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bekas [8.4K]
2 years ago
14

i When 20 is added to a certain number and the sun is divided by 3, the result is 3 times the number, find the number.​

Mathematics
1 answer:
Bingel [31]2 years ago
3 0

Answer:

let \: the \: number \: be \: x \\  \frac{20 + x}{3}  = 3x \\  \frac{3(20 + x)}{3}  = (3x)3 \\ 20 + x = 9x \\ 20 = 9x - x \\ 20 = 8x \\  \frac{20}{8}  =  \frac{8x}{8}   \\ x = 2.5

Step-by-step explanation:

Hope that this is helpful .

Have a great day.

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I need help with algebra
rosijanka [135]

Answer:

x = -1 and y = 6

Step-by-step explanation:

using x = -b/2a

x = -4 / 2(2)

x = -1

y = 2(-1)² + 4(-1) + 8

y = 2 - 4 + 8

y = 10 - 4

y = 6

4 0
2 years ago
Lourdes plans to jog at least 1.5 miles. Write an inequality and solve an inequality to find x, the number of hours Lourdes will
Paraphin [41]

Answer:

1.5 ≤ 3.75x

Step-by-step explanation:

Given that:

Distance, D to jog is atleast 1.5 miles

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Actual distance covered if jog last for X hours

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Hence,

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4 0
3 years ago
Pat shows that 16 1/2= the square root of 16. What is one possible way pat could have shown this correctly?
kifflom [539]
<h3>Answer: Choice C</h3>

The base 16 is the same as 4*4.

From there, the rule (a*b)^c = a^c*b^c is used to get (4*4)^{1/2} = 4^{1/2}*4^{1/2}

Afterward, the exponents are added getting 1/2+1/2 = 2/2 = 1. The rule is a^b*a^c = a^{b+c} which only works if the bases are both the same.

6 0
3 years ago
Someone help ASAP for 5 points
prisoha [69]

Answer:

it may be 27

Step-by-step explanation:

12^2+16^2=400

square root 400= 20

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6 0
3 years ago
Carlos received 84 votes. That was 3 of every 7 votes cast in the class president election. How many votes were cast?
Step2247 [10]
336 votes total.

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5 0
3 years ago
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