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3 years ago

-7x - 4y = -4 find the slope and y intercept of the line

Mathematics

1 answer:

ki77a [65]3 years ago

3 0

Answer:

The slope is -7/4 and the y intercept is 1

Step-by-step explanation:

-7x - 4y = -4

Put the equation in slope intercept form and solve for y

y = mx+b where m is the slope and b is the y intercept

Add 7x to each side

-7x - 4y+7x =+7x -4

- 4y =7x -4

Divide by -4

-4y/-4 = 7x/-4 -4/-4

y = -7/4 x +1

The slope is -7/4 and the y intercept is 1

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3 years ago

Lisa is in charge of planning a reception for 3600 people. She is trying to decide which snacks to buy. She has asked a random s

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Answer:

The expected number of the people at the reception whose favorite snack will be chips is 1152

Step-by-step explanation:

Given

The data in the above table and

Reception = 3600

Required

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The first step is to determine the total number of samples;

$Total = Brownies + Cookies + Chips + Other$

$Total = 32 + 22 + 56 + 65$

$Total = 175$

The next step is to determine the fraction of people whose favorite is chips

$Fraction = \frac{Chips}{Total}$

$Fraction = \frac{56}{175}$

The product of the above fraction and the expected number of people in the reception is the solution to this question;

$Expected\ Number = \frac{56}{175} * 3600$

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<em>Hence, the expected number of the people at the reception whose favorite snack will be chips is 1152</em>

5 0

3 years ago

8 limes/$2.00 You have $5. How much change would you receive after purchasing 12 limes?

olga nikolaevna [1]

Answer:

2 dollars

Step-by-step explanation:

if 8 limes costs 2 dollars, then 4 limes cost 1 dollar

you purchased 12 limes so since you already know what 8 limes coms, you could subtract that

12-8=4

now you need to find out how much for 4 limes which would be half the price of 8 limes.. which should be 1 dollar

so $2.00+$1.00= $3.00

finally 5 dollars minus 3 would result in a change of 2 dollars

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3 years ago