3 years ago

80 is 40% of what number? A) 200 B) 32 C) 20 D) 112

Mathematics

2 answers:

Tresset [83]3 years ago

8 0

Your answer will be B) 32

Alona [7]3 years ago

8 0

The answer is a, .40x200=80

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3 years ago

If 5 times a number plus two is 17 what is the number

sweet [91]

Answer:

Step-by-step explanation:

by question

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3 years ago

Read 2 more answers

Which of the following expressions is a factor of the polynomial x 2 +3/2x-1

Elodia [21]

Answer:

$\large \boxed{\sf \ \ \ (x+2)(x-\dfrac{1}{2}) \ \ \ }$

Step-by-step explanation:

Hello,

let's solve

$x^2+\dfrac{3}{2}x-1=0\\\\ 2x^2+3x-2=0 \ \text{multiply by 2}\\\\\\$

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There are two solutions

$x_1=\dfrac{-3-\sqrt{25}}{4}\\\\x_1=\dfrac{-3-5}{4}\\\\x_1=\dfrac{-8}{4}\\\\\boxed{x_1=-2}$

And

$x_2=\dfrac{-3+\sqrt{25}}{4}\\\\x_2=\dfrac{-3+5}{4}\\\\x_2=\dfrac{2}{4}\\\\\boxed{x_2=\dfrac{1}{2}}$

So we can write

$x^2+\dfrac{3}{2}x-1\\\\=(x-x_1)(x-x_2)\\\\=(x+2)(x-\dfrac{1}{2})$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0

3 years ago

PLZ HELP (will give brainlest) i think thats how u spell it idk

timama [110]

Answer:

Y are you making us do the test question you should have been payin attention in class

Step-by-step explanation:

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3 years ago

Determine whether each sequence is an arithmetic sequence. Write yes or no. Explain. 4, 7, 9, 12, ...

sesenic [268]

Answer:

Step-by-step explanation:

the sum of 4+7+9+12=32

32/4= 8

8 is not part of the sequence. Therefore its not arithmetic.

6 0

2 years ago