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
Rom4ik [11]
3 years ago
13

What's -3a(5a-7) ? I can't figure It out .

Mathematics
2 answers:
DochEvi [55]3 years ago
6 0
I think maybe -15 but I’m not sure
steposvetlana [31]3 years ago
3 0
It is - 15 a ^ 2 + 21 a.
You use distributive property
You might be interested in
A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 Chevrolet Cavalier shows that the mean
iogann1982 [59]

Answer:

0.1469

Step-by-step explanation:

Given from the question;

Mean=8.4 hrs=μ

Standard deviation=1.8 hrs=δ

Sample size, n=40

Let  x=8.7

z=(x-μ)÷(δ÷√n)  

Find z(8.7)

z=(8.7-8.4)÷(1.8÷√40)

z={0.3×√40}÷1.8=1.05409

z=1.0541

Read from the  standard normal probabilities table

P(z>1.0541)

=0.1459

3 0
3 years ago
I will give brainliest:)
Scorpion4ik [409]
The difference starts off by 7. Then it continues to double. Then the answer is 14, 28, 42. The answer doubles every time.
5 0
3 years ago
Draw a histogram for the intervals 17-19, 20-22, 23-25, and 26-28 using the following data: 19, 19, 27, 20, 27, 26, 25, 26, 18,
snow_lady [41]

Intervals are given to us

19, 19, 27, 20, 27, 26, 25, 26, 18, 27, 20, 24, 19, 21, 27, 23, 21, 17, 22, 22

From the given data we need to create a frequency table

From 17 - 19 there are 5 numbers. they are 19,19,19, 18, 17

From 20 -22 there are 6 numbers . they are 20, 20, 21, 21, 22, 22

From 23 - 25 there are 3 numbers. they are 23, 24, 25

From 26 to 28 there are 6 numbers . they are 27, 27, 26, 26, 27, 27

Histogram is attached below

4 0
3 years ago
Read 2 more answers
Please help I don’t get it
Dmitry [639]

Answer:

ur  mom isugly as stiuff

Step-by-step explanation:

vut like u

6 0
3 years ago
Please show the steps for this question <br> Divide z4 by z-3
dsp73
Z^4 / z^-3 = z^7  - when you divide numbers written in exponential form, you keep the base and subtract the exponents.  z^4 divided by z^-3 = z^ (4- (-3)) = z^7.
8 0
3 years ago
Other questions:
  • Nick won a $1,000 lottery prize. He can't decide what he should spend the money on. For some time now, he has been planning to b
    5·1 answer
  • What are the possible numbers of positive, negative, and complex zeros of f(x)=x^6-x^5-x^4+4x^3-12x^2+12?
    9·1 answer
  • If point B has coordinates (−8, 1), what are the coordinates of the point when it is reflected across the y-axis and then rotate
    15·1 answer
  • it cost $270 for 3 people to go on a fishing trip how much does it cost for 10 people to go on a fishing trip
    14·2 answers
  • Show (2.3)(5.06) as a fraction multiplication problem
    15·2 answers
  • Im never using brainly ever again the answers are wrong so here is you question
    11·2 answers
  • Write an equation in point-slope form that goes through the points (0, 0) and (2, 3)
    12·1 answer
  • In the diagram below, AB is parallel to CD. What is the value of x?
    5·2 answers
  • A concert charges $24.50 per daily adult ticket and $13.75 per child’s ticket. A group of 90 people paid $1560.00 for tickets. W
    8·1 answer
  • 6 grade math problem
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!