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
Vilka [71]
3 years ago
14

Multiply and simplify: 10x(9x^2 + 6x + 7)

Mathematics
1 answer:
maw [93]3 years ago
5 0
The answer is 90x^3+60x^2+70x

You might be interested in
A mixture requires 4 cups of water for every 7 cups of flour used. How many cups of water should be used with 28 cups of flour
MAVERICK [17]

Answer:

16 cups of water

5 0
3 years ago
The length of a rectangle is 8 inches more than twice its width. The area of the rectangle is 120 square inches. How many inches
Irina-Kira [14]

Answer:

L = 20 inches

Step-by-step explanation:

w = width

L = length

area = 120

W x L = 120

L - 8 = 2W  then L = 2W + 8

substitute for L:

W x (2W + 8) = 120

2W² + 8W -120 = 0

(2W - 12)(W + 10) = 0

2W-12 = 0

2W = 12

W = 6

L = 20

7 0
3 years ago
If f(x) = 3x - 1 and g(x) = x + 2, find ( f - g) (x) ?
mylen [45]

(3x-1) - (x+2) = 2x -3

8 0
3 years ago
Find the solution(s) to the system <br>y = x2-4 <br>y = -2x – 5 <br><br>​
katen-ka-za [31]

Answer:

=(-1,-5)

Step-by-step explanation:

y=X1=4

y=-2x-5-2

4 0
2 years ago
construct a 90% confidence interval of the population proportion using the giver information x=74 n=150
FrozenT [24]

Answer:

The 90% confidence interval of the population proportion is (0.43, 0.56).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population proportion <em>p</em> is:

CI=\hat p\pm z_{\alpha/2}\ \sqrt{\frac{\hat p(1-\hat p)}{n}}

The information provided is:

<em>X</em> = 74

<em>n</em> = 150

Confidence level = 90%

Compute the value of sample proportion as follows:

\hat p=\frac{X}{n}=\frac{74}{150}=0.493

Compute the critical value of <em>z</em> for 90% confidence level as follows:

z_{\alpha/2}=z_{0.10/2}=z_{0.05}=1.645

*Use a <em>z</em>-table.

Compute the 90% confidence interval of the population proportion as follows:

CI=\hat p\pm z_{\alpha/2}\ \sqrt{\frac{\hat p(1-\hat p)}{n}}

     =0.493\pm 1.645\times \sqrt{\frac{0.493(1-0.493)}{150}}\\\\=0.493\pm 0.0672\\\\=(0.4258,\ 0.5602)\\\\\approx (0.43,\ 0.56)

Thus, the 90% confidence interval of the population proportion is (0.43, 0.56).

3 0
3 years ago
Other questions:
  • Find the angle complementary to the angle 80°. A. 90° B. 180° C. 10° D. 100°
    5·2 answers
  • What is the range of the function f(x) = 4x + 9, given the domain D = {-4, -2, 0, 2}?
    9·1 answer
  • How much material is needed to construct a triangular tent that is 6 feet wide 4 feet tall and 8 feet long with side measurement
    13·1 answer
  • PLEASE HELP!!! Write the expression as a single logarithm.<br> 3 log(4) + log(7)
    6·2 answers
  • A fish was swimming LaTeX: 2\frac{1}{2}2 1 2 feet below the water's surface at 1:00 p.M. Three hours later, the fish was at a de
    8·1 answer
  • Find an equation that is equivalent to 2x+3y=6 in polar cordintates
    8·1 answer
  • Which equation could be used to find the length of the missing side of
    15·1 answer
  • If the measure of a central angle is 28°, then to find the measure of its arc, you would need to do which of the following?
    11·2 answers
  • Two trees are next to each other in a clearing. The first tree is 13 feet tall and casts an 8-foot shadow. The second tree casts
    5·1 answer
  • The following statements "If you are wearing green, you are Irish." and "If you are not Irish, you are not wearing green." are a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!