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Nataliya [291]
3 years ago
15

-6y+15= -27 what is y?

Mathematics
2 answers:
stealth61 [152]3 years ago
8 0

Answer:

y=7

Step-by-step explanation:

-6y= -27-15

-6y= -42

y=7

AleksandrR [38]3 years ago
8 0

Answer:

‐6y= ‐27‐15

‐6y= ‐42

y= ‐42/‐6 minus minus sign will be cut

y=7

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Serious help please!!
nevsk [136]
The last one is the answer(y,y-5,and y+7)
8 0
3 years ago
Tell how you can determine whether a number is a solution of an equation.
PIT_PIT [208]
By switching the unknown (x) with the number and seeing if one side really equals the other. 

For example, by solving the equation 8/2+3*4+2*X= 10+5*x, we will find that x is the number 2, or that number two is the solution to our equation. To check whether this is true, we have to switch the letter x in the equation with the number 2, so if the results on both sides are the same, our solution is correct. 

In this case 8/2+3*4+2*2=10+5*2
Or                 4+12+4=10+10
                           20=20 
Which proves that the number 2 is really the solution to the equation.
5 0
4 years ago
How much sales tax should be added to the price of goods that sell for $15.00 if the tax rate is 6%?
lorasvet [3.4K]

Answer:

$0,90

Step-by-step explanation:

\frac{3}{50}(15) = \frac{9}{10} \\  \\ 6\% \: of \: 15 = 0.9

I am joyous to assist you anytime.

8 0
3 years ago
Can someone please help me on this??
Usimov [2.4K]

Answer:

C

Step-by-step explanation:

To solve this use the equation x^2 -15x - 50 = y given in the problem and the value y = 50. Substitute y = 50 then solve for x by factoring.

x^2 -15x - 50 = 50\\x^2 - 15x -100 = 0

Find two numbers which multiply to -100 and also add to -15. The numbers are -20 and 5.

So the factored form is (x-20)(x+5) = 0.

Set each factor equal to 0 and solve.

(x-20) = 0 so x = 20.

(x+5)=0 so x = -5.

This means the temperature is 20 degrees C or -5 degrees C. Only 20 is an option. The solutions is C.

3 0
3 years ago
How do i make a # line with fractions and decimals?
Ulleksa [173]
Easy..

let's take a view fractions and decimals and make a little example ourselves...

Let's use: \frac{1}{4}, 0.75, \frac{1}{2}, and 1

Keep it simple...

So, now let's plot those on a number line...it's fairly easy...

Just change those fractions into decimals to make them easier to manage...

\frac{1}{4} =0.25
and
\frac{1}{2} =0.50

Leaving you with: 0.25,0.75,0.50, and 1.

Now, plot..



0      |    |   |   |    |    |    |     |     |      |      |      |    |    1

        (0.25)         (0.50)               (0.75)                  (1)

Easy. :D
7 0
3 years ago
Read 2 more answers
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