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2 years ago

I need help with the questions circled, please help!1!

Mathematics

1 answer:

erastova [34]2 years ago

6 0

see attached picture for answers

couldn't see the whole equation for 29 though.

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A tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar, and the total value is $90.00. Ho

Anna35 [415]

Answer:

30 one-dollar bills and 12 five-dollar bills.

Step-by-step explanation:

Let x represent number of one-dollar bills and y represent number of five-dollar bills.

We have been given that a tip jar contains x one-dollar bills and y five- dollar bills. There are 42 bills in the jar. We can represent this information in an equation as:

$x+y=42...(1)$

$x=42-y...(1)$

We are also told that the total value of all bills is $90.00. We can represent this information in an equation as:

$1x+5y=90...(2)$

Upon substituting equation (1) in equation (2), we will get:

$42-y+5y=90$

$42+4y=90$

$42-42+4y=90-42$

$4y=48$

$\frac{4y}{4}=\frac{48}{4}$

$y=12$

Therefore, there are 12 five-dollar bills in the tip jar.

Upon substituting $y=12$ in equation (1), we will get:

$x=42-y\\\\x= 42-12\\\\x=30$

Therefore, there are 30 one-dollar bills in the tip jar.

7 0

2 years ago

a bag of flour contains 8 cups of flour a batch of cookies requires 1 2/5 cups of flour how many batches of cookies can you make

Nataliya [291]

Put 8 into fraction form: 8/1

Put 1 2/5 into a mixed number: 1*5+2 as numerator and 5 as denominator (7/5)

Now multiply 8/1 by the reciprocal of 7/5, which is basically just the numerator and denominator flipped, so 5/7. This is like dividing.

8/1*5/7= 40/7

40/7= about 5.7.

So, your answer would be 5.7 batches, or 5 complete batches would be a better answer.

8 0

3 years ago

Sylvia placed 20 marbles in a bag: 10 red, 5 blue, green, 1 white. If

wel

The answer is 25 % hope it helps

6 0

3 years ago

How to find an acute angle between two lines?

Goryan [66]

You use a Protractor and measure it in the centre.

8 0

2 years ago

A tennis ball has a diameter of 2.7 inches. What is the approximate volume of the tennis ball

jonny [76]

Answer:

volume = 10.2 in³

Step-by-step explanation:

r = 2.7/2 = 1.35

volume = 4/3πr³ = 4/3(3.14)(1.35³) = 10.2 in³

4 0

2 years ago