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Gwar [14]
3 years ago
9

Seven times the sum of a number and 3 is 9.​

Mathematics
1 answer:
pentagon [3]3 years ago
4 0

Answer: -1.71

7(x+3) = 9 is the equation

7x+21 = 9

7x = -12

x= -12/7

x= -1.71

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What is the percent increase from 50 to 92
STALIN [3.7K]
Hey!

To find the percentage increase, you must use this formula:

{(50 - 92 / 50] × 100 = 84%

So, the percent increase from 50 to 92 is: 84%.
3 0
3 years ago
Read 2 more answers
How do I solve this?​
ziro4ka [17]

Answer:

YZ= 2.8

Step-by-step explanation:

3n+5=8n-9

-3n -3n

5=5n-9

+9. +9

14=5n

14÷5

2.8=n

8 0
3 years ago
Write the equation in standard form of the line that
aleksklad [387]

Answer:

x+2y=0

Step-by-step explanation:

y-y1=m(x-x1)

y-(-2)=-1/2(x-4)

y+2=-1/2x+4/2

y+2=-1/2x+2

y-(-1/2x)=2-2

y+1/2x=0

1/2x+y=0

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6 0
3 years ago
Tell whether the ratios are equivalent: 3 days to 4 hours and 9 days to 12 hours. Show your work.
antoniya [11.8K]

Answer

No

Step-by-step explanation:

Since you 4x3=12 3x3 = 9

3 0
3 years ago
Read 2 more answers
Giselle works as a carpenter and as a blacksmith.
seropon [69]

Step-by-step explanation:

$20/hr carpenter pay

$25/hr blacksmith pay

Let c = hours working carpentry

Let b = hours working as blacksmith

c + b = 30 {equation 1}

20c + 25b = 690 {equation 2}

In equation 1 solve for one variable in terms of the other.

c = 30-b

Substitute that into equation 2:

20(30-b) + 25b = 690

600 - 20b + 25b = 690

5b = 90

b = 90/5

b = 18 hours working as a blacksmith

c = 30-b = 30-18 = 12 hours as a carpenter

3 0
1 year ago
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