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3 years ago

Solve the equation. Round the answer to the nearest tenth.

2 answers:

8 0

Hello,

1) Answer B
2.8x=5.1
==>x=51/28
==>x=1.821428...
==>x≈1.8

2) Answer D
1.26x+2.16=7.71
==>x=(7.71-2.16)/1.26
==>x=4.404761904...
==>x≈4.4

3) Answer C
5x+3=10
==>x=7/5
==>>1.4

4) Answer B

4(x-8)=18
==>4x=18+32
==>x=12.5

Gelneren [198K]3 years ago

4 0

1.) 2.8x = 5.1
 x = 5.1 / 2.8
x = 1.82 ----> B

2.) 1.26x + 2.16 = 7.71
1.26x = 7.71 - 2.16
x = 5.55 /1.26
x = 4.40 -----> D

3.) 5.2x + 3.2 = 9.8
5.2x = 9.8 - 3.2
x =6.6/5.2
x=1.27 -----> B

4.) 4.12(x – 7.89) = 18.12
4.12x – 32.51 = 18.12
4.12x = 18.12 + 32.51
x = 12.29 -----> C

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DanielleElmas [232]

Answer:

Step-by-step explanation:

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3 years ago

Juan scored 15 points more on this test than

maw [93]

Juan's least integer scores in both tests will be 85 and 100 respectively.

Test average of his two scores is atleast 92

Let :

Score on test 1 = b
Score on test 2 = b + 15

Average score can be related thus:

(Sum of score ÷ number of test) ≥ 92
(b + b + 15) ÷ 2 ≥ 92
(2b + 15) ÷ 2 = 92
2b + 15 = 184
2b = 184 - 15
2b = 169
b = 169 ÷ 2
b = 84.5

Therefore, since both scores are integers, his least scores on both tests will be ::

85 and (85 + 15) = 100

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3 years ago

What is the slope of the line on the graph?

Elden [556K]

Y=-1x - 2 Is the answer because the y intercept is negative 2 and if you do rise over Run for 2 points it will show you slope.

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4 years ago

Jack can program an app in 9 hours. Chris can program the same app in 8 hours. How long would it take them to program the same a

alekssr [168]

The time it will take Jack and Chris to program the app when they work together is 4.24 hours.

Rate is a ratio that compares two different quantities which have different units.

Jack program an app in 9 hours. Therefore, the rate is as follows;

1 / 9

Chris can program the same app in 8 hours. Therefore, the rate is as follows;

1 / 8

When they do it together.

1 / 9 + 1 / 8 = 8 + 9/ 72 = 17 / 72

1 / t = 17 / 72

cross multiply

72 = 17 t

t = 72 / 17

t = 4.23529411765

t = 4.24

Therefore, the time it takes for both of them is 4.24 hours.

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6 0

2 years ago

Sherri currently has an account balance of $1,050.80. Her initial deposit on the account was $740 and it earned 3.5% simple inte

Yanka [14]

Answer:

Sherri has the account since twelve years ago

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Current balances of Sherri's account = $ 1,050.80

Initial deposit = $ 740

Interest rate = 3.5% simple interest = 0.035

2. How long has Sherri held the account?

Let's recall the formula of the simple interest:

FV = P * (1 + rt), where FV is the future value of the investment or initial deposit, P, the initial deposit, r, the interest rate and t, the number of periods.

Replacing with the values we have:

1.050.80 = 740 * (1 + 0.035t)

1,050.80 = 740 + 25.9t

1,050.80 - 740 = 25.9t

310.80 = 25.9t

t = 310.80/25.9

t = 12

Sherri has the account since twelve years ago

5 0

4 years ago