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mezya [45]
3 years ago
11

Simplify 4x^​2-3xy+2xy+9x^2

Mathematics
1 answer:
aleksklad [387]3 years ago
3 0

Answer:

13x^2 - xy

Step-by-step explanation:

4x^2-3xy+2xy+9x^2

=13x^2-xy

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Can u guys please answer these Pythagoras theorem questions. First person to answer this questions will be marked as brainest an
VashaNatasha [74]

Answer:

d. 21.5

Step-by-step explanation:

To find the missing side length of each triangle, use the pythagorean theorem. The theorem is a^2 + b^2 = c^2 where a, b, and c are all side lengths of the triangle. a is the smallest lef and b is the other leg while c is always the hypotenuse or longest side.

In d, you'll use it twice to find the missing measure. First use it when a = 12 and b = 20. So you'll have:

12^2 + 20^2 = c^2\\144 + 400 = c^2\\544 = c^2\\\sqrt{544} = c\\ 23.32 = c

Repeat the same process using a = 9 and c = 23.32. Then solve for the b value.

9^2 + b^2 = 23.32^2\\81 + b^2 = 544\\b^2 = 544 - 81\\b^2 = 463\\b = \sqrt{463} \\b = 21.5

4 0
3 years ago
(8) In 10 years, Maria will be 39 years old. Let m represent Maria's age today. Which
makvit [3.9K]

Answer:

(3)

Step-by-step explanation:

if Maria is 39 in 10 years and m is her age today then you would have to add 10 to m to get 39

m+10=39 years old

3 0
4 years ago
Read 2 more answers
Sipho made a 12.5% when he sold a coat for E437.50 .calculate original cost of the coat​
kaheart [24]

Answer:

E500

Step-by-step explanation:

Given x the original price of the coat

437.5 + 0.125x = x

437.5 = 0.875x

x = E500

8 0
3 years ago
3. Given PQ = 7x - 3 and QR = 32 – 2x and PR = 59. What is the value of x? What is the value of PQ? What is the value of QR? Be
olga2289 [7]

Answer:

wag po kayo mag bibigay ng points na marami

Kasi ma iiscam po kayo

5 0
3 years ago
Read 2 more answers
If you gain 7 dollars every 65 second how long will it take to get 50000 dollars
Vlada [557]

Answer:

5 days

(the exact number of days below)

Step-by-step explanation:

65/7=9.28571429

9.28571429 sec = 1 dollar

464285.715 seconds=50000 dollars

464285.715 seconds=5.373677256944 days

4 0
2 years ago
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