Answer:
100
Step-by-step explanation:
She wants to average 85, so adding ALL three of her scores, divided by 3 needs to equal 85.
(75 + 80 + x)/3 = 85
Times by 3.
75 + 80 + x = 255
155 + x = 255
subtract 155.
x = 100
She needs 100 on the third test.
Answer:
1 1/2 OR 1.5 in decimal form
Step-by-step explanation:
If Mrs. Roberts drives 3/4 miles in half a minute, 1/2 x what = 1? 2. Multiply both items by 2. 3/4 x 2 = 6/4, also known as 1 1/2 or 1.5 Hope this helped!!
Answer:
1/25
Step-by-step explanation:
f(x) = 5^x
f(-2) = 5^-2
We know that a^-b = 1/a^b
= 1/5^2
= 1/25
Answer:
It is the hypotenuse of a right triangle with legs 5 and 12.
Step-by-step explanation:
The diagonals of a parallelogram bisect each other. If the angle at which they meet is a right angle, then a right triangle is formed whose legs are half the length of each of the diagonals, and whose hypotenuse is the length of one side of the parallelogram (rhombus).
Here, the triangle's leg lengths are 5 and 12, so the Pythagorean theorem tells us the hypotenuse is ...
√(5²+12²) = √(25+144) = √169 = 13
Since the perpendicular diagonals are 10 and 24 inches long, the side length of the rhombus must be 13 inches long.
HK must be 13 inches because the Pythagorean theorem applies and that's what it says.
Answer: 3:5
Step-by-step explanation:
divide by 8 on both sides:
24/8=3
40/8=5
3:5 ratio
