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3 years ago

PLEASE HELP! CORRECT = BRAINLIEST There are 5 problems

Mathematics

2 answers:

Allushta [10]3 years ago

7 0

Answer:

Give the person above me a brainliest!

Step-by-step explanation:

They deserve it.

skad [1K]3 years ago

6 0

Answer:

$2^{16ab}$ for the first one

77 for the second one

the last one is -72x^-5

Step-by-step explanation:

i dont know about the other two, but i hope these answers help

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Enter the unknown value that makes this statement true. 35 is *Box* % of 70

IgorC [24]

Answer:

50%

Step-by-step explanation:

35x2=70

4 0

3 years ago

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In a bag of marbles 12% were red and 14% were blue,and the rst were white.If there were 250 marbles, how many were red and blue?

GenaCL600 [577]

Answer:

Step-by-step explanation:

Hi,

I think you mean red or blue.

Number which are red or blue = 12 + 14

= 26% or 0.26

The number of red and blue = 0.26 * 250

= 65 marbles

4 0

3 years ago

Find a quadratic model for the set of values: (-2, -20), (0, -4), (4,-20) Show your work

Usimov [2.4K]

A quadratic function:
$y=ax^2+bx+c$

First, take the point (0,-4) and plug the values (x,y) into the equation:
$-4=a \times 0^2+b \times 0 +c \\
-4=c$

So the equation is $y=ax^2+bx-4$ .

Now plug the values of the other two points into the equation and set up a system of equation:
$-20=a \times (-2)^2+b \times (-2)-4 \\
-20=a \times 4^2+b \times 4-4 \\ \\
-20+4=4a-2b \\
-20+4=16a+4b \\ \\
-16=4a-2b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \div 2 \\
-16=16a+4b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\ \\
-8=2a-b \\
\underline{-4=4a+b} \\
-12=6a \\
\frac{-12}{6}=a \\
a=-2 \\ \\
-8=2a-b \\
-8=2 \times (-2)-b \\
-8=-4-b \\
-8+4=-b \\
-4=-b \\
b=4$

The function is:
$\boxed{y=-2x^2+4x-4}$

5 0

3 years ago

Read 2 more answers

Is (0,0) a solution to this system y> x2+x-4 y <x2+2x+1

Aliun [14]

Answer:

Yes, the ordered pair (0,0) is a solution of the system

Step-by-step explanation:

we have

$y\geq x^{2}+x-4$ ----> inequality A