Mathematics High School

help 7th grade math need fast please

Answers

Answer 1

Answer:

It's 4800, just multiply 60x80 bc the population is 80x larger than the sample of 100

Related Questions

will give brainliest to the correct answer (nor links or account will be reported) :)

Answers

Answer:

Step-by-step explanation:

68+62=130 then subract 180-130 and have 50 so x=50

Answer:

x°=50°

Step-by-step explanation:

Because of the Vertical Angle Theorem, the blank angle across from 68° is the same measure. Therefore, since the blank angle is 68°, then x° would be 50° because 180-62-68=50 due to the Triangle Angle Sum Theorem.

what is the value of sin E? write your answer as a simplified fraction

Answers

Answer:

[tex] \frac{20}{101} [/tex]

Step-by-step explanation:

I hope this helps

2.
When dropped, a golf ball bounces to
75% of its previous height on each
successive bounce. Someone drops a golf
ball from the top of Burj Khalifa in
Dubai, and its first bounce reaches 2041.5
feet. What is the peak height of the ball
after the tenth bounce?
A) 273 ft.
B) 204 ft.

153 ft.
D) 114 ft.

E) 340 ft

Answers

is E....................

Is the function f(x) = 9x2 + 4x – 2 linear, quadratic, or exponential?

Answers

Answer:

According to me it is quadratic function.

Answer

The function [tex]f(x)=9x^2+4x-2[/tex] is a quadratic function.

Linear functions

Linear functions are the functions having the highest power as one, whereas the quadratic functions have two as the highest power. On the other hand, the function which has the form of [tex]f(x)=\text{e}^x[/tex] is known as an exponential function.

How to determine whether the function is quadratic or not?

The function [tex]f(x)=9x^2+4x-2[/tex] has the highest power of [tex]2[/tex].

Thus, the function [tex]f(x)=9x^2+4x-2[/tex] is a quadratic function.

Learn more about quadratic functions here- https://brainly.com/question/5975436

#SPJ2

A certain television is advertised as a 85 inch TV if the width of the TV is 67 how tall is the TV

Answers

Answer:

Step-by-step explanation:

Apply the Pythagorean Theorem:

85^2 = 67^2 + h^2, where h is the height of the TV

Then 7225 = 4489 + h^2, or

h^2 = 2736, or h = +√2736 = 52.3 inches

The TV is 52.30 inches tall if the television is advertised as an 85-inch TV if the width of the TV is 67.

What is a right-angle triangle?

It is defined as a triangle in which one angle is 90 degrees and the other two angles are acute angles. In a right-angled triangle, the name of the sides are hypotenuse, perpendicular, and base.

We have:

A certain television is advertised as a 85 inch TV

It means the diagonal length is 85 inches.

Width of the TV = 67 inches

Let's suppose the TV is x inches Tall

So from the Pythagoras theorem:

[tex]\rm 85^2 = x^2+67^2[/tex]

7225 = x² + 4489

x = 52.30 inches

Thus, the TV is 52.30 inches tall if the television is advertised as an 85-inch TV if the width of the TV is 67.

Learn more about the right angle triangle here:

brainly.com/question/3770177

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Which words name the shape?

Answers

Answer: B, Parallelogram, and rectangle

Step-by-step explanation:

A parallelogram requires two parallel sides which that shape has.

A rectangle requires all angles to be right angles and that shape has all angles being right angles.

The shape is not a rhombus since all sides are not the same and it's not a square for the same reason.

Find the slope of the line that passes through each pair of points.

Answers

Answer:

0.5

Step-by-step explanation:

Slope (m) =

ΔY

ΔX

= 0.5

θ =

arctan( ΔY ) + 180°

ΔX

= 206.56505117708°

ΔX = 0 – 2 = -2

ΔY = 0 – 1 = -1

Distance (d) = √ΔX2 + ΔY2 = √5 = 2.2360679774998

Equation of the line:

y = 0.5x

When x=0, y = 0

When y=0, x = -0

BRAINIEST PLEASE??

The slope of line:
-6x-3y = 12

Answers

I would be -2/1

Steps:
-6x-3y=12
-3y=6x+12
y=-2x-4
-2x=slope

PLEASE ANSWER ASAP NO LINKS!!!!

Answers

Answer:

Step-by-step explanation:

same slope

Answer:

Step-by-step explanation:

i say this because of the reason of how the line goes along the y and x

Jaden construction scale model of a building with a rectangle or a base model is 2 inches in length and 1 inch in with the scale of the model of 1 inch equals 47 feet what is the actual area in square feet of the base of the building

Answers

Answer:

4418

Step-by-step explanation:

2 inches=94ft

1 inch=47ft

94*47= 4418 ft

hello please help i’ll give brainliest

Answers

Atmosphere is the correct answer!

Solve for x.
40 = 8(x - 10)

Answers

Answer:

x = 15

Step-by-step explanation:

hope this helps, have a great day/night!!

Answer:

Step-by-step explanation:

40=8(x - 10)

Distributive property

40 = 8x - 80

Add 80 on both side

120 = 8x

Divide both sides by 8

120/8 = 15

x = 15

Given that
R
=
4
x
+
4
y

Find
x
when
y
=
9
and
R
=
6

Give your answer as an improper fraction in its simplest form.

