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DochEvi [55]
3 years ago
7

Which value of x makes the question true? x+7=-9​

Mathematics
2 answers:
kotykmax [81]3 years ago
7 0

Answer:

x=-16

Step-by-step explanation:

x+7=-9

x+7-7=-9-7

x=-16

Len [333]3 years ago
3 0

x+7=-9

One way to find the variable in an addition problem is to subtract.

-9-7

This can be solved by adding 9 and 7 and then slapping a '-' sign in front.

9+7=16

-16

hope it helps!

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Please help me with this word problem!
IRISSAK [1]

Answer:

f(g)=25g

Step-by-step explanation:

Let g be the number of gallons so f(g) is the number of miles traveled per g gallons.

We know for our problem that Brian's car gets 25 miles per gallon. Since the gallons is represented by g, his car will travel a total distance of 25g (where g is the number of gallons.

We also know that the total distance is given by f(g), so we can put the two expressions together to get our function:

f(g)=25g

Let's check:

- If he uses 1 gallon (g=1), so

f(1)=25(1)

f(1)=25 miles

He will travel 25 miles with one gallon.

- If he uses 2 gallons (g=2), so

f(2)=25(2)

f(2)=50

He will travel 50 miles with two gallon.

6 0
3 years ago
Mr. Moses baked 11 dozen cookies for his class.
sashaice [31]

Answer:

8 cookies for each student that was present

Step-by-step explanation:

11 total dozens

10 dozens were separated throughout the present students

He has a TOTAL of 19 students but FOUR were absent

19-4=15

a dozen is 12

so 12x10=120

120 divide by 15 = 8

7 0
4 years ago
You have 4 framed portraits. How many ways can you arrange all 4 of them on the top of your bookshelf?.
hichkok12 [17]

Answer: permutation

Step-by-step explanation: sorry if wrong

6 0
3 years ago
A manufacturing unit currently operates at 80 percent of its capacity. The profit function for the unit at the optimum output, x
emmasim [6.3K]
B.
I hope I helped!!!!!!!!!
7 0
4 years ago
Read 2 more answers
3x(x+5y)+2y(7x-y)+4(x^2+2y)
Helga [31]

Answer:

7x^2 + 29xy -2y^2 + 8y

Step-by-step explanation:

3x(x+5y)+2y(7x-y)+4(x^2+2y)

Break all the brackets and you would hot:

= 3x*x + 3x*5y + 2y*7x - 2y*y + 4*x^2 + 4*2y

= 3x^2 + 15xy + 14xy -2y^2 + 4x^2 + 8y

= 3x^2 + 4x^2 +15xy + 14xy - 2y^2 + 8y

= 7x^2 + 29xy -2y^2 + 8y

Hope this help you :3

6 0
3 years ago
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