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4 years ago

I need help with the questions underlined !! Please help !!! ASAP

Mathematics

1 answer:

dybincka [34]4 years ago

6 0

This is social studies put it i. Math don’t mean to be mean

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Shawn is coasting down a 500 cm long ramp on his inline skates. The wheels on his inline skates are 32 cm in circumference. How

damaskus [11]

Answer:

16 rotations.

Step-by-step explanation:

We have been given that Shawn is coasting down a 500 cm long ramp on his inline skates. The wheels on his inline skates are 32 cm in circumference.

To find the number of rotations we will divide length of ramp by 32 as distance covered by wheels in one rotation will be equal to 32 cm.

$\text{Number of rotations}=\frac{\text{Total distance}}{\text{Circumference of wheel}}$

$\text{Number of rotations}=\frac{500}{32}$

$\text{Number of rotations}=15.625\approx 16$

Therefore, each wheel must make 16 rotations while Shawn is coasting down the ramp.

8 0

3 years ago

I really need help on this. You don’t have to but if you can help it’s greatly appreciated and I will mark you brainliest!!

skelet666 [1.2K]

Answer:

below⬇⬇⬇⬇⬇⬇

Step-by-step explanation:

since the table mostly gives us the answer, i think its:

$\frac{100}{x}$ = $\frac{200}{22.4}$

⬆⬆⬆⬆that's your answer <3333

3 0

3 years ago

Read 2 more answers

The sum of two books and a pencil is $6.00. The difference of cost between 3 books and 2 pencils is $ 2.00. Find the cost of a b

Gala2k [10]

Answer:

The book costs $2 and the pencil also costs $2.

Step-by-step explanation:

It is easy to get the value of the book and the pencil if we use algebraic expressions.

Let x be the cost of the book and let y be the cost of the pencil.

The sum of 2 books and a pencil is $6.00

2x + y = $6.00

The difference of cost between 3 books and 2 pencils is $2.00.

3x - 2y = $2.00

Step 1: Let's get the value of y first.

2x + y = 6

y = 6 - 2x

Step 2: Let's substitute the value of y and look for the value of x.

3x - 2y = $2.00

3x - 2(6-2x) = 2

3x - 12 + 4x = 2

7x = 12 + 2

7x = 14

x = $\frac{14}{7}$

x = $2 (this is the cost of the book)

Step 3: Let's substitute the value of x and look for the value of y.

2x + y = 6

2 (2) + y = 6

4 + y = 6

y = 6 - 4

y = $2 (this is the cost of the pencil)

Let's check:

2x + y = $6

2(2) + 2 = 6

4 + 2 = 6

6 = 6 (CORRECT)

8 0

3 years ago

Last month, Raul bought 6 used books for $7.50. This month he bought 8 used books for $10.00. What is the constant of proportion

posledela

each book cost 1.25

divide

7.50÷6= 1.25

10÷8= 1.25

this is the proportion

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%7B2%7D%5E%7Bm%7D%20%20%3D%20n%20" id="TexFormula1" title=" {2}^{m} = n " alt=" {2}^{m} =

sveta [45]

Answer:

$\displaystyle n^3-\frac{1}{n^{2}}$

Step-by-step explanation:

Exponents Properties

We need to recall the following properties of exponents:

$(a^x)^y=(a^y)^x=a^{xy}$

$\displaystyle a^{-x}=\frac{1}{a^x}$

We are given the expression:

$2^m=n$

We need to express the following expression in terms of n.

$8^m-4^{-m}$

It's necessary to modify the expression to use the given equivalence.

Recall $8=2^3 \text{ and }4 = 2^2$ . Thus:

$(2^3)^m-(2^2)^{-m}$

Applying the property:

$(2^m)^3-(2^m)^{-2}$

Substituting the given expression:

$n^3-n^{-2}$

Or, equivalently:

$\mathbf{\displaystyle 8^m-4^{-m}= n^3-\frac{1}{n^{2}}}$

5 0

3 years ago