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Marrrta [24]
2 years ago
7

How do you estimate21× 78

Mathematics
1 answer:
finlep [7]2 years ago
8 0

21 *78=

20 * 80=

1600 as an estimate


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The distance in inches around a toy flying disc with diameter 10 inches is given by the expression pie times 10. Evaluate this e
boyakko [2]

Answer:

pi*10 = 3.14*10 = 31.4 inches

8 0
3 years ago
Payday loans are very short-term loans that charge very high interest rates. You can borrow $500 today and repay $575 in two wee
Artyom0805 [142]

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3685.7%

Step-by-step explanation:

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2 years ago
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Mrs. Robinson, an insurance agent, earns a salary of $4,800 per year plus a 3% commission on her sales. The average price of a p
kap26 [50]

Answer:

4800+183x\geq 8000

She must sell at least 18 policies to make an annual income of at least $8,000

Step-by-step explanation:

Let x be the number of policies Mrs. Robinson must sell

We know that Mrs. Robins makes 3% on commission for each policy sold. We also know that the average price of a policy is $6,100, so she makes 3% of $6,100 per policy sold. To find the 3% of $6,100 we just need to multiply 3% and $6,100; then dive the result by 100%:

\frac{3*6,100}{100} =183

Now we know that she makes $183 per policy sold. Since x is the number of policies sold, 183x is her total commission for selling x policies.

We also know that She makes $4,800 per year, so her total annual income is her salary plus her commissions, in other words:

4800+183x

Finally, we know that she wants to make at least $8,000, so her salary plus her commissions must be greater or equal than $8,000:

4800+183x\geq 8000

Let's solve the inequality:

1. Subtract 4800 from both sides

4800-4800+183x\geq 8000-4800

183x\geq 3200

2. Divide both sides by 183

\frac{183x}{183} \geq \frac{3200}{183}

x\geq 17.48

Since she can't sell a fraction of a policy, we must round the result to the next integer:

x\geq 18

We can conclude that she must sell 18 policies to make an annual income of at least $8,000.

7 0
3 years ago
Find the unit price of each of the following items. Round your answer to the nearest tenth.
goldenfox [79]

Answer:

$0.0756 for 18 oz

$0.0634 for 32 oz

Step-by-step explanation:

4 0
2 years ago
A random sample of 30 college students is selected. Each student is asked how much time he or she spent on homework during the p
Allushta [10]

Answer:

See Explanation

Step-by-step explanation:

Given the number of hours each student spent doing homework below:

19​, 15​, 17​, 18​, 24​, 22​, 21​, 20​, 18​, 20​, 18​, 21​, 17​, 22​, 16​,

23​, 24​,  15​, 20​, 17​, 19​, 23​, 18​, 17​, 15​, 24​, 20​, 20​, 19​, 16

The table below is a frequency distribution for the data

\left|\begin{array}{c|c}\text{Number of Hours}&\text{Number of Students}\\(Homework)&Frequency\\-----&------\\15&3\\16&2\\17&4\\18&4\\19&3\\20&5\\21&2\\22&2\\23&2\\24&3\\-----&------\\Total&30\end{array}\right|

6 0
3 years ago
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