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Nat2105 [25]
3 years ago
12

I need help with 7. Please show me how u got to your answer and please do the explanations

Mathematics
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

Blue: 13/100 = 0.13 = 13%

Purple: 130/100=1.3=130%

Step-by-step explanation:

The picture shows 100 cubes in a grid that's 10 by 10. This means the shaded amount is a number out of 100. The first is 13 out of 100 which converts to 0.13 and 13%. The second has all the cubes shaded which means 100/100 which is 1 or 100% plus the last has 30 cubes out of 100 which converts to 0.30 or 30%. Together this makes 130/100 or 1.30 or 130%.

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Do I use LCM or HCF? And how can I decide which to use? (Brainliest if you can answer the whole thing)
kow [346]

Answer:

As far as i know you should go for LCM that would be more convenient and easy to do

4 0
3 years ago
A circle has a circumfernce of 6. It has an arc length of 1
fomenos

Answer:

The circumference formula for a circle is C=πd where C is the circumference, d is the diameter of the circle and π is a constant. If you plug in 6 for C and solve the equation for d like:

6= πd and then divide both sides of the equation by π you get that d = 1.90

To find the central angle of an arc you would use the equation S = rθ where S is the length of the arc, r is the radius of the circle, and θ is the measure of the angle which in this case is unknown. So with S = 1 and r = d/2 = 1.90/2 = 0.9549 you would have an equation that looks like this:

1 = 0.9549θ.  

If you divide both sides of the equation by 0.9549 you get θ = 1.047197 radians.  

The question asked for the angle measure in degrees so you would need to convert the angle measure to degrees by multiplying the degree measurement by 180/π

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8 0
3 years ago
he graph below represents the price of sending video messages using the services of a phone company. What is the constant of pro
Colt1911 [192]

Answer:

24.

Step-by-step explanation:

Basically constant of proportionality is a ratio.

We take two points, we'll take the order pair (2,48)

It will always be y/x so y is 48 and x is 2

48/2    -  now we simplify

answer: 24

hope this helps! :))

8 0
3 years ago
Read 2 more answers
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Amanda [17]

Answer:

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Step-by-step explanation:

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Therefore, for 0 ≤ x ≤ 800, the cost function is:

C(x) = \$8 + \$0.05*x

3 0
3 years ago
In the figure at right, line ​l​ is a line of symmetry, m∠B=8x-4°, and m∠D=2x+14°. Use this information to write an equation and
s2008m [1.1K]

Answer:x=3

Given: angle B = angle D

So, 8x-4=2x+14

8x-2x=14+4

6x=18

Therefore, x=3

6 0
2 years ago
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