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3 years ago

Please help....... what's (4)x5

Mathematics

2 answers:

Lina20 [59]3 years ago

7 0

(4)x5 is the same as (4)5 or 4 x 5

it equals 20

Anna35 [415]3 years ago

6 0

4+4+4+4+4=20
or 5+5+5+5=20

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Which quadrant will (30,-45) fall into?

Varvara68 [4.7K]

Answer:

Quadrant 4

Step-by-step explanation:

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The y value is negative so it is either 3 or 4

To meet both conditions, it must be 4

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2 years ago

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3 years ago

What is the slope of the graph ? Leave your answer as a reduced fraction ?

Juliette [100K]

Answer:

-3/4

Step-by-step explanation:

(-8,4),(0,-2)

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3 years ago

NEED The FULL equation. Will give Brainly. Thank you!

Ghella [55]

Answer:

$\displaystyle \sf h( - 1) = - \frac{ 2}{3}$

Step-by-step explanation:

we are given a function

$\displaystyle \sf h(x) = \frac{2x - 6}{4 {x}^{2} + 8}$

we would like to simplify it for h(-1)

in order to do so

substitute the value of x

$\displaystyle \sf h( - 1) = \frac{2 \cdot - 1- 6}{4 { (- 1)}^{2} + 8}$

by order of PEMDAS

simplify square:

$\displaystyle \sf h( - 1) = \frac{2 \cdot - 1- 6}{4 { ( 1)}^{} + 8}$

simplify multiplication:

$\displaystyle \sf h( - 1) = \frac{ - 2 - 6}{4 { }^{} + 8}$

simplify addition:

$\displaystyle \sf h( - 1) = \frac{ - 2 - 6}{12}$

simplify subtraction:

$\displaystyle \sf h( - 1) = \frac{ - 8}{12}$

reduce fraction:

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5 0

3 years ago

how many ounces of pure water must be added to 50 ounces of a 15% saline solution to make a saline solution that is 10% salt

anygoal [31]

50 ounces of 15% saline solution contains 0.15*50 = 7.5 ounces of salt.

Let x be the amount of pure water you add to this solution. Then you end up with (x + 50) ounces of this new solution. The amount of salt stays the same.

You want the new solution to have a concentration of 10%. This means you need

7.5 / (x + 50) = 0.1

==> 7.5 = 0.1(x + 50)

==> 7.5 = 0.1x + 5

==> 2.5 = 0.1x

==> 2.5/0.1 = 0.1x/0.1

==> x = 25

7 0

3 years ago