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3 years ago

What is the radius of a circle with an area of 9671.99 cm²? Use 3.14 for pi.

Mathematics

1 answer:

Tcecarenko [31]3 years ago

6 0

Answer:

55.5000143456...

Step-by-step explanation:

Use the formula for the area of a circle and solve for r:

$A=\pi r^2\\9671.99=3.14r^2\\3080.25159236...=r^2\\55.5000143456...=r$

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jekas [21]

Answer:

y=2/3x+5

Step-by-step explanation:

5 0

3 years ago

QUADRILATERAL QUAD IS A RECTANGLE FIND THE VALUE OF X AND Y <br><br> DU= 26, QP= 2X +7

grandymaker [24]

Answer:

The value of x is 3.

Step-by-step explanation:

Consider the below figure attached with this question.

Given: Quadrilateral QUAD is a rectangle, DU=26 and QP=2x+7.

We need to find the value of x.

Diagonals of a rectangle are equal.

$QA=DU=26$ .... (1)

Diagonals bisect each other.

$QP=UP=AP=DP=2x+7$ .... (2)

Using (1) and (2) we get

$DU=QP+AP$

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$DU=2QP$

Substitute given values.

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Divide both sides by 3.

$3=x$

Hence, the value of x is 3.

3 0

3 years ago

A solid has faces that consist of 5 congruent squares and 4 congruent equilateral triangles. The solid has 9 vertices. How many

zimovet [89]

The answer is <span>A. 16 edges

For most of the solid shapes, we can use Euler's polyhedron formula:
f + v - e = 2
f - the number of faces
v - the number of vertices
e - the number of edges

We know:
f = 5 + 4 = 9
v = 9
e = ?

So:
</span>f + v - e = 2
9 + 9 - e = 2
18 - e = 2
18 = e + 2
e = 18 - 2
e = 16

8 0

3 years ago

Solve for x, if. 3(x-8)-5=9(x+2)+1 the answer is 7.166 but i don't know how they got it

djverab [1.8K]

The answer and workings are in the document below. Please open it up in a new window to see it in full.