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ki77a [65]
4 years ago
15

Welp! Tysm!!!!

Mathematics
1 answer:
Hatshy [7]4 years ago
7 0
4:5 = 20:x

Since 20/4 is 5, we know the ratio was multiplied by 5 so the bag contains 25 red marbles.
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Need an answer, please need an answer, please​
inna [77]

Answer:

Step-by-step explanation:

O

3x² - 11x - 4 = 0

a = 3 ; b = -11 , c = -4

Sum \ of \ roots = \dfrac{-b}{a}=\dfrac{-(-11)}{3}=\dfrac{11}{3}\\\\Product \ of \ roots =\dfrac{c}{a}=\dfrac{-4}{3}\\\\

W

8x² + 12x = -1

8x² + 12x + 1 = 0

a = 8 ;  b = 12 ; c = 1

Sum  \ of \ roots =\dfrac{-b}{a}=\dfrac{-12}{8}=\dfrac{-3}{2}\\\\Product \ of \ roots = \dfrac{c}{a}=\dfrac{1}{8}

L

x² + x = 6

x² + x - 6 = 0

a = 1 ; b= 1 ; c = -6

Sum \ of \ roots = \dfrac{-1}{1}=-1\\\\Product \ of \ roots = \dfrac{-6}{1}=-6

G

x²- 2x - 2 =0

a = 1 ; b = -2 ; c = -2

Sum \ of \ roots = \dfrac{-(-2)}{1}=2\\\\Product \ of \ roots = \dfrac{-2}{1}=-2

E

4x - 5 = -4x²

4x² + 4x - 5 = 0

a = 4 ;  b = 4 ; c = -5

Sum \ of \ roots = \dfrac{-4}{4}=-1\\\\Product \ of \  roots=\dfrac{-5}{4}

B

12x² +x -6 = 0

a = 12 ; b = 1 ; c = -6

Sum \ of \ roots =\dfrac{-1}{12}\\\\Product \ of \ roots  =\dfrac{-6}{12}=\dfrac{-1}{2}

R

2x² + 5x - 25 = 0

a = 2 ; b = 5 ; c = -25

Sum \ of \ roots=\dfrac{-5}{2}\\\\Product \ of \ roots =\dfrac{-25}{2}

A

6x² -5x - 4 = 0

a = 6 ; b = -5 ; c = -4

Sum \ of \ roots =\dfrac{-[-5]}{6}=\dfrac{5}{6}\\\\Product \ of \ roots = \dfrac{-4}{6}=\dfrac{-2}{3}

8 0
2 years ago
Read 2 more answers
What is the × variablefrom the equation -3+×=7
Serggg [28]
-3+10=7 because 10-3=7
5 0
3 years ago
I need help i will mark brainiest
o-na [289]

Step-by-step explanation:

option D

16+ 125/ 6= 141/6 = 47 / 2 = 23.5

<em><u>plz </u></em><em><u>mark</u></em><em><u> my</u></em><em><u> answer</u></em><em><u> as</u></em><em><u> brainlist</u></em><em><u> plzzzz</u></em><em><u>.</u></em>

<em><u>hope</u></em><em><u> this</u></em><em><u> will</u></em><em><u> be</u></em><em><u> helpful</u></em><em><u> to</u></em><em><u> you</u></em> .

8 0
3 years ago
Read 2 more answers
Write 6 3% as a decimal.<br> 5
Nutka1998 [239]

Answer: 0.63

Step-by-step explanation:

1. Move the decimal point two places to the right giving you 0.63

3 0
3 years ago
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18+(-12)+5 add integers
blagie [28]

The answer to this question is 11.

5 0
4 years ago
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