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Mila [183]
3 years ago
12

the length of a rectangle is 3 1/4 inches. The width is 4/5 of the length. What is the perimeter of the rectangle

Mathematics
2 answers:
aksik [14]3 years ago
6 0

Answer:

Step-by-step explanation:

Zinaida [17]3 years ago
6 0

Step-by-step explanation:

We can find the perimeter of a rectangle by adding together the length and width and then multiplying that sum by 2.

The width is 4/5 * 3 1/4 = 4/5 * 13/4 = 13/5 = 2 3/5.

3 1/4 + 2 3/5 = 3 5/20 + 2 12/20 = 5 17/20

5 17/20 * 2 = 117/20 * 2 = 117/10 = 11 7/10 in.  

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The speed(S) of a car varies partly directly as its mass(M) and partly directly as the quantity (Q) of fuel in it. When the spee
weeeeeb [17]

Answer:

S varies partly directly as M and Q.

S=C.

S=KMQ+C.

For the first one...

speed=80,m=220,Q=30.

80=K20×30+C.

80=600K+C......(I).equation one.

For the second one....

speed=60,m=300,Q=40.

60=K300×40+C.

60=12000K+C.....(ii). equation two.

Minus eqtn(I) from eqtn(ii).

80=600K+C.

- 60=12000K+C.

K=0.01754~0.018.

Substitute K=0.018 into eqtn(I).

80=600K+C

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80=10.8+C.

C=80-10.8=69.2.

The relation is S=0.018MQ+69.2

when speed is 100 and mass is 250 find the volume.

100=0.018×250×Q+69.2.

100=4.5Q+69.2.

4.5Q=100-69.2

4.5Q=30.8.

Q=30.8/4.5.

Q=6.8~7litres.

6 0
3 years ago
Please explain the answer​
Phantasy [73]

Answer:

  yes

Step-by-step explanation:

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_____

You may recognize that the ratios of side lengths are ...

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A 3-4-5 triangle is a well-known right triangle, as this is the smallest set of integers that satisfy the Pythagorean theorem. They also happen to be consecutive integers, so form an arithmetic sequence. Any arithmetic sequence that satisfies the Pythagorean theorem will have these ratios.

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If you're familiar with trigonometry, you know the law of cosines tells you ...

  c² = a² + b² - 2ab·cos(θ) . . . . where θ is the angle between sides a and b. This reduces to the Pythagorean theorem when θ=90°, which makes cos(θ)=0. If the sides do not satisfy the Pythagorean theorem, cos(θ)≠0 and the triangle is not a right triangle.

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3 years ago
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WINSTONCH [101]

Answer: -7y+8x

Step-by-step explanation: I assume you mean to simplify

Step 1: Remove parentheses : -4y - x - (3y - 9x)

Step 2: -(3y - 9x) = -3y + 9x

Step 3: Simplify: -4y - x - 3y +9x

Step 4: Answer: -7y+8x

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Step-by-step explanation:

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