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Paraphin [41]
3 years ago
8

The difference between seven times a number and eight more than four times the number

Mathematics
2 answers:
xz_007 [3.2K]3 years ago
7 0

Seven times a number = 7x
Eight more than four times the number = 8 + 4x
.
Suppose x = 5 ,
7x = 7×5 = 35 and
8 + 4x = 8 + 4×5 = 8 + 20 = 28

Nookie1986 [14]3 years ago
3 0

A difference is the result of a subtraction.

Call the number n.

"seven times a number": 7n

"eight more than four times the number": 4n + 8

"The difference between seven times a number and eight more than four times the number": 7n - (4n + 8)

Answer: 7n - (4n + 8)

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mr Goodwill [35]

In Graph x-axis represents number of visits and y-axis represents cost.

As graph comes up to be a linear one, so we can clearly say that cost is increasing linearly in multiples of 5.5 with increase in number of visits.

Example :

If museum is visited once then cost (y) = 5.5 x 1 = 5.5

If museum is visited twice then cost (y) = 5.5 x 2 = 11

If museum is visited thrice then cost (y) = 5.5 x 3 = 16.5

... cost (y) goes on in creasing when number of visits (x) increase with multiples of 5.5

5 0
3 years ago
A school has a hurdle track that is of one fifth of a mile long. They are considering extending the track to be one fourth of a
alina1380 [7]

Answer:


Step-by-step explanation:

24


7 0
3 years ago
Please help and explain questions 20-22
zmey [24]
Hello!

The formula for circumference is 2\pi r and the formula for area of a circle is \pi r^{2}. Armed with these formulas, we can begin to find the circumferences and areas of the circles.

20. 
C = 2 \pi r
C = 2 \pi (6.5)
C = 13 \pi
C = 13(3.14)
C = 40.8

A = \pi r^{2}
A = \pi (6.5)^{2}
A = \pi (42.25)
A = 132.7

The circumference of the circle is 40.8 in and the area of the circle is 132.7 in².

21.
[Since we are given the diameter for this problem, to find the circumference, we no longer need to multiply the radius by 2 as in 2 \pi r because the diameter is the radius × 2. For \pi r^{2} we do need to divide the diameter by 2.]

C = 15.7 \pi
C = 49.3

A = \pi r^{2}
A = \pi (7.85)^{2}
A = 61.62 \pi
A = 193.5

The circumference of the circle is 49.3 in and the area of the circle is 193.5 in².

And that is all there is to it. I hope this helps you! (:
6 0
3 years ago
If you were to measure a person once a year, every year, from the ages of ten to twenty-five, would your ordered pairs of age an
Natasha2012 [34]

Answer:

Yes.

Step-by-step explanation:

First, make a graph, or imagine one.

I'll be making an example graph that only goes up to 13 here.

           Age - 10    11     12    13

Height

v

6ft

5ft

4ft    

           

If we mark this graph with points, you will find that there is only 1 point on each age line!

           Age - 10    11     12    13

Height

v

6ft                                          *

5ft                          *       *

4ft                  *

This means the answer is yes!

4 0
3 years ago
Read 2 more answers
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aliina [53]

Answer:

Horizontal, 0, y

Step-by-step explanation:

4 0
2 years ago
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