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const2013 [10]
3 years ago
10

PLEASE IN A RUSH!!!! 80 POINTS

Mathematics
2 answers:
olga_2 [115]3 years ago
8 0

Answer:

b

Step-by-step explanation:

i did the test

elena55 [62]3 years ago
8 0

Answer:

b

Step-by-step explanation:

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Squareroot(y-1) + 3 = y
jek_recluse [69]
Note:xy means x times y and x(y) means the same thing

so
first we get rid of square root then
make the equation equal to zero becaues if
xy=0 then x or/and y=0



squareroot(y-1)+3=y

isolate the squareroot
subtrac 3 from boht sides

squareroot(y-1)=y-3

square both sides (since they are equal, you should be able to square both sides and still make it true)

(squareroot(y-1))^2=(y-3)^2
(y-1)=(y-3)(y-3)
y-1=y^2-6y+9
subtrac y from both sides
-1=y^2-7y+9
add 1 to both sides
0=y^2-7y+10
find what two number multiply to make 10 and add to get -7
the answer is -2 and -5

0=(y-5)(y-2)
therfore
y-5=0
and/or
y-2=0

therefor
y=5 or/and 2 might work
let's try out 2
square root(2-1)+3=2
square root(1)+3=2
1+3=2
false
so 2 doesn't work



let's try 5
squareroot(5-1)+3=5
squareroot(4)+3=5
2+3=5
5=5
true

y=5
7 0
3 years ago
What is (x^4)/(x^0)?
e-lub [12.9K]

Answer:

x^2+4x

Step-by-step explanation:

Use the Foil formula

4 0
2 years ago
HELP ME HELP ME HELP ME HELP HELP MEEEE
fenix001 [56]

Answer:

Infinatly many solutions

Step-by-step explanation:

mark me brainlyest

4 0
3 years ago
Read 2 more answers
Which of the following equations represents the line with a slope of -7/4 and a y-intercept of -11?
san4es73 [151]

Answer:

y = -7/4x - 11

Step-by-step explanation:

formula is y = mx + b

m is the slope

b is the y intercept

y = -7/4x -11

which is the first one

3 0
2 years ago
How is dividing 140 by 20 the same as dividing 1,400 by 200?
Goryan [66]
It's the same only adding a zero at the end
6 0
3 years ago
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