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3 years ago

What is the value of y in the equation 9 + y = 8? this is extremely time sensitive

Mathematics

2 answers:

dmitriy555 [2]3 years ago

6 0

Answer: y =-1

Step-by-step explanation:y =-1

Last option is correct.

Step-by-step explanation:

The given equation is

In order to solve for y, we need to isolate y.

In this equation 9 is added with y and hence in order to eliminate 9 from the left hand side, we do reverse operation of addition.

The reverse operation of addition is subtraction. Hence, we subtract 9 to both sides of the equation

adoni [48]3 years ago

5 0

You have to switch the 8 to the left and the y to the right which would change the equation to 9-8=y

y=1

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Which graph shows a system of equations with no solutions?

podryga [215]

Graph of Parallel lines shows a system of equations with no solutions

Step-by-step explanation:

Consider a set of equations

$7x - 2y = 16\\21x + 6y =24$

If we solve this both equations using any one of the solving method, (Substitution method) then we will get

$7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}$

substituting the following x in 2nd equation (21x + 6y = 24) We get

$21(\frac{16+2y}{7} )+6y=24\\3(16+2y)+6y=24\\48+6y+6y=24\\12y=24-48\\y=-\frac{24}{12} \\y=-2$

Put y= -2 in x equation

$x=\frac{16+2(-2)}{7}\\ x=\frac{16-4}{7}\\\x=\frac{12}{7} \\x=1.71$

Comparing these (x,y) values we can understand that they never meet at a point

4 0

3 years ago

Has a slope of 1/2 and passes<br> through the point (-2, 4).<br> Need the equation please

nikklg [1K]

Answer: Mark me brainliest..

Step-by-step explanation: and imma put the answer inside the comments if you do so. youve got nothing to lose! :D

5 0

3 years ago

Read 2 more answers

The big dog weighs 5 times as much as the little dog. The little dog weighs 2 3 as much as the medium-sized dog. The medium-size

disa [49]

Answer:

The answer to your question is the big dog weighs 120 pounds

Step-by-step explanation:

Data

big dog = b

medium dog = m

small dog = s

Equations

b = 5s

m = 12 + s

s = 2/3 m

Process

1.- Substitute m in the last equation

s = 2/3(12 + s)

s = 24/3 + 2/3s

s - 2/3s = 8

1/3 s = 8

s = 8(3)

s = 24 pounds

2.- Substitute s in the first equation

b = 5(24)

b = 120 pounds

4 0

3 years ago

This should be the last question for the day...hopefully

andrew11 [14]

I’d think it’s equated to the one, why I think that? Idek.

5 0

3 years ago

2 to the fourth power subtracted by 8 multiplied by 2 divided by 4 simpified

Korvikt [17]

2^4-8x2/4 (PEMDAS) Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction

first you want to do exponents.. so 2x2x2x2 = 16

then you want to do multiplication so.. -8x2 = -16

now you have.. 16-16/4 .. then you want to do division so divide -16 by 4 and get -4

then you're left with 16-4 which is 12

THE ANSWER IS 12

6 0

3 years ago