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3 years ago

What is 42% of 75? A. 315 B. 105 C. 31.5 D. 10.5

Mathematics

2 answers:

iragen [17]3 years ago

7 0

Answer:

31.5

Step-by-step explanation:

42% of 75 is 31.5. The working is as follows :

42 ÷ 100 × 75 = 31.5

You can also use the picture ^^

lubasha [3.4K]3 years ago

6 0

Answer:

$C.$ $31.5$

Step-by-step explanation:

When trying to find a percent of a number, you must always do the following steps:

Multiply the number by the percent number.

$42 * 75 = 3150$

Dividing you answer by 100.

$3150 / 100 = 31.5$

Add percent sign.

31.5%

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Solve the compound inequality 6b < 36 or 2b + 12 > 6.

ss7ja [257]

Answer:

all values of b

Step-by-step explanation:

6b < 36 or 2b + 12 > 6.

First solve the one on the left

6b < 36

Divide by 6

6b/6 < 36/6

b <6

Then solve the one on the right

2b + 12 > 6

Subtract 12 from each side

2b+12-12 >6-12

2b >-6

Divide by 2

2b/2 >-6/2

b >-3

b<6 or b >-3

Rewriting

b>-3 or b<6

b > -3 is an open circle at -3 with a line going to the right

b < 6 is an open circle at 6 with a line going to the left

The or means we add the lines together

We have a line going from negative infinity to infinity

all values of b

5 0

3 years ago

Read 2 more answers

An individual’s investment philosophy changes throughout their lifetime. True or False

ExtremeBDS [4]

Answer:

True

Step-by-step explanation:

You can learn and change your ways on the road of investments

6 0

3 years ago

Gavin took a taxi home from the airport. The taxi fare was $7 plus an additional $0.65 per mile.

Alexeev081 [22]

Answer:

We know that:

There is a fixed cost of $7

for each mile, you need to pay $0.65

Then if you take the taxi for "m" miles, the total cost is:

c(m) = $0.65*m + $7

Now we know that Gavin also gives a $3 tip, so we need to add this to the cost:

c(m) = ($0.65*m + $7) + $3 = $0.65*m + $10

c(m) = $0.65*m + $10

Now we know that he paid a total of $62.65

Then:

c(m) = $62.65 = $0.65*m + $10

This is the equation we need to solve in order to find m, the number of miles between Gavin's house and the airport.

$62.65 = $0.65*m + $10

We only need to isolate m, we will get:

$62.65 - $10 = $0.65*m

$52.65/$0.65 = m = 81

This means that there are 81 miles between the airport and Gavin's house.

6 0

2 years ago

What is the fraction equivalent of -3.4?

Ierofanga [76]

Answer:

-17/5 as an IMPROPER FRACTION

$-3\frac{2}{5}$ as a MIXED FRACTION

6 0

2 years ago

Can someone show me how to do Mean absolute deviation

morpeh [17]

To find the mean of a set, add up all of the numbers and divide by how many numbers you have. For the first set:
$\mu=\frac{10.7+2.4}2=\frac{13.1}2=6.55$
For the second set:
$\mu=\frac{13.7+2.5}2=\frac{16.2}2=8.1$

To find the mean absolute deviation, (MAD) find the mean of the distances of each number from the mean.
For the first set:
$MAD=\frac{|10.7-6.55|+|2.4-6.55|}2=\frac{4.15+4.15}2=\frac{8.3}2=4.15$
For the second set:
$MAD=\frac{|13.7-8.1|+|2.5-8.1|}2=\frac{5.6+5.6}2=\frac{11.2}2=5.6$
Note that when you only have two data points the mean is directly between them, which is why the distances are the same.

The means-to-MAD ratio is simply that, divide one by the other and that's it.
For the first set:
$6.55\div4.15=1.57831325$
For the second set:
$8.1\div5.6=1.44642857$

5 0

2 years ago