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2 years ago

Need help can someone explain this problemplease.

Mathematics

1 answer:

user100 [1]2 years ago

3 0

The perimeter = the sum of the length of each side.

The shape with missing sides is a rectangle, and we know that rectangles have equal opposite sides.

The top of the rectangle = 3.5 and now we know all the values of each side.

3.5 + 3.5 + 2.4 + 2 + 2 = 13.4 cm.

The perimeter = 13.4cm

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Is 15b+4=25.6 equivalent to 0.6+15b+4=25.6

pychu [463]

No because
15b + 4 = 25.6
15b = 21.6
b = 1.44

0.6+15b+4 = 25.6
4.6 + 15b = 25.6
15b = 21
b = 1.4

The answers are not the same therefore they are not equivalent.

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2 years ago

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3 years ago

If the altitude is √7, find the volume. 36√7 cu. units 18√7 cu. units 12√7 cu. units

rosijanka [135]

Answer:

$Volume = 12\sqrt{7}$ cubic units

Step-by-step explanation:

Volume of the square pyramid is given as ⅓*area of base*height of pyramid.

Where,

Area of base = 6*6 = 36

Height of pyramid = altitude = $\sqrt{7}$ units

Plug the values into the formula to find volume.

$Volume = \frac{1}{3}*36*\sqrt{7}$

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8 0

2 years ago

If the 50th and 51st terms of an arithmetic sequence are 140 and 142, find the 1st term

morpeh [17]

Answer:

The first term is 42.

Step-by-step explanation:

The common difference is 142 - 140 = 2 so we have

50th term = a1 + 2(50 -1) = 140 where a1 is the first term

a1 + 98 = 140

a1 = 140 - 98 = 42.

4 0

3 years ago

Need help can someone explain this problemplease.​

Need help can someone explain this problemplease.