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kvv77 [185]
3 years ago
13

1) Whats the formula for the Square of a Sum?

Mathematics
1 answer:
Anton [14]3 years ago
3 0

Answer:

Step-by-step explanation:

(x+y) = x² +2xy + y²

:::::

(x+y)(x-y) = x² - y²

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likoan [24]

Answer:

10 32 -9

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6 0
3 years ago
Use the Law of Cosines to find the missing angle. In triangle JKL, j=3in., k=4in., and l=2.89., find mJ
slega [8]
Using the law of cosine for Triangle KJL, we can write:

j^{2} = k^{2} + l^{2}-2(k)(l)cos(J)  \\  \\ 
2(k)(l)cos(J)=k^{2} + l^{2}- j^{2} \\  \\ 
cos(J)= \frac{k^{2} + l^{2}- j^{2}}{2(k)(l)}

Using the values of k,j and l, we can write:

cos(J)= \frac{ 4^{2} + (2.89)^{2} - 3^{2} }{2(4)(2.89)}  \\  \\ 
cos(J)= 0.664 \\  \\ 
J= cos^{-1}(0.664) \\  \\ 
J=48.39

Rounding to nearest integer, the measure of angle J will be 48 degrees.
So option B gives the correct answer
8 0
3 years ago
Read 2 more answers
A square has an area of 49 cm2. what is the length of each side?​
Deffense [45]

Answer: 24.5

Step-by-step explanation:

3 0
3 years ago
A filing cabinet measures 5 feet high 18 inches wide and 2 feet deep. what is the volume of the filing cabinet?
kykrilka [37]
<h3>Answer: 15 cubic feet</h3>

Explanation:

18 inches = 18/12 = 1.5 feet

The cabinet is 5 ft by 1.5 ft by 2 ft. Multiply the values to get 5*1.5*2 = 15

3 0
3 years ago
What goes into 49 and 50 evenly
solniwko [45]
Nothing, goes into 49 and 50. 
8 0
3 years ago
Read 2 more answers
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