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3 years ago

3(2 +8) need helppppppp

Mathematics

2 answers:

laiz [17]3 years ago

7 0

3 (2+8)
Start with parenthesis
So, 2+8= 10
Then multiply it by 3
3*10=30
Hope this helps! :)

aleksley [76]3 years ago

4 0

30
8+2 first the that answer time 3 so the answer is
30
hope this helps you a bit

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3 years ago

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2 years ago

The average test scores for a particular test in algebra was 84 with a standard deviation of 5. What percentage of the students

Delicious77 [7]

Answer:

The percentage of the students scored higher than 89% is 15.87%

Step-by-step explanation:

we are given

The average test scores for a particular test in algebra was 84

so, mean is 84

$\mu=84$

a standard deviation of 5

so,

$\sigma=5$

we have

x=89

now, we can use z-score formula

$z=\frac{x-\mu}{\sigma}$

now, we can plug values

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now, we can use calculator

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3 years ago

Determine the solution type for each equation if one solution determine the value for x

sdas [7]

Step-by-step explanation:

Vamos resolver sua equação passo a passo.

10-7c=10+2(3-5c)

Etapa 1: simplifique os dois lados da equação.

10-7c=10+2(3-5c)

10+-7c=10+(2)(3)+(2)(-5c)(Distribuir)

10+-7c=10+6+-10c

-7c+10=(-10c)+(10+6)(Combine os termos semelhantes)

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Etapa 2: adicione 10c a ambos os lados.

-7c+10+10c=-10c+16+10c

3c+10=16

Etapa 3: subtraia 10 de ambos os lados.

3c+10-10=16-10

3c=6

Etapa 4: divida os dois lados por três.

c=2

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3 years ago