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Harrizon [31]
3 years ago
11

The perimeter of a triangle is 7 a − 11 b . If two of its sides are 2 a + b and a − 9 b , what is the third side?

Mathematics
1 answer:
Genrish500 [490]3 years ago
8 0

Answer:

To find the missing side we need to calculate the sum of the two given sides and then subtract that from the perimeter.

7a - 11b - (2a + b + a - 9b)

= 7a - 11b - (3a - 8b)

= 7a - 3a - 11b + 8b

= 4a - 3b

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Need help on this quickly! i have 2 more questions like this that i will post if it lets me.
AfilCa [17]

Answer:

x=5 , y=12

Angle 3=140

Angle 4=100

4 0
3 years ago
What is the solution to 5/8 ÷ 3/4 ?
jenyasd209 [6]

Answer:

5/6

Step-by-step explanation:

When you divide two fractions, such as 5/8 ÷ 3/4, you flip the second fraction and then you simply multiply the numerators with each other and the denominator with each other

3 0
3 years ago
Suppose Z has a standard normal distribution with a mean of 0 and standard deviation of 1. The probability that Z is less than 1
solmaris [256]

Answer:

0.8749

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 0, \sigma = 1

The probability that Z is less than 1.15 is:

This is the pvalue of Z = 1.15, which is 0.8749.

8 0
3 years ago
Are the terms 1a and 1b like terms?
Anettt [7]
Well, they are ALIKE, but since a and b are different the terms are different. Hope this helped.
3 0
3 years ago
03.<br> (a)<br> Multiply out<br> 3(2x-7)<br> Answer
shutvik [7]

Answer: -42 is the answer.

7 0
3 years ago
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