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adoni [48]
3 years ago
11

Expand and simplify : A) (x+7)(x+10). B) (X-3) (X-9)

Mathematics
1 answer:
garri49 [273]3 years ago
6 0

Answer:

Step-by-step explanation:

A) Using the foil method and distribution, you should get x²+10x+7x+70 from (X×X)+(X×10)+(X×7)+(7×10). When you combine these like terms, you get x²+17x+70.

B) Using the same ideology from part A, when you multiply x-3 into x-9. you should get x²-9x-3x+27. Simplifying this will give you x²-12x+27.

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Alex Ar [27]

Answer:

I have given the answer

3 0
3 years ago
Help please! ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
solmaris [256]

Answer:

x= 1/2

and y=3

Step-by-step explanation:

Let's solve your system by substitution.

y=10x−2;2x+y=4

Step: Solvey=10x−2for y:

y=10x−2

Step: Substitute10x−2foryin2x+y=4:

2x+y=4

2x+10x−2=4

12x−2=4(Simplify both sides of the equation)

12x−2+2=4+2(Add 2 to both sides)

12x=6

12x

12

=

6

12

(Divide both sides by 12)

x=

1

2

Step: Substitute

1

2

forxiny=10x−2:

y=10x−2

y=10(

1

2

)−2

y=3(Simplify both sides of the equation)

Answer:

x= 1 /2

and y

3 0
3 years ago
Find the volume of a hemisphere that has the radius of 3 m to the nearest 10<br> (PLEASE ANSWER)
vlabodo [156]
Volume of a hemisphere is 2/3•pi•r^3
The answer is 56.5m^3
5 0
3 years ago
WILL GIVE BRAINLIEST
Pani-rosa [81]

Answer:

2¹⁰

Step-by-step explanation:

when the bAse the <em><u>same</u></em>

then,

we take them common and <em><u>add</u></em> their exponents.

7 0
3 years ago
Read 2 more answers
Please help I have no idea how to do this
drek231 [11]
The answer to ypur question is A
7 0
3 years ago
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