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
RoseWind [281]
3 years ago
9

I don't understand the bottom questions. Please help, it's due for tomorrow!

Mathematics
1 answer:
Elena-2011 [213]3 years ago
3 0
I am giving the answers only.

2/5

4/7

5/11

1/5

2/3

3/5

2/15

1/2
You might be interested in
Factor completely 3bx2 − 9x3 − b + 3x. (b − 3x)(3x2 − 1) (b + 3x)(3x2 + 1) (b + 3x)(3x2 − 1) Prime
Daniel [21]
3bx^2-9x^3-b+3x=\boxed{3x^2}\cdot b-\boxed{3x^2}\cdot3x\fbox{-1}\cdot b\fbox{-1}\cdot (-3x)\\\\=\boxed{3x^2}(b-3x)\fbox{-1}(b-3x)=\boxed{(b-3x)(3x^2-1)}\\\\completely:\\use:a^2-b^2=(a-b)(a+b)\to3x^2-1=(x\sqrt3)^2-1^2=(x\sqrt3-1)(x\sqrt3+1)
therefore:\\3bx^2-9x^3-b+3x=(b-3x)(3x^2-1)\\=\underline{\underline{(b-3x)(x\sqrt3-1)(x\sqrt3+1)}}
6 0
4 years ago
Read 2 more answers
The value of a motorbike depreciates by 32% per year. Work out the current value of a motorbike bought 5 years ago for £3600
DaniilM [7]
\bf \qquad \textit{Amount for Exponential Decay}
\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &3600\\
r=rate\to 32\%\to \frac{32}{100}\to &0.32\\
t=\textit{elapsed time}\to &5\\
\end{cases}
\\\\\\
A=3600(1-0.32)^5\implies A=3600(0.68)^5\implies A\approx 523.41601
3 0
3 years ago
-7x is less than or equal to -21
julsineya [31]
The answer is x=3
if you divide each by -7 to isolate x, it’s equal to positive three because 2 negatives make a positive
6 0
3 years ago
Tom's age is 4 of his mother's age. Tom is 12 years old. How old is his mother?
andrezito [222]

Answer: His mom's age is 48

Step-by-step explanation: If his age is 1/4 his mother, then if we know his age, we do the opposite. Multiply his age by 4, we get 48.

4 0
3 years ago
Read 2 more answers
Farmer George is painting 3 chicken coops. He started painting this morning. Now he only has 3/4 of a chicken coop left to paint
mariarad [96]
If Farmer George starts painting in the morning, and only has 3/4 of a chicken coop left to paint:
3-3/4=
12/4-3/4=9/4 painting in the morning
To put it in a mixed number,  2 1/4 (aka 2.25)
3 0
3 years ago
Read 2 more answers
Other questions:
  • Last week a store sold laptops worth a total of $10885 each laptop cost $1555 how many laptops did the store sell last week?
    13·2 answers
  • You launch a ball at an angle of 35 degrees above the horizontal with an initial velocity of 38 m/s. What is the time the ball w
    14·1 answer
  • Olive wants to invite friends over for ice cream.she has a total of 8 pints of ice cream in her freezer.if she spits each pint i
    15·2 answers
  • Tatiana wants to give friendship bracelets to her 323232 classmates. She already has 555 bracelets, and she can buy more bracele
    13·1 answer
  • Which logarithmic equation is equivalent to the exponential equation below 4c=256
    15·2 answers
  • ) Jenna works at a full time job where she earns $13.75 per hour. She is saving up for a vacation trip and already has $213.50 i
    5·1 answer
  • An experiment involves selecting a random sample of 256 middle managers for study. One item of interest is their annual incomes.
    8·1 answer
  • Lthe farmer hgjhbjurd​
    13·1 answer
  • Geometry help needed please !!!
    15·1 answer
  • 0.3 x 0.9 <br><br> Help Please!! WIll mark Brainliest!
    11·3 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!