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pashok25 [27]
3 years ago
13

An empty swimming pool is being filled at a rate of 10 gallons per minute. Write an equation to represent the situation. Let x=n

umber of minutes and y=number of gallons.
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
7 0
Y•x

Explanation: The amount of gallons (y) multiplied by the amount of time (x) shows the relationship of how many minutes (x) it takes to fill the pool in gallons(y).
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If a student scored 75 points on a test where the mean score was 83.5 and the standard deviation was 6.1. the student's z score
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Answer: ( -1.5)

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Which is not a correct way to rewrite this expression using the distributive
Effectus [21]

Given:

The expression is

(2x^2+4x-7)(x-2)

To find:

The expression which is not a correct way to rewrite the given expression.

Solution:

We have,

(2x^2+4x-7)(x-2)

Using distributive property, we get

=(2x^2)(x-2)+(4x)(x-2)+(-7)(x-2)

=(2x^2)(x)+(2x^2)(-2)+(4x)(x)+(4x)(-2)+(-7)(x)+(-7)(-2)

Using distributive property the given expression can rewritten as:

=(2x^2+4x-7)(x)+(2x^2+4x-7)(-2)

Only the expression in option A is not a correct way to rewrite the given expression because (2x^2+4x-7) is not distributed to (x-2) properly.

Therefore, the correct option is A.

3 0
2 years ago
A,B, and C are polynomials, where a = n, b=2n+6, and c=n^2-1. What id AB - C in simplest form
Marina CMI [18]
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9 0
3 years ago
What is the equation of the line that passes through the point (-6,8) and has a slope of -5/3?
Alexxx [7]

Answer:

y = -5/3 - 8

Step-by-step explanation:

We want to write this in the form y = mx + b.  We need to find the m (slope) and the b (y-intercept) ,  Whew, they already gave us the slope, so we are have way there.  I will plug in the x and y that we are given from the point (-6, 8) to solve for b.

y = mx + b

8 = -5/3(-6) + b  Multiply the fraction by -6

8 = 30/3 + b  I can make 6 a fraction by writing it 6/1 and then just multiply straight across.  A negative times a negative is a positive.

8 = 10 + b   30/3 is equal to 10.  Now subtract 10 from both sides to get b

-8 = b

I can now write the equations since I now know m and b.

y = -5/3 + (-8) which is the same as y = -5/3 - 8.  Adding a negative is the same as subtracting a positive.

7 0
2 years ago
An isosceles triangle has base angles that each measure 42°. Which equation can be used to find z, the measure of the third angl
kicyunya [14]
The angles all add up to 180

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