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serg [7]
3 years ago
13

Please help quick! Proportions & Graphs

Mathematics
1 answer:
Triss [41]3 years ago
3 0

Answer:

1. No

2. No

3. Yes

4. No

Step-by-step explanation:

The first one isn't  proportional because it doesn't  start at 0

The second one isn't proportional because there isn't  a pattern between  the coordinates

The 3rd one is a proportional relationship because it starts at 0 and there is an equal amount of space between each coordinate and there is evidentially a pattern.

Finally, the  4th one isn't proportional because the last coordinate doesn't correspond w/ the others

Plz mark me brainliest if correct :)

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The table shows the wavelength of the sound produced by keys on a piano x keys away from the A above middle C.
konstantin123 [22]

Answer:

B 49.44 cm is your answer!

Step-by-step explanation:

I took the test!

7 0
3 years ago
Paula invests £4500 in a savings account
Leni [432]

Answer:

18.61

Step-by-step explanation:

Principle = £4500

Time = 6yrs

Rate = n%

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n = ?

We know,

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£5025 = £4500*6*n/100

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6 0
3 years ago
A cylinder has volume 78 cm³. What is the volume of a cone with the same radius and height?​
OleMash [197]

Answer:

The volume of the cone is 26\ cm^{3}

Step-by-step explanation:

we know that

The volume of a cylinder is equal to

V=\pi r^{2}h

In this problem we have that

V=78\ cm^{3}

so

78=\pi r^{2}h -----> equation A

The volume of a cone with the same radius and height is equal to

V=\frac{1}{3}(\pi r^{2}h) -----> equation B

Substitute equation A in equation B

V=\frac{1}{3}(78)

V=26\ cm^{3}

6 0
4 years ago
Please help quickly with this ​
ladessa [460]

Answer:

x=574

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
If tanx-cotx=5 then what is the value of tan²x+cot²x​
Roman55 [17]

Answer:

27

Step-by-step explanation:

note that tanx cotx = tanx × \frac{1}{tanx} = 1

Given

tanx - cotx = 5 ( square both sides )

(tanx - cotx)² = 5² = 25 ← expand left side using FOIL

tan²x - 2tanxcotx + cot²x = 25

tan²x - 2 + cot²x = 25 ( add 2 to both sides )

tan²x + cot²x = 27

4 0
3 years ago
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