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Alexeev081 [22]
3 years ago
9

What does 25% of 80 equal

Mathematics
2 answers:
ollegr [7]3 years ago
6 0

Answer: 20

Step-by-step explanation:

Anna007 [38]3 years ago
4 0

Answer:

20

Step-by-step explanation:

25*4 equals 100  so 80/4 is 20.

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125.315 to two significant figures
Shalnov [3]

Answer: 130

Step-by-step explanation:

The five rounds up making it 130

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3 years ago
Find the solution of this system of equations:
Evgen [1.6K]

Answer:

y=-3.667

x=

Step-by-step explanation:

-4(10y-59)+10y=86

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6 0
4 years ago
An angle measures 16° more than the measure of its supplementary angle. What is the measure of each angle?
Olenka [21]
82 degrees and 98 degrees


First, find the original equation

180 = (x) + (x + 16)


Simplify: 180 = 2x + 16


Next, use the subtraction property of equality to subtract 16 from both sides


180 - 16 = 2x + 16 - 16


Simplify: 164 = 2x


Then, you can use the division property of equality to find the value of x

164/2 = 2x/2


Simplify: 82 = x



Now, we know that the first angle equals 82 degrees and that the second angle equals 98 degrees
3 0
2 years ago
What is the hypotenuse of a right triangle if the legs are each 20 inches long? Round to the nearest whole number. A. 28 B. 29 C
marusya05 [52]

Answer:

The answer is A.

Step-by-step explanation:

You have to apply Pythagoras Theorem :

{c}^{2}  =  {a}^{2}  +  {b}^{2}

let \: a = 20,b = 20

{c}^{2}  =  {20}^{2}  +  {20}^{2}

{c}^{2}  = 800

c =  \sqrt{800}

c = 28 \: (nearest \: whole \: no.)

P.S (Take note):

Pythagoras Theorem can only applied in <u>r</u><u>i</u><u>g</u><u>h</u><u>t</u><u> </u><u>a</u><u>n</u><u>g</u><u>l</u><u>e</u><u> </u><u>t</u><u>r</u><u>i</u><u>a</u><u>n</u><u>g</u><u>l</u><u>e</u>.

7 0
4 years ago
Read 2 more answers
What is the square root of -121​
Savatey [412]

Answer: sqrt (-121) is 11i

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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