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4 years ago

Please help! Fractions are confusing me!!

Mathematics

1 answer:

Nat2105 [25]4 years ago

5 0

For part 2, there are 24 hours in a day. To solve these questions just multiply the fraction by 24, so for a. 24*(1/4)=(24/4)=6 hours. You can solve the other questions similarly.

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Jenny bought scrapbooking supplies for $156.50. She paid $10.17 in sales tax. What was the sales tax rate on the supplies? If ne

Lapatulllka [165]

Answer:

6.5%

Step-by-step explanation:

sales price x sales tax rate = sales tax

156.50 x sales tax rate = 10.17

sales tax rate = 10.17/156.50

sales tax rate = .065 or 6.5%

7 0

3 years ago

Select all of the pieces of information that would tell you x and y have a proportional relationship. Let y represent the distan

natima [27]

Complete Question:

Select all of the pieces of information that would tell you x and y have a proportional relationship.

Let y represent the distance between a rock and a turtle's current position in meters and x represent the number of minutes the turtle has been moving. y=3x

1. After 4 minutes, the turtle has walked 12 feet away from the rock.

2. The turtle walks for a bit, then stops for a minute before walking again.

3. The turtle walks away from the rock at a constant rate.

Answer:

1. After 4 minutes, the turtle has walked 12 feet away from the rock.

3. The turtle walks away from the rock at a constant rate.

Step-by-step explanation:

Given

$y = 3x$

Required

Determine which of the options answers the question

Recall that:

$y = distance$

$x = time$

Analyzing the options 1 after the other:

Option 1:

In this option, we have that:

$y = 12$

$x = 4$

Substitute these values of x and y in the given equation

$y = 3x$

$12 = 3 * 4$

$12 = 12$

Because both sides of the equation are equal, this option shows a proportional relationship

Option 2:

The given equation cannot be used to ascertain the information given in this option.

Because for a every time (in minutes) traveled by the turtle, there's a corresponding distance moved.

Option 3:

Recall that

$y = 3x$

Assume $x = 5$

y would be

$y = 3 * 5$

$y = 15$

Assume $x = 6$

y would be

$y = 3 * 6$

$y = 18$

For every values of x and corresponding y value, there exist a constant relationship because:

$\frac{y}{x} = 3$

This implies that the rate at which the turtle moved is 3ft/s and this rate is constant.

7 0

3 years ago

My teacher wanted us to try this out, but I don't understand it as much.

statuscvo [17]

solve for the indicated variable means isolate that variable.

Ans(7)

P=IRT (T)

that means solve for T or make T alone on one side of equal.

To do that we just need to move IR on the left side

So we get:

$\frac{P}{IR}=T$

Hence final answer will be $T=\frac{P}{IR}$

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Ans(8)

2x-3y=8 (y)

-3y=8-2x

$y=\frac{8-2x}{-3}$

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Ans(9)

V=LWH (L)

$L=\frac{V}{WH}$

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Ans(10)

A=2(L+W) (w)

A=2L+2W

A-2L=2W

$\frac{A-2L}{2}=W$

$W=\frac{A-2L}{2}$

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Ans(11)

ax+by=c (y)

by=c-ax

$y=\frac{c-ax}{b}$

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Ans(12)

$P=\frac{R-C}{N}$ (R)

PN=R-C

PN+C=R

R=PN+C

4 0

4 years ago

Carlos is going to bake some banana muffins for his friend's birthday, but he wants to make only half of a batch. a full batch c

ehidna [41]

1 3/4 cups of flour ÷ 2 = 7/8 of a cup of flour.

3 0

3 years ago

Write a set of four ordered pairs that represents a linear funtion. then give the function rule

Yuri [45]

The function rule I will be using is this:

$y = 2x + 5$

Four ordered pairs that could represent this linear function are:

(0, 5)
(1, 7)
(2, 9)
(3, 11)

3 0

4 years ago