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Sonja [21]
2 years ago
10

I'll add a photo of the problem! ​

Mathematics
1 answer:
Lyrx [107]2 years ago
6 0

Answer:

its d

Step-by-step explanation:

the number 30 is not listed in the problem there that is info that is not there

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Evgen [1.6K]
Multiply both sides by -8.
Then add the one to both side to cancel it out and get 7x by itself
Then divide the whole thing by 7. So it’ll look like this: 32+1=7x and then add the one then divide by 7
4 0
3 years ago
Simplify this expressions 5x -7 + 3x + 10
Cerrena [4.2K]

Answer:

8x + 3

Step-by-step explanation:

=5x+−7+3x+10

=(5x+3x)+(−7+10)

=8x+3

5 0
3 years ago
A truck driver travels at 59 miles per hour. The truck tires have a diameter of 30 inches. What is the angular velocity of the w
Misha Larkins [42]

Answer:

661.4\ rpm

Step-by-step explanation:

we know that

1 mile=63,360 inches

step 1

Find the circumference of the wheels

C=2\pi r

we have

r=30/2=15\ in -----> the radius is half the diameter

substitute

C=2\pi(15)

C=30\pi\ in

assume

\pi =3.14

C=30(3.14)=94.2\ in

Remember that    

The circumference of the wheels represent one revolution

Convert 59 miles per hour to inches per minute

59\ mi/h=59*63,360/60=62,304\ in/min

using proportion find the number of revolutions  

\frac{1}{94.2}\frac{rev}{in}=\frac{x}{62,304}\frac{rev}{in}\\ \\x=62,304/94.2\\ \\x=661.4\ rev

therefore

substitute

62,304\ in/min=661.4\ rev/min=661.4\ rpm

5 0
3 years ago
Please very soon I offer the crown !!! + 10 points urgently !!!
krek1111 [17]

Answer:

For 90:

9 10p coins

7 10p coins and 1 20p coin

5 10p coins and 2 20 p coins

3 10p coins and 3 20p coins

For 60:

6 10p coins

4 10p coins and 1 20p coin

2 10p coins and 2 20p coins

3 20p coins

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please help? <br> What is the period? <br> A. 1440<br> B. 360
zlopas [31]
This is a, 1440!!!! :)
8 0
3 years ago
Read 2 more answers
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