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Stels [109]
3 years ago
10

Mrs.Anderson writes a check for 10.50 to each of her four nieces. What will be the total change in Mrs.Andersons checking accoun

t balance after all four checks are cashed?
Mathematics
1 answer:
frez [133]3 years ago
5 0

Answer:

-42

Step-by-step explanation:

Since she is handing them equally to her four nieces, then she has to do 10.50 x 4

= 42 since they are asking how much checks were cashed, the answer will be negative so therefore the answer is $-42

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A certain drug is made from only two ingredients: compound A and compound B. There are
NISA [10]

Answer:

425 milliliters of compound A are needed

Step-by-step explanation:

We were told that 5 milliliters of compound A and 6 milliliters of compound B is needed to make the drug.

This means that each drug contains 11 milliliters of both compounds.

\frac{935}{11}=85 milliliters is the volume of each drug.


Therefore the chemist needed 5\times 85=425 millilirteres of compound A.

3 0
3 years ago
Elijah calculated the area of a circle to be 900π units². Which of the following was the radius of the circle?
scZoUnD [109]

Answer: A. 30

Step-by-step explanation:

The formula for the area of a circle is pi*r^2, where r is the radius of the circle.

900pi = pi*r^2

Divide both sides by pi.

900 = r^2

Square root both sides.

r = +/- 30.

Since the radius cannot be negative, the answer is 30 units.

7 0
2 years ago
Please help, I'll mark brainliest.
GREYUIT [131]
I'm almost certain it's C :)
8 0
3 years ago
Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain
sergey [27]
The rise or an increase in altitude is represented by positive sign and a decend or decrease in altitude is represented by negative sign. 

First the helicopter descended 1200 feet. So the change in altitude will be -1200 feet.

Then the helicopter rose by 800 feet. So the change in altitude will be 800 feet.

Finally the helicopter descended by 450 feet. So the change in altitude will be -450 feet.

The net change in altitude will be the sum of all the above 3 changes. 
Change in altitude = -1200 + 800 - 450 = -850 feet

The negative sign indicates a descend i.e. loss in altitude. So the net change in altitude was a loss of 850 feet. 
3 0
3 years ago
35 lbs of apples cost $420. <br> How much would 6 lbs cost?
Ymorist [56]

Answer:

$72

Step-by-step explanation:

one lb costs $12 so just multiply it by 6

3 0
3 years ago
Read 2 more answers
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