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evablogger [386]
1 year ago
7

What is the value of x in the equation x-3y = 30, when y = 15? 1 04 8 80 200

Mathematics
2 answers:
True [87]1 year ago
8 0

Answer:

x = 75

Step-by-step explanation:

Given information from the question:

x - 3y = 30

y = 15

We can substitute y = 15 into the equation to find x.

x - 3(15) = 30

x - 45 = 30

x - 45 + 45 = 30 + 45

x = 75

bogdanovich [222]1 year ago
6 0

Answer:

75

Step-by-step explanation:

x-3y=30

x-3×15=30

x-45=30

x=30+45

x=75

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Answer quick and show work
shutvik [7]

Answer:

$15.19

Step-by-step explanation:

Write an equation

8.5% of 14 =

Convert percent into decimal:

8.5% = 0.085

"Of" means to multiply so multiply 0.085 to 14

0.085 x 14 = $1.19

14 + 1.19 = $15.19

8 0
3 years ago
Read 2 more answers
Is it true that a continuous function that is never zero on an interval never changes sign on that​ interval? give reasons for y
Elden [556K]
<span>Yes it is true that a continuous function that is never zero on an interval never changes sign on that interval. This is because of ever important Intermediate Value Theorem.</span>
7 0
3 years ago
The houck family's train traveled 552 miles in 6 hours. The Roberts family traveled at 744 miles in 8 hours which family is trav
rusak2 [61]

Answer: Both families were travelling at the same speed/rate of 1mile/0.65mins or 1mile/0.01hr.

Step-by-step explanation: Speed of Houck family's train = 552m/6hrs

speed of Robert family's train = 744m/8hrs.

Therefore considering Houck speed,

552miles = 6hours

1mile = (6 x 60)/552

= 360/552

= 0.65minutes. Average speed = 1mile/0.65mins. Or 1mile/0.01hr

For Robert

744miles = 8hours

1mile = ( 8 x 60 )/744

= (480/744)minutes

= 0.645

= 0.65minutes. Average speed = 1mile/0.65mins. Or 1mile/0.01hr

Conclusion: Both families were travelling at the same speed/rate.

To get that minutes in hour, just divide by 60 to get concert to hours.

6 0
3 years ago
If r= 37 find the values of p, q, s
kkurt [141]

Answer:

ckfgfuf go he z v g b I g to

Step-by-step explanation:

c I'm x go bc to ggzh it ti

4 0
3 years ago
An item on sale costs 80% of the original price. The original price was $22.
sergejj [24]

Answer:

17.6

Step-by-step explanation:

22 x .80 =17.6

17.6 is 80% of 22 so that would be your answer

8 0
3 years ago
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