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
soldier1979 [14.2K]
2 years ago
9

Which expression is equivalent to 420d2 - 126d?

Mathematics
1 answer:
tatiyna2 years ago
7 0

Answer:

42d(10d-3)

Step-by-step explanation:

You might be interested in
Different hotels in a certain area are randomly selected, and their ratings and prices were obtained online. Using technology, w
Savatey [412]

Answer:

a. y= 130x + 350 + \epsilon

b. The symbol y-bar represents the average price of hotels in the area

Step-by-step explanation:

a. The regression line equation is given by:

y=\alpha x + \beta + \epsilon

Where Alpha represents the slope, Beta represents the intercept with the Y axis, and epsilon represents the random component of the model. Thus,

\alpha = 130 y \beta = 350  Obtaining:

y= 130x + 350 + \epsilon.

b.  In a simple linear regression model the value of y-bar represents the average of all values ​​of y observed. Thus, since y represents the prices of the hotels, then y-bar is the average price of hotels in the area.

5 0
2 years ago
(5+w)(w+4) in standard form
dlinn [17]

Answer:

  w² +9w +20

Step-by-step explanation:

Multiply it out, collect terms, and write as descending powers of w.

  (5+w)(w+4) = 5w +5·4 +w² +w·4

  = w² +9w +20

7 0
2 years ago
Ask Your Teacher Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified
Igoryamba

Answer:

V=15.44

Step-by-step explanation:

We have a formula

V=\int^{π/3}_{-π/3} A(x) dx ,

where A(x) calculate as  cross sectional.

We have:

Inner radius: 5 + sec(x) - 5= sec(x)  

Outer radius: 7 - 5=2, we get

A(x)=π 2²- π· sec²(x)

A(x)=π(4-sec²(x))

Therefore, we calculate the volume V, and we get

V=\int^{π/3}_{-π/3} A(x) dx

V=\int^{π/3}_{-π/3} π(4-sec²(x)) dx

V=[ π(4x-tan(x)]^{π/3}_{-π/3}

V=π·(8π/3-2√3)

V=15.44

We use a site geogebra.org to plot the graph.

5 0
3 years ago
Is square root of 7 a rational number
MAVERICK [17]

Answer: Yeah its a rational number.

5 0
2 years ago
Aeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Kobotan [32]

Answer:

oooooooffff

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • Tim wants to boil rice on the stove. He needs to use exactly three gallons of water in a pot to boil the rice. Which method shou
    12·1 answer
  • What is the length of arc ZV?<br><br> π inches
    12·1 answer
  • What is the circumference of a circle with an area of 16π in²
    6·1 answer
  • A stadium brings in 16.25 million per year. It pays football related expenses of 13.5 million and stadium expenses of 2.7 millio
    5·1 answer
  • How many different pairs of parallel edges are there on a rectangular solid?
    12·1 answer
  • Please Help Me. Add (2x^2+4−x^3)+(−4x^2+6x^3−2) Express the answer in standard form. Enter your answer in the box.
    10·1 answer
  • Tamiko got a check for 109.60 and a small bonus check for 34.15.What is the net result of her transactions using the result from
    15·1 answer
  • How many times is 5 x 10e 6 larger than 5 x 10e4 ?
    11·1 answer
  • .. / .... .- - . / -.-- --- ..- / -.- -.-- ...<br> :)))&lt;3<br><br> discord is kayleelol#6666
    14·2 answers
  • Show that (1 + 2V3)2 = 13 +4V3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!