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vampirchik [111]
3 years ago
10

Can you guys help me please with these 2 questions

Mathematics
1 answer:
Ivan3 years ago
3 0
37.13 for the first one and 22.9 for the other
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If - 7 = 9 + x, then -3x + 5 = ?
Vikentia [17]

Answer:

53

Step-by-step explanation:

At first,

- 7 = 9 + x

By subtracting 9 from both sides, we get

-7-9=9+x-9

-16=x

Now,

By substituting the value of x in -3x + 5 , we get

-3x + 5

-3×(-16)+5

48+5

53

8 0
3 years ago
What is the opposite reciprocal of 1/-3
Nataly [62]

Answer:

-3

Step-by-step explanation:

hope this helps

5 0
3 years ago
Read 2 more answers
A bicycle wheel with diameter 16 inches rides over a screw in the street. the screw is on level ground before it punctures the b
weqwewe [10]

The height of the screw = 16 inches.

<h3>How do you determine the number of revolutions in a circle?</h3>

The total distance covered in one revolution will be equal to the perimeter of the wheel. Finally, to find the total number of revolutions, divide the total distance by distance covered in one revolution.

Given that,

Diameter of a bicycle = 16 inches

The distance the bike moves (forward) after the screw punctures the tire = 56π inches

We note that the circumference of the bicycle = π·D = π × 16 = 16π inches

Therefore,

\frac{56\pi }{16\pi } = 3.5

Showing that the bicycle moves three and half complete turns (revolution) where after each complete turn, the screw starts from the bottom of the tire.

The height, h of the screw in the final half turn is given by the relation;

h = A cos(Bx - C) + D

Where

A = Amplitude of the motion = Diameter/2 = 16/2 = 8

P = The period of the motion 2π/B

Bx = The angle described by the motion = Half of one revolution = π = 180°

C = Phase shift = π

D = The mid line = Diameter/2 = 8 inches

Therefore;

h = 8×cos(π - π) + 8 = 16 inches

Hence, After the bike moves forward another 56π inches the height of the screw = 16 inches.

To learn more about number of revolution from the given link:

brainly.com/question/17266654

#SPJ4

8 0
1 year ago
Write an expression for the apparent nth term (a(n)) of the sequence. (Assume that n begins with 1.)
expeople1 [14]

Answer:

34

Step-by-step explanation:

5 0
3 years ago
Suppose you get 28 miles per gallon of gasoline and you are driving at 55 miles per hours using unit analysis find the amount of
ollegr [7]

Answer:

Approximately 1.964 gallons per hour

Step-by-step explanation:

See image

7 0
2 years ago
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