Step-by-step explanation:
25/-15×9
The answer is -15
Answer:
6 7/15 cups
Step-by-step explanation:
Add the two measures:
3 4/5 + 2 2/3 = 3 12/15 + 2 10/15 = (3+2) +(12/15 +10/15) = 5 +22/15
= 6 7/15
Leibniz used 6 7/15 cups of flour.
Answer: 100mL
Step-by-step explanation:
A 15% alcohol solution contains 15mL alcohol in 100mL solution
In 400ml there will be 400mL·15/100 = 6,000mL/100 = 60mL alcohol
Let the volume of pure alcohol to be added V.
In the new solution there will be (60 + V)mL alcohol
And the total volume will be (400 + V)mL
Concentration required 32% = 0.32
Concentration = (60 + V)mL/(400 + V)mL = 0.32
60mL + VmL = 0.32(400 + V)mL
60mL + VmL = 128mL + V·*0.32mL
VmL - V·0.32mL = 128mL - 60mL = 68mL
V(1 - 0.32)mL = 68mL
V·0.68mL = 68mL
VmL = 68mL/0.68 = 100mL ► alcohol volume to be added
Answer : 100mL
Verification
New solution
There will be 400mL + 100mL = 500mL total volume
There will be 60mL alcohol + 100mL alcohol = 160mL alcohol
The concentration will be 160mL/500mL = 0.32 = 32%
Answer:
c. 84 time pi m squared
Step-by-step explanation:
Formula for volume of a cone: pi times radius squared times height divided by 3
for this you don't need to multiply by pi so it's
12 and radius is 6
6 squared times 7/3
36 times 7/3
83.99999
rounded to 84 time pi m squared
We divide both sides by 160. Therefore, the boat will travel about 0.53 miles in 1 minute.