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storchak [24]
3 years ago
15

Find the value of this expression if x = -1 and y = 9. x²y -7

Mathematics
1 answer:
Zarrin [17]3 years ago
5 0

Answer:

-9/7

Step-by-step explanation:

Simplify and remove like terms.

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wlad13 [49]
A negative number is a number that isn’t going down and a positive is a number that is going up on a number scale
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3 years ago
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The admission fee for a charity event is $7 for children and $10 for adults. The event was attended by 700 people, and the total
maria [59]
If all were children, revenue would be 700*$7 = $4900. Revenue is actually $6400 -4900 = $1500 more than that. Each adult admission that replaces a child's admission adds $10 -7 = $3 to the revenue, so there must have been
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3 years ago
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A small forest fire is cited due north of a fire lookout tower on Pikes Peak. From a second tower located 12.6 miles due west of
Brums [2.3K]

Answer:

10.76 miles

Step-by-step explanation:

<em>The following figure can be drawn from the information given.</em>

<em>We have to find the adjacent side which is between the given angle and 90 degrees.</em>

<em>Tan formula will be applied</em>

Tan (anlge) = opposite/adjacent

Opposite = 12.6

Angle = 49.5°

Adjacent = x

Tan (49.5°) = 12.6/x

x = 10.76 miles

Therefore, the fire is 10.76 miles away from the tower Pikes Peak.

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5 0
3 years ago
The measure of three angles of a triangle are in the ratio 4:5:6, find the measure of each
Yuri [45]

Answer:

4n+5n+6n=180

4+5+6=15n

180/15=12

4×12=48

5×12=60

6×12=72

4 0
3 years ago
A survey of 100 high school students provided this frequency table on how to show students to get to school
pychu [463]

Answer:

4/10

Step-by-step explanation:

40 students drive

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40/100 = 4/10

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3 years ago
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