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3 years ago

Evaluate |-6| + 2|-4| - 3|6| A. -20 B. -4 C. 14

1 answer:

7 0

Hello!

First we will solve the absolute value, giving us 6+8-18. Then we combine giving us 14-18. This gives us -4.

The answer is B) -4

Hope this helped!

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Х = 7y - 22<br> Зу - х = 14<br> Need help asap

lbvjy [14]

Answer:

SUBSTITUTION METHOD:

3y - 7y - 22 = 14

-4y - 22 = 14

-4y = 14 + 22

-4y = 36

y = 36/-4

y = -9

Hope it helps!

3 0

3 years ago

a model railroad kit contains curved tracks and straight tracks . Given that 35 % of the tracks are curved , what fraction of th

Pani-rosa [81]

Since 35% of the tracks are curved, 65% of the tracks must be straight.

65% = 65/100 = 13/20

4 0

3 years ago

The rate of change in sales for Garmin from 2008 through 2013 can be modeled by

Zina [86]

Answer:

a) The model for the sales of Garmin is represented by $S(t) = -\frac{81}{2500}\cdot t^{3} + \frac{267}{250}\cdot t^{2} - 11.9\cdot t + 47.112$ .

b) The average sales of Garmin from 2008 through 2013 were $ 2.5 billion.

Step-by-step explanation:

a) The model for the sales of Garmin is obtained by integration:

$S(t) = -0.0972\int {t^{2}} \, dt + 2.136\int {t}\,dt -11.9 \int\,dt$

$S(t) = -\frac{81}{2500}\cdot t^{3} + \frac{267}{250}\cdot t^{2} - 11.9\cdot t + C$ (1)

Where $C$ is the integration constant.

If we know that $t = 9$ and $S(t) = 2.9$ , then the model for the sales of Garmin is:

$-\frac{81}{2500} \cdot 9^{3} + \frac{267}{250}\cdot 9^{2}-11.9\cdot (9) + C = 2.9$

$C = 47.112$

The model for the sales of Garmin is represented by $S(t) = -\frac{81}{2500}\cdot t^{3} + \frac{267}{250}\cdot t^{2} - 11.9\cdot t + 47.112$ .

b) The average sales of the Garmin from 2008 through 2013 ( $\bar{S}$ ) is determined by the integral form of the definition of average, this is:

$\bar{S} = \frac{1}{13 - 8} \cdot \int\limits^{13}_{8} {S(t)} \, dt$ (2)

$\bar S = \frac{1}{5}\cdot \int\limits^{13}_{8} {\left[-\frac{81}{2500}\cdot t^{3} + \frac{267}{250}\cdot t^{2}-11.9\cdot t + 47.112 \right]} \, dt$

$\bar S = \frac{1}{5}\cdot \left[-\frac{81}{10000}\cdot (13^{4}-8^{4}) +\frac{89}{250}\cdot (13^{3}-8^{3}) -\frac{119}{20}\cdot (13^{2}-8^{2}) +47.112\cdot (13-8) \right]$ $\bar{S} = \frac{1}{5}\cdot (-198.167+599.86-624.75+235.56)$

$\bar{S} = 2.5$

The average sales of Garmin from 2008 through 2013 were $ 2.5 billion.

7 0

3 years ago

the football team has a total of 25 jerseys. There are 10 meduim-sized jerseys. What percent of yhe jerseys are medium-sized jer

stiv31 [10]

Answer: There is an easy answer for any problem like this. Be careful of the wording though. For this particular question, the answer is 40%

Step-by-step explanation: The reason for this is just to divide. Divide the total, or the 100% by the number your looking for. Basically, the 25 is the whole. 10 is a percent of that whole. Divided the whole by the percent and get 0.40. Convert that to a percentage and that would be 40%. There you go.

3 0

3 years ago

Halp meh! This is Algebra 1 work.

elena55 [62]

I don't know algebra 1 sorry but i can do some pre-algebra and calculus

5 0

3 years ago