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
adoni [48]
3 years ago
9

Pls help I will mark brainlist if correct!! :) choose an answer for part A and B

Mathematics
1 answer:
salantis [7]3 years ago
6 0

Answer:

Part A:

Your answer is D, 20 so you got that correct nice job!

Part B:

I believe it is either D, 4 or A, 1. I believe it is D though so you should choose that. The reason is because there is 4 that are 7 1/4 inches.

Brainliest is very much appreciated.

You might be interested in
Find the value of a if d=80, v^0=50 and t=8
Rina8888 [55]

Answer:

Step-by-step explanation:

you have to multiply

5 0
2 years ago
Jennifer is saving money to buy a bike bike cost $321 she has $129 saved and each week she had $16 to savings how long will it t
valina [46]
12 weeks is the answer
8 0
3 years ago
Read 2 more answers
This question has 2 parts.
Liula [17]

Answer:

um well i can do part A

Step-by-step explanation:

its 6/24 which equals 1/4 yards

3 0
2 years ago
If the answer to the square root is 5, then what is the number that gets you 5
tensa zangetsu [6.8K]
\sqrt x=5\\
x=25

4 0
3 years ago
When an electric current passes through two resistors with resistance r1 and r2, connected in parallel, the combined resistance,
kondaur [170]

Answer:

a)

The combined resistance of a circuit consisting of two resistors in parallel is given by:

\frac{1}{R}=\frac{1}{r_1}+\frac{1}{r_2}

where

R is the combined resistance

r_1, r_2 are the two resistors

We can re-write the expression as follows:

\frac{1}{R}=\frac{r_1+r_2}{r_1r_2}

Or

R=\frac{r_1 r_2}{r_1+r_2}

In order to see if the function is increasing in r1, we calculate the derivative with respect to r1: if the derivative if > 0, then the function is increasing.

The derivative of R with respect to r1 is:

\frac{dR}{dr_1}=\frac{r_2(r_1+r_2)-1(r_1r_2)}{(r_1+r_2)^2}=\frac{r_2^2}{(r_1+r_2)^2}

We notice that the derivative is a fraction of two squared terms: therefore, both factors are positive, so the derivative is always positive, and this means that R is an increasing function of r1.

b)

To solve this part, we use again the expression for R written in part a:

R=\frac{r_1 r_2}{r_1+r_2}

We start by noticing that there is a limit on the allowed values for r1: in fact, r1 must be strictly positive,

r_1>0

So the interval of allowed values for r1 is

0

From part a), we also said that the function is increasing versus r1 over the whole domain. This means that if we consider a certain interval

a ≤ r1 ≤ b

The maximum of the function (R) will occur at the maximum value of r1 in this interval: so, at

r_1=b

6 0
3 years ago
Other questions:
  • felice bought 3/4 of a pound of american cheese at the dell she used 1/2 of the cheese to make sandwhiches how much cheese did s
    11·1 answer
  • 1.) List all interior angles (see image)
    14·1 answer
  • When 21 is subtracted from the square of a number, the result is 4 times the number. Find the positive solution.
    5·1 answer
  • Find the distance from the point (4,2) to the line y= −2.
    8·1 answer
  • Read 2/3 pages in an hour how long would it take to read 20 pages
    7·1 answer
  • Isabella wants the distribution of money spent on advertising to match the distribution of profit gained from each product. If
    14·2 answers
  • Capacity, but only to
    13·1 answer
  • 2(x+3) = 5x + 6 - 3x is it true or false
    8·2 answers
  • SEMESTER 2 Benitez thrax
    10·1 answer
  • Choose the correct answer.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!