1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
AlladinOne [14]
3 years ago
7

A clerk was asked to change a $10 bill. She returned 9 more dimes than nickels and twenty-one more quarters than dimes. How many

coins of each did she return?
Mathematics
1 answer:
lawyer [7]3 years ago
6 0
Quarters. 34×0.25= 8.50
dimes. 13×0.10= 1.30
Nickels. 4×0.05= 0.20
total=10.00


(21×0.25)+(9×0.10)+(4×0.05)+(4×0.10)+(13×0.25)=10
You might be interested in
this is monomial x polynomial, I need to write an expression with the picture above in simplest form.​
PSYCHO15rus [73]

Answer:

2x(6x+1)

big rectangle - small rectangle = shaded region

4 0
3 years ago
..................<br>..​
natali 33 [55]

Answer:

The answer is C 18

Step-by-step explanation:

4^2+8/4= 16+2=18

3 0
4 years ago
Which graph represents the function f(x)=1/3|x|
hram777 [196]

Answer:

D.

Step-by-step explanation:

if plug in 3 for x and you can see the line crosses at 1 on the y axis.

8 0
3 years ago
Solve the problem, calculate the line integral of f along h
Over [174]
The curve \mathcal H is parameterized by

\begin{cases}X(t)=R\cos t\\Y(t)=R\sin t\\Z(t)=Pt\end{cases}

so in the line integral, we have

\displaystyle\int_{\mathcal H}f(x,y,z)\,\mathrm ds=\int_{t=0}^{t=2\pi}f(X(t),Y(t),Z(t))\sqrt{\left(\frac{\mathrm dX}{\mathrm dt}\right)^2+\left(\frac{\mathrm dY}{\mathrm dt}\right)^2+\left(\frac{\mathrm dZ}{\mathrm dt}\right)^2}\,\mathrm dt
=\displaystyle\int_0^{2\pi}Y(t)^2\sqrt{(-R\sin t)^2+(R\cos t)^2+P^2}\,\mathrm dt
=\displaystyle\int_0^{2\pi}R^2\sin^2t\sqrt{R^2+P^2}\,\mathrm dt
=\displaystyle\frac{R^2\sqrt{R^2+P^2}}2\int_0^{2\pi}(1-\cos2t)\,\mathrm dt
=\pi R^2\sqrt{R^2+P^2}

You are mistaken in thinking that the gradient theorem applies here. Recall that for a scalar function f:\mathbb R^n\to\mathbb R, we have gradient \nabla f:\mathbb R^n\to\mathbb R^n. The theorem itself then says that the line integral of \nabla f(x,y,z)=\mathbf f(x,y,z) along a curve C parameterized by \mathbf r(t), where a\le t\le b, is given by

\displaystyle\int_C\mathbf f(x,y,z)\,\mathrm d\mathbf r=f(\mathbf r(b))-f(\mathbf r(a))

Specifically, in order for this theorem to even be considered in the first place, we would need to be integrating with respect to a vector field.

But this isn't the case: we're integrating f(x,y,z)=y^2, a scalar function.
7 0
3 years ago
Medical researchers are studying a certain genetic trait found in two populations of people, W and X. From an independent random
nadya68 [22]

Answer:

If the proportions of all people who carry the trait are the same for both populations, the probability of observing a sample difference of at least 0.22 is 0.03

Step-by-step explanation:

Given the hypothesis :

H0 : pW = pX

Ha : pW > pX

W - X = 0.22

Pvalue = 0.03

Since the Pvalue gives the probability of obtaining a value or result figure which is atleast as extreme as the observed value. The observed value here is 0.22 resulting from the difference in W and X (W - X).

This can thus be interpreted to mean ; going by the Null (difference between W and X) ; the probability of obtaining a value of atleast 0.22 as difference is 0.03

6 0
3 years ago
Other questions:
  • In studying a random sample of 20 automotive​ batteries, the confidence interval ​(0.22​,0.33​) was constructed for the populati
    6·1 answer
  • Four horses are pulling a wagin.Each horse drinks 45,000 milliliters of water each day.How many liters of water will the horses
    6·1 answer
  • An item costs $360 before tax, and the sales tax is
    12·1 answer
  • What is the total weight in pounds of the books in duanes backpack
    10·1 answer
  • Determine the unit rate.<br> A 4-pound bag of yarn costs $7.56.
    9·1 answer
  • 100 is divisible by which whole numbers
    5·1 answer
  • Arrange in order from least to greatest. -3/5, 7/-10,-5/6
    12·1 answer
  • Sara has 6 gallons of milk. She uses 1/3 of the milk to make hot chocolate. Then, she uses 1/2 of the remaining milk to make coo
    8·1 answer
  • Write a function in any form that would match the graph shown below
    15·1 answer
  • Energy for both renewable and nonrenewable sources originally comes from
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!