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4 years ago

I need help with this this is timed i give brainest

Mathematics

2 answers:

SCORPION-xisa [38]4 years ago

5 0

Answer:

B. 5 weeks

Step-by-step explanation:

Rearrange equation

6w = 34 - 4

Simplify equation

6w = 30

Divide both sides by 6 to make 'w' on its own

w = 5

adoni [48]4 years ago

4 0

Answer is b // 5 weeks

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The surface area of a sphere is 275.56 1 cm? What is the approximate volume of the sphere?

skad [1K]

Answer:

$V=430.19\ cm^3$ or $V=136.93\pi\ cm^3$

Step-by-step explanation:

The surface area of a sphere is:

$A_s=4\pi r^2$

Where r is the radius of the sphere

In this case we know that $A_s = 275.561\ cm^2$

$4\pi r^2=275.561$

We solve the equation for r

$4\pi r^2=275.561\\r^2 = \frac{275.561}{4\pi}\\\\r=\sqrt{ \frac{275.561}{4\pi}}\\\\r=4.683\ cm$

Now we know the radius of the sphere.

The volume of a sphere is:

$V=\frac{4}{3}\pi r^3$

We substitute the value of the radius in the formula

$V=\frac{4}{3}\pi (4.683)^3$

$V=430.19\ cm^3$

5 0

4 years ago

90 POINTS: What is the slope of the line in the correct graph? What is the slope of the line in the incorrect graph? Are the slo

galben [10]

Answer:

Correct graph

$slope \frac{(175 - 105)}{(9 - 2)} \\ = \frac{70}{7} \\ = 10$

Incorrect graph

$slope = \frac{(175 - 105)}{(8 - 2)} \\ = \frac{70}{6} \\ = 11.7$

Slopes are not the same

5 0

3 years ago

Read 2 more answers

106=3x-54 and -7(4-2)+1=15-7x I don’t understand these 2 need help ASAP

makkiz [27]

-7(4-2)+1=15-7x
-7 x 2 + 1 = 15 - 7x
-14 + 1 = 15 -7x
-13 -15= -7x
-28 = -7x
-28 / -7 = x
x=4

3x - 54 = 160 >I just flipped the equation
3x - 54 (+54) = 160 (+54) added 54 each
3x = 160
3x/3 = 160/3 >divided 3 to each side
x = 160/30
or 53.33333333333333333~

6 0

4 years ago

Look at this number sentence.

oksian1 [2.3K]

Answer:

1/7

Step-by-step explanation:

You have to multiply across the top then the bottom.

8 0

3 years ago

Read 2 more answers

For the polyhedron, use Euler's Formula to find the missing number.

disa [49]

If the number of the edges of the polyhedron is 14 and the vertices are 9. Then the number of the faces of the polyhedron is 7.

<h3>What is a polyhedron?</h3>

A polyhedron is a solid made composed of polygons in three dimensions. It has vertices, flat faces, and straight edges.

We know the Euler's formula

F + V - E = 2,

where, F = number of faces, V = number of vertices, and E = number of edges

Edges: 14

Vertices: 9

F + 9 - 14 = 2

F = 14 + 2 - 9

F = 16 - 9

F = 7

Then the number of the faces of the polyhedron is 7.

More about the polyhedron link is given below.

brainly.com/question/2321456

#SPJ1

3 0

2 years ago