Part A
\(-4.9\)Part B
\(13.4\)Part C
\(24.9\)Which graph and equation shows a proportional relationship between r and y? y= 11.5% y = 1.5x - 1.5
Answers
Answer:
y = 1.5x - 1.5
Step-by-step explanation:
Model and Solve Equations with Geometry Concepts (7.11c) . ... Now substitute the values for x and y into the expression. 2(1. 3. )(1. 2. −3) ... 10.0+1.5 = 11.5.
16 families went on a trip which cost them Rs 2,16,352. How much did each
family pay?
Answers
Given that 16 families went on a trip and the cost of the trip was Rs. 2,16,352.The amount paid by each family is to be determined by unitary method Hence each family paid Rs.13522
Now, let's solve this by using the method of unitary method. To find the cost of 1 family trip, we will divide the total cost of the trip by the number of families.2,16,352 / 16 = 13,522 So, the cost of the trip per family is Rs. 13,522.Hence, each family paid Rs. 13,522 for the trip.
to know more about unitary method
https://brainly.com/question/28276953
Answer:
Step-by-step explanation
1. The total cost of the trip for all 16 families is Rs 2,16,352.
2. To find out how much each family paid, we need to divide the total cost by the number of families: Rs 2,16,352 ÷ 16.
3. When we do the division, we get the result: Rs 13,522.
Now let's check if this result is correct:
1. If each family paid Rs 13,522 for the trip, then the total cost for all 16 families would be: 16 × Rs 13,522 = Rs 2,16,352.
2. This is exactly the same as the total cost given in the problem statement.
So we have shown that each family paid **Rs 13,522** for the trip
a random sample of adults was surveyed about their exercise habits. of the 100 surveyed, 56 stated they exercise regularly. which of the following is the 95% confidence interval for p, the proportion of all adults who exercise regularly? find the z-table here. (0.50, 0.62) (0.48, 0.64) (0.46, 0.66) (0.43, 0.69)
Answers
The 95% confidence interval for p, the proportion of all adults who exercise regularly is (0.46, 0.66).
What is a confidence interval?
An estimated range for an unknown parameter is known as a confidence interval. The 95% confidence level is the most popular, however other levels, such as 90% or 99%, are occasionally used when computing confidence intervals.
Here, we have
Given
Sample size(n) = 100
x = 56
Sample proportion (p) = x/n = 56/100 = 0.56
Here, c = 95%, a = 0.95
1-a = 0.05, a/2 = 0.025
Z(a/2) = 1.96
95% confidence interval for p is:
= p-Z(a/2)√{p(1-p)}/n, p+Z(a/2)√{p(1-p)}/n
= 0.56- 1.96√{0.56(1-0.56)}/100, 0.56+1.96√{0.56(1-0.56)}/100
= 0.56 - 0.0972, 0.56+0.0972
= 0.4628, 0.6572
= (0.46, 0.66)
Hence, the 95% confidence interval for p, the proportion of all adults who exercise regularly is (0.46, 0.66).
To learn more about the confidence interval from the given link
https://brainly.com/question/15712887
#SPJ1
a quadrilateral has diagonals that are perpendicular but not congruent. This quadrilateral could be
Answers
Answer:
Rhombus
Step-by-step explanation:
This could be a rhombus since in a square, the lines are congruent and perpendicular, so we move on to a broader shape, rectangles. the diagonals are congruent but not perpendicular, so we go to rhombus, and in a rhombus the diagonals are not congruent but they are perpendicular.
Please can you help me .and give me the answer
Answers
Answer:
I believe that X=10 .
Step-by-step explanation:
Good luck ^^
The mean age of 5 people in a room is 27 years.
A person enters the room.
The mean age is now 35.
What is the age of the person who entered the room?
Answers
Answer:
main age = total age/total people
if Main age is = 27
\(27 = \frac{ \times }{5} \)
and x = 135
Total age is = 135
then main age is 35
\([35 = \frac{y}{6} \)
and y = 210
first main age - second main age = age of the person participating
210 - 135 = 75
the age is = 75HAVE A NİCE DAY
Step-by-step explanation:
GREETINGS FROM TURKEY
the heptagon ($7$-sided polygon) and hexagon are drawn in plane so that they intersect at a finite number of points. let $n$ be the maximum possible number of points where two polygons can intersect. which one is correct?
