12x+3y=45 solve for y

Answers

Answer 1

Answer: Add 12x to bolth sides 3y=45+12x then divide by 3 y=(45+12x)÷3Hope it helps!

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When two angles areadded together, they
form a 90° angle. One
of the angles is 1/2 the
other. How large Is the
smaller angle?

Answers

Answer:

30 degrees

Step-by-step explanation:

this can be expressed by x+y=90.

1/2y=x

multiply both sides by two to isolate y

y=2x

now sub in 2x for y in the first equation

x+2x=90, 3x=90, divide both sides by 3 to isolate x,

x=90/3=30

now subtract the value of x from 90 to find y

90-x=y, 90-30=y, 60=y

the smaller angle is 30 degrees.

How do you figure out how many 1/4 inches are in 1 inch?

Answers

If you are talking about 1/4 inches, there are four 1/4 inches in one inch. Tip about fractions, the bottom number, the denominator, will tell you how many parts to make a whole. So in you question, 4 is the denominator, and it take 4 parts to make 1 whole. Hope this helps!

There are 4, 1/4 inches in one inch. You can find that out by multiplying the numerator until it is equal to the denominator. And remember the denominator stays the same. :)

39 is 150% of what number plz show work

Answers

Okay 39 is 150% of what number? so like remember whenever you see percent you have to divide by 100
so let's start
First. we have 150% so let's divide 150%/100=1.5

Second. you will multiply 1.5*39= 26%

and you can also do it like easy way.

39/150=0.26
0.26/100=26

39 is 26% of 150

hope i help :p

39 is 26% of 150

100%/x%=150/39
(100/x)*x=(150/39)*x
100=3.84615384615*x
(3.84615384615) to get x
100/3.84615384615=x
26=x
x=26

TRUE or FALSE? When plotting a point on a coordinate plane, the first number in a coordinate pair tells you the number of spaces to move across the x-axis, while the second number tells you the number of spaces to move across the y-axis. (yes i am dumb)

Answers

Answer:

True

Step-by-step explanation:

What is 2 and 928 ten-thousandths as a decimal?

Answers

I think this is the correct answer
2+ 928 = 2 + 0.0928 = 2.0928
---------
10000
I hope i helped you :-)

If the ratio of the purple flowers to black flowers is 4 to 8 and there are a total of 108 flowers,how many of the flowers are purple

Answers

Answer: 36

Step-by-step explanation:

Given : The ratio of the purple flowers to black flowers is 4 to 8.

Let the number of purple flowers be 4x and the number of black flowers be 8x.

Since , there are a total of 108 flowers.

Then we have the following equation :-

$4x+8x=108\n\n\Rightarrow\ 12x=108\n\n\Rightarrow\ x=(108)/(12)=9$

Now, the number pf purple flowers = 4(9)=36

Hence, there are 36 purple flowers.

36 flowers would be purple. Here's why:
The ratio 4:8 is the same as 1:2. This means that of every three flows, 1 is purple and 2 are black.
Since 1/3 of the flowers are purple, you'd take 108 x (1/3), or simply divide by 3. Your answer would be 36, and that's how many flowers are purple.

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