Answer:
The correct answer is A) -439
Step-by-step explanation:
Answer:
blank=x=84
Step-by-step explanation:
7*3=(3x)/(4*3)
21=3x/12 simplification
252=3x multiply by 12 on both sides
x=84 divide by three
1. We assume, that the number 40 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 40, so we can write it down as 100%=40.
4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.
5. Now we have two simple equations:
1) 100%=40
2) x%=21
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=40/21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.
7. Solution for 21 is what percent of 40
100%/x%=40/21
(100/x)*x=(40/21)*x - we multiply both sides of the equation by x
100=1.90476190476*x - we divide both sides of the equation by (1.90476190476) to get x
100/1.90476190476=x
52.5=x
x=52.5
now we have:
21 is 52.5% of 40
Answer:
16,000
Step-by-step explanation:
4,000 x 4
16,000
Answer:
Step-by-step explanation:
<u>Volume formula:</u>
- V = 1/3 Bh, B-base area, h- height
<u>Base area:</u>
- B = 3√3a² / 2 = 3√3*4² / 2 = 41.57 in (rounded)
<u>Volume:</u>
- V = 1/3*41.56*12 = 166.24 in³
