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Veronika [31]
3 years ago
9

3x - y = 7 y= 2x +2 What’s the answer

Mathematics
1 answer:
ElenaW [278]3 years ago
6 0

Answer:

y=20,x=9

When doing problems like this it is important to always note: whatever you do to one side of the = sign you have to do to the other side.

Step-by-step explanation:

For this problem it helps that they already give you what y equals to so you can plug y in the top equation to figure out what x is. See attachment for step by step process

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Solve 4y - 7 =29<br><br> Quickly done
Murljashka [212]

Answer:

y=9

Step-by-step explanation:

4y-7=29

(add 7 to both sides)

4y=36

(divide both sides by 4)

y=9

7 0
3 years ago
There are 24 boys and 16 girls on a playground. What is the ratio of boys to total number of children on the playground ?
ella [17]

Answer: A

Step-by-step explanation:

Hope this helps :)

7 0
3 years ago
Read 2 more answers
Round to the required accuracy: 374.9073 to 3 s.f.​
Burka [1]

Answer:

375.

Step-by-step explanation:

Significant Figures:

All non-zero numbers ARE significant. ...

Zeros between two non-zero digits ARE significant. ...

Leading zeros are NOT significant. ...

Trailing zeros to the right of the decimal ARE significant. ...

Trailing zeros in a whole number with the decimal shown ARE significant.

5 0
2 years ago
I need some help with my math
katrin [286]
The missing side is 15
6 0
3 years ago
Read 2 more answers
Samuel has $550 dollars in his savings account. Is his bank pays 1.25% annual simple interest and he makes no further withdraws
Olenka [21]

The annual interest paid will be

        1.25%  of  $550  =  0.0125 x $550  =  $6.875    EVERY YEAR !

If the bank is only paying simple interest, and Samuel decides to
leave his money with them for 3 years (I don't know why), then
in return for letting them use his money, the bank will pay him
$6.875 at the end of the first year, another $6.875 at the end of
the second year, and another whole $6.875 (woo hoo !) at the
end of the third year.

Stuffing these numbers into the nearest available Cray, we
learn that when they're summed up, the bank's payments
will be

             ($6.875 + $6.875 + $6.875)  =  $20.625

So, after giving the bank the use of his money for 3 years,
Samuel will have a total of

             ($550 + $20.625)  =  $570.625

in his account.  He can visit the bank at any time during normal
banker's hours (10 AM - 3 PM Mon-Thu) and claim his money. 
When he does that, he should remember to demand that the
half-cent must remain in his account and continue to accrue
interest.  If he does that, and if the bank continues to pay
simple interest at the same rate, then that half-cent will
grow to be a whole cent in only 80 more years.  Samuel
should include it in his will and bequeath it to his estate,
on the off-chance that something unfortunate and unplanned
could happen to him during the next 80 years.

5 0
4 years ago
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