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3 years ago

Solve the equation no calculator 1/5 (x +2)= 1/4 (x + 6)

Mathematics

1 answer:

NeTakaya3 years ago

8 0

First, you need to get rid of the fraction by multiplying both sides by 20 and you would get:

4(x + 2) = 5(x + 6)

Now, you need to get rid of the parenthesis by distributing:

4x + 8 = 5x + 30

Subtract both sides by 5x:

-x + 8 = 30

Subtract both sides by 8:

-x = 22

Now, divide both sides by -1:

x = -22

P.S.: You don't really need a calculator to solve.

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5=x+8 (Sorry but i've been on this one for hours)

DENIUS [597]

Answer:

x = -3

Step-by-step explanation:

Subtract 8 from both sides to get x alone.

5 - 8 = x + 8 - 8

-3 = x

3 0

3 years ago

Read 2 more answers

The numbers 2/1/3,h,k,7/7/8 firm a geometric progression. find the value of h and of k

taurus [48]

$\text{We have }\ 2\dfrac{1}{3},\ h,\ k,\ 7\dfrac{7}{8}.\\\\\text{Convert the mixed numbers to the improper fractions}\\\\2\dfrac{1}{3}=\dfrac{2\cdot3+1}{3}=\dfrac{7}{3}\\\\7\dfrac{7}{8}=\dfrac{7\cdot8+7}{8}=\dfrac{63}{8}\\\\\text{If}\ a_1,\ a_2,\ a_3,\ a_4\ \text{is a geometric seqence, then:}\\\\\dfrac{a_2}{a_1}=\dfrac{a_3}{a_2}=\dfrac{a_4}{a_3}=r\\\\a_2=a_1r\\\\\text{and}\ \dfrac{a_4}{a_1}=r^3\\\\\text{Substitute:}$

$r^3=\dfrac{\frac{63}{8}}{\frac{7}{3}}\\\\r^3=\dfrac{63}{8}\cdot\dfrac{3}{7}\\\\r^3=\dfrac{9\cdot3}{8\cdot1}\\\\r^3=\dfrac{27}{8}\to r=\sqrt[3]{\dfrac{27}{8}}\\\\r=\dfrac{3}{2}\\\\h=2\dfrac{1}{3}\cdot\dfrac{3}{2}=\dfrac{7}{3}\cdot\dfrac{3}{2}=\dfrac{7}{2}\\\\k=\dfrac{7}{2}\cdot\dfrac{3}{2}=\dfrac{21}{4}\\\\Answer:\ \boxed{h=\dfrac{7}{2}=3\dfrac{1}{2}\ and\ k=\dfrac{21}{4}=5\dfrac{1}{4}}$

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3 years ago

Solve for the following equation 9/4x + 1/3 = 5/2x

marshall27 [118]

Answer:

3/4

Step-by-step explanation:

plug values in for x till you get it right

7 0

2 years ago

4. Entomologists introduce 20 of one

Lina20 [59]

Answer:

This number can be found using the Rule of 70, which describes the formula dt = 70 / r, where dt is the doubling time, and r is the annual rate of growth.

Step-by-step explanation:

24/6 = 4

20 x 2 = 40 x 2 = 80 x 2 = 160 x 2 = 320

20 ---> 320 in the first day.

Keep doing this equation. Multiply each day's end result by 2 four times for 9 more days.

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4 years ago

Each sales associate at an electronics store has a choice of the two salary option shown below: 115 per week plus 9.5% commissio

Annette [7]

$450 per week earns you $450 total per week, for $23,400 total
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5 0

3 years ago