a number is squared and the result is 676. find a number.
​

Answer:

i think the answer is b

because,

if x+22=90

x=90-22=68

we know that the sum of the three angles of a triangle is 180

so, that means

90+22+68 should be 180

and it is 180, so the answer must be b

Answer:

A = 2(7) + (1/2)(4)(4 + 9) = 14 + 26 = 40 m²

Answer:

Putting all the x's to one side.

Step-by-step explanation:

By doing this, you would get:

10 = 2.5x

so,

4 = x

Answer:

We subtract 5x from both sides

Step-by-step explanation:

Step 1:  Subtract 5x from both sides

\(5x + 10 = 7.5x\)

\(10 + 5x - 5x = 7.5x - 5x\)

\(10 = 2.5x\)

Step 2:  Divide both sides by 2.5

\(\frac{10}{2.5} = \frac{2.5x}{2.5}\)

\(4 = x\)

Answer:  We subtract 5x from both sides

Answer:

i think that is the second one but im not sure.

Answer:

x = 9

Step-by-step explanation:

(7x + 2)

7x can't be added with 2 because 2 has no x

therefor ,

we take x out

X ( 7 + 2 )

so

X = 9

warning :

sory if the answer is wrong

Answer:

You never put the choices-
How am I supposed to answer if theres no answer choices

Step-by-step explanation:

Given parameters:

Amount made by each computer programmer = $10⁵

Number of computer programmers = 10⁶

Problem;

How much money is this all together  = ?

Solution:

  The total money can be found using;

                   = Amount made by each programmer x number of programmers

                   = $10⁵ x 10⁶

                   = $10¹¹

As a power of ten, the amount made is $10¹¹

In dollar amount  = $100,000,000,000

Answer:

Step-by-step explanation:

The correct answer is (x,y)=(-1,-2.4)

The coordinates are a pair of numbers that, using the horizontal and vertical lines, precisely pinpoint a point's location on a cartesian plane. typically represented by (x, y), the point's x and y values on a graph. Every point or an ordered pair comprises two coordinates.

The x coordinate, also known as the abscissa, is the first, and the y coordinate, also known as the ordinate. Any real number, whether positive or negative, can represent the coordinates of a point.

We have given the point

A(-3,-4) and B(2,0)

(x1,y1)=(-3,-4)

(x2,y2)=(2,0)

As P divided line segment AB in the ratio 2 to 3

m/n=2/3

x=(mx2+nx1)/m+n

x=(2)(2)+(3)(-3)/2+3

x=4-9/5

x=-5/5

x=-1

y=(my2+ny1)/m+n

y=(2)(0)+(3)(-4)/2+3

y=0-12/5

y=-12/5

y=-2.4

(x,y)=(-1,-2.4)

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Answer:

A & D

Step-by-step explanation:

Exponential decay is where the b value (usually the value in parentheses) is less than 1. Anything where that value is less than 1 is decay.

The chi-square statistic is used to determine whether there are differences between two nominally scaled variables. Chi-Square is a statistical test used to compare two nominal variables to determine whether they differ.

The Chi-Square test is used to test for differences between two groups. When you want to compare groups or examine the relationship between two variables, this test is useful. The chi-square test is a method of statistical inference that can be used to compare observed frequencies with expected frequencies, allowing us to determine whether there is a meaningful difference between them. When the p-value obtained from a chi-square test is less than 0.05, it is generally considered statistically significant.

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Answer:

x=19

Step-by-step explanation:

The sum of the three anagles is 180

(5x+4)+(x-2)+(3x+7)=180

5x+x+3x+4-2+7=180

9x+9=180

9(x+1)=180

x+1=20

x=20-1

x=19

Answer:

3/10

Step-by-step explanation:

you do 3/5 times 1/2 which is 3/10

half of 3/5 is 3/10

hope this helps

correct me if this is wrong

Divide the volume of the larger cube by the volume of the smaller cube.

