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
Gnom [1K]
3 years ago
9

WHERE DID CAROLYN MESS UP?

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
6 0

Answer:

line 2 of her working

Step-by-step explanation:

when multiplying the brackets out it is a negative times posative so she should have wrote -4 not +4

You might be interested in
The velocity v of the flow of blood at a distance r from the central axis of an artery of radius R is given below, where k is th
andrew11 [14]
The average rate of blood flow is given by

\displaystyle\frac1{R-0}\int_0^Rv(r)\,\mathrm dr=\frac kR\int_0^R(R^2-r^2)\,\mathrm dr
=\dfrac kR\left(R^2r-\dfrac13r^3\right)\bigg|_{r=0}^{r=R}
=\dfrac kR\left(R^3-\dfrac13R^3\right)
=\dfrac{2kR^2}3
3 0
2 years ago
A old computer model that cost $599(whole) is marked down 5%. How much money will the customer save (what is the discount only)?
Butoxors [25]

Answer:

The discount is 29.95

Step-by-step explanation:

599 x .05= 29.95

8 0
3 years ago
Read 2 more answers
Len walks 3/10 mile in the morning. He walks 2/5 mile in the afternoon to a friends house. Len says that he walks a total of 5/1
andre [41]
No he walks 7/10 of a mile
you have to make 2/5 have a common denominator with 3/10
so 2×2=4 (numerator)
2×5=10 (denominator)
4/10+3/10= 7/10
since you only add the numerator because the denominator makes it a like term
7 0
3 years ago
Habib wants to cover a kitchen wall in ceramic tile. The wall is 42 feet by 10 feet.
Slav-nsk [51]

Answer: Side of largest square tile will be 105 feet.

Explanation:

Since we have given that

dimensions of the wall is 42 feet by 10 feet

So,

Length of wall = 42 feet

Breadth of wall = 10 feet

First we calculate the H.C.F. of 42 and 10,

which is 2 only.

The largest square tile side would be 2 feet.

Now, we find the number of tiles used,

Number of tiles =

\frac{\text{Area of wall}}{\text{H.C.F. of }42\text{ and }11\times\text{ H.C.F. of }42\text{ and } 11}}\\\\=\frac{42\times 10}{2\times 2}\\\\=\frac{420}{4}\\\\=105

We get integer value of number of tiles.

Therefore, Side of largest square tile will be 2 feet.

7 0
2 years ago
I'll give brainlliest to whoever anwsers
postnew [5]

Answer:

Step-by-step explanation:

booom

8 0
3 years ago
Other questions:
  • Can you explain why in detail please?
    6·1 answer
  • Mathematics help needed. <br><br> Which of the following statements are true regarding functions?
    5·1 answer
  • I need to solve for x
    14·2 answers
  • How would you "remove the discontinuity" of f ? in other words, how would you define f(5) in order to make f continuous at 5?f(x
    14·1 answer
  • A plane cuts through a cone parallel to its base. What shape is formed by this intersection?
    11·1 answer
  • The population of a city, P , in millions, is a function of ????, the number of years since 2010, so P = ???? (????). Explain th
    6·1 answer
  • 11/12 divide by 2 5/8
    5·1 answer
  • Which of these numbers has three significant digits?
    11·2 answers
  • Suzy makes 20 dollars an hour at her job. Bill only makes 10 dollars an hour but he has a starting bonus of 20. When will Suzy a
    12·1 answer
  • Find the quotient of (6x^2+x-12)÷(2x+3)​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!