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
Stels [109]
3 years ago
11

Please help me please!!!

Mathematics
1 answer:
Tju [1.3M]3 years ago
4 0
B -3, hope it helps:)
You might be interested in
What is the answer ? <br> 640 <br> 240<br> 300<br> and 320
patriot [66]

Step-by-step explanation:

10±10±30±30=80

8round = 80×8=640

<h2>don't forget me to follow</h2>
8 0
3 years ago
Read 2 more answers
It was reported that 23% of U.S. adult cellphone owners called a friend for advice about a purchase while in a store. If a sampl
leva [86]

Answer:

P(X=7)

And using the probability mass function we got:

P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271  

Step-by-step explanation:

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n=15, p=0.23)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

And we want to find the following probability:

P(X=7)

And using the probability mass function we got:

P(X=7)=(15C7)(0.23)^7 (1-0.23)^{15-7}=0.0271  

5 0
3 years ago
Is 16x^2-56x+49 a perfect square trinomial? How do you know ? If it is, factor the expression. Please show your work
daser333 [38]

Answer:

  • yes
  • (4x -7)^2

Step-by-step explanation:

If it is, the first and last terms are perfect squares, and the middle term is twice the product of the roots of those squares.

  16x^ = (4x)^2 . . . . a perfect square

  49 = 7^2 . . . . . . . a perfect square

  -2(4x)(7) = -56x . . . . . matches the middle term, so the factoring is ...

  16x^2 -56x +49 = (4x -7)^2

_____

The sign in the binomial factors is the same as the sign of the middle term of the trinomial.

6 0
3 years ago
Which values, when placed in the box, would result in a system of equations with no solution? Check all that apply.
son4ous [18]

For this case we have the following system of equations:

y = -2x + 4\\6x + 3y =

Rewriting equation 1 we have:

2x + y = 4

Therefore, the equivalent system is:

2x + y = 4\\6x + 3y =

The system will have no solution, if we write equation 2 as a linear combination of equation 1.

Therefore, since both lines have the same slope, they are parallel.

Parallel lines do not intersect when they have different cut points.

Therefore, there is no solution for:

-12, -4, 0, 4

The system has inifinites solutions for:

12

This is because the lines intersect at all points in the domain.

Answer:

The values, when placed in the box, would result in a system of equations with no solution are:

A: -12

B: -4

C: 0

D: 4

8 0
3 years ago
Read 2 more answers
What is the slope-intercept form of the equation of the line that passes through the points (−3, 2) and (1, 5) ?
madam [21]

Answer:

C

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 3, 2) and (x₂, y₂ ) = (1, 5)

m = \frac{5-2}{1+3} = \frac{3}{4}, thus

y = \frac{3}{4} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 3, 2), then

2 = - \frac{9}{4} + c ⇒ c = \frac{17}{4}

y = \frac{3}{4} x + \frac{17}{4} → C

4 0
3 years ago
Other questions:
  • Find the sum of 142.3, 0.572 and 47.06​
    12·2 answers
  • The temperature at noon is -4 degrees Celsius. The temperature at 6:00 pm -12 degrees Celsius. What is the difference between no
    5·1 answer
  • What is the area of this triangle h=5 in b=10 in
    12·2 answers
  • If Dana makes 18 calls in 6 hours how many how many calls does she make in 1 hour
    7·2 answers
  • A person is holding 2 bits, one is 7/16 and the other is 25/64 and wants to first drill a hole using the smallest bit. To compar
    11·2 answers
  • Please help me asap
    8·1 answer
  • WILL GIVE BRAINLIEST! HELP!
    10·1 answer
  • In Texas, 30% of parolees from prison return to prison within 3 years. Suppose 15 prisoners are released from a Texas prison on
    10·1 answer
  • 32 is the least common multiple of 8 and?
    5·2 answers
  • Can someone please tell me if I got this right or wrong? I’ll give brainliest <br> Please be honest
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!