1. (3/7 x 3/7 x 1/7) / (1/7)^3 = 9

Answer: 9

2. (2/6)^3 / (1/6)^2 = 8

Answer: 8

3. (1/3 x 2/3 x 2/3) / (1/6)^3 = 32

Answer: 32

4. (3/7)^3 / (1/7)^3 = 27

Answer: 27

Answer:

x=36

Step-by-step explanation:

(3x+3)^0+x+54= 90

x+54=90

x=90-54

x=36

Answer:

x ≥ 4

Step-by-step explanation:

Start with: 5x - 9 ≥ 11

Add 9 to both sides: 5x - 9 + 9 ≥ 11 + 9

Divide both sides by 5: \(\frac{5x}{5} \geq \frac{20}{5}\)

Simplify: x ≥ 4

Since you are not dividing both sides by a negative number, the greater than or equal to sign faces the same direction.

After using the given data we reach the conclusion that these data provide evidence that the 8% value is inaccurate, furthermore the p-value is higher than the measured level of 0.05. Hence, we have to proceed by rejecting the null hypothesis.
Here we have to implement the null hypothesis in which the population proportion is equal to 8% and the other alternative hypothesis  is not equal to 8%.
The given significance level of 0.05.

Here we take sample size of 195 and the total number of nearsighted children in the sample is 22. Hence, we evaluate the sample proportion

sample proportion = number of nearsighted children / sample size
= 22 / 195 = 0.1128

Now the standard error of the sample proportion is

standard error = √((population proportion x (1 - population proportion)) / sample size)
= √((0.08 x (1 - 0.08)) / 195)
= 0.032

So the test statistic is
test statistic = (sample proportion - population proportion) / standard error
= (0.1128 - 0.08) / 0.032
= 1.025

Here we have to implement the Z-table to find the p-value

p-value = P(Z > test statistic) + P(Z < - test statistic) = P(Z > 1.025) + P(Z < -1.025)
= 0.305


After using the given data we reach the conclusion that these data provide evidence that the 8% value is inaccurate, furthermore the p-value is higher than the measured level of 0.05. Hence, we have to proceed by rejecting the null hypothesis.

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Answer:

Step-by-step explanation:

in x intercepts y is equals to 0

10x = 8

x = 8/10

x = 4/5

in y intercepts x is equals to 0

y = 8

Answer:

Se necesitan 20 toneladas de acero A, mientras que se necesitan 50 toneladas de acero B

Step-by-step explanation:

Deje que la cantidad de acero A sea xy la cantidad de acero B sea y.

Queremos obtener 70 toneladas del nuevo metal, por lo tanto;

x + y = 70 •••••••••• (i)

Ahora, nuestro porcentaje final es del 30%

Esto significa que; x (5%) + y (40%) = 70 (30%)

Esto significa; 0.05x + 0.4y = 21 •••••••• (ii)

Entonces resolvemos ambas ecuaciones simultáneamente.

De i, x = 70-y

Sustituir esto en la ecuación ii

0.05 (70 años) + 0.4y = 21

3.5-0.05y + 0.4y = 21

0.35y = 21-3.5

0.35y = 17.5

y = 17.5 / 0.35 = 50 toneladas

Recordar; x = 70-y

x = 70-50 = 20 toneladas.

The coordinate A when the triangle is reflected over the y-axis is (2, 5)

From the triangle, we have

A = (-2, 5)

Reflecting a point over the x-axis is a type of transformation that involves flipping the point across the x-axis.

The reflection involves keeping the y-coordinate of the point the same, but changing the sign of the x-coordinate.

In this case, the original point is (-2, 5). To reflect this point over the y-axis, we keep the y-coordinate (5) the same, but change the sign of the x-coordinate to positive,

Resulting in the reflected point (2, 5).

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Given:

Total number of spots =1327

1) There are 162 on the first level

2)

3)

The expression for g in terms of other variables is g = Fd^2/m1m2

Given the expression below as shown

F=gm1*m2/d2

We are to make g the subject of the formula

F=gm1*m2/d2

Cross multiply

Fd2 = gm1m2

Divide both sides by m1m2

Fd^2/m1m2 = g

g = Fd^2/m1m2

Hence the expression for g in terms of other variables is g = Fd^2/m1m2

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Answer:

x=9

Angles = 50

Step-by-step explanation:

The angles are alternate interior angles and alternate interior angles are equal

4x+14 = 6x-4

Subtract 4x from each side

4x+14-4x = 6x-4-4x

14 = 2x-4

Add 4 to each side

14+4 = 2x-4+4

18 =2x

Divide by 2

18/2 =2x/2

9 =x

The angles are equal

4x+14 = 6x-4 = 4(9)+14 = 36+14 = 50

Answer:

