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
eimsori [14]
3 years ago
6

** ANSWER QUICKLY TIMED QUIZ **

Mathematics
1 answer:
maks197457 [2]3 years ago
4 0
4x^2+32x-28=0\ \ \ |:4\\\\x^2+8x-7=0\ \ \ |+7\\\\x^2+8x=7\\\\x^2+2x\cdot4=7\ \ \ |+4^2\\\\x^2+2x\cdot4+4^2=7+4^2\\\\(x+4)^2=7+16\\\\(x+4)^2=23\\\\Answer:\ B.(x+4)^2=23
You might be interested in
A group of preschoolers has 8 boys and 24 girls. What is the ratio of girls to boys?
marta [7]
1 boy to every 3 girls
6 0
2 years ago
Read 2 more answers
Kelly collected $15, $15, $25, and $29 in the last 4 donations for the class fundraiser. The mean of the donations is _____?
photoshop1234 [79]

Answer:

21

Step-by-step explanation:

To find the mean, add up all the numbers

15+15+25+29 =84

Divide by the number of numbers

84/4 = 21

4 0
2 years ago
Read 2 more answers
What is the fourth term in the binomial expansion (a+b)^6)
Dafna11 [192]

Answer:

20a^3b^3

Step-by-step explanation:

<u>Binomial Series</u>

(a+b)^n=a^n+\dfrac{n!}{1!(n-1)!}a^{n-1}b+\dfrac{n!}{2!(n-2)!}a^{n-2}b^2+...+\dfrac{n!}{r!(n-r)!}a^{n-r}b^r+...+b^n

<u>Factorial</u> is denoted by an exclamation mark "!" placed after the number. It means to multiply all whole numbers from the given number down to 1.

Example:  4! = 4 × 3 × 2 × 1

Therefore, the fourth term in the binomial expansion (a + b)⁶ is:

\implies \dfrac{n!}{3!(n-3)!}a^{n-3}b^3

\implies \dfrac{6!}{3!(6-3)!}a^{6-3}b^3

\implies \dfrac{6!}{3!3!}a^{3}b^3

\implies \left(\dfrac{6 \times 5 \times 4 \times \diagup\!\!\!\!3 \times \diagup\!\!\!\!2 \times \diagup\!\!\!\!1}{3 \times 2 \times 1 \times \diagup\!\!\!\!3 \times \diagup\!\!\!\!2 \times \diagup\!\!\!\!1}\right)a^{3}b^3

\implies \left(\dfrac{120}{6}\right)a^{3}b^3

\implies 20a^3b^3

7 0
2 years ago
explain why there is never a single correct answer to a question that asks you to estimate some quantity
motikmotik
Because others would estimate it differently. 
7 0
3 years ago
What is the slope of the line that passes through (-3,-2) and (3,-1) Give your answer as a fraction
svlad2 [7]
Using slope formula, the slope will be 1/6
7 0
3 years ago
Other questions:
  • Solve for y for y+4x+6=2x^2
    7·1 answer
  • What is the slope of the line that contains the points (3,1) and (2,-3)
    11·1 answer
  • What is the original price if there is a 10% discount and the sale price is 76.50?
    7·2 answers
  • The total length of the stage is 76 feet. If the trap doors are centered across the stage, what is the distance from the left si
    12·1 answer
  • 2x + 9 = 83<br> HELP gOOD ANSWERS ONLY
    14·2 answers
  • F(x)=x^(2)-4x+32 is it true that it equals (0,32) on the y-intercept
    15·2 answers
  • Four times the reciprocal of a number equal 2 times the reciprocal of 8
    12·1 answer
  • Which is a pair of dependent events?
    13·2 answers
  • In a quiz its just middle school work so PLS help me
    13·2 answers
  • A circular pizza has a diameter of 12 inches and is cut into 10 congruent slices. What is the area of each slice, to the nearest
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!