Answers
The maximum possible number of points where two polygons can intersect is \($n = 4$\). This is achieved when the two polygons are tangent to each other at four points.
Maximum Intersection Point CountThere are different ways to approach the problem of determining the maximum possible number of points where two polygons can intersect, but one possible method is to use geometric principles and constructive examples. Here is one possible way to do it:
Start with a heptagon and a hexagon that are both regular (i.e., all sides and angles are equal).Place the heptagon in the plane so that one of its vertices coincides with the center of the hexagon.Draw an equilateral triangle with sides of the same length as the heptagon's sides, and one of its vertices at the center of the hexagon.Connect the center of the hexagon to each vertex of the triangle, forming six congruent isosceles triangles.Draw a line segment from the center of the hexagon to the middle point of each side of the heptagon. This divides the heptagon into 14 congruent isosceles triangles.Now, it is clear that the heptagon and hexagon intersect at 4 points.This is a constructive example for showing that the maximum possible number of intersection points between heptagon and hexagon is 4.
Learn more about Maximum Intersection Point Count here:
https://brainly.com/question/23762887
#SPJ4
The product of a number and 7 less than the number is 60. Find the number.
Answers
Either 1, 2, 3, 4, 5, 6,m 7, and 8.
What is the product of 22 and 49
Answers
Answer:
1078
Step-by-step explanation:
Hope this helps
PLEASE HURRY!!!!
Which expression is equivalent to Tangent (StartFraction 3 pi Over 4 EndFraction minus 2 x)?
StartFraction negative 1 minus tangent (2 x) Over 1 minus (negative 1) (tangent (2 x) ) EndFraction
StartFraction negative 1 minus tangent (2 x) Over 1 + (negative 1) (tangent (2 x) ) EndFraction
StartFraction 1 minus tangent (2 x) Over 1 + (1) (tangent (2 x) ) EndFraction
StartFraction 1 + tangent (2 x) Over 1 minus (1) (tangent (2 x) ) EndFraction
Answers
Answer:
B -1-tan(2x)/1+(-1)(tan(2x))
Step-by-step explanation:
Edge 2020
the original expression listed in the question can be simplified to -1+tan(2x)/1-tan(2x). expression B can also be simplified to -1+tan(2x)/1-tan(2x)
The expression equivalent to tan(3π/4 -2x) is -1-tan(2x)/1+(-1)(tan(2x))
What is tangent?It is the trigonometric identity.
Using the trigonometric formula , tan (A-B) = tanA - tanB/ (1+tanA tanB )
tan(3π/4 -2x) = tan(3π/4) - tan2x / 1+ tan(3π/4)tan2x
tan(3π/4 -2x) = -1-tan(2x)/1+(-1)(tan(2x))
Thus, the expression equivalent to tan(3π/4 -2x) is -1-tan(2x)/1+(-1)(tan(2x))
Learn more about tangent.
https://brainly.com/question/10053881
#SPJ5
An investor wants to save money to purchase real estate. She buys an annuity with yearly payments that earn 5.3% interest compounded annually payments will be made at the end of each year find the total value of the annuity in 16 years if each yearly payment is 693.
Answers
The total value of the annuity in 16 years, with yearly payments of $693 and an interest rate of 5.3% compounded annually, is approximately $12,739.62.
To calculate the total value of the annuity in 16 years, we can use the formula for the future value of an annuity:
FV = P * ((1 + r)^n - 1) / r
Where:
FV is the future value of the annuity,
P is the yearly payment,
r is the interest rate per compounding period, and
n is the number of compounding periods.
In this case, the yearly payment (P) is $693, the interest rate (r) is 5.3% or 0.053, and the number of compounding periods (n) is 16.