Step-by-step explanation:

From the information given, we need to get the rate of change of distance which is the velocity (slope.)

velocity = Δd/Δt

v = d2-d1/t2-t1

from the table;

when t = 2, d = 700

when t  = 3, d = 1050

v = 1050/750/3-2

v = 350/1

v = 350

Since v = d/t

350 = d/t

cross multiply

350t = d

Rearrange:

d = 350t

Hence the equation that represents the information is d = 350t

Answer:

D

Step-by-step explanation:

Solution

on the second quadrant

Now cos a

The minimum sample size for the given event to have a normal approximation has to be 13 people.

For normal approximation,

np or n(1-p) should be greater than 10

where,

n = the sample size

p = probability for the occurrence of the event

Here, 20% of ohio residents support the legalization of marijuana

p = 20% or, 2/10

Hence,

1 - p = 1 - 2/10

= 8/10

Therefore, for normal approximation to be used

either n X 2/10 > 10    or,      n X 8/10 > 10

Therefore,

n X 2 > 10 X 10            or,      n X 8 > 10 X 10

hence,

n > 100/2                      or,               n > 100/8

n >  50                          or,               n > 12.5

Since we need to find the minimum no. of sample size to be required we will consider

n > 12.5

The sample size has to be a whole number hence,

n = 13

Therefore, the minimum sample size for the given event to have a normal approximation has to be 13 people.

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To find the length of the diagonals of a regular pentagon with side length 2, we can use the Pythagorean theorem and trigonometric functions.

Let's draw a regular pentagon with side length 2 and label its vertices as A, B, C, D, and E.

[asy]

pair A,B,C,D,E;

A = dir(90);

B = dir(162);

C = dir(234);

D = dir(306);

E = dir(18);

draw(A--B--C--D--E--cycle);

label("A",A,N);

label("B",B,W);

label("C",C,SW);

label("D",D,SE);

label("E",E,NE);

[/asy]

We want to find the length of the diagonals AC and AD.

First, let's find the length of the segment AB. We can use the fact that the angles in a regular pentagon are all equal and sum to 540 degrees, so each angle is 108 degrees. The triangle ABE is isosceles, so we can use trigonometry to find the length of AB:

$\cos(54) = \frac{AB}{2}$

$AB = 2\cos(54)$

$AB = 1.309$

Next, let's find the length of the segment AC. We can use the fact that the triangle ABC is isosceles and use the Pythagorean theorem:

$AC^2 = AB^2 + BC^2$

$AC^2 = (1.309)^2 + 2^2$

$AC^2 = 5.452$

$AC = 2.338$

Finally, let's find the length of the segment AD. We can use the fact that the triangle ABD is isosceles and use the Pythagorean theorem:

$AD^2 = AB^2 + BD^2$

$AD^2 = (1.309)^2 + (2\cos(36))^2$

$AD^2 = (1.309)^2 + (2\cos(54))^2$

$AD^2 = (1.309)^2 + 1.896$

$AD = 2.240$

Therefore, the length of the diagonals AC and AD of the regular pentagon with side length 2 are approximately 2.338 and 2.240, respectively.

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Answer:

Step-by-step explanation:

Given tq equation of the height reached by the rocket as y=-16x^2+235x+133

The velocity of the object at its maximum height is zero

v = dy/dx = 0(at max height)

v =-32x +235

0 =-32x+235

x = 235/32

x = 7.34

Hence the rocket will reach its maximum height after 7.34seconds

Exact length of border required by Kristin is calculated to be 9.42 ft.

This question can be solved using the concept of circumference of a circle.

The circumference of a circle or ellipse in geometry is its perimeter. That is, if the circle were expanded out and straightened out to a line segment, the circumference would be the length of the arc. The curve/arc length around any closed figure is more often referred to as the perimeter. The term "circumference" can also refer to the circle's actual location, which corresponds to a disk's edge. A sphere's circumference is equal to the length of any one of its great circles.

Circumference of a circle is given by 2πr.(r is the radius of the circle)

In the given question,

diameter= 3ft

radius= half times of diameter

radius= 1.5 ft.

Circumference= 2πr

= 2×3.14×1.5

=9.42 ft

Kristin will require 9.42 ft of border around the edge of the table.

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