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
Leno4ka [110]
3 years ago
8

In your notebook, set up the following subtraction in a vertical format and select the correct answer. Take -4 + 3a2 from 7a - a

2. -4 a2 - 7 a + 4 -4 a2 + 7 a + 4 -4 a2 - 7 a - 4 4 a2 + 7 a + 4
Mathematics
2 answers:
ahrayia [7]3 years ago
7 0

Answer:

-4a^2+7a+4 , a=2 or -1/4

Step-by-step explanation:

Take -4 + 3a2 from 7a - a2

It means 7a -a^2 - (-4+3a^2)

7a -a^2 +4-3a^2

7a -a^2-3a^2+4

7a -4a^2+4

-4a^2+7a+4

-4a^2+8a-a+4

-4a^2-a+8a+4

-a(4a+1)+2(4a+1)

(-a+2)(4a+1) =0

-a+2=0 4a+1=0

-a=-2 4a=-1

-a/-1=-2/-1 a=-1/4

a=2 or -1/4

Dominik [7]3 years ago
3 0

Answer:

a=2

Step-by-step explanation:

You might be interested in
Identify the graphed linear equation.
Marrrta [24]
C
step by step explanation:
8 0
3 years ago
Math:<br> Please help me I don’t understand and I need to do corrections.
GREYUIT [131]
So, you had done everything right so far (other than squaring the 2), but that was only half of the question.

to find the least common multiple, you need to first figure out what the prime factors have in common.
{2}^{2}  \times 3 \times 5 \\ and \\  {2}^{2}  \times  {3}^{2}  \times 5 \times 7
each have two twos. both have one 5, so we know our answer will look something like
{2}^{2}  \times 5 \times other \: stuff
now to figure out the other stuff... we have to represent the greatest amount of everything that is left, and we have 3s and 7s left over, so we need to figure out how many of each we need.

one has one 3 and one has two, so we need two threes. now our equation is
{2}^{2}  \times {3}^{2}  \times 5 \times stuff

what's the only number we have to deal with? 7...

how many sevens does 60 have? 0, and 630 has 1, so we know we need one 7. our answer becomes
4 0
3 years ago
Simplify using the multiplication rule.
goldenfox [79]

A. the first one is the answer

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Pizza-By-The-Slice sells 7 slices every 10 minutes on average. How many
Dvinal [7]
I think you’re answer is 42 slices of pizza.

the way i worked it out is by finding out how many minutes are in an hour (60 mins). after that i divided it by 10(mins), which would have gotten me 6. therefore i multiplied 7 x 6 which gave me 42.
3 0
3 years ago
Read 2 more answers
[3 (×-4)-7] + [5 (x-1)+5]
pychu [463]
A. 8x-19
i believe i understood what was being asked


3 0
3 years ago
Other questions:
  • Find the inverse of the function f(x) = 2x – 4.
    11·2 answers
  • Solve the equation, and check your solution.<br> -3/5n = -9
    10·1 answer
  • A basketball weighs an average of 22 ounces, and it is possible for its weight to vary at most 0.75 ounces from this average. Wh
    9·1 answer
  • What is the measure of angle x, help
    6·2 answers
  • What is the common ratio of the following geometric sequence 5/12, 1/4,3/20,9/100,27/500
    9·1 answer
  • The data set represents the prices, in dollars, of the items students are selling for a fundraiser. 1, 1, 2, 3, 3, 4, 4, 4, 5, 5
    5·2 answers
  • Explain why 1/2 is not equivalent to 2/5
    12·2 answers
  • Please Help?? Emergency!! I will give extra points and mark you brainiest.
    8·1 answer
  • The length of a rectangle is 6 cm and its area is (6x+18) Square centimeters what is an expression for the width
    5·1 answer
  • In the figure shown the value of a is equal to
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!