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KatRina [158]
2 years ago
6

Dr. Norman saw 990 patients last year. This year, the number of patients she saw was 10% lower. How many patients did Dr. Norman

see this year?
Mathematics
1 answer:
Tanzania [10]2 years ago
8 0

Answer:

891 patients

Step-by-step explanation:

10% of 990 is 99. If you want to calculate 10% of a number you just divide it b 10, and 990/10=99. From there you subtract 99 from 990, which gives you 891.

Hope this helps!

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The volume of a landfill doubles every three years. Write an exponential function to represent this.
stellarik [79]
The equation would be: V = A2^(Y/3)

The basic form of an exponential equation is y = ab^x.

The a is the starting amount. In this problem, we don't know that, so we just leave it as a.

The b is the rate. In this case, we are doubling the volume so we times it by 2.

The x is the amount of years. Since it is every 3 years, we can divide the x by 3.
7 0
2 years ago
PLEASE HELP ME!!! I'M BAD AT GEOMETRY!!!
7nadin3 [17]

Answer:

Manuel would be correct, the volumes would be equal.

Step-by-step explanation:

The formulae for finding the volume of pyramids and cones both include dividing three (multiplying by \frac{1}{3}).

Square pyramid formula: \frac{1}{3}×B×h where B is the area of the base. By plugging in numbers we have that B=314.159 and h=5. 314.159×\frac{1}{3}×5=523.5983.

Cone formula: The basic formula is the same: \frac{1}{3}×B×h, but the area of the base is found using the circle formula of π×r². For the cone we have B=314.159 and h=5. 314.159×\frac{1}{3}×5=523.5983.

Since both of these formulas came up with the same answer, we can conclude that Cone W has the same volume as Pyramid X, which is Manuel's answer.

7 0
2 years ago
Hello can you help me with this?
zavuch27 [327]

Answer:

x = 25.5

Step-by-step explanation:

suppose RS and MQ are parallel the sum of angle MRS and RMN would be 180 degrees

2x + x + x 78 = 180 add like terms then subtract 78 from both sides

4x = 102 divide both sides by 4

x = 25.5

3 0
3 years ago
Random Samples 7th Grade Math
dsp73

Answer:

BBB

Step-by-step explanation:

b because they are just kids

4 0
2 years ago
Mrs. Valdez wanted to determine the number of people, p, she could safely take in her car to the fun run. She determined that p
dolphi86 [110]

Answer:

for the first question b,


it doesn't make sense for choice a to have -2 people in the car. You can't have a negative amount of people. For choice choice c, you can't have half a person, and for choice d, Ms. Valdez can only have under 5 people, not five people exactly.


for the second question I need to see the whole inequality, generally there is a variable, and all i see is <-1, which is invalid.


hope this helps, if it does like it pls!!


Step-by-step explanation:


5 0
2 years ago
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