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
Leokris [45]
3 years ago
12

Help please, which one is a quadratic expression?

Mathematics
1 answer:
Elza [17]3 years ago
7 0

Answer: -6x^2 + 3 and 1 - 4x^2

Step-by-step explanation:

A quadratic expression is an expression that can be in the form ax^2 + bx + c, where a, b, and c are all constants, and a does not equal 0. (ax must be squared, it can't be raised to a power other than 2)

-6x^2 + 3 and 1 - 4x^2 can be in the form ax^2 + bx + c. Therefore, they are the quadratic expressions.

You might be interested in
John and Pam are paid 38.25 for their work. John worked 1.5 hours and Pam worked 3 hours. They split the money according to the
Nina [5.8K]

John's share of the money is 12.75.

38.25 ÷ 4.5 = 8.5

8.5 · 1.5 = 12.75

7 0
3 years ago
Read 2 more answers
The 1 in the hundred thousands place is the value of the middle 1 911,147,837
andrew-mc [135]
<span>The 1 in the hundred thousands place is the value of the middle of 1 and 4.</span>
4 0
3 years ago
Simplifying rational expressions
Sonbull [250]
1. \frac{(c + 8)(c - 8)}{(c - 8)(c + 3)}_,_
    \frac{c + 8}{c + 3}_,_

2. \frac{n^{2} + 4n - 12}{n^{2} + 2n - 8}_,_
    \frac{n^{2} + 6n - 2n - 12}{n^{2} + 4n - 2n - 8}_,_
    \frac{n(n) + n(6) - 2(n) - 2(6)}{n(n) + n(4) - 2(n) - 2(4)}_,_
    \frac{n(n + 6) - 2(n + 6)}{n(n + 4) - 2(n + 4)}_,_
    \frac{(n - 2)(n + 6)}{(n - 2)(n + 4)}_,_
    \frac{n + 6}{n + 4}_,_

3. \frac{42x^{2}y^{3}}{28x^{3}y}_,_
    \frac{3y^{2}}{2x}_,_

4. \frac{m^{2} - 3m - 10}{m - 5}_,_
    \frac{m^{2} - 5m + 2m - 10}{m - 5}_,_
    \frac{m(m) - m(5) + 2(m) - 2(5)}{m - 5}_,_
    \frac{m(m - 5) + 2(m - 5)}{m - 5}_,_
    \frac{(m + 2)(m - 5)}{m - 5}_,_
    m + 2_,_
3 0
3 years ago
The commuting time for a student to travel from home to a college campus is normally distributed with a mean of 30 minutes and a
Rainbow [258]

Answer:

0.1587

Step-by-step explanation:

Let X be the commuting time for the student. We know that X\sim N(30, (5)^2). Then, the normal probability density function for the random variable X is given by

f(x) = \frac{1}{\sqrt{2\pi(5)^{2}}}\exp[-\frac{(x-\mu)^{2}}{2(5)^{2}}]. We are seeking the probability P(X>35) because the student leaves home at 8:25 A.M., we want to know the probability that the student will arrive at the college campus later than 9 A.M. and between 8:25 A.M. and 9 A.M. there are 35 minutes of difference. So,

 

P(X>35) = \int\limits_{35}^{\infty}f(x)dx = 0.1587

To find this probability you can use either a table from a book or a programming language. We have used the R statistical programming language an the instruction pnorm(35, mean = 30, sd = 5, lower.tail = F)

6 0
3 years ago
Find the value of the unknown number that ma diagram If you need help 5.x = 15 Your answer​
Viefleur [7K]

Answer:

x equals 73

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Why can pierre return the monitor ?
    13·2 answers
  • A store discounts the price of a beanbag chair by 20%. The price of the beanbag chair is marked as $16. What was the original pr
    13·1 answer
  • Can you plz help me I don’t understand
    15·1 answer
  • (-102.75) ÷(-3) round to the nearest hundredth
    11·2 answers
  • 3621 ×4 help me on this please
    15·2 answers
  • Whais the difference when the product of 0.3 and 0.4 is subtracted from the sum of 0.3 and 0.4 ?
    8·2 answers
  • Tony has a 44 inch shelf. The 2 cups shown on the
    13·1 answer
  • (3,1) m=2<br><br>show werek​
    12·2 answers
  • What is the value of x and y?
    7·1 answer
  • What equivalent expressions are related to
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!