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3 years ago

19. Fill in the numbers to find the100

Mathematics

2 answers:

Ratling [72]3 years ago

8 0

Multiply 20 by 5 and you get 100, please tell if this is what you wanted!

Rom4ik [11]3 years ago

6 0

The fist box would be 40 and the second box would be 10. If you change 4/10 to have the same denominator as 100 it is 40 over 100. and if you say 8 is over 10 then it is 80 / 100. And 80 - 40 = 40, so it is 40.

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A brand of clay brick tiles has the dimensions 3 5 8 by 7 5 8 by 1 2 inch. These thin bricks are commonly used for floors. Estim

raketka [301]

Answer: The cost to tile the floor is $318.24.

Step-by-step explanation:

Since we have given that

Dimensions of floor is 12 by 17 foot.

So, Area of floor would be

$12\times 17\\\\=204\ sq.\ foot$

As we know that 1 foot = 12 inch

So, Area of floor would be

$204\times (12)^2\\\\=204\times 144\\\\=29376\ sq.\ foot$

Dimension of brick tiles is given by

$3\dfrac{5}{8}\ by\ 7\dfrac{5}{8}\ by\ \dfrac{1}{2}$

So, Area of brick tiles is given by

$2(lb+bh+lh)\\\\=2(\dfrac{29}{8}\times \dfrac{61}{8}+\dfrac{61}{8}\times \dfrac{1}{2}+\dfrac{29}{8}\times \dfrac{1}{2})\\\\=2(\dfrac{1769}{64}+\dfrac{61}{16}+\dfrac{29}{16})\\\\=2\times \dfrac{1769+244+116}{64}\\\\=\dfrac{2129}{32}$

So, Number of clay brick would be

$29376\div \dfrac{2129}{32}\\\\=29376\times \dfrac{32}{2129}\\\\=\dfrac{29376\times 32}{2129}\\\\=441.53\\\\\approx 442$

cost of each clay brick = $0.72

So, Total cost of flooring would be

$442\times 0.72\\\\=\$318.24$

Hence, The cost to tile the floor is $318.24.

7 0

3 years ago

Factor completely x2 + 20x − 36.

vodomira [7]

Answer:

Prime

Step-by-step explanation:

x² + 20x − 36

You must find a pair of numbers that multiply to give -36 and add to give +20.

The likely candidates are 2 and 18, and they must have opposite signs to give a negative product.

+2 × (-18) = -36; +2 + (-18) = -16

-2 × 18 = -36; -2 + 8 = +16

Neither combination gives +20 as the sum.

The expression can't be factored with rational numbers.

The expression is prime.

5 0

3 years ago

A E 40 - 200 Z 2 What is 1/2•40•200?

SSSSS [86.1K]

Answer:

4000

Step-by-step explanation:

1/2 · 40 · 200 = 20 · 200
20 · 200 = 4000
4000

Therefore, the answer is 4000.

8 0

2 years ago

Read 2 more answers

Find a pair of square numbers which give a difference of 39

nadya68 [22]

64-25=39 All the square numbers are 1,4,9,16,25,36,49,64,81,100

5 0

3 years ago

Find the diagonal of a square whose sides measure 3 square root 2

mrs_skeptik [129]

The Pythagorean theorem can be used to find the length of the diagonal (d) of a square.

d² = (3√2)² + (3√2)² = 18 + 18 = 36

d = √36 = 6

The measure of the diagonal is 6.

8 0

3 years ago