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pashok25 [27]
3 years ago
11

Factorise first then solve these equations

Mathematics
1 answer:
trapecia [35]3 years ago
4 0
1) factorised is (x+4)(x+1)=0
So x=-4 x=-1

2) factorised is (a-4)(a-3)=0
So a=4 a=3
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What is the circumference of a 12-inch diameter pizza? Leave the answer in terms of ?.
adoni [48]

Answer:

C = 37.7 inches

Step-by-step explanation:

You are looking for the circumference.

Formula for the circumference-> C=2πr

variables:

c = circumference

r = radius

You have the diameter, which is 12 inches. Radius is half of the diameter. which means r is half of 12 (aka 6).

put the radius where the variable is in the formula.

C=2π(6)

you now have enough information to solve for circumference.

C = 2 * π * 6

C = 37.7

4 0
3 years ago
Find f(x) and g(x) so the function can be expressed as y = f(g(x)). y= <img src="https://tex.z-dn.net/?f=%5Cfrac%7B2%7D%7Bx%5E2%
lisabon 2012 [21]

Answer:

One possible answer is:

f(x) = (2/x) + 3 and g(x) = x².

Step-by-step explanation:

Explanation:

We are to write this equation as y = f(g(x)).  This means we want it to be a composite of functions; in f(x), we take the value of g(x) and use in place of x.

If we let g(x) = x², this means everywhere we see an x in f(x), we will replace it with x².  To make our equation y = 2/x² + 3, working backward we would substitute x for x²; this would give us f(x) = 2/x + 3.

6 0
3 years ago
If Steph Curry can shoot 72 free throws in 12 minutes, how many free throws
dimaraw [331]
He can shoot 6 because at this point we are diving 72 divided by 12 equals 6 hope it helps
3 0
3 years ago
Read 2 more answers
3x+1/5 y= 7 solve for x
TiliK225 [7]
X = -1/15y+7/3

I hope this helps! :>
4 0
3 years ago
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UkoKoshka [18]

Answer:

f(-5)=28

Step-by-step explanation:

f(x)=x²-2x-7

f(-5) means that we have to replace x by -5.

f(-5)=(-5)²-2(-5)-7=25+10-7=25+3=28

4 0
3 years ago
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