What is the result of subtracting the second equation from the first -2x+7y=-5 -2x-4y=6

Slope = change in y over change in x:

Slope = (-6 6) / 2- -6) = -3/2

Equation of a line is y = Mx + b, where m is the slope and b is the y intercept.

Y = -3/2x + b

Replace y and x with one of the given points and solve for b:

6 = -3/2(-6) + b

6 = -9 + b

B = -9 + 6

B = -3

The equation of the line is y = -3/2x-3

Answer:

The length of segment DA is 15 units

Step-by-step explanation:

Let us use this rule to solve the question

In Δ AEC

∵ D is the midpoint of EC

∴ AD is a median

∵ B is the midpoint of AC

∴ EB is a median

∵ F is the midpoint of AE

∴ CF is a median

→ The three medians intersected at a point inside the triangle,

   let us called it M

∵ AD ∩ EB ∩ CF at M

∴ M is the point of intersection of the medians of Δ AEC

→ By using the rule above

∴ AD = 3 MD

∵ MD = 5

∴ AD = 3(5)

∴ AD = 15 units

Answer:

the answer is 15!! i jus took the test!!!!!!

Step-by-step explanation:

Answer:

(6 / b) - a

Step-by-step explanation:

Subtract a

- a

quotient of 6 and b

6 / b

An expression that is equivalent to the statement Subtract a from the quotient of 6 and B is 6/b - a

Given statement

Subtract a from the quotient of 6 and B

6/B - a

Therefore, the correct option equivalent to the statement is option A) 6/B - a

Learn more about equivalent expression:

https://brainly.com/question/2972832

Answer:

x = -2

Step-by-step explanation:

To solve for x always get x on one side

First add 4 on each side, 4 + 7x - 4 = -18 + 4

Next subtract 18 from 4, making it -14    7x = -14

Now divide 7 on each side, x = -2

Answer:

Polygon 3

Step-by-step explanation:

Out of all the polygons, only 3 is the one that has not been rotated or reflected over X or Y axis.

I am not good in math can

Answer:

Minimum: 8

Maximum: 39

Q1: 11

Q2: 23

Q3: 32

Step-by-step explanation:

Set the numbers into numerical order

8 9 11 14 17 23 29 30 32 32 39

Then separate into quarters

[8 9 11] [14 17 23] [29 30 32] 32 39

The answer is that Point D is Circumcentre and other lengths DE,DF,DG are perpendicular bisectors of sides of triangle ABC

What is Circumcentre?

The point of intersection of Perpendicular bisectors in a triangle is called called Circumcentre.

Solution;

The circumcentre is equidistant from all sides of an triangle when we draw the perpendicular from this point to sides of triangles, the length of all perpendiculars will be same and this is its another property

To learn more about circumcentre click the below link:

https://brainly.com/question/14368399

#SPJ1

Answer:

I think you would have to add 12.5 to the 5

Step-by-step explanation:

\(\huge\mathfrak\red {Answer:}\)

\(\frac{5p}{2} = \frac{25}{4} \\ 5p = \frac{25}{4} \times 2 \\ = > 5p = \frac{25}{2} \\ => p= \frac{25}{2} ÷ 5 \\ p = \frac{25}{2} \times \frac{1}{5} \\ = > p = \frac{5}{2} \\ = 2.5\)

\(\mathfrak\purple {Hope\: this\: helps\: you...}\)

Answer:

the first third fourth and last one Step-by-step explanation: and btw we know your not a girl your just a guy sitting behind a chair messing around with the most helpful website in the world

Step-by-step explanation: #karma

you took my points and didnt even try to put a answer thats why im letting you experience karma treat people the way you wish to be treated

Answer:

7/20

0.35

35%

Step-by-step explanation:

12 year olds: 40%

12 year olds: 25%

11 year olds: 100% - 40% - 25% = 35%

35% = 35/100 = 7/20

35% = 0.35

35% = 35%

the sample space of two-digit numbers using the digits 9, 4, 5, and 8 consists of 16 possible outcomes, and we can list all these outcomes in a table as shown above.

How to solve the question?

To create a sample space of two-digit numbers using the digits 9, 4, 5, and 8, we need to consider all possible combinations of these digits. We can list all possible outcomes in a table where each digit represents a column and each combination represents a row.

The first digit can be any of the four digits, and the second digit can also be any of the four digits, including the same digit as the first. Therefore, the total number of outcomes is 4 x 4 = 16.

