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4 years ago

Solve the exercise : 2x + 5 = 13

Mathematics

2 answers:

nikitadnepr [17]4 years ago

7 0

Answer:

2x+5=13

2x+5-5=13-5

2x=8

Divide by 2

2x/2=8/2

x=4

Check answer:

By using substitution method

2x+5=13

2(4)+5=13

8+5=13

13=13

Answer is x=4

kolbaska11 [484]4 years ago

5 0

Answer: the answer is 4

Step-by-step explanation:

first you have to cancel out the 5 so you subtract 5 and you have to do that on both sides so then you subtract 5 from 13 which is 8 and then your left with 2x=8 and from their you just divide 8 by 2 which is 4 :)

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Step-by-step explanation:

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3 years ago

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Solve for x. Show each step of the solution. Show all work. 4.5(8-x)+36-2.5(3x+24)=102

sergejj [24]

4.5(8 - x) + 36 = 102 - 2.5(3x + 24)

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4 years ago

On one day a pet store sells 2 birds 6 gerbils 3 fish and 3 hamsters whats the data and relative frequency as a percent?

bonufazy [111]

Answer:

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Gerbils $F_g=42.9\%$

Fish $F_f=21.4\%$

Hamsters $F_h=21.4\%$

Step-by-step explanation:

From the question we are told that:

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Number of birds $n_b=2$

Number of gerbils $n_g=6$

Number of fish $n_f=3$

Number of hamsters $n_h=3$

Generally the frequency for birds $F_b$ is mathematically given b

$F_b=\frac{n_b}{n}*100$

$F_b=\frac{2}{14}*100$

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Generally the frequency for Gerbils $F_g$ is mathematically given b

$F_g=\frac{n_g}{n}*100$

$F_g=\frac{6}{14}*100$

$F_g=42.9\%$

Generally the frequency for fish $F_f$ is mathematically given b

$F_f=\frac{n_f}{n}*100$

$F_f=\frac{3}{14}*100$

$F_f=21.4\%$

Generally the frequency for fish $F_h$ is mathematically given b

$F_h=\frac{n_h}{n}*100$

$F_h=\frac{3}{14}*100$

$F_h=21.4\%$

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3 years ago

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Step-by-step explanation:

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3 years ago

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