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solong [7]
3 years ago
7

A cube has a surface area of 294 square cm. Find the length of one side.

Mathematics
1 answer:
DerKrebs [107]3 years ago
6 0
Since a cube has 6 sides, we can divide 294 by 6, so we have the area of one side. Since it is a cube, we can just square root that, and you get 7 cm.
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Algebra help please?
Alika [10]

Ok, basically if you want to find when both equations are equal just make them equal to each other. 0.925x^2 - 4x + 20  = -1.125x^2 + 6x + 40.

From there use algebraic steps to find out what x is ( the break - even point ).

0.925x^2 - 4x + 20 = -1.125x^2 + 6x + 40

0.855625x - 4x + 20 = 1.265625x + 6x + 40

-0.41x - 4x + 20 = 6x + 40

-4.41x + 20 = 6x + 40

20 = 10.41x + 40

-20 = 10.41x

-1.92122958694 = x

Rounded to the nearest tenth it's -1.9 = x.

Tell me if I got something wrong :)

3 0
3 years ago
Gwendolyn is asked to solve the equation -4(x-3) = 20. She shows the work below and states that the solution is x=-8
bazaltina [42]

Answer:

x = -2

Step-by-step explanation:

-4(x-3) = 20

-4x + 12 = 20

^ Here, Glendon added 12 to 20 instead of subtracting. Her equation was not balanced.

-4x = 8

x = -2

8 0
3 years ago
How many shirts do I have if have a ratio of 2 to 7 with ten pairs of pants
tiny-mole [99]
2/7 = x/10
cross multiply:
10 * 2 = 20
7 * x = 7x

7x = 20
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3 0
3 years ago
I need help now please, I can’t figure this out
otez555 [7]

Answer:

B. 1,4

Step-by-step explanation:

1. substitute 4x for y in the second equation since we know y=4x(to find x)

6x-4(4x)=-10

2.solve for x

6x-4(4x)=-10

-4•4x=-16x

6x-16x=-10

6x-16x=-10x

-10x=-10

-10x/-10=-10/-10

x=1

3.substitute 1 for x in either equation(since x=1)to find y

y=4(1)

y=4

x,y=1,4

hope this helps!

3 0
3 years ago
An arts academy requires there to be 5 teachers for every 125 students and 4 tutors for every 88 students. How many students doe
nikitadnepr [17]

Answer:

25 students peer teacher, 22 students per tutor, 4 tutors for 81 students

Step-by-step explanation:

You need to find the unit rate,

for the teachers, to find the unit rate would be 125 divided by 5. For tutors it would be 88 divided by 4.

Then to find how many tutors you need for 81 students you would need 4 tutors because you want to divide 81 by the unit rate we got (22), and since the answer would be a decimal (3.68.....) you would need to round the whole number up to four because you cant have a decimal of a person.

3 0
3 years ago
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