All categories

2 years ago

Reza was very sick and lost 15% of his original weight. He lost 27 pounds. What was his original weight?

Mathematics

2 answers:

OlgaM077 [116]2 years ago

6 0

Answer:

180 pounds

Step-by-step explanation:

W=27/15%

W=180 pounds

rosijanka [135]2 years ago

4 0

Answer:

180

Step-by-step explanation:

Let x be the original weight

x* 15% = 27

.15x = 27

Divide each side by .15

.15x/.15 = 27/.15

x =180

You might be interested in

Identify the graph of the inequality 2(2x-1)+7<13 or-2x + 5≤-10.

xxMikexx [17]

Answer:

Step-by-step explanation:

(

−

)

Expand LHS

→

−

Divide through by

→

is represented on the real line by the interval

(

−

∞

)

This can be represented on the

−

plane by the area to the left of the vertical line

as graph below.

graph{2(2x-1)+7<13 [-10, 10, -5, 5]}

5 0

1 year ago

Prove the trigonometric identity!<br><br> Please help!! 50 Points!

Rudiy27

Answer:

Step-by-step explanation:

For simplicity I will substitue $x$ for β.

$1-sin(2x)=(cosx-sinx)^2\\1-2sin(x)cos(x)=cos^2x-2sin(x)cos(x)+sin^2x\\1=cos^2(x)+sin^2(x)\\1=1$

In the first step I used the identity

$sin(2x)=2sin(x)cos(x)$

And I factored out $(cosx-sinx)^2$

Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

$cos^2(x)+sin^2(x)=1$

That's it!

3 0

2 years ago

Exactly 1 1/3 yard of ribbon is needed to make a bow. Which of the following lengths of ribbon could be used to make a bow with

svp [43]

Answer:

1 and 2/5 yards wastes only 1/15 a yard

Step-by-step explanation:

1 and 1/6 yards would make a waste of 1 and 1/6 yards since you can't make a ribbon out of it. (incorrect)

1 and 2/10 yards would make a waste of 1 and 1/5 yards since you can't make a ribbon out of it. (incorrect)

1 and 2/5 yards

$1\frac{2}{5} -1\frac{1}{3} =\\\\1\frac{6}{15} -1\frac{5}{15} =\\\\\frac{1}{15}$

Wastes 1/15 a yard.

1 and 1/2 yards

$1\frac{1}{2} -1\frac{1}{3} =\\\\1\frac{3}{6} -1\frac{2}{6} =\\\\\frac{1}{6}$

It wastes 1/6 a yard.

2 yards

$2-1\frac{1}{3} =\frac{2}{3}$

It wastes 4/6 a yard.

4 0

2 years ago

If (x-2) is a factor of x^3+kx^2 +12x-8 then k=?

AURORKA [14]

Answer:

k = - 6

Step-by-step explanation:

Since (x - 2) is a factor then x = 2 is a root

Substitute x = 2 into the polynomial and equate to zero, that is

2³ + k(2)² + 12(2) - 8 = 0

8 + 4k + 24 - 8 = 0

4k + 24 = 0 ( subtract 24 from both sides )

4k = - 24 ( divide both sides by 4 )

k = - 6

5 0

2 years ago

Northside Middle School spent $1187.50 on<br> 95 math books. How much did each book<br> cost?

trasher [3.6K]

Answer:

Each book cost $12.50 dollars.

Step-by-step explanation:

1,187.50 / 95 = 12.50

6 0

2 years ago

Read 2 more answers