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Elis [28]
3 years ago
5

Multiply (2x+9) (x+3)

Mathematics
2 answers:
postnew [5]3 years ago
7 0
Here you distrubute the two equations

2x*x=2x^2
2x*3=6x
9*x=9x
9*3=27

Then we add all these answers together for the total
2x^2+6x+9x+27 (combine like terms)
2x^2+15x+27 in the final answer

Hope this helps
svlad2 [7]3 years ago
3 0
Theres this method I use called the box method.

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A research article reports the results of a new drug test. The drug is to be used to decrease vision loss in people with Macular
Brilliant_brown [7]

Answer:

A. Valid

Step-by-step explanation:

The P-value is the probability of getting this result or sample statistic if the null  hypothesis is true. That is why a low P-value (smaller than the significance level) is considered evidence to reject the null hypothesis, because the result has little probability of being due to chance.

The statement that the P-value is "the probability of getting results as extreme as or more extreme than the ones in this study if the drug is actually not effective" is valid, as the null hypothesis states generally the opposite of the objective of the study (demonstrate that the drug is effective), and the very low value of the P-value is indicative that this result, if the drug was not effective, has a very low probability.

7 0
3 years ago
Pls help:Find all the missing elements:
Yuliya22 [10]

Answer:

<h3>B = 48.7° , C = 61.3° , b = 12</h3>

Step-by-step explanation:

In order to find B we must first angle C

To find angle C we use the sine rule

That's

\frac{ |a|  }{ \sin(A) }  =  \frac{ |c| }{ \sin(C) }

From the question

a = 15

A = 70°

c = 14

So we have

\frac{15}{ \sin(70) }  =  \frac{14}{ \sin(C) }

\sin(C)  =  \frac{14 \sin(7 0 ) }{15}

C = \sin^{ - 1} (  \frac{14 \sin(70) }{15} )

C = 61.288

<h3>C = 61.3° to the nearest tenth</h3>

Since we've found C we can use it to find B.

Angles in a triangle add up to 180°

To find B add A and C and subtract it from 180°

That's

A + B + C = 180

B = 180 - A - C

B = 180 - 70 - 61.3

<h3>B = 48.7° to the nearest tenth</h3>

To find b we can use the sine rule

That's

\frac{ |a| }{ \sin(A) }  =  \frac{ |a| }{ \sin(B) }

\frac{15}{ \sin(70) }  =  \frac{ |b| }{ \sin(48.7) }

|b|  =  \frac{15 \sin(48.7) }{ \sin(70) }

b = 11.9921

<h3>b = 12.0 to the nearest tenth</h3>

Hope this helps you

6 0
3 years ago
you buy a new video game for $60 the sales tax is eight what is the total cost for the game including sales tax
aev [14]

The answer is 8percent is 64.8 dollars hope this helps you thank you so much have a great day

6 0
3 years ago
Convert 65,000,000 to scientific notation.
uranmaximum [27]
6.5x10^7
count the decimal places over, with the first being zero
7 0
3 years ago
Read 2 more answers
The sum of their speeds is 180 miles per hour superman is 20mph faster than Desperado how fast is each roller coaster
madreJ [45]

Superman is 100 mph

Desperado is 80 mph

there total speed is 180 mph and Superman is 20 mph faster

8 0
3 years ago
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