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Radda [10]
3 years ago
11

Explain why (a+b)^2 = a^2+b^2 if and only if a=0 or b=0

Mathematics
1 answer:
const2013 [10]3 years ago
7 0

Hope this helps! Because when you would fill in the variables 0=0 which which make the expression too that they’d equal the same.

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The angle of elevation from Madison to the top of the Statue of Liberty is 79 degrees. If Madison is standing 58.2 feet from its
lana66690 [7]
To solve this problem you must apply the proccedure shown below:

 1. You have the following information given in the problem:

 - <span>The angle of elevation from Madison to the top of the Statue of Liberty is 79 degrees.
 - Madison is standing 58.2 feet from its base.

 -Madison is 5 feet tall.

 2. Therefore, you have:

 Sin</span>α=opposite/hypotenuse
<span>
 Sin(79°)=x/58.2
 x=(58.2)(Sin(79°))
 x=57.13 ft

 3. Now, you can calculate the height of the Statue of Liberty, as below:

 height=x+5 ft
 height=57.13 ft+5 ft
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 4. Therefore, as you can see, the answer is: 62.13 ft
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4 0
3 years ago
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Matt bought some boards to build a wooden deck. Some of the boards were 4 ft long and some of the boards were 5 ft long. He boug
Kazeer [188]

Answer:

8 boards.

Step-by-step explanation:

Since he bought a few of each length. The only combination that works is when he bought 5 of the 4 ft long board so 4×5=20. Than he bought 3 of the 5ft boards 3×5=15. 20+15=35 ft worth of boards.

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What is th answer to<br><br>Find the Area: R= 8cm<br>​
inn [45]

Answer:

64 π ( c m ) ^2

Step-by-step explanation:

3 0
3 years ago
PLLLLLLEEEEAAAAAAASSSSSSEEEEEE HEEELLLLLPPPPPP
uysha [10]
1.-5*2+10=0 : this is the answer

2. 1-5(7)=-34 =/= 4
1-10=-9 =/= 1
-4(7)+3=-25 =/= 1
-7+8=1 : this is the answer

3. the slope is \frac{-10-(-5)}{-9-(-2)}= \frac{5}{7}. Answer C
8 0
3 years ago
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In a sequence of numbers, a4=12, a5=14, a6=16, a7=18, and a8=20.
faltersainse [42]

Answer:

you are right, it's a)❤

Step-by-step explanation:

a4=12---> put the formula in it

2×4+4=12

a5=14---> 2×5+4=14

a6=16---> 2×6+4=16

.

.

.

hope it helps❤

6 0
3 years ago
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