Let's substitute these values into the formula and calculate the total value of the annuity:
FV = 693 * ((1 + 0.053)^16 - 1) / 0.053
FV = 693 * (1.053^16 - 1) / 0.053
Using a calculator, we can evaluate the expression inside the parentheses:
1.053^16 ≈ 1.9738
Substituting this value back into the formula:
FV = 693 * (1.9738 - 1) / 0.053
FV = 693 * 0.9738 / 0.053
FV ≈ 12739.62
Therefore, the total value of the annuity in 16 years, with yearly payments of $693 and an interest rate of 5.3% compounded annually, is approximately $12,739.62.
for such more question on total value
https://brainly.com/question/27746495
#SPJ8
b. Passes through the point (2, -4) and is parallel to 3x + y = 5
c. Passes through the point (2, -4) and is perpendicular to 3x + y = 5
Answers
keeping in mind that parallel lines have exactly the same slope, let's check for the slope of the equation above
\(3x+y=5\implies y=\stackrel{\stackrel{m}{\downarrow }}{-3}x+5\qquad \impliedby \qquad \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}\)
so we're really looking for the equation of a line that has a slope oif -3 and it passes through (2 , -4)
\((\stackrel{x_1}{2}~,~\stackrel{y_1}{-4})\hspace{10em} \stackrel{slope}{m} ~=~ - 3 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-4)}=\stackrel{m}{- 3}(x-\stackrel{x_1}{2}) \implies y +4 = - 3 ( x -2) \\\\\\ y+4=-3x+6\implies {\Large \begin{array}{llll} y=-3x+2 \end{array}}\)
now, keeping in mind that perpendicular lines have negative reciprocal slopes
\(\stackrel{~\hspace{5em}\textit{perpendicular lines have \underline{negative reciprocal} slopes}~\hspace{5em}} {\stackrel{slope}{ -3 \implies \cfrac{-3}{1}} ~\hfill \stackrel{reciprocal}{\cfrac{1}{-3}} ~\hfill \stackrel{negative~reciprocal}{-\cfrac{1}{-3} \implies \cfrac{1}{ 3 }}}\)
so for this one, we're looking for the equation of a line whose slope is 1/3 and it passes through (2 , -4)
\((\stackrel{x_1}{2}~,~\stackrel{y_1}{-4})\hspace{10em} \stackrel{slope}{m} ~=~ \cfrac{1}{3} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{(-4)}=\stackrel{m}{ \cfrac{1}{3}}(x-\stackrel{x_1}{2}) \implies y +4 = \cfrac{1}{3} ( x -2) \\\\\\ y+4=\cfrac{1}{3}x-\cfrac{2}{3}\implies y=\cfrac{1}{3}x-\cfrac{2}{3}-4\implies {\Large \begin{array}{llll} y=\cfrac{1}{3}x-\cfrac{14}{3} \end{array}}\)
The Centers for disease Control and Prevention Office on Smoking and Health (OSH) is the lead federal agency responsible for comprehensive tobacco prevention and control. OSH was established in 1965 to reduce the death and disease caused by tobacco use and exposure to second-hand smoke. One of the many responsibilities of the OSH is to collect data on tobacco use. The following data show the percentage of adults in the United States who were users of tobacco from 2001 through 2011:
Year Percentage of Adults Who Smoke
1 22.9
2 21.7
3 21
4 20.3
5 20.3
6 19.9
7 19.4
8 20.7
9 20.7
10 19
11 18.8
What type of pattern exists in the data?
Use simple linear regression analysis to find the parameters for the line that minimizes MSE for this time series.
One of OSH’s goals is to cut the percentage of U.S. adults who were users of tobacco to 12% or less within nine years of the last year of these data. Does your regression model suggest that OSH is on target to meet this goal?
Use your model to estimate the number of years that must pass after these data have been collected before OSH will achieve this goal.
Answers
Step 1
Given,
Slope is b0=0.2809
Intercept is b1=21.9945
Let y=the percentage of adults who smoke.
And x=year
Therefore, the regression equation is obtained as-
y=21.9945+0.28...
A polynomial is given below.
3x6 + 2x4 – x3 + 7
Which statement must be true about this polynomial?
Answers
Answer:
Step-by-step explanation:
Well since the polynomial is of not an even or odd sequence like the polynomial in the question is
\(3x^6+2x^4-x^3+7\\\)
like the degree 6 is even the degree 4 is even but the degree 3 is odd so since the sequence breaks the polynomial above has no real x-intercepts meaning it has complex roots.
