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3 years ago

2. A rectangle has a perimeter of 100. Its

Mathematics

1 answer:

slava [35]3 years ago

8 0

Answer:

Option H

Step-by-step explanation:

Perimeter of rectangle= 2(length) +2(width)

100= 2(5a -22) +2[½(a +1)]

Expand:

100= 2(5a) +2(-22) +a +1

100= 10a -44 +a +1

Simplify:

100= 11a -43

+43 on both sides:

11a= 100 +43

11a= 143

Divide both sides by 11:

a= 143 ÷11

a= 13

Thus, option H is correct.

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5 pens for 4.85 what is the unit price

liraira [26]

Answer:

0.97

Step-by-step explanation:

You only have to divide 4.85 by 5 and you will get the unit price.✨ Trust me I get it right!

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3 years ago

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Lynna [10]

The solution is x=1.

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3 years ago

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Elan Coil [88]

Answer: it’s 70 years

Step-by-step explanation:

6 0

3 years ago

Shoe sizes and foot length are related by the formula S = 3F - 24, where S represents the shoe size and F represents the length

eimsori [14]

Answer:

$\dfrac{S + 24}{3}$

Step-by-step explanation:

$\begin{array}{rcll}S & = & 3F - 24&\\S + 24 & = & 3F&\text{Added 24 to each side}\\F & = &\mathbf{\dfrac{S + 24}{3}}&\text{Divided each side by 3}\\\\\end{array}$

7 0

3 years ago

HURRY PLEASE!!! I NEED TO TURN THIS IN SOON i need an explanation too.

Dominik [7]

Answer:

X = 30°, y = 15° and z = 150°.

Reason: Look below.

Step-by-step explanation:

Hey there!

When we look into the figure, we find that;

For x:

x+ 2x + 90° = 180° {Being linear pair}

or, 3x = 180°-90°

or, 3x = 90°

or, x= 90°/3

Therefore, X = 30°.

For y :

2y = x = 30° {Alternate angles are equal}

or, 2y = 30°

y = 30°/2

Therefore, y = 15°

For z:

2y + z = 180° { Being linear pair}

or, 30°+z = 180°

or, z = 180°-30°

or, z = 150°

Therefore, z = 150°.

Hope it helps...

6 0

2 years ago