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3 years ago

Factorise: a^2 + 8a - 20

2 answers:

6 0

Which two numbers add up to 88 and multiply to −20?
−2 and 10

Rewrite the expression using the above:

Answer:
(a−2)(a+10)

amm18123 years ago

6 0

You would use the quadratic formula or graph it to find your factors. Your factors are:

(x+10)(x-2)

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In your own words describe surface and area

Oksana_A [137]

Answer:

Hi there!

Surface~ is the outside part, uppermost area

Area~ the extent or measurement of a surface

8 0

2 years ago

Find the sum of 2x+1 and 5x

aliya0001 [1]

Hey!

This could be rewritten as:

2x + 1 + 5x

We can add like terms together:

7x + 1

5 0

3 years ago

Read 2 more answers

(HELP!!!) Please Factor Completely: 9x^2y^2-27x^2y-72y^2+216y

Olegator [25]

Answer:

Can u space them out so i know which ones are exponents

Step-by-step explanation:

4 0

2 years ago

A building may fail by excessive settlement of the foundation or by collapse of the superstructure. Over the life of the buildin

patriot [66]

Answer:

0.1536

Step-by-step explanation:

The computation of probability that the building failure will occur over its life is shown below:-

P(building failure) is

$P(ES \cup C)\\\\ = P(ES) + P(C) - P(ES\cap C)\\\\ = P(ES) + P(C) - P(ES) P (C | ES)\\\\ = 0.12 + 0.06 - 0.12 \times 0.22$

now we will solve the above equation

= 0.18 - 0.0264

After solving the above equation we will get

= 0.1536

Therefore for computing the probability that the building failure will occur over its life we simply applied the above formula.

3 0

2 years ago

What number must you add to complete the square?

Mila [183]

Answer:

D. 49

Step-by-step explanation:

When completing the square, you take the value after x^2 which is 14 and divide it by 2 which equals 7 for which you then square that number which 7 times 7 = 49

6 0

2 years ago