Here is the sample space of two-digit numbers using the digits 9, 4, 5, and 8:

         9    4   5     8

9 99 94 95 98

4 49 44 45 48

5 59 54 55 58

8 89 84 85 88

As shown in the table, the first digit can be any of the four digits, and the second digit can also be any of the four digits. For example, the first row shows that the possible two-digit numbers starting with 9 are 99, 94, 95, and 98. Similarly, the second row shows that the possible two-digit numbers starting with 4 are 49, 44, 45, and 48, and so on.

In conclusion, the sample space of two-digit numbers using the digits 9, 4, 5, and 8 consists of 16 possible outcomes, and we can list all these outcomes in a table as shown above.

To know more about digits visit :-

https://brainly.com/question/26856218

#SPJ1

Answer:

I agree 7

Step-by-step explanation:

The correct description that defines the prism square is option B: "Is another hand instrument that is also used to determine or set out right angles."

A prism square is a tool used in construction and woodworking to establish or verify right angles. It consists of a triangular-shaped body with a 90-degree angle and two perpendicular sides. The edges of the prism square are straight and typically have measurement markings. It is commonly used in carpentry, masonry, and other trades where precise right angles are essential for accurate and square construction. Option A describes a different tool involving mirrors set at an angle, which is not related to the prism square. Option C refers to a different instrument used for measuring slopes and is not directly related to the prism square.

Learn more about prism square here:

https://brainly.com/question/24324269

#SPJ11

Answer:

Step-by-step explanation:

that is 55/22 = 2.5 hrs

Answer: .two and a half hours.

Step-by-step explanation:

22/1 = 55/x

22x=55

X=2.5

Evaluating the expression we will get the simpified fraction -2/3, or -0.66 as a decimal.

First, remember that for the quotient between two fractions

(a/b)÷(c/d)

We can rewrite it as:

(a/b)*(d/c)

Now, our expression is:

(1/3)÷(-11/7) + (-15/33)

Now, using the rule above, we can rewrite this as:

(1/3)*(-7/11) + (-15/33)

(-7/33) + (-15/33) = (-7 - 15)/33 = -22/33

Now we can simplify it, divide both numbers by 11.

-22/11 = -2

33/11 = 3

Then:

-22/33 = -2/3 = -0.66

Learn more about fractions at:

https://brainly.com/question/11562149

#SPJ1

Answer:

\((x+4)^{2} = x^{2}+8x+16\)

Step-by-step explanation:

Answer:

In geometry, you will write a line segment using the letters for each of the end points and a line over the top of the letters.

The area of the polygon is solved to be  1044 squared cm

The area of the composite polygon is solved by dividing the object into two sections. Then adding up the areas

Section 1 has dimensions:

length * width = 46 * 14 = 644

section 2 has dimensions:

length = 46 - 21 = 25

width = 30 - 14 = 16

Area = 25 * 16 = 400

Area of the composite figure

section 1  + section 2

= 644 + 400

= 1044 squared cm

Learn more about area at

https://brainly.com/question/2607596

#SPJ1

Answer:

Simplify the expression.

36a to the power of 7 then - 156a to the power of 4 then -15a to the power of3

Answer:

Her father weighs 156 lbs.

Step-by-step explanation:

(2/3)x-5=99

(2/3)x= 104

x=156 lbs

The weight of Jennifer's father is equal to 156 lbs.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Jennifer weighs 99 lb. Her weight is 5 pounds less than two-thirds of her father's weight.

The father's weight will be calculated by forming the expression below,

(2/3)x-5=99

(2/3)x= 104

x=156 lbs

Hence, the father's weight will be 156 lbs.

To know more about an expression follow

https://brainly.com/question/28856247

#SPJ2

Answer:

Step-by-step explanation:

Distance between two points \((x_1,y_1)\) and \((x_2,y_2)\) is given by the formula,

Distance = \(\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}\)

a). A(-6, -4), B(-3, -1)

Distance between A and B = \(\sqrt{(-6+3)^2+(-4+1)^2}\)

                                             = \(\sqrt{9+9}\)

                                             = 3√2

                                             = 4.2 units

b). C(3.5, 1), D(-4, 2.5)

Distance between C and D = \(\sqrt{(3.5+4)^2+(1-2.5)^2}\)

                                              = \(\sqrt{58.5}\)

