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2 years ago

Mrs. Sparks is a 9th-grade Algebra 1 teacher. She teaches three

Mathematics

1 answer:

soldi70 [24.7K]2 years ago

7 0

Answer:

Imagine that scientists have just discovered a non-bird dinosaur skeleton. They want to know whether the dinosaur was closely related to birds. What features in ...

Step-by-step explanation:

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Type the correct answer in the box. Assume that pi=3.14 and round your answer to the nearest integer.

stepan [7]

Answer:

$648\ yd$

Step-by-step explanation:

step 1

Find the circumference of the complete circle

The circumference is equal to

$C=2\pi r$

we have

$r=35\ yd$

substitute

$C=2\pi(35)$

$C=70\pi\ yd$

step 2

Find the measure of the arc length for a central angle of 280 degrees

Remember that the circumference subtends a central angle of 360 degrees

so by proportion

$\frac{70\pi}{360}=\frac{x}{280}\\ \\x=280*(70\pi )/360\\ \\x=54.44\pi\ yd$

step 3

Find the perimeter of the playground

$P=54.44\pi+45=54.44*3.14+45=215.96\ yd$

Multiply by 3

$215.96*(3)=647.87\ yd$

Round to the nearest integer

$647.87=648\ yd$

7 0

3 years ago

Read 2 more answers

Simplify <br> square roots.

DochEvi [55]

Answer:

zy^5

Step-by-step explanation:

7 0

2 years ago

Three evaluating expression Equation

Feliz [49]

Answer:

³y+7-6x=16

Step-by-step explanation:

this is an example of a 3 evaluating expression equation. *I think*

7 0

2 years ago

Help, please. <br> Find the value of the blue dot on the number line

REY [17]

-19
Explanation: they go back in intervals of -3

6 0

3 years ago

find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be

olasank [31]

Hello,

$u_{1} =4\\
 u_{2} =4*q\\
 u_{3} =4*q^2\\
...\\

 u_{9} =4*q^8\\\\
==\textgreater\ 4*q^8=1024\\
==\textgreater\ q^8=256\\
==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\
if\ q=2 \ then\ \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\

if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\



$

Answer B (but see the problem)

7 0

2 years ago

Read 2 more answers