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lbvjy [14]
3 years ago
13

7=n+5/2 What is happening to the variable? How do you solve for the variable?

Mathematics
1 answer:
babunello [35]3 years ago
4 0

Answer:

the variable is being increased by 5/2

Step-by-step explanation:

7 = n + \frac{5}{2}

to solve, you isolate the variable

you can do this by subtracting the \frac{5}{2} from both sides

7 - \frac{5}{2} = n + \frac{5}{2} - \frac{5}{2}

the \frac{5}{2} on the right cancels out, leaving you with

7 -\frac{5}{2} = n

which simplifies to

\frac{9}{2} = n

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Dafna1 [17]

8.722 / (-3.56)

Expand \frac{8.722}{-3.56} by multiplying both numerator and denominator by 1000.

\frac{8722}{-3560}

Reduce the fraction \frac{8722}{-3560} to the lowest terms by extracting and cancelling out 178.

-\frac  {49}{20} = -2.45

3 0
3 years ago
-1+21y^4-16y^2+17^2+17y^4+19
quester [9]

Answer:

If you simplify the equation, you will get, 38y^{4} -16y^{2} + 307

Step-by-step explanation:

You have to combine like terms.

-16y^{2} and 17y^{2} are like terms, so you add them together.

6 0
3 years ago
A map is drawn using a scale of 1cm/80 mi
yulyashka [42]

Answer:

280/80 = 28/8 = 7/2 = 3.5 cm

Step-by-step explanation:

the ratio is 1cm/80mi = a cm/280mi

so you get 280cm * mi = 80mi*a cm

so a = 280/80 = 3.5  

8 0
3 years ago
The sum of two numbers is 37 and the difference is 9. What are the numbers
solmaris [256]

Answer:

23 and 14

Step-by-step explanation:

7 0
3 years ago
Cos and sin<br>c=_____ yards rounded to nearest hundredth place
Ilya [14]

Answer: c = 8 yards

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(45) = c/(8*sqrt(2))

c = 8*sqrt(2)*cos(45)

c = 8*sqrt(2)*(1/sqrt(2))

c = 8

----------------

Optionally, you can use the 45-45-90 triangle template which says that the length of the leg of this triangle is x and the hypotenuse is x*sqrt(2)

Since 8*sqrt(2) is the given hypotenuse, this must mean x*sqrt(2) = 8*sqrt(2) so x = 8

8 0
3 years ago
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