                                              = 7.65

                                              ≈ 7.7 units

c). Distance between X(5, -5) and Y(-5, 5)

    Distance = \(\sqrt{(5+5)^2+(-5-5)^2}\)

                    = \(\sqrt{200}\)

                    = 10√2

                    = 14.14

                    ≈ 14.1 units

Answer:

1. x = sqrt3 - 4, negative sqrt3 -4

2. x = sqrt13, negative sqrt13

3. x = sqrt7/2 , negative sqrt7/2

4. x = sqrt3/2 - 14, negative sqrt3/2 - 14

Step-by-step explanation:

sqrt = square root

The tip of the minute hand moves in a circle of radius exists 6 in. In 25 minutes, the tip of the minute hand moves 15.7 in

The arc length of a circle can be estimated with the radius and central angle utilizing the arc length formula, Length of an Arc = θ × r, where θ is in radian. Length of an Arc = θ × (π/180) × r, where θ exists in degree.

The tip of the minute hand moves in a circle of radius R = 6in.

We will find that for each case, 15 minutes and 25 minutes, the distance traveled is 9.42 in and 15.7 in correspondingly.

Remember that the length of an arc is defined by an angle θ in a circle of radius R is given by:

L = (θ/360°) × 2 × pi × R

We know that R = 6in.

To find how much the tip of the minute hand moves in 15 minutes.

Then we need to find the angle θ that the tip moves in these 15 minutes.

Remember that a complete rotation in the clock has 60 minutes.

This means that there exists an equivalence:

60 min = 360°

1 = (360°/60 min)

15 min = (15 min) × (360°/60 min) = 90°

Then, in 15 minutes, the tip of the minute hand moves:

L = (90°/360°) × 2 × 3.14 × 6in = 9.42 in

For the case of 25 minutes the procedure is the same:

25 min = (25 min) × (360°/60 min) = 150°

Then, in 25 minutes, the tip of the minute hand moves:

L = (150°/360°) × 2 × 3.14 × 6in = 15.7 in

Therefore, the correct answer is 15.7 in.

The complete question is:

The minute hand of a clock is 6 inches long. how far does the tip of the minute hand move in 15 minutes? how far does it move in 25 minutes? round answers to two decimal places.

To learn more about decimal places refer to:

https://brainly.com/question/28393353

#SPJ13

Answer:

2.5777

Step-by-step explanation:

The 6 in "2.577681" is greater than 5, so the value increases by 1.

Answer:

They are all greater than 1.

Step-by-step explanation:

12+23=35

13+18=31

14+25=39

15+110=125

The sum of Option D is greater than 100 .

Sum is the output of the mathematical operation , "Addition" .

It is given to find the sum of which numbers exceed 100

A. 12 + 23 = 35

B. 13+18 = 31

C. 14+25 = 39

D. 15+110 = 125

The sum of Option D is greater than 100 .

Therefore , Option D is the answer.

The correct question is

Which of these sums is greater than 100?

please help 20 pts if u get it A. 12+23 B. 13+18 C. 14+25 D. 15+110

To know more about Sum

https://brainly.com/question/13013054

#SPJ2

Answer: k = -4

Step-by-step explanation: Hope this helps ^^

Answer: Cumulative frequency distribution

Step-by-step explanation: Not entirely sure but I believe you are looking for this definition based on the question. Hope this helps :)

Answer:

If i go to the park then it will stop raining

Step-by-step explanation:

I think

hope this help have a good night

The expected number of stations that will detect an enemy plane is: E(X) = 60 * 0.55 = 33

The probability of a radar station detecting an enemy plane is 0.55. If 60 stations are in use, the expected number of stations that will detect an enemy plane can be calculated using the formula for the expected value.

The expected value is equal to the product of the total number of trials and the probability of success, or:

E(X) = n * P(X), where

E(X) is the expected value,

n is the number of trials, and

P(X) is the probability of success.

In this case, the number of trials is 60, and the probability of success is 0.55.

Therefore, the expected number of stations that will detect an enemy plane is:

E(X) = 60 * 0.55 = 33

To know more about the probability, visit:

brainly.com/question/30034780

#SPJ11

Answer:

105 grams

Step-by-step explanation:

385/11=35

35 times 3 is 105 grams

Answer:

35 grams

Step-by-step explanation:

3/11= x/385

11x= 385

x= 385/11

= 35 grams