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3 years ago

The equation c = 2000 + 3r represents the cost in dollars (C) of producing remote

Mathematics

1 answer:

ladessa [460]3 years ago

8 0

Answer:

The cost of producing 1000 remote controls is $5000.

Step-by-step explanation:

You have to substitute r = 1000 into the expressions :

$c = 2000 + 3r$

$let \: r = 1000$

$c = 2000 + 3(1000)$

$c = 2000 + 3000$

$c = 5000$

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B is the midpoint of AC. What is the length of AB? AB is 9x+7 and BC is -3x+20

ahrayia [7]

<h3>Answer:</h3>

$AB = \frac{67}{4}\\$

<h3>Step-by-step explanation:</h3>

If $B$ is the midpoint of $\overline{AC}$ then $AB$ is just half of $AC$ and also, $BC$ is just half of $AC$ . This means that $AB$ must be equal to $BC$ . Essentially, $9x +7 = -3x +20$ and we can solve for the of $x$ from that equation.

$9x +7 = -3x +20 \\ 9x +7 +3x = -3x +20 +3x \\ 12x +7 = 20 \\ 12x +7 -7 = 20 -7 \\ 12x = 13 \\ \frac{12x}{12} = \frac{13}{12} \\ x = \frac{13}{12}$

Now we can solve for $AB$

$AB = 9(\frac{13}{12}) +7 \\ AB = 3(\frac{13}{4}) +7 \\ AB = \frac{39}{4} +7 \\ AB = \frac{39}{4} +\frac{28}{4} \\ AB = \frac{67}{4}$

8 0

3 years ago

HELP!!! (the correct answer will be marked as brainliest)

Maurinko [17]

Answer:

Step-by-step explanation:

Part time workers daily rate = x.

Managers daily rate y = 3x.

4 0

3 years ago

Please help i’ll give brainliest

Brrunno [24]

Answer:

$45mm^{2}$

Step-by-step explanation:

3cm x 1.5cm

3 x 1.5 = ?

3 x 1.5 = 4.5

4.5cm = ?mm

4.5cm= 45 mm

$45mm^{2}$

Hope this helps!

4 0

3 years ago

Which number line represents the solution to -3x ≤ 6?

ivolga24 [154]

Answer:

Given inequality:

$-3x\leq6$

To represent the given inequality in number line.

We will solve the inequality to represent it in the number line.

$-3x\leq6$

Dividing both sides by $-3$

$\frac{-3x}{-3}\geq\frac{6}{-3}$ [Since we are dividing by a negative number, so the sign of inequality reverses]

$x\geq -2$

So, the solution in the number line will show all values up to infinity to the right of $-2$ including $-2$

7 0

4 years ago

What is the solution of this equation?<br> -7 + 1/3b = -6

jek_recluse [69]

Answer:

b=3

Step-by-step explanation:

-7+1/3b=-6

+7 +7

1/3b=1

*3 *3

b=3

7 0

3 years ago