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xz_007 [3.2K]
3 years ago
10

WILL MARK BRAINLIEST!! 5 POINTS!!

Mathematics
2 answers:
xenn [34]3 years ago
8 0

Answer:

C)3520 ft/min

Step-by-step explanation:

Hello, I think I can help you with this.

to solve this, you must know the equivalences

1 mile = 5280 feet

1 hour = 60 min

Hence

\frac{1\ mile}{5280\ ft}=\frac{5280\ ft}{1\ mile}=1\\ \frac{1\ hour}{60\ min}=\frac{60\ min}{1\ hour}=1\\

Step 1

convert mph into fpm

The simplest way to converts units is to multiply by an equivalent fraction in such a way that the old unit is eliminated and is in terms of the new one, the quantity is not altered because it is being multiplied by 1, only the unit is changed.

Let

v=40\frac{miles}{hour}*\frac{5280\ ft}{1\ miles}*\frac{1\ hour}{60\ minutes} \\v=\frac{40*5280}{60} \frac{ft}{minutes} \\v=3520\ \frac{ft}{min}\\

C)3520 ft/min

I hope it helps, have a great day.

Anton [14]3 years ago
5 0
The speed of the car per minute is 3,520 feet (choice c). This is because in order to solve the problem, you have to convert 40 mi/h into feet. Since there are 5,280 feet per mile, you have to do 5,280 x 40, which is 211,200, which is the number of feet per hour. But, the question is asking for ft/min. There are 60 minutes in an hour, so you divide 211,200 by 60, which is 3,520. So, the speed of the car per minute is 3,520 feet.
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What is 27% as a fraction in the simplest
Norma-Jean [14]

Answer:

0.27

explanation

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8 0
3 years ago
An equation parallel and perpendicular to 4x+5y=19
UNO [17]

Answer:

Parallel line:

y=-\frac{4}{5}x+\frac{9}{5}

Perpendicular line:

y=\frac{5}{4}x-\frac{1}{2}

Step-by-step explanation:

we are given equation 4x+5y=19

Firstly, we will solve for y

4x+5y=19

we can change it into y=mx+b form

5y=-4x+19

y=-\frac{4}{5}x+\frac{19}{5}

so,

m=-\frac{4}{5}

Parallel line:

we know that slope of two parallel lines are always same

so,

m'=-\frac{4}{5}

Let's assume parallel line passes through (1,1)

now, we can find equation of line

y-y_1=m'(x-x_1)

we can plug values

y-1=-\frac{4}{5}(x-1)

now, we can solve for y

y=-\frac{4}{5}x+\frac{9}{5}

Perpendicular line:

we know that slope of perpendicular line is -1/m

so, we get slope as

m'=\frac{5}{4}

Let's assume perpendicular line passes through (2,2)

now, we can find equation of line

y-y_1=m'(x-x_1)

we can plug values

y-2=\frac{5}{4}(x-2)

now, we can solve for y

y=\frac{5}{4}x-\frac{1}{2}


4 0
3 years ago
Robert is building a deck in his backyard. Each piece of wood measures 42.5 inches. If he has 86 boards,how long are they altoge
BlackZzzverrR [31]
You multiply 86 by 42.5 because each board is 42.5 and there are 86 boards.
4 0
3 years ago
Percentage of number: <br> 70% of 44
Elena L [17]
0.7 * 44 = 30
30 is seventy percent of forty four
4 0
3 years ago
Read 2 more answers
5.5 = -2 + d
TEA [102]
The value of <em>d</em> is 7.5.

The key to solving equations is doing the inverse, or opposite, function/process.
For example, you subtract when d + 1 = 2:
d + 1 = 2
(d + 1) -1 = (2) - 1
d = 1

In the same way, you add values when you have a negative:
5.5 = -2 + d = d - 2
5.5 = d - 2
(5.5) + 2 = (d - 2) + 2
7.5 = d

Now if instead of adding 2, you subtract 2, the problem becomes:
5.5 = d - 2
(5.5) - 2 = (d - 2) - 2
3.5 = d - 4

This doesn't solve your problem, it just makes the value needed to be canceled out larger.

Thus d = 7.5 and you will add because the value is negative.
7 0
3 years ago
Read 2 more answers
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