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3 years ago

2. How many

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

4 0

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In the following diagram,

olga2289 [7]

Answer:

x + 75 = 180, as these two angles form a straight angle.
x = 180° - 75° = 105°

y and x are supplementary angles as p is transversal of l and m:

y + x = 180°
y = 180° - x = 180° - 105° = 75°

z is same as 86° as vertical angles:

z = 86°

w and z are supplementary angles as g is transversal of l and m:

w + z = 180°
w = 180° - z = 180° - 86° = 94°

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3 years ago

The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh

Xelga [282]

Answer:

b 50-h

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers

Simplify 25^ - 1/2 Please explain! I know the answer is 1/5 but why?

lisov135 [29]

$(25)^{-\frac{1}{2} }$

When the exponent is negative, you have to make the number a fraction(1 over the number).

For example:

$25^{-2} = \frac{1}{25^{2} }$

$x^{-1} =\frac{1}{x^{1} }$

This gets rid of the negative, but it leaves the exponent

$(25)^{-\frac{1}{2}} = \frac{1}{25^{1/2}}$

When an exponent is a fraction, it is the square root.

For example:

$x^{\frac{1}{3}} = \sqrt[3]{x}$

$x^{\frac{1}{2}} =\sqrt{x}$

$x^{\frac{1}{4}}=\sqrt[4]{x}$

So...

$\frac{1}{25^{1/2}} = \frac{1}{\sqrt{25} } = \frac{1}{5}$

3 0

4 years ago

Apply the order of operations to simplify each expression.

Nuetrik [128]

Answer:

your right it is 12 great job!

Step-by-step explanation:

7 0

2 years ago

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The difference of 2 numbers is 3 and their sum is 25. What are the numbers? 10 and 15 14 and 11 11 and 13 13 and 12

vagabundo [1.1K]

Let the two numbers be x and y

As given, the difference of two numbers is 3, so

$x-y=3$ or $x=3+y$ ....(1)

And their sum is 25, so

$x+y=25$ .....(2)

Putting x=3+y in equation (2)

$3+y+y=25$

$2y=22$

$y=11$

As, x+y=25

$x+11=25$

$x=14$

So the two numbers are = 14 and 11

8 0

3 years ago