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Katarina [22]
2 years ago
9

How do the expressions 8+k2−6 and 8(k+2)−4k compare when k = 7?

Mathematics
1 answer:
Andreas93 [3]2 years ago
8 0

Answer:

8+k2-6>8(k+2)-4k

Step-by-step explanation:

8+7×2-6 and 8(7+2)-4×7

8+14-16 and (56+16)-28

6 and 44

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3 of 3
Ad libitum [116K]

Answer:

Results are below.

Step-by-step explanation:

Giving the following information:

iTones charges $10 per month, and $1 per song.

Music Mine charges $7 per month and $1.50 per song.

<u>To calculate the total cost for each option, we need to use the following formulas:</u>

iTones:

Total cost= 10 + 1x

x= number of songs

Music Mine:

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4 0
3 years ago
1.) The island shown has a population of 12,175 people. Find the population
miv72 [106K]

Answer:

Population density = 148.22\ \text{people per square kilometer}

Step-by-step explanation:

The attached figure shows the dimension of an island.

Population density is equal to total population per unit land area.

Firstly we will find the area of the triangle using Pythagoras theorem as follows :

H^2=B^2+P^2

H is Hypotenuse, B is base and P is perpendicular

B=\sqrt{H^2-P^2} \\\\B=\sqrt{(18.5)^2-(11.1)^2} \\\\B=14.8\ km

Area of triangle is given by :

A=\dfrac{1}{2}\times b\times P\\\\A=\dfrac{1}{2}\times 14.8\times 11.1\\\\A=82.14\ km^2

\text{Population density}=\dfrac{\text{Total population}}{\text{land area}}\\\\=\dfrac{12175 }{82.14}\\\\=148.22\ \text{people per square kilometer}

Hence, the population density is 148.22\ \text{people per square kilometer}.

7 0
2 years ago
At the craft store, Tara bought 12 yards of fabric to make tote bags. Each bag requires 1.25 yards of fabric. If Tara makes 5 to
matrenka [14]

Answer:

5.75 yds left

Step-by-step explanation:

1.25 yds per bag*5 bags =6.25 yds used

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She has 5.75 yds left

5 0
2 years ago
What times what is 216
ElenaW [278]
2 times 108 is 216
3 times 72 is 216
4 times 54 is 216 
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7 0
3 years ago
Which statement belongs in Step 4?
Gala2k [10]

Answer:

Step-by-step explanation:

TQ = QR

Ray t bisects TR. TR is divided into  two equal parts

3 0
3 years ago
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