3 years ago

I REALLY NEED HELP PLEASE!!

Mathematics

1 answer:

valina [46]3 years ago

5 0

Answer:

it's a

Step-by-step explanation:

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The length of a rectangle is 3cm more than twice the width. The perimeter of the rectangle is 42 cm. Find the dimensions of the

bogdanovich [222]

The width is 6cm
And the length is two times + 3 of the width
6 X 2 + 3 = 15
Add all 4 sides for the perimeter 6+6+15+15=42
The the dimensions are a rectangle that is 6cm wide and 15cm tall

5 0

3 years ago

Answer both question for 20 points and brainliest

Dmitrij [34]

Answer:

1 - c

2 - A

Step-by-step explanation:

Hey There!

So for the first one we are given the dimensions of a rectangular prism and they want us to find the volume

Remember to find the volume we use the equation

V = length x width x height

so we just plug in the values

v = 2.6 x 2.1 x 3.9 = 21.294

the closest is 20 so C is your answer

For the second one we are given a triangular prism

and they want us to find the volume

$V=\frac{1}{2} bhl$

b = base (10.3)

l = length (4)

h = height (7)

7x4=28

28x10.3=288.4

then we divide by 2

288.4/2=144.2

so your selected answer is correct

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3 years ago

Kate wants to build a fence around her yard. The width of the yard is one-third the length. The perimeter of the yard is 80 feet

bezimeni [28]

The length would be 30 feet, and the width would be 10 feet.

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3 years ago

Find the vertices of the following functions.<br> Y=4(x-2)(x-3)<br><br> Y=-4(x+2)^2 -5

Natalija [7]

1) 5/2 , -1
2) -2,-5

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2 years ago

Solve 2x-8=-2-8. How do I do this

faust18 [17]

Is that negative 2 minus 8? if so put that into the calculator and add 8 to both sides and divide by 2 after that. simple algebra

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3 years ago

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