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Inessa [10]
4 years ago
11

Please help for solve this question

Mathematics
1 answer:
Schach [20]4 years ago
5 0
You set up the problem correctly, just keep going.

Expand out your expression:

2x(3x-9) + 4x(x+13)
= 6x^2 -18x + 4x^2 + 52x 
= 10x^2 +34x

Remember that the above expression is the area, so it is equal to 24.

10x^2 + 34x = 24
10x^2 + 34x - 24 = 0     (divide by 2)
5x^2 + 17x - 12 = 0

Done.
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if the sum of 5 consecutive positive numbers is w, in terms of w, what is an equation to represent this?
Cerrena [4.2K]
W=a+b+c+d+e would be your answer to the questions
8 0
3 years ago
What is the answer to<br> -2a-9=6a+15
timurjin [86]

Answer:

a=-3

Step-by-step explanation:

-2a-9=6a+15

Add 9 to both sides:

-2a-9+9=6a+15+9

-2a=6a+24

Subtract 6a from both sides:

-2a-6a=6a+24-6a

-8a=24

Divide both sides by -8:

\frac{-8a}{-8}=\frac{24}{-8}

a=-3

4 0
3 years ago
Read 2 more answers
What are the smallest and largest possible numbers in base 3?
adelina 88 [10]

Our number system is in base 10.  The ones place holds digits 0 - 9.  When you reach 10, you must add another place value (the tens place).

Base 3 is digits 0-2 becasue when you reach 3, you need to add another place value.

Therefore, the smallest number is 0 and the largest number is 2.

Answer: smallest = 0, largest = 2

3 0
4 years ago
Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certific
Ulleksa [173]

Answer:

Marcus score is 13.7, the mean is 12.89, and the standard deviation is 1.95, so I’ll do ( 13.7 – 12.89)/ 1.95, Since Marcus' z-score is 0.415. The area to the left of the z-score is 65.9% so therefore Marcus did scored better than 65.9% of the students. So Marcus needs to score 98% better of all the other students in order for him to receive an actual certificate.

Step-by-step explanation:

4 0
3 years ago
Please that (b).​​ I'm having some difficulties.​​
nata0808 [166]

Here's the answer.

Hope it helps u.

:)

7 0
4 years ago
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