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sineoko [7]
2 years ago
14

7-x+3=9x+10 help please

Mathematics
1 answer:
Nady [450]2 years ago
4 0

Answer:

7=9x+10+x+3

Step-by-step explanation:7=10x+13

10x=20=10x/10=20/10=2 2 is the answer

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-0.75 7/8 and - 5/8 in order from least to greatest
VMariaS [17]
Hello there!

The answer is:
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-0.75
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5 0
3 years ago
238 +439 round you're answer to the. earest dollar​
Paha777 [63]

Answer:

677

Step-by-step explanation:

238 + 439 = 677

It is t possible to round it form the ones (dollar) place.

8 0
3 years ago
PLEASE HELP!! Low Price Electronics is selling a laptop for $135. The final cost is $143.10 after sales tax. What is the percent
goldfiish [28.3K]

Answer:

6%

Step-by-step explanation:

6 divided by 100 is 0.06.

then you multiply 0.06 by 135 and that is 8.1

then add 8.1 to 135 and you get 143.1 or 143.10

4 0
3 years ago
Over the last three evenings, Donna received a total of 129 phone calls at the call center. The third evening, she received 3 ti
lakkis [162]

Answer:

Number of calls received in 1st evening = 24

Number of calls received in 2nd evening = 33

Number of calls received in 3rd evening = 72

Step-by-step explanation:

Let

number of calls received in first evening be "x"

number of calls received in 2nd evening be "y"

number of calls received in 3rd evening be "z"

Total, in 3 evenings, we have 129 phone calls, so we can write:

x + y + z = 129

3rd evening, 3 times as first evening. We can write:

z = 3x

2nd evening, 9 MORE THAN FIRST. So we can write:

y = 9 + x

Now we replace 2nd and 3rd equation in 1st equation to get:

x + y + z = 129

x + 9 + x + 3x = 129

Now, first, we solve for x:

x + 9 + x + 3x = 129\\5x+9=129\\5x=120\\x=24

Solving for y:

y = 9 + x

y = 9 + 24

y = 33

Solving for z:

z = 3x

z = 3(24)

z = 72

Thus,

Number of calls received in 1st evening = 24

Number of calls received in 2nd evening = 33

Number of calls received in 3rd evening = 72

5 0
3 years ago
What is an equation of the axis of symmetry for the parabola whose equation is y=2x^2-3x+4
krek1111 [17]

Answer:

x = 3/4 or x = 0.75

Step-by-step explanation:

y=2x²-3x+4

y'=4x-3 = 0

x = 3/4 .... answer

or

x = - b/2a    ...y=ax²+bx+c

x = - (-3)/(2*2) = 3/4

4 0
2 years ago
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