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3 years ago

Help please and please no links

Mathematics

1 answer:

Naddik [55]3 years ago

7 0

You answer is 152

Step by step:
Divide it into 2 rectangles
1st rectangle 10x8=80
2nd rectangle 12x6=72
80+72=152

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How do you solve these

fiasKO [112]

Answer:

Step-by-step explanation:

For number 7

You will have to distribute.

1. -5 times 2x equals -10x

2. -5 times -6 (remember negative times a negative is a positive) equals 11

so you should have -10x+11=4(x+11)

What you did to the first part on the equal sign you MUST do to the other side

3. 4 times x equals 4x

4. 4 times 11 equals 44

Now you should have -10x+11=4x+44

Now to solve:

5. 4x will now be negative 4x because you are cancelling

6. Move the -4x under the -10x(your are combining like terms)

You should have

-10x+11=44

-4x

This is equal to -14x+11=44

You are finding X so leave X where it is now. Like I said earlier you are combining like terms.

7. Now move the +11 ( now a negative 11) to the other side underneath the 44

8. Combine 44 and the -11

You should have:

-14x+=33

9. Divide the negative 14 to itself and divide negative 14 to the 33

What you do to one side you MUST do to the other side.

Your final answer is X= -33/14

For number 8

If you have ( ) these you ALWAYS have to distribute

1. 7 times 2x equals 14x

2. 7 times -4 equals to -28

You should have 13x-33=14x-28

Combine like terms

3. The negative 33 turns to a +33 and move it underneath the negative 28

You should have 13x=14x+5

4. Now subtract 14 now a negative 14x to the 13x

You will now have -x=5

5. Divide both sides by a negative 1

Your answer is X=-5

6 0

3 years ago

Ben drinks tea at an incredible rate. He drinks 3.5 loiters of tea every 2/3 of an hour. How many of liters of tea does he drink

zysi [14]

First divide 3.5 by 2 which equals 1.75. Then do 1.75*3 which equals 5.25. So he drinks 5.25 liters in one hour.

6 0

3 years ago

Read 2 more answers

Is 2 squared irrational

White raven [17]

Yes. 2 squared is irrational number because no two of the same numbers multiplied equals 2. Not including decimals either.

4 0

3 years ago

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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

What states a rule using variables.

swat32

I believe A Formula
Sorry if im wrong...

4 0

3 years ago

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