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Verdich [7]
3 years ago
10

A student has a container with a volume of 0.5 liter. He estimates the volume to be 0.4 liter. By what percent is the​ student's

estimate​ off?
Mathematics
1 answer:
Alexxx [7]3 years ago
8 0

Answer:

20

Step-by-step explanation:

0.5-0.4=0.1,0.1/0.5×100= 20

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Ken started a savings account for school. He plans on spending 10% of the money he earns for leisure activities. He needs to hav
KiRa [710]

Answer:

He must earn $2,400 to cover both leisure and $2,160 for school expenses.

Step-by-step explanation:

Let the total amount Ken must earn be k.  Then 10% of that would cover leisure activities and the remaining 90% specifically for school expenses.

Then 0.90k = $2,160, and k = $2,400.

He must earn $2,400 to cover both leisure and $2,160 for school expenses.

7 0
3 years ago
Simplify the expression<br><br> -10r+-4r
Anna [14]
The Answer to this solution is -14r
8 0
2 years ago
Use the quadratic formula to solve the quadratic equation x2 − 8x − 4 = 0.
mixas84 [53]
Hello here is a solution :
<span>x² − 8x − 4 = 0.
</span><span>quadratic equation   ax²+bx+c = 0  when :  a=1 and b= -8 and c = -4
discriminant : d = b²-4ac       d= (-8)²-4(1)(-4) =64+16 =70
x= (-b-rot(d))/2a          </span>x'= (-b+rot(d))/2a    .......conrinu
4 0
2 years ago
Please help! I will not need help with the graph at the bottom just the equation
gladu [14]

isolate y

move y to the right

4y=-2x-8

divide by 4

y = -1/2x -2

solution is

y=-1/2x-2

6 0
3 years ago
Marcus arranged ​16 ​pencils into an ​array​. The array has​ 2​ columns How many ​rows ​are there?
Anna71 [15]

Answer:

8

Step-by-step explanation:

8+8=16

or

16 divided by 2= 8

5 0
3 years ago
Read 2 more answers
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