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natita [175]
4 years ago
15

Which statement describes a unit rate? A) Sara ate 1 cookie B) Sara is driving 16 miles C) Sara is driving 30 miles per 1 hour D

) Sara ate 3 crackers & 1 apple
Mathematics
2 answers:
lapo4ka [179]4 years ago
8 0
A unit rate is a ratio with a number in comparison to 1 (per 1). So, In this case...

C) Sara is driving 30 miles per 1 hour is an example of unit rate.
VikaD [51]4 years ago
4 0
C is correct because it's saying that Sara is driving 30 miles per hour. Unit rate is basically a way of writing or talking about a ratio compared to a value of one and in this case, the value is 30 per hour (1 hour).
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A woman bought a dress at a discount of 16 2/3%. If the woman paid $32.50, what was the original price of the dress?
Anastaziya [24]

Let's let x equal the original price of the dress.


We know that 16.6666% is equal to 0.16666 in decimal form by dividing the percent by 100.


So we can set up the equation:


x-0.16666x=32.50


because we know the discount, and we know that the discount of the original price was subtracted from the original price.


So then let's simplify by taking out x, the common factor:


x(1-0.16666)=32.50


Then solve for x:


x(0.83333)=32.50


\frac{x(0.83333)}{0.83333} =\frac{32.50}{0.83333}


x=39


So now we know that the original price of the dress was $39.

3 0
3 years ago
Can someone help me with my essay
wlad13 [49]
I would use the fact that everything involves math. sleeping, eating, walking, running, brushing your teeth, playing games, the matters are endless because it really just uses angles and how long you’ve been doing an activity.
6 0
4 years ago
on monday, elliot road 6 miles on a bike. on tuesday he rode 6 miles on wednesday he rode 3 times farther than he did monday and
Darya [45]

Answer:

48

Step-by-step explanation:

Because 6 plus 6 is 12 and if he rode 3 times how much he rode on those days it would be 12 times 3 which is 36 than it's 36 plus 12 to get 48

5 0
3 years ago
Read 2 more answers
These two cylinders are congruent. cylinder a has a radius of 4 centimeters. cylinder b has a volume of 176π cubic centimeters.
Dafna11 [192]

The height of cylinder b is 11 cm.

<h3>How to measure the volume of ​​a cylinder?</h3>

The volume of the cylinder is related to the capacity of this geometric figure. Remember that the cylinder or circular cylinder is an elongated and rounded geometric solid.

The formula for the volume of a cylinder is given by:

V = \pi.r^2.h

Where:

  • V: volume
  • π (Pi): 3
  • r: radius
  • h: height

In this case, as the cylinders are congruent, both will have the same radius, thus:

V = \pi.r^2.h\\176\pi=\pi(4)^2(h)\\h=11

See more about height of cylinder at brainly.com/question/14165005

#SPJ4

4 0
2 years ago
Read 2 more answers
After releasing of radioactive material into.The atnosphere from.A nuclear.Powe plant in a country in 1988, the hay in that coun
Radda [10]

Answer:

the question is incomplete, so I looked for a similar one:

<em>After the release of radioactive material into the atmosphere  from a nuclear power plant, the hay was contaminated by iodine  131 ( half-life, 8 days). If it is all right to feed the hay to cows  when 10% of the iodine 131 remains, how long did the farmers  need to wait to use this hay? </em>

iodine's half life (we are given x, we need to find b):

0.5A₀ = A₀eᵇˣ

x = 8 days

we eliminate A₀ from both sides

0.5 = eᵇ⁸

ln 0.5 = ln eᵇ⁸

-0.69315 = b8

b = -0.69315 / 8 = -0.08664

since the farmers need to wait until only 10% of the iodine remains (we already calculated b, now we need to find x):

0.1A₀ = A₀eᵇˣ

0.1 = eᵇˣ

ln 0.1 = bx

where b = -0.08664

x = ln 0.1 / -0.08664  = -2.302585 / -0.08664  = 26.58 days

4 0
3 years ago
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