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3 years ago

Help please! i don't know what to do

Mathematics

1 answer:

Serhud [2]3 years ago

8 0

I hope this helps you

9/9+18=x/x+10

9/27=x/x+10

1/3=x/x+10

3x=x+10

x=5

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A student claims that the expression “9 times the sum of a number and 13" is translated to the algebraic expression 9n + 13. Is

FrozenT [24]

Answer:

No, the student is not correct. The correct expression is 9(n+13).

Step-by-step explanation:

"9 times the sum of a number and 13" means you must multiply 9 by the sum, not just by the number. 9n + 13 would be "the sum of 9 times a number and 13." Slightly different wording.

4 0

2 years ago

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Find the variance for the given sample data, Round your answer to one more decimal place than the original data 7 725 1 A. 11.8

VladimirAG [237]

Answer:

D. 7.7

Step-by-step explanation:

7.725, 2 does not round up so its left to 7.7

5 0

3 years ago

There are 6 rotten mangoes and 24 good mangoes in a bag. What fraction of the mangoes is rotten?

dem82 [27]

$\sf \bf {\boxed {\mathbb {Given:}}}$

Total number of rotten mangoes in the bag = 6

Total number of good mangoes in the bag = 24

$\sf \bf {\boxed {\mathbb {To\:find:}}}$

Fraction of the rotten mangoes to the total mangoes.

$\sf \bf {\boxed {\mathbb {Solution:}}}$

$\implies {\blue {\boxed {\boxed {\purple {\sf { \frac{1}{5} }}}}}}$

$\sf \bf {\boxed {\mathbb {Step-by-step\:explanation :}}}$

Total number of mangoes in the bag = Total number of rotten mangoes + Total number of good mangoes

➺ $\:6 + 24$

➺ $\:30$

Now,

Fraction = $\frac{Total \: \: number \: \: of \: \: rotten \: \: mangoes}{Total \: \: number \: \: of \: \: mangoes}$

➺ $\: \frac{6}{30}$

➺ $\: \frac{1}{5}$

Therefore, the fraction of the rotten mangoes to the total mangoes is $\sf\pink{\frac{1}{5}}$ .

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}$

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2 years ago

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Can somebody help me with this please

wolverine [178]

It rotates 180 degrees

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2 years ago

Solve the equation for the given variable. justify each step.

s344n2d4d5 [400]

Answer: y= $\frac{5-9x}{2}$

s=-30+10t

Step-by-step explanation:

9x + 2y = 5; y

9x-9x+2y = 5-9x

2y=5-9x

y= $\frac{5-9x}{2}$

1/15s - 2/3t = -2; s

(1/15s - 2/3t = -2)*15 ==> Get rid of fraction by multiplying both sides by 15

s - 30/3 t=-30

s-10t=-30

s=-30+10t

5 0

1 year ago