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3 years ago

Simplify. (-√7)(-√7)

Mathematics

1 answer:

Savatey [412]3 years ago

5 0

Answer:

7

Step-by-step explanation:

(-√7)(-√7)

$(-\sqrt{7})^2$

$(\sqrt{7})^2$

7

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Please help Chose of the problems a or b Thank you!!

Strike441 [17]

Answer:

a. x = 13m, b. x = 12cm

Step-by-step explanation:

a. x² = 12² + 5² (Pyth. theorem)

x = 13 m

b. 15² = 9² + x² (Pyth. theorem)

x = 12 cm

5 0

3 years ago

Read 2 more answers

Mara carried water bottles to the field to share with her team at halftime. The water bottles weighed a total of 60x^2 + 48x + 2

VLD [36.1K]

Answer:

$b)\: 12(5x^2+4x+2)$

Step-by-step explanation:

The given expression for water bottles is

$60x^2+48x+24$ .

The highest common factor of all the terms of this expression is $12$ .

We now factor to obtain;

$12(5x^2+4x+2)$

Hence the the factorization that represents the number of water bottles and the weight of each bottle is the one in option B.

The correct answer is B

We therefore factor to obtain,

3 0

3 years ago

Translate the sentence into an inequality.

Vadim26 [7]

Answer:

9(n + 22) ≤ -15

Step-by-step explanation:

9 times the sum of a number and 22 is at most −15

Let n = number

Times = multiplication

Sum = Addition

9 * n + 22

We must add parenthesis on the end on 22 and before n

We must do this because it says 9 times the sum of a number and 22 which means that 9 is being multiplied by both n and 22

We would have 9(n + 22)

9(n + 22) is at most -15

At most meaning that -15 is the highest number that 9(n + 22) can equal

Because it says at most 9(n + 22) can equal -15 or anything less than -15

So at most can be replaced with ≤

9(n + 22) ≤ -15

4 0

3 years ago

You own a motel and have a pricing structure that encourages rentals of rooms in groups.

zheka24 [161]

Answer:

$41

Step-by-step explanation:

One room rents for $68,
Two rooms for $65 each,
In general, the group rate per room is found by taking $3 off the base of $68 for each extra room.

So,

$a_1=\$68\\ \\a_2=\$65\\ \\a_3=\$62\\ \\...$

where $a_n$ is the rate per nth room rented.

This is an arithmetic sequence, so

$a_n=a_1+(n-1)\cdot d$

In your case,

$a_1=68\\ \\n=10\\ \\d=-3$

Hence

$a_{10}=68+(10-1)\cdot (-3)=68-9\cdot 3=68-27=41$

This means if a group rents 10 rooms, the charge per room is $41.

5 0

3 years ago

3.5 inches divided by 24.5 inches

aliina [53]

Your Answer Is approximately 0.143

6 0

4 years ago

Read 2 more answers