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Lady bird [3.3K]
3 years ago
7

What is the value of a?

Mathematics
2 answers:
Helen [10]3 years ago
7 0
25 ² - 20 ² = a
625 - 400 = 225
a = 225
a = 15
ohaa [14]3 years ago
6 0

Answer:

15

Step-by-step explanation:

a²+20²=25²

a²=625-400

a²=225

a=15

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Oneta writes an algebraic expression with three terms. The y-term has a coefficient of -3, and the x-term has a coefficient of 1
Snowcat [4.5K]

Answer:

x - 3y + z

Step-by-step explanation:

Terms are just names for objects inside the equation -- anything that isn't an operation. A coefficient the is the number a given term (variable) is being mulitpled by. In this case, -3 for y, and 1 for. x. We can deduce from this the start of the expression (x has no coeff. bc of multiplicative identity)

x - 3y

We know we are missing one term, and we also know that the third term cannot be constant, so it must be another variable. In this case I have chosen Z, in theory it shouldn't really matter but z is the best variable name in this case.

5 0
3 years ago
The data set below has a lower quartile of 13 and an upper quartile of 37.
Levart [38]

The dataset 78 is an outlier of the dataset

<h3>How to determine the true statement about the outlier?</h3>

The dataset is given as:

1, 12, 13, 15, 18, 20, 35, 37, 40, 78

Where

Q1 = 13

Q3 = 37

The boundaries of the outliers are given as:

L = Q1 - 1.5 * (Q3 - Q1)

U = Q3 + 1.5 * (Q3 - Q1)

Substitute the known values in the above equation

L = 13 - 1.5 * (37 - 13) = -23

U = 37 + 1.5 * (37 - 13) = 73

This means that the data elements outside the range -23 to 73 are outliers.

78 is outside this range

Hence, 78 is an outlier of the dataset

Read more about outliers at:

brainly.com/question/3631910

#SPJ1

7 0
2 years ago
Can someone please answer this question please answer it correctly and please show work please help me I need it
kirza4 [7]

Answer:

The answer to your question is the letter A.

Step-by-step explanation:

a) - c < 0     This option is correct c > 0 but -c < 0 or 7 > 0 and -7 < 0

b) c < -a      This option is incorrect. 7 > - (-4)  or 7 > 4

c) c < - b     This option is incorrect. 7 > - 1

Conclusion

The right answer is the first choice because is the only that satisfies the inequality.

5 0
3 years ago
Ivan rented a truck for one day. There was a base fee of $17.99 , and there was an additional charge of 73 cents for each mile d
NISA [10]
Ivan drove 167 miles
6 0
3 years ago
Weight is simply the force of gravity acting on an object. TRUE or FALSE
Digiron [165]
The answer is true. .........
3 0
3 years ago
Read 2 more answers
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