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Firlakuza [10]
3 years ago
10

Evaluate each expression for the given value (please answer all)

Mathematics
1 answer:
Anna [14]3 years ago
8 0

Answer:

-20a - 65 = -104  for  a = 2.7

-6x + 52 = 45  for  x = 1 1/6

Step-by-step explanation:

-20a - 50  for  a = 2.7

Insert 2.7 in for a.

-20(2.7) - 50 = -54 - 50 = -104

-6x + 52  for  x = 1 1/6

Insert 1 1/6 for x.

-6(1 1/6) + 52 = -7 + 52 = 45

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X = 1/2at^2 <br><br> Solve for t. <br><br> 1.<br><br> 2.<br><br> 3.<br><br> 4.
blsea [12.9K]
Lets get started :)

We need to isolate t from x = \frac{1}{2}at²

Take 2 to the left-hand side { Do multiplication since you see division }
2x = at²

Take a to the left-hand side { Do division since you see multiplication }
\frac{2x}{a} = t² 

Take square root since t is to the power of 2
\sqrt{ \frac{2x}{a} } = t 
8 0
3 years ago
Ramon earns $1,835 each month and pays $53.50 on electricity. To the nearest tenth of a percent, what percent of Ramon's earning
irina1246 [14]

2.9 percent of Ramon's earnings are spent on electricity each month.

<u>Step-by-step explanation:</u>

given

Amount that Ramon earns each month=$1835

Amount Ramon pays on electricity=$53.5

we have to calculate what percentage of $1835 is $53.5

1835\times x/100=53.5\\x=53.5\times100/1835\\=2.9

The amount spent on electricity is 2.9% of his earnings

6 0
3 years ago
Need help quickly help me pleas
7nadin3 [17]
The mean is the average of the numbers. You add up all numbers and divide the result for how many numbers there are (14)

6+2+59+12+11+9+9+54+54+46+2+32+43+11 = 350

Mean = 350/14 = 25
6 0
4 years ago
Read 2 more answers
Write the equation of the line passing through (-2,k) (2,0) and has a slope of -1\
Step2247 [10]
The passing line equation is y=mx (_) +B ( ) 
4 0
3 years ago
cameron is 3 years old older than karlee. karlee is two years older than denise. the sum of cameron,karlee,and denise age is 49.
Mrac [35]

Subtract 5 (Cameron) and 2 (Karlee) from 49.

Why: Denise's age is basically the basic number. Karlee would be 2 years older, so subtract 2 from 49. You get 47. Cameron is 5 years older than Denise, so subtract 5. You get 42 and divide that by 3 since there are 3 people.

49 - 7 = 42

42 divide by 3 = 14

Check:

14 + 5 = 19

14 + 2 = 16

14 + 0 = 14

19 + 16 + 14 =  49

19 (Cameron) - 16 (Karlee) = 3 years older

16 (Karlee) - 14 (Denise) = 2 years older

19 (Cameron) - 14 (Denise) = 5 years older

Hopes this helps!

7 0
3 years ago
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