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3 years ago

SOLVE FOR X, EXPLAIN PLEASE URGENT.

Mathematics

1 answer:

devlian [24]3 years ago

3 0

3x-3=27
-3=-3
3x=24
3x/3=24/3
X=8

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A=3 b=2 c=7 a+b+c=?? Help me please thank you

tester [92]

Answer: 13

Step-by-step explanation:

Given:

a+b+c, where a=3, b=2, c=7

Solve:

Given

a+b+c

Substitute values into the expression

=(3)+(2)+(7)

Combine like terms

=6+7

=13

3 0

2 years ago

Read 2 more answers

for a class of 24,78% of students got a B or better on the tex How many students is this? Round to a wholenumber

natita [175]

Step 1

Use the ratio of the number to the percentage to get the required answer.

$\frac{Total\text{ number of students}}{\text{The required number of students}}=\frac{Total\text{ percentage of the class}}{\text{Given percentage}}$

Where,

$\begin{gathered} \text{The total number of students = 24} \\ \text{The required number }of\text{ students= x} \\ \text{The total percentage of the class = 100} \\ \text{Given percentage = 78} \end{gathered}$

Step 2

Get the required answer

$\begin{gathered} \frac{24}{x}=\frac{100}{78} \\ 100x=24\times78 \\ 100x=1872 \\ \frac{100x}{100}=\frac{1872}{100} \\ x=\text{ 18.72} \\ \text{Hence} \\ x\approx19students\text{ rounded to a whole number } \end{gathered}$

The number of students that got B or a better grade on the test = 19 students rounded to a whole number.

4 0

10 months ago

There 77 students 7:4

melisa1 [442]

Answer:

49:28

Step-by-step explanation:

7+4=11

77/11=7

7*7=49

4*7=28

6 0

3 years ago

In a class, 45 students take the SAT exam. The number of boys is 7 more than the number of girls

velikii [3]

There are 26 boys and 19 girls,
Take away 7 from 45 to get 2g(# of girls)
45-7=38 38=2g To get to # of girls,find just one g
38/2=19 so 19 girls
45-19=boys 45-19=26 boys

6 0

2 years ago

Read 2 more answers

3m+8=15 <img src="https://tex.z-dn.net/?f=3m%20%2B%208%20%3D%2015" id="TexFormula1" title="3m + 8 = 15" alt="3m + 8 = 15" ali

Umnica [9.8K]

Answer:

m = $\frac{7}{3}$