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Tcecarenko [31]
3 years ago
13

CAN SOMEONE PLEASE HELP ME OUT?!

Mathematics
1 answer:
Artyom0805 [142]3 years ago
4 0
A. Perfect square trinomial: a²+2ab+b²=(a+b)²
B. Difference of perfect squares: a²-b²=(a-b)(a+b)
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A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal?
aliina [53]

Answer:

41 units

Step-by-step explanation:

Rectangles have right angles, so we can use Pythagorean theorem to find the diagonal.

c² = a² + b²

c² = 9² + 40²

c² = 81 + 1600

c² = 1681

c = 41

4 0
3 years ago
A small airplane takes off from point A and continues to climb upward in a straight line, as shown in the diagram. What is the p
harkovskaia [24]
<h3>Answer: Choice D.  12,600 feet</h3>

============================================================

Explanation:

We have two similar triangles here, so we can set up the proportion below to solve for x

5200/(5200+6500) = 5600/x

5200/11700 = 5600/x

5200x = 11700*5600 .... cross multiply

5200x = 65,520,000

x = (65,520,000)/(5200)

x = 12,600 which shows why the answer is choice D

side note: 12,600 ft = 2.386 miles approximately

6 0
2 years ago
How would I solve The product of -4.6 and a number is 8.4 more than the number. Find the number.
kykrilka [37]
I don't think I know that!!!
7 0
3 years ago
Solve the formula 4x+7y=9 for y.
satela [25.4K]
X=0.5
y=1

(4x0.5) + (7x1) = 9
2 + 7 = 9
5 0
1 year ago
ON TIMER!!!
Anton [14]

Answer:

I'm sure it is 180 degrees

8 0
2 years ago
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