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
Papessa [141]
2 years ago
12

Geometry pls help

Mathematics
1 answer:
IRINA_888 [86]2 years ago
8 0

Answer:

Hi,can you please answer mine too I really need the answer because I have to pass it later at 10 pm and it's already 9:24pm it's just 2 questions 17-18:(

Directions: Simplify the following monomials (if possible).

17.) Subtract 9a from -15a

18.) From -9cd², subtract -2cd²

I hope you can help me:(

Step-by-step explanation:

about your question I'll just put it in the comment section:)

You might be interested in
The total amount of spending per​ year, in​ billions, on pets in a certain country x years after 2000 is given by the following
Kamila [148]

Answer:

40.4502 billion dollars

51.3432 billion dollars

Step-by-step explanation:

Given :

Total amount spent in billions in pets x years after year, 2000 ;

P(x)=2.1786x + 25.2

Amount spent in 2007 ;

x = 2007 - 2000 = 7 years

Put x = 7 in the equation :

P(7)=2.1786(7) + 25.2 = 40.4502

Amount spent in 2012 :

x = 2012 - 2000 = 12 years

Put x = 12 in the equation :

P(12) = 2.1786(12) + 25.2 = 51.3432

The amount spent in billik dollars on pets in :

2007 = $404502 billion

2012 = $51.3432 billion

8 0
3 years ago
The concentration of particles in a suspension is 50 per mL. A 5 mL volume of the suspension is withdrawn. a. What is the probab
kolezko [41]

Answer:

(a) 0.6579

(b) 0.2961

(c) 0.3108

(d) 240

Step-by-step explanation:

The random variable <em>X</em> can be defined as the number of particles in a suspension.

The concentration of particles in a suspension is 50 per ml.

Then in 5 mL volume of the suspension the number of particles will be,

5 × 50 = 250.

The random variable <em>X</em> thus follows a Poisson distribution with parameter, <em>λ</em> = 250.

The Poisson distribution with parameter λ, can be approximated by the Normal distribution, when λ is large say λ > 10.  

The mean of the approximated distribution of X is:

μ = λ  = 250

The standard deviation of the approximated distribution of X is:

σ = √λ  = √250 = 15.8114

Thus, X\sim N(250, 250)

(a)

Compute the probability that the number of particles withdrawn will be between 235 and 265 as follows:

P(235

                             =P(-0.95

Thus, the value of P (235 < <em>X</em> < 265) = 0.6579.

(b)

Compute the probability that the average number of particles per mL in the withdrawn sample is between 48 and 52 as follows:

P(48

                             =P(-0.28

Thus, the value of P(48.

(c)

A 10 mL sample is withdrawn.

Compute the probability that the average number of particles per mL in the withdrawn sample is between 48 and 52 as follows:

P(48

                             =P(-0.40

Thus, the value of P(48.

(d)

Let the sample size be <em>n</em>.

P(48

                             0.95=P(-z

The value of <em>z</em> for this probability is,

<em>z</em> = 1.96

Compute the value of <em>n</em> as follows:

z=\frac{\bar X-\mu}{\sigma/\sqrt{n}}\\\\1.96=\frac{48-50}{15.8114/\sqrt{n}}\\\\n=[\frac{1.96\times 15.8114}{48-50}]^{2}\\\\n=240.1004\\\\n\approx 241

Thus, the sample selected must be of size 240.

5 0
3 years ago
Which ordered pair is a solution of the system 3x+y=-3 and y=x+5?
Vesna [10]

Answer:

The correct answer is C. (-2,3)

Step-by-step explanation:

Hope this helps :)

7 0
2 years ago
What is a fraction equivalent to -6/1 ?
jek_recluse [69]

Answer:

Fractions are equivalent if their simplest forms are the same. So, to make equivalent fractions, all you have to do is multiply the top number (the numerator) and the bottom number (the denominator) by the same number—and it can be any number, as long as you use the same one for both the top and bottom.

Step-by-step explanation:

Fractions are equivalent if their simplest forms are the same. So, to make equivalent fractions, all you have to do is multiply the top number (the numerator) and the bottom number (the denominator) by the same number—and it can be any number, as long as you use the same one for both the top and bottom.

3 0
3 years ago
Read 2 more answers
A book contains 120 pages and each page 35 lines how many pages will the book contains if every page has 24 lines
hichkok12 [17]

Answer:

If there will be 24 lines on all pages, there will be 175 pages in the book

Step-by-step explanation:

First we have to find out how much lines does the book have in total, so we multiply the number of pages by the number of lines on the page. So we get.....

120 x 35 = 4200

Now in order to find out how much pages will the book have when a page will have 14 lines we divide the number of lines by 24 and we get......

4200 / 24 = 175

7 0
3 years ago
Other questions:
  • What does the front, side, and top views of a triangular pyramid look like?
    5·1 answer
  • How does the y-intercept appear in these three representations: table,equation,and graph?
    12·2 answers
  • Two angles are complementary. their difference is 14 degrees. find the angles.
    8·1 answer
  • Suppose $200 is invested at the annual interest rate 6% compounded continuously what is the amount in the account after years ?
    14·1 answer
  • What is an equation of the line with slope 3 that goes through point (-1/2, 5/2)?
    11·1 answer
  • A pentagonal prism is cut by a plane perpendicular to the base. What is the shape of the cross section that is formed?
    11·1 answer
  • Which expression is equivalent to -6 - ( -2 )<br><br> PLEASE HELP MEEE
    10·1 answer
  • Which table shows a function that is decreasing only over the interval (–1, 1)?
    15·2 answers
  • Please help! :) What is the value of Fraction 1 over 2x3 + 3.4y when x = 3 and y = 4?
    5·1 answer
  • Someone please answer this, I’ll give you brainliest and 50 points!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!