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Snowcat [4.5K]
3 years ago
12

HeLp What is the value of the expression when a = 4 and b = 3? 4a+b−5 please

Mathematics
1 answer:
Inessa05 [86]3 years ago
5 0

Answer:

12+3-5

Step-by-step explanation:

If a = 4 and b = 3, then you use substitution to replace the variables with their constant values. Hope I helped!

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Use the chart below to answer the following questions...
Scilla [17]

a) Smith family spend  \$11208 per year to raise their child from 5 to 18 years old.

b) If the family decides to send their child to a 4-year public college, they will spend \$7500 per year

c) Valnez family will be pay \$12517 per year to raise the child from birth to 18 years old

d) \$15714 is the cost per year of raising a child from birth to 18 years old, and paying for 4 years of private college

Step-by-step explanation:

Part a) How much will the Smith family spend per year to raise their child from 5 to 18 years old? Round to the nearest dollar.

The cost from 5 to 18 years old is $145,700

Per year cost will be:

Divide the total amount by the number of years from 5 to 18 years. i.e 18-5 = 13 years

Cost per year: \frac{145700}{13}

Cost per year:\$11208

So, Smith family spend  \$11208 per year to raise their child from 5 to 18 years old.

Part b) If the family decides to send their child to a 4-year public college, how much will they spend per year?

The cost of 4 year Public College $30,000

Cost per year: \frac{30000}{4}

Cost per year: \$7500

So, If the family decides to send their child to a 4-year public college, they will spend \$7500 per year

Part c) How much will the Valnez family pay per year to raise the child from birth to 18 years old

Cost from Birth to 5 years old $79,600

Cost from 5 to 18 years old $145,700

Total\,\,cost = \$79,600+\$145,700\\Total\,\,cost =\$225300

Total years: 18

Cost per year: \frac{225300}{18}

Cost per year: \$12517

Valnez family will be pay \$12517 per year to raise the child from birth to 18 years old

Part d) What is the cost per year of raising a child from birth to 18 years old, and paying for 4 years of private college? Round to the nearest dollar.

From birth to 18 years (found in part c)

Cost from birth to 18 years: $225300

Cost of 4-year Private College: $120,400

Total Cost: \$225300+\$120,400

Total Cost: \$345700

Total years: 18+4 = 22

Cost per year: \frac{345700}{22}

Cost per year: \$15714

\$15714 is the cost per year of raising a child from birth to 18 years old, and paying for 4 years of private college

4 0
3 years ago
Every hour, a machine makes the same number of tennis racquets. If on the 3rd hour of running, the machine has made 240 racquets
Vika [28.1K]

Answer:

80 racquets per hour.

Step-by-step explanation:

Divide 240 by 3, and you'll get 80.  To double check, divide 400 by 5 and you'll still get 80.  Hope that helps.

7 0
3 years ago
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Trigonometry question
Zigmanuir [339]

Answer:

Step-by-step explanation:

x = 87.2ft

Hope that helps :)

3 0
3 years ago
What is the perimeter of the track, in meters?
Serjik [45]

Answer:

i think the answer is  (12*3.14 = 37.68cm is the circumference and 6^2*3.14 = 113.04cm2 is the area.)

Step-by-step explanation:

5 0
3 years ago
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13. Determine the sum of the series 3+7+ 11 +15 + ... (4n-1)?
Virty [35]

Answer:

3+7+11+15+(4n-1) = N(2n+1)

Step-by-step explanation:

atleast that's what i got-

8 0
4 years ago
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