Multiply (-2-i)(4+I)
Answers
Answer:
Step-by-step explanation:
(-2-i)(4+I)
= (-8-2i-4i-l)
thats it basically since there are two unknowns so it cant be simplified further
Please help :) this is due today
Answers
Answer:
Pretty sure it's 2/3.
explanation
Graph f(x)=−1.5x+6.
Use the line tool and select two points to graph the line.
Answers
Answer: Points (-1 , 7.5), (0 , 6), and (1 , 4.5).
Step-by-step explanation:
A truck with 30-in.-diameter wheels is traveling at 50 mi/h.
Find the angular speed of the wheels in rad/min, "hint convert miles to inches & hours to minutes:
_________rad/min
How many revolutions per minute do the wheels make?
___________rpm
Answers
Answer:
A. the angular speed is 3771.4 rad/min
b. 5921 rpms
Step-by-step explanation: I just got this same question right on a test.
I need help with this please help me
Answers
Answer: A
Step-by-step explanation:
The three angles in a triangle add to \(180^{\circ}\). Therefore, each angle measures \(\frac{180^{\circ}}{3}=60^{\circ}\).
the question is in the picture, pls help quick
Answers
Answer:
please search it up bc i dont know the answer
Step-by-step explanation:
What’s the volume of the prism? length 9 width 18 height 4
A. 324 units3
B. 112 units³
C. 648 units³
D. 226 units³
Answers
Answer:
A. 324 units³
Step-by-step explanation:
You want the volume of a triangular prism with triangle base 9 units, triangle height 4 units, and prism length 18 units.
VolumeThe volume of the triangular prism is the product of its base area and its length:
V = Bl
The base area is the area of a triangle.
B = 1/2bh
Then the volume of the prism is ...
V = (1/2bh)l = 1/2(bhl) = 1/2(9)(4)(18) = 324 . . . . cubic units
The volume of the triangular prism is 324 units³.
__
Additional comment
You will note that this is half the volume of a rectangular prism with the same overall dimensions.
<95141404393>
(5, 5, 6, 9, 9, 11, 13}
This set has two_____
-medians
-means
-modes
Answers
Answer:
modes
Step-by-step explanation:
The only one of the three (median, mode, mean) that there can be more than one for a set is the mode, and in fact it has two modes: 5 and 9.
Answer: modes
On a farm the ratio of grey goats to white is 4:7 there are 160 grey goats. How many white goats are there
Answers
Answer: 88
Step-by-step explanation:
For every 7 grey goats there are 4 white goats. 160/7=22 4*22=88
Hi,my name is tk and this is a trick question what does 190×1,000
Answers
Answer:
Is this a joke? Or do I actually solve this lol
Step-by-step explanation:
Answer:
190,000
Step-by-step explanation:
you multiply 19×1 and then add the four zeros
A researcher wanted to see if different breeds of dogs preferred toys of certain colors. The researcher presented each dog with 3 toys, identical except that each was a different color, and recorded which toy the dog played with the most in a set time period. Here are the outcomes and partial results of a chi-square test (expected counts appear below observed counts):
Answers
The value for the test statistic and the p value on the test when the researcher wanted to see if different breeds of dogs will be x² = 0.9421 and 0.05 < p value < 0.10.
How to illustrate the research?From the information given, the null hypothesis is that the variables have no difference while the alternative hypothesis is that they have a difference.
The degree of freedom will be:
= (3 - 1) × (3 - 1)
= 4
The critical value is 9.4877. In this case, the p value is greater than the significance level. Therefore, we fail to reject the null hypothesis.
Learn more about research on:
https://brainly.com/question/968894
#SPJ1
Answer:
Step-by-step explanation:
From Khan
What is 5+6/7 pls give me an answer now pls
Answers
Which is approximately 5.86 in decimal
i need some help, please
Answers
Answer:
i think probably x = 10
Step-by-step explanation:
sin(60°) = 5√3/x
√3/2 = 5 √3/x
√3 x = 10√3
x = 10
In which quadrant is the point (2, -3) located?
O Quadrant II
O Quadrant IV
0 Quadrant I
Quadrant III
Answers
o Quadrant IV is located in the point (2,_3)
Answer:
Quadrant IV
Step-by-step explanation:
Q I = (+,+)
Q II = (-,+)
Q III = (-,-)
Q IV = (+,-)