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1 year ago

Ch mensuration of class 8

Mathematics

1 answer:

AVprozaik [17]1 year ago

4 0

Answer:

8x^2 + 6xy - 5y^2 + 26

Step-by-step explanation:

See attached image.

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Dennis is cutting construction paper into rectangles for a project he needs to cut one rectangle that is 12 inches times 15 1/4

Nataly_w [17]

Answer:

Dennis need 288.91 square inches of construction paper for his project.

Step-by-step explanation:

Dennis is cutting construction paper into rectangles for a project.

He needs to cut one rectangle that is 12 inches times 15 1/4 inches

First convert the mixed fraction to improper fraction

$15\frac{1}{4} = \frac{(15\times4) + 1}{4} = \frac{61}{4}$

So the area of 1st rectangle is

$A_1 = 12\times \frac{61}{4} = 183 \: in^{2}$

He needs to cut another rectangle that is 10 1/3"" x 10 1/4""

The symbol " means inches

First convert the mixed fraction to improper fraction

$10\frac{1}{3} = \frac{(10\times3) + 1}{3} = \frac{31}{3}$

$10\frac{1}{4} = \frac{(10\times4) + 1}{4} = \frac{41}{4}$

So the area of 2nd rectangle is

$A_2 = \frac{31}{3}\times \frac{41}{4} = 105.91 \: in^{2}$

The total construction paper needed for this project is

$A = A_1 + A_2\\\\A = 183 + 105.91\\\\A = 288.91 \: in^{2}$

Therefore, Dennis need 288.91 square inches of construction paper for his project.

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2 years ago

9. The expression -8x? – 56x written in fully factored form is

Scorpion4ik [409]

Answer:

the answer is C

Step-by-step explanation:

hope this helps!

4 0

1 year ago

A bag contains purple marbles and white marbles, 30 in total. The number of purple marbles is 6 less than 5 times the number of

Nastasia [14]

The answer would be 9

7 0

2 years ago

Read 2 more answers

Can someone Create a word scenario for 2x+0?

zimovet [89]

James runs 1 mile every 2 min. How many miles does he run every 3 mins?

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2 years ago

Find the equation in standard form if the solutions are x={3,-7}

Sever21 [200]

Answer:

x = -4

Step-by-step explanation:

x = 3 - 7

x = - (7 - 3)

x = -4

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2 years ago