Answers

Answer:

x = -15/2

6 = 4x + 4(9)

4x = -30

x = -30/4 = -15/2

2 3/4 - 1 1/6 what is it

Answers

Answer:

1 7/12

Step-by-step explanation:

11/4 -7/6

33/12 - 14/12

19/12

1 7/12

Answer:

1 3/4 - 1 1/6

= 10/4 - 7/6

Lcm of 4 and 6 = 2 ×2 × 3 = 12

= (10/4) × 3 = 30/12

(7/6) × 2 = 14/12

30/12 - 14/12 = 30-13/12 = 17/12

In circle B with m \angle ABC= 30m∠ABC=30 and AB=14AB=14 units, find the length of arc AC. Round to the nearest hundredth.

Answers

Answer:

the answer is 130 because why not

Answer:

The answer is 7.33 m

Step-by-step explanation:

I looked it up lol

If 2x > 8, find the first integer solution.

A. 3

B. 4

C. 5

D. 6

Answers

Answer:

B because 2x > 8 is 8 ÷ 2

Step-by-step explanation:

look at the photo

Which expression is represented by the model

Answers

Answer:

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

Step-by-step explanation:

There are 3 out of 8 shaded in the box, and there are two whole ones, making it:

2 × 3/8

----------------------------------------------------------------------------------------------------------------

Have a good day :)

Which ones the right answer?

Answers

The answer is D. (7,8)

You are able to count from 0 to ten, and you always put the x number first!

Hope this helps :)

Is this proportional or non proportional and why

Answers

Given:

The table of values.

To find:

Whether the given relation in the table is proportional or non proportional.

Solution:

If y is directly proportional to x, then

[tex]y\propto x[/tex]

[tex]y=kx[/tex]

[tex]\dfrac{y}{x}=k[/tex]

Where, k is the constant of proportionality.

It means the ratio of y and x remains same for proportional relation.

From the given table, the points are (10,18), (11,18.6) and (12,19.2). The ratio of y to x for these points are:

[tex]\dfrac{18}{10}=1.8[/tex]

[tex]\dfrac{18.6}{11}\approx 1.69[/tex]

[tex]\dfrac{19.2}{12}=1.6[/tex]

Since the ratio of y to x for the given points are not equal, therefore the given relation is a non proportional relation.

Teachers were told that next year they would receive a percent increase in their salary. Mrs. Bennett is making $32,000 a year and will receive $2,550.00 more next year. What is the percent increase? Round to the nearest percent. I need this answer ASAP please and thank you!

Answers

Answer:

7.97%

Step-by-step explanation:

Given data

Original Salary= $32,000

Increase= $2,550.00

percent increase= increase/original *100

Percent increase= 2,550.00/32000*100

Percent increase= 0.0796875*100

Percent increase= 7.97%

Hence the increase is 7.97%

Write the polynomial in standard form:

3x-4-6x^2+5x^3

Answers

Answer:

see explanation

Step-by-step explanation:

we are gonna write it in terms of descending or ascending order

but I'm gonna do mine in ascending order

it gonna be:

5x³-6x²+3x-4

please help me :))) i really need help

Answers

It should be 14.6 square feet

Factorise x2+3x-4. please

Answers

Answer:

(−1) (+4)

Step-by-step explanation:

Can someone please show me the steps to this problem. I know the answer is 64x but I need to learn the steps. There is a picture with the question.

Evaluate and find the answer.

X*4^8

———-

4^5

Answers

Answer:

Here is the steps: (No link needed)

Step-by-step explanation:

First, cancel out 4^5 in both numerator and denominator. (Basically subtract 8-5 to get 3. The 3 is the third power below.)

So it looks like this:

4^3x

Calculate 4 to the power of 3 and get 64, then just add the x at the end.

Hope this helped, sorry if it's wrong

find the length of the whole segment in terms of x

Answers

Answer:

the length of the whole segment is D. 3x + 7

The answer is D. 3x+7

Someone please help me I’ll give out brainliest please dont answer if you don’t know

Answers

Therefore, x = 8

The image above will help you better understand why.

Answer:

x=8

Step-by-step explanation:

It is really easy just try to multiply

please help me with retake questions? im really confused

Answers

Answer:

20°

Step-by-step explanation:

It's a catch. Draw a stronger line (along the circle) from V, going through Z, W, X, and getting to Y. That measures 320°.

Since the whole circle is 360° the segment YV measures 40°. Therefore, angle VXY = 20°.

Which equation is not a linear function?
y=2+3
y=-3
y = 3.2

Answers

Answer:

the first one y=x with the 3 on top as an exponent

what would be the area of a square if it had the side length of 6 cm

Answers

Answer:

Step-by-step explanation:

since all sides are same, youd multiply 6x6 and that gets ya 36.

The area of the square is 36

Find the intersection points of the linear and quadratic functions shown below f(x)=2x-5 g(x)= x2+2x-21

Answers

Answer:

[tex](-4,-13)[/tex] and [tex](4,3)[/tex] the intersection points.

Step-by-step explanation:

Intersection point of two functions is a common point which satisfies both the functions.

Given functions are,

[tex]f(x)=2x-5[/tex]

[tex]g(x)=x^2+2x-21[/tex]

For a common point of these functions,

[tex]f(x)=g(x)[/tex]

[tex]2x-5=x^2+2x-21[/tex]

[tex]-5=x^2-21[/tex]

[tex]0=x^2-16[/tex]

[tex]x^2=16[/tex]

[tex]x=-4,4[/tex]

For [tex]x=-4[/tex],

[tex]f(-4)=g(-4)=2(-4)-5[/tex]

[tex]=-13[/tex]

For [tex]x=4[/tex],

[tex]f(4)=g(4)=2(4)-5[/tex]

[tex]=3[/tex]

Therefore, [tex](-4,-13)[/tex] and [tex](4,3)[/tex] the intersection points.

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