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My name is Ann [436]
3 years ago
9

Simplify the expression. PLEASEE Help me ​

Mathematics
1 answer:
zhuklara [117]3 years ago
3 0

Answer:

First box : 2

Second box : 8

Third box : 4

Fourth box : 80

Fifth box : 240

Step-by-step explanation:

First, 9 - 7 = 2

Second, 2 x 2 x 2 = 8

Third, 8/2 = 4

Fourth, 320/4 = 80

Fifth, 80 x 3 = 240

Hope this helps!

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The cost of admission to the State Fair changed from $8.50 last year to $10.00 this year. Round to the nearest tenth. Show your
seropon [69]

Answer:

Percent increase is 17.6%

We still have to pay 7.50 with the coupon

Step-by-step explanation:

Percent increase = (new- original)/original *100%

                             = (10-8.5)/8.5 * 100%

                             = 1.5/8.5 * 100%

                             = 17.6470588%

Round to the nearest tenth

                                 17.6%

This is an increase since the cost went up.

If we have 25% off, we still have to pay (100%-25%) = 75%

10 *.75 = 7.50

We still have to pay 7.50 with the coupon

6 0
3 years ago
If x is too small that its square and higher powers be neglected then (1+3x)-2=?
Molodets [167]

The answer is 3x - 1.

7 0
3 years ago
Maria has gotten scores of 75, 77, 81 and 84 (out of a possible 100) on the four midterm examinations for a math class. If each
timofeeve [1]

Answer:

93.63

Therefore, she need to get a minimum of 93.63 out of 100 in the final exam

Step-by-step explanation:

Given;

Each midterm exam = 15% of total grade

Final exam = 40% of total grade

Midterm scores = 75, 77, 81 and 84 (out of a possible 100)

Total midterm score = 75+77+81+84 = 317

To determine the grade of the four midterm exams in the total score;

We need to find the 15% of the midterm score;

= 15% of 317

= 0.15×317

= 47.55 %

To get a minimum score of 85 % of the total score, the amount of the total score to be secured in the final exam is;

Final exam = 85% - 47.55% = 37.45%

Since final exam is 40% of the total score;

It means she need to get 37.45% out of 40% of the final exam.

Converting it to a score of 100;

Final exam score = 37.45/40 × 100

Final exam score = 93.63

Therefore, she need to get a minimum of 93.63 out of 100 in the final exam

3 0
2 years ago
The world record for the fastest typing speed is 212 words per minute. How many words per second is this? Round to the nearest t
taurus [48]

Answer:

3.5

Step-by-step explanation:

212 words / 60 seconds in a minute = 3.53 repeating


6 0
3 years ago
Read 2 more answers
9 kg of washing powder cost $10.80. What is the cost of 1 kg of washing powder?
Andrei [34K]

Answer:

cost of 1 kg of washing powder is $1.2

Step-by-step explanation:

9 kg = $10.80

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

cost for 1 kg =

  • 10.80 ÷ 9
  • $1.2

7 0
1 year ago
Read 2 more answers
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