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3 years ago

11

Use estimation to check the answer to this story problem.

2 answers:

aniked [119]3 years ago

4 0

C.<span>The answer should be about 8,000 yards. The student's answer is not correct. because 765*11=8415
</span>

Lelechka [254]3 years ago

3 0

Here, the answer would be: 765 * 11 = 8415 [ About 8 thousands ]

In short, Your Answer would be Option C) <span>The answer should be about 8,000 yards. The student's answer is not correct.

Hope this helps!</span>

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Convert 29.5% to a decimal

cricket20 [7]

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Read 2 more answers

Last year, Susan had 10,000 to invest. She invested some of it in an account that paid 6%

katrin2010 [14]

Answer:

In the account that paid 6% Susan invest $\$6,000$

In the account that paid 5% Susan invest $\$4,000$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

Part a) account that paid 6% simple interest per year

in this problem we have

$t=1\ years\\ P=\$x\\r=0.06$

substitute in the formula above

$I1=x(0.06*1)$

$I1=0.06x$

Part b) account that paid 5% simple interest per year

in this problem we have

$t=1\ years\\ P=\$10,000-\$x\\r=0.05$

substitute in the formula above

$I2=(10,000-x)(0.05*1)$

$I2=500-0.05x$

we know that

$I1+I2=\$560$

substitute and solve for x

$0.06x+500-0.05x=560$

$0.01x=560-500$

$0.01x=60$

$x=\$6.000$

therefore

In the account that paid 6% Susan invest $\$6,000$

In the account that paid 5% Susan invest $\$4,000$

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3 years ago

4. Sam's parents are teachers who commute 45 miles roundtrip to work 5 2 days a week. His parents spend $38 on gasoline each wee

Marat540 [252]

<h2>Answer:</h2><h2>The correct option is d. (i) and (ii)</h2>

Step-by-step explanation:

The total miles covered per day = 45

No of commuting days in a week = 5

Total miles in a week = 45 * 5 = 225

The total amount spent on gasoline = $ 38

Cost of gasoline per gallon = $ 2.48

The number of gallons consumed per week = $\frac{38}{2.48}$ = 15.32 gallons of gasoline per week.

This confirms (ii) statement

The amount spend on gasoline per mile = $\frac{38}{225}$ = $0.17

This confirms (i) statement

The number of miles per gallon of gasoline = $\frac{225}{15.32}$ = 14.68 miles

The statement (iii) is false.

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2 years ago