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
agasfer [191]
3 years ago
8

Need exercise problems with parentheses and variables

Mathematics
1 answer:
topjm [15]3 years ago
7 0

There are many good exercise problems on

https://www.khanacademy.org/

This website also includes exercise problems for just about any subject and/or grade level.

You might be interested in
it takes Joey 1/6 of an hour write one thank you card. how many cards can he write in 3/4 of an hour?
Sauron [17]
1/6 of an hour is equivalent to 10/60 or 10 minutes.
To find out how much 3/4 of an hour is, change the denominator of both fraction so that they match up. We can make this easier by multiplying 4 by 15 to get 60 (hence an hour) and since we multiplied 4 by 15, we also need to multiply 3 by 15 which gets us 45.
We end up with 10/60 and 45/60 or 10 minutes and 45 minutes.
Half of 10 is 5 so we know we'll have a decimal of .5 in our answer.
4 times 10 equals 40 and 40 plus 5 equals 45, so 4.5.
5 0
3 years ago
Please help me with this question please help me I beg you
Sindrei [870]

Step-by-step explanation:

Given

f(x) = 5 / 2x - 1

f^-1( x) = ?

Let

y = f(x)

y = 5/2x - 1

Interchanging the roles of x and y we get

x = 5/2y - 1

2y - 1 = 5/x

2y = 5/x - 1

y = (5/x - 1)/ 2

f^-1(x) = ( 5/x - 1) / 2

Hope it will help :)

7 0
3 years ago
Are the two triangles below similar?
sammy [17]

Answer:

C

Step-by-step explanation:

Yes <em>because</em><em> </em><em>there</em><em> </em><em>are</em><em> </em><em>two</em><em> </em><em>pairs</em><em> </em><em>of</em><em> </em><em>congruent</em><em> </em><em>corresponding</em><em> </em><em>angles</em><em>.</em>

3 0
2 years ago
The sum of two numbers is 186.The difference between the same numbers is 32. What are the two numbers?
ad-work [718]
182 divided by 2 is 93.Then you subtract 32 from 93 and get 61.SO they two numbers you are looking for is 93 and 61

6 0
3 years ago
A/20 + 14/15 = 9/15 <br><br> Can i get some help?
KiRa [710]
Method 1:

\dfrac{a}{20}+\dfrac{14}{15}=\dfrac{9}{15}\ \ \ \ |multiply\ both\ sides\ by\ 60\\\\60\cdot\dfrac{a}{20}+60\cdot\dfrac{14}{15}=60\cdot\dfrac{9}{15}\\\\3a+4\cdot14=4\cdot9\\\\3a+56=36\ \ \ \ |subtract\ 56\ from\ both\ sides\\\\3a=-20\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{a=-\frac{20}{3}\to a=-6\frac{2}{3}}

Method 2.

\dfrac{a}{20}+\dfrac{14}{15}=\dfrac{9}{15}\ \ \ \ |subtract\ \dfrac{14}{15}\ form\ both\ sides\\\\\dfrac{a}{20}=-\dfrac{5}{15}\\\\\dfrac{a}{20}=-\dfrac{1}{3}\ \ \ \ |multiply\ both\ sides\ by\ 20\\\\\boxed{a=-\dfrac{20}{3}\to a=-6\frac{2}{3}}
3 0
3 years ago
Other questions:
  • Can somebody help me
    13·2 answers
  • Mary reduced the size of a painting to a width of 3.3 in. What is the new height if it was originally 32.5 in tall and 42.9 in w
    13·1 answer
  • Simplify by adding like terms 5w+4wx+3+wx+3w+3+6w<br> please show work?
    15·2 answers
  • How can the name of a prism or a pyramid help you visualize the cross sections of the solid?
    15·2 answers
  • What is equlvelent to the fraction above
    10·2 answers
  • X+5=11 what is it????????
    7·1 answer
  • PLS HELP ASAP:( I NEED ANSWER RN SORRYY HELLPPP
    14·1 answer
  • Judie bought a new necklace. The original price was $80 and the discount was 15% off. What was the sale price of the necklace?
    13·2 answers
  • If a thousand computer is marked of 35% what is the sale price ​
    15·1 answer
  • Where n<br> 5 and r = 2<br> N!/(n-r)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!