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Anon25 [30]
3 years ago
14

Evaluate the expression 5(9-4)^2-3^2

Mathematics
1 answer:
Kay [80]3 years ago
3 0
<span>5(9-4)^2-3^2
5(5)^2-3^2
5(25)-9
125-9
116</span>
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Are the ratios 2:3 and 12:18 equivalent?
lesya692 [45]

Answer: Yes

Step-by-step explanation:

Yes, they are, because if you multiply 2*6=12 and 3*6=18, so here we multiplied both 2 and 3 by the same number (6) and we got the same result 12:18. This method also works with fractions.

6 0
3 years ago
Read 2 more answers
Which of the following is true about the right triangle?
katrin2010 [14]

Option 1. cos (a) = \frac{3}{5}, option 3. sin (a) = \frac{4}{5}, and option 5. tan (a) = \frac{4}{3} are true about the right triangle.

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Here the hypotenuse measures 15 units. Assume the other side measures x.

15^{2} = x^{2} +9^{2} , x^{2} = 15^{2} -9^{2} .

x^{2} = 144, x= 12.

Step 2:

sin \theta = \frac{oppositeside}{hypotenuse} ,cos \theta = \frac{adjacentside}{hypotenuse} , tan \theta = \frac{oppositeside}{adjacentside}.

For angle A, the opposite side is 12 units long, the adjacent side is 9 units long and the hypotenuse is 15 units long.

sin (a) = \frac{12}{15} ,cos(a) = \frac{9}{15} , tan(a) = \frac{12}{9}.

sin (a) = \frac{4}{5} ,cos (a) = \frac{3}{5} , tan (a) = \frac{4}{3}.

So option 1. cos (a) = \frac{3}{5}, option 3. sin (a) = \frac{4}{5}, and option 5. tan (a) = \frac{4}{3} are true about the right triangle.

3 0
3 years ago
-8≤2/5(k-2)<br><br><br><br> How do i show my work<br> will give BRAINLEST
Gala2k [10]
I solved the problem and am including the work along with the twos in the answer. I understand being able to do the work in your head but try to write down each step you do, even if it’s in you head. Have a nice day!

Brainliest if this is correct pls and thank you!

5 0
3 years ago
H14
lys-0071 [83]

uh I don't unerstand that :(

4 0
2 years ago
Bob is having a party with 57 guest he wants everyone to have an equal piece .
Rainbow [258]
That depends on how many people are there. but it would be hey 19 each if there were 3
3 0
3 years ago
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