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3 years ago

I need help on ( NUMBER 10 )!!

Mathematics

2 answers:

postnew [5]3 years ago

6 0

Answer:

Box 1 = -2 and Box 2=+1.......

SVEN [57.7K]3 years ago

6 0

Answer:

-2.5 if you have to write as a decimal and not a fraction.

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The exchange rate of U.S. dollars to British pounds is .63. You have $4000 to convert to British pounds (£). How many British po

Reika [66]

Answer: £2520

Step-by-step explanation:

You have $4000 to convert to British pounds (?). 4,000*.63=2,520.

7 0

3 years ago

How can 3,5,6, and 7 make 75 using parentheses

galben [10]

6(7+5) + 3
Hope this helps :)

To check:
PEMDAS
7+5 is 12
6(12) + 3
72 + 3
75

4 0

3 years ago

What is the missing number in 12,24,72,288

Ronch [10]

12*2=24
24*3=72
72*4=288
n*(x+1)
288*(4+1)
288*5=1440

5 0

3 years ago

The shorter leg of a right triangle is 5 inches shorter than the longer leg. The hypotenuse is 5 inches longer than the longer l

Licemer1 [7]

Answer:

longer leg: 20 in

shorter leg: 15 in

hypotenuse: 25 in

Formulas:

<u>Pythagorean Theorem</u>

$c^2 = a^2 + b^2$

c ... hypotenuse

a ... one leg

b ... another leg

Pythagorean theorem is used in right triangles (triangles in which one angle is 90°).

Step-by-step explanation:

longer leg: x

shorter leg: x - 5

hypotenuse: x + 5

To find x (longer leg), let's use Pythagorean theorem.

$c^2 = a^2 + b^2\\(x+5)^2 = x^2 + (x-5)^2\\x^2 + 10x + 25= x^2 + x^2 -10x + 25\\x^2 + 10x = 2x^2 - 10x\\0 = x^2 - 20x$

Now let's factorize to get solutions for x.

$0 = x(x-20)$

First solution:

$x = 0$

Second solution:

$x - 20 = 0\\x = 20$

Since a side of a triangle has to be a positive number, x is equal to 20.

Now let's just substitute x back to get side lengths. From the question the lengths are in inches.

longer leg: x = 20 in

shorter leg: x - 5 = 20 - 5 = 15 in

hypotenuse: x + 5 = 20 + 5 = 25 in

6 0

2 years ago

Mai has a piece of cloth that is 8.35 meters long how many 15 centimeters pieces can she cut from the cloth? how much will be le

Helen [10]

$8.35m \times 100 = 835cm \\ 835 \div 15 = 55 \frac{10}{15}$
She can cut 55 pieces from the cloth, and 10cm will be left over.

Hope this helps. - M

7 0

3 years ago