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TiliK225 [7]
3 years ago
10

How do you do factor x²-49?

Mathematics
1 answer:
Allisa [31]3 years ago
3 0

Answer:

(x-7)*(x+7)

Step-by-step explanation:

49 can be factored as 7*7 = 7^2

x^2 - 49

= x^2 - 7^2

You also learned that a^2 - b^2 = (a-b) * (a+b), so in this case:

x^2 - 7^2  = (x-7) * (x+7)

So x^2 - 49 factored to become (x-7)*(x+7)

Hope this help you :3

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What is the simplified form of the expression -2(-5x - 8)?
Deffense [45]

Answer: 10x+16

Step-by-step explanation:

Use the distributive property a(b+c)= ab+ac

so

-2(-5x-8) = (-2 * -5x) - (-2* -8)

=

10x-(-16)

=10x+16

Hope this helped!

3 0
3 years ago
I have no idea how to do this
lakkis [162]
Add them all together and you’ll get your answer



sorry if this wasn’t any help or poorly explained
8 0
2 years ago
2. Write two numbers that are opposites and each more than 6 units away from 0.
Yuki888 [10]

Answer:

-7, 7

Step-by-step explanation:

Opposites are basically two numbers that are at different sides of the number line. For example, -2 and 2 are opposites because they are the same distance away from 0 on a number line making them opposites. To make an opposite just take a positive number, and then add a negative to it. (8, -8)

7 0
3 years ago
Wassily Leontief (1906-1999) was a Russian-born, American economist who, aside from developing highly sophisticated economic the
yKpoI14uk [10]

Answer:

The reason for the columns adding up to 1 is that each individual consumes a proportion or a fraction of the total quantity produced under each product category and every product is consumed.  There is no leftover.

When the proportions of all the individuals are added up, the sum is always 1 under each product category because each individual can only consume a part of the whole.

Step-by-step explanation:

a) Data and Calculations:

                        Food   Clothes  Housing  Energy  High Quality 100

                                                                                Proof  Moonshine

Farmer             0.25      0.15       0.25        0.18            0.20                    

Tailor                0.15      0.28       0.18         0.17            0.05

Carpenter        0.22      0.19       0.22        0.22           0.10

Coal Miner       0.20      0.15       0.20        0.28           0.15

Slacker Bob     0.18      0.23        0.15        0.15            0.50

Total                 1.00      1.00        1.00         1.00            1.00

6 0
3 years ago
Calcula el área de la siguiente figura
andreyandreev [35.5K]

Answer:

272.5 m²

Step-by-step explanation:

1/2x4x9=18

(9+18)/2=13.5. 13.5x11=148.5

(18+14)/2=16. 16x7=112

12+148.5+112= 272.5

5 0
3 years ago
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