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3 years ago

What is -7.9? I really need help ASAP

Mathematics

1 answer:

Lunna [17]3 years ago

3 0

Answer:

Negative 7.9

Step-by-step explanation:

-7.9 is just negative 7.9.

Do you need this as fraction? If you do, I can help ^^

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Translate the sentence into an equation.

liberstina [14]

Answer:

w = 2/3

Step-by-step explanation:

The product of a number and 6 is 6w.

6w = 4

Dividing both sides by 6 results in w = 4/6, or w = 2/3

4 0

3 years ago

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What two nonnegative real numbers with a sum of 64 have the largest possible product?

Otrada [13]

The two non negative real numbers with a sum of 64 that have the largest possible product are; 32 and 32.

<h3>How do we solve the nonnegative real numbers?</h3>

Let the two numbers be x and y.

Thus, if their sum is 64, then we have;

x + y = 64

y = 64 - x

Their product will be;

P = xy

Putting (64 - x) for y in the product equation we have;

P = (64 - x)x

P = 64x - x²

Since the product is maximum, let us find the derivative;

P'(x) = 64 - 2x

At P'(x) = 0, we have;

64 - 2x = 0

2x = 64

x = 64/2

x = 32

Thus; y = 64 - 32

y = 32

Read more about nonnegative real numbers

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6 0

1 year ago

Find the slope between points (4,-5) and (5,-1)

Yuki888 [10]

Answer:

Step-by-step explanation: You have to do y-y over x-x. So -1 minus-5 which equals 4. Then 5 minus 4 which equals 1. So you divide the answers you got 4÷1=4

4 0

3 years ago

A line passes through the points (2,4) and (5,6) .

Alenkinab [10]

Answer:

Option B and D are correct.

Step-by-step explanation:

Given: A line passes through the points (2,4) and (5,6).

* Case 1:

If a line passes through the points (2, 4) and (5, 6)

Point slope intercept form:

for any two points $(x_1,y_1)$ and $(x_2, y_2)$

then the general form $y -y_1=m(x-x_1)$ for linear equations where m is the slope given by:

$m =\frac{y_2-y_1}{x_2-x_1}$

First calculate slope for the points (2, 4) and (5, 6);

$m = \frac{y_2-y_1}{x_2-x_1} =\frac{6-4}{5-2} = \frac{2}{3}$

then, by point slope intercept form;

$y-4=\frac{2}{3}(x-2)$

* Case 2:

If a line passes through the points (5, 6) and (2, 4)

First calculate slope for the points (5, 6) and (2, 4);

$m = \frac{y_2-y_1}{x_2-x_1} =\frac{4-6}{2-5} = \frac{-2}{-3}= \frac{2}{3}$

then, by point slope intercept form;

$y-6=\frac{2}{3}(x-5)$

Yes, the only equation of line from the given options which describes the given line are;

$y-4=\frac{2}{3}(x-2)$ and $y-6=\frac{2}{3}(x-5)$

8 0

4 years ago

John is twice as old as Fred. Four years ago John was 6 times as old. How old is John?

kari74 [83]

I think john is 10 years old hope that helps.

7 0

3 years ago

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