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2 years ago

5

Help I have a lot to do

1 answer:

BaLLatris [955]2 years ago

4 0

12)
(intro) Slope is change in y divided by change in x (axes). Here, the y axis is depth and the x axis is hours. So, the slope is change in depth between any two points, divided by the change in hours between the same points. The slope of this line is half a foot depth divided by 2 hours.
a) So, the slope is 0.5 / 2 = 0.25, or 1/4.
b) The graph shows a constant rate of change because the line is straight (it increases at the same speed. If the line was curving, it would not be a constant rate of change).
c) Yes, because the line has a constant rate of change now.

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Use the identity (x+y)(x2−xy+y2)=x3+y3 to find the sum of two numbers if the product of the numbers is 10, the sum of the square

professor190 [17]

Answer:

The sum of two numbers is 7.

Step-by-step explanation:

Given : the product of the numbers is 10, the sum of the squares of the numbers is 29, and the sum of the cubes of the numbers is 133.

Using identity $(x+y)(x^2-xy+y^2)=x^3+y^3$ and given details, we have to find the sum of two numbers.

Since, given that the product of the numbers is 10 that is $xy=10$

Also, given the sum of the squares of the numbers is 29 that is $x^2+y^2=29$

and the sum of the cubes of the numbers is 133 that is $x^3+y^3=133$

Using, the given identity $(x+y)(x^2-xy+y^2)=x^3+y^3$ ,

Substitute, the given values, we have,

$(x+y)(29-10)=133$

Simplify , we get,

$(x+y)(19)=133$

Divide both side by 19, we have,

$(x+y)=7$

Thus, the sum of two numbers is 7.

7 0

3 years ago

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Please help! Whoever gets it gets Brainliest answer Betty picks 4 random marbles from a bowl containing 3 white, 4 yellow and 5

Vikentia [17]

I think Blue is 5/12, white is 3/12

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3 years ago

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I do not get this question could u guys help me thank you

matrenka [14]

Answer:

A - 5 1/2

B - 3 3/4

C - 9 1/4

Step-by-step explanation:

3 1/4 + 2 1/4 = <u>5 2/4 or 5 1/2 </u>

2 1/4 + 1 1/2 =<u> 3 3/4</u>

3 3/4 + 5 1/2 = <u>8 5/4 or 9 1/4</u>

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2 years ago

$350 at 6% for 6 months. What is the interest to the nearest cent?

zalisa [80]

The answer is fifteen................

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3 years ago

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(80pts) The ratio of the number of A's in the class to B's in the class was 2:5. How many people got A's if there were 40 people

allsm [11]

Make a proportion using the ratio (A:B) given and number of As and Bs really gotten in the class ( $\frac{A's}{B's}$ )

$\frac{2}{5} = \frac{A}{40}$

Cross multiply

2 * 40 = 5 * A

80 = 5A

Isolate A by dividing 5 to both sides

80/5 = 5A/5

16 = A

If 40 people in the class got B's then 16 people got A's

Hope this helped!

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3 years ago