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3 years ago

What are the coefficients in the expression 4x - 7y + 5 ?

Mathematics

2 answers:

3241004551 [841]3 years ago

6 0

Answer:

4 and -7

Step-by-step explanation:

a coefficient is a number that is being multiplied with a variable (ex:5a) in this case the coefficients are 4 and -7

PSYCHO15rus [73]3 years ago

5 0

Answer:

4 and -7

Step-by-step explanation:

the coefficient is the number in front of the letter.

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A fruit company delivers its fruit in two types of boxes: large and small. Delivery of 8 large boxes and 4 small boxes has a tot

erma4kov [3.2K]

Answer:

x = 18.5 (large) , y = 6.25 (small)

Step-by-step explanation:

Let's start by assigning variables to each type of box.

The large box we will call "x"

The small box we will call "y"

We know that 8x + 4y = 173 (kilograms)

And 3x + 2y = 68 (kilograms)

Since we set up a system of equations, we can now use elimination, by multiplying the entire bottom equation by -2, to get rid of the "y" variable.

8x + 4y = 173

3x(-2) + 2y(-2) = 68(-2)

-6x + -4y = -136 (side note: notice how the "y"'s would cancel each other out because -4y + 4y equals 0)

Add equations together:

2x = 37

x= 18.5

Now that we have x, just substitute it into any of the equations to get y.

You will see that y = 6.25

Please mark this brainliest, and I hope this helps!

5 0

2 years ago

(PLEASE ANSWER 50 POINTS)Write an equation of a line slope-intercept form with the given slope and y-intercept. Slope:3, y-inter

Levart [38]

Y=3x+2

the slope (mx) is 3
the y-intercept (b) is 2.

the equation form is y=mx+b

8 0

2 years ago

- The capacity of the aquarium is 9000 mL.<br>What is the height of the aquarium?<br>

KatRina [158]

Volume of Cuboid = l x b x h
9000 mL = 30 x 15 x h
h = 9000/30 x 15
h = 20cm

4 0

3 years ago

What is the average rate of change of the amount of the element over the 10-minute experiment? *

Dima020 [189]

Answer:

$-2.7 g/min$

Step-by-step explanation:

Given: a graph

To find: the average rate of change of the amount of the element over the 10-minute experiment

Solution:

A rate of change of one quantity with respect to another quantity is known as rate of change. If y is the dependent variable and x is the independent variable then average rate of change = change in y /change in x.

From the graph,

change in x (time) = $10-0=10$ minutes

change in y ( amount of the element) = $3.22-30=-26.78$ g

So, average rate of change = $\frac{-26.78}{10} =-2.7 g/min$

7 0

3 years ago

A bag contains 19 white balls and 6 black balls. the balls are drawn with replacement. what is the expected number of white ball

MrRissso [65]

For every four white balls taken out one black ball is taken out so it would be the 52 white ball

3 0

3 years ago