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3 years ago

I have to write the following expression in simplest form 7p-1-9p+5

1 answer:

8 0

The simplest way of writing this:
7p−1−9p+5=7p+−1+−9p+5Combine Like Terms:=7p+−1+−9p+5=(7p+−9p)+(−1+5)=−2p+4Answer:=−2p+4

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The perimeter of this figure is 70 feet. How long are the unknown sides?

navik [9.2K]

The correct answer is 6 feet.

7 0

3 years ago

Read 2 more answers

What is the equivalent of pi over 6 radians in degrees?

ra1l [238]

To find the answer to this problem, you can use the unit circle to see that pi over 6 radians is equal to 30°

Another way is to use the equation: degrees = radians • (180 over pi)

In this example, plugging in the radians portion of the equation gives us: degrees = (pi over 6) • (180 over pi), which will become degrees = (180pi over 6pi)

Simplify and pi cancels out to give us degrees = 30

Answer: 30°

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3 years ago

A student scored 75 and 97 on her first two quizzes. Write and solve a compound inequality to find the possible values for a thi

Rainbow [258]

Answer:

$85 \le \frac{75 + 97 + n}{3} \le 90$ ; $83 \le n \le 98$

Step-by-step explanation:

Score of the first two quizzes: 75 and 97

Let n represent the third score

Average score would be: $\frac{75 + 97 + n}{3}$ .

Given that the average score fall between 85 and 90, this can be represented by the compound inequality as shown below:

$85 \le \frac{75 + 97 + n}{3} \le 90$

Solve for n in each statement that makes up the compound inequality:

$85 \le \frac{75 + 97 + n}{3}$

$85 \le \frac{172 + n}{3}$

Multiply both sides by 3

$85*3 \le 172 + n$

$255 \le 172 + n$

Subtract 172 from each side of the inequality

$255 - 172 \le n$

$83 \le n$

Also,

$\frac{75 + 97 + n}{3} \le 90$

$\frac{172 + n}{3} \le 90$

Multiply both sides by 3

$172 + n \le 90*3$

$172 + n \le 270$

Subtract 172 from both sides of the inequality

$n \le 270 - 172$

$n \le 98$

Combining both together, the possible values of her third quiz score would be:

$83 \le n \le 98$

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2 years ago

Laney and Maka are tutors. Laney charges $10 for travel expenses plus $32 per hour of tutoring. The dollar amount Maka charges c

dezoksy [38]

Answer: Total amount earned by Laney in 4hour=$138

Total amount earned by Maka in 4hours=$134

Difference =$4

Step-by-step explanation:

Since

Maka charges can be modeled by the equation F=30h+14,

where h =number of hours that Maka tutors

F = the total amount earned. Following same model

With 14 being the charge in dollar for travel expenses.

Laney charging $10 for travel expenses plus $32 per hour of tutoring can also be represented as

F= 32h +10

Such that total amount earned by

Maka in 4hours gives

F=30h+14

F=30x4 +14

F=120+14=$134

In the same vein the total amount earned by Laney in 4hours gives

F=32h+10

F= 32x4+10

F=128+10=$138

The difference in money earned by Laney and Maka = $138-$134= $4

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3 years ago

Renna pushes the elevator button, but the elevator does not move. The mass limit for the elevator is

earnstyle [38]

Answer:

Whats the full question ?

Step-by-step explanation:

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3 years ago