All categories

3 years ago

8 (40+7) = ( 8. ) + (8 7

Mathematics

1 answer:

prohojiy [21]3 years ago

8 0

The first part is 8 x 40=320
8 x 7=56
320+56 and i am not sure what you have going on on the other half

You might be interested in

What is the difference of a number s and 6 an expression

kow [346]

What is the word problem?

8 0

3 years ago

Read 2 more answers

Help Me Please I need Help!

kirill [66]

Answer:

d. Yes, because any repeating decimal is rational.

Step-by-step explanation:

The given decimal fraction can be written as the repeating decimal ...

$0.\overline{02002}=\dfrac{2002}{99999}$

3 0

3 years ago

Camille is trying to find the area of her new bedroom to see if her new carpet will fit. What unit should she use?

brilliants [131]

She should use square feet. always use square feet when calculating area.

5 0

3 years ago

Read 2 more answers

D.sqrt(2+x^/2)<br> Solve this question please

lidiya [134]

Answer:

Option a.

Step-by-step explanation:

By looking at the options, we can assume that the function y(x) is something like:

$y = \sqrt{4 + a*x^2}$

$y' = (1/2)*\frac{1}{\sqrt{4 + a*x^2} }*(2*a*x) = \frac{a*x}{\sqrt{4 + a*x^2} }$

such that, y(0) = √4 = 2, as expected.

Now, we want to have:

$y' = \frac{x*y}{2 + x^2}$

replacing y' and y we get:

$\frac{a*x}{\sqrt{4 + a*x^2} } = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}$

Now we can try to solve this for "a".

$\frac{a*x}{\sqrt{4 + a*x^2} } = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}$

If we multiply both sides by y(x), we get:

$\frac{a*x}{\sqrt{4 + a*x^2} }*\sqrt{4 + a*x^2} = \frac{x*\sqrt{4 + a*x^2} }{2 + x^2}*\sqrt{4 + a*x^2}$

$a*x = \frac{x*(4 + a*x^2)}{2 + x^2}$

We can remove the x factor in both numerators if we divide both sides by x, so we get:

$a = \frac{4 + a*x^2}{2 + x^2}$

Now we just need to isolate "a"

$a*(2 + x^2) = 4 + a*x^2$

$2*a + a*x^2 = 4 + a*x^2$

Now we can subtract a*x^2 in both sides to get:

$2*a = 4\\a = 4/2 = 2$

Then the solution is:

$y = \sqrt{4 + 2*x^2}$

The correct option is option a.

7 0

2 years ago

Aldrine is buying coffee for his coworkers. He orders small and large coffees. Small coffees

kipiarov [429]

Let small cups = S

Large cups = L

They bought a total of 8 cups, so S + L = 8

Rewrite as S = 8-L (1st equation)

Then you also have

$3S + $5L = $30 (2nd equation)

Replace the S in the second equation with the first equation:

$3(8-L) + $5L = $30

Simplify:

24 - 3L + 5L = 30

Combine like terms:

24+2L = 30

Subtract 24 from both sides:

2L = 6

Divide both sides by 2:

L = 3

They bought 3 large cups

Since they bought a total of 8 cups, that means they bought 5 small cups ( 8-3=5)

Large = 3 cups, Small = 5 cups

6 0

2 years ago