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3 years ago

Help help I will make you brain list!!

Mathematics

1 answer:

nataly862011 [7]3 years ago

8 0

Answer:

No, (8,5) is not a solution of y > x + 7

Step-by-step explanation:

Hope you got it.

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I am dumb ..... so what is the formula of a triangle for perimeter... yeah i know

Sav [38]

Answer:

The formula for the perimeter of a triangle is Side A + Side B + Side C.

The formula for the area of a triangle is Base x Height = total divided by 2.

5 0

3 years ago

What is the positive square root of 16?

vekshin1

Answer:

Step-by-step explanation:

because The square root of 16 is 4, which is a rational number.

5 0

3 years ago

Read 2 more answers

PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198

Elena-2011 [213]

The weight in 1980 is $\frac{4k}{5}$ kilograms

Solution:

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

To find: weight in 1980

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

The percentage increase is given by formula:

$\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100$

Here,

Initial value in 1980 = x

Final value in 1990 = k

Percentage increase = 25 %

Substituting the values in formula,

$25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}$

Thus the weight in kilograms in 1980 is $\frac{4k}{5}$

7 0

4 years ago

Simplify 8(a+2)+2(2+3a)

Alexxx [7]

Expand

8a + 16 + 4 + 6a

Collect like terms

(8a + 6a) + (16 + 4)

Simplify

14a + 20

7 0

3 years ago

Can somebody please help me with these?

alexdok [17]

Answer:

r=52, v=9.96, a=-8.5 all calculated

6 0

3 years ago