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3 years ago

Evaluate the expression when y = 6 and x = 9 x+7y

Mathematics

1 answer:

Anon25 [30]3 years ago

8 0

Answer:

Step-by-step explanation:

y = 6

x = 9

x+7y

9 + 7(6)

9+ 42

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Equation c squared - 10 c equal 0

bagirrra123 [75]

Answer:

c = 0 or 10

Step-by-step explanation:

c² - 10c = 0

c(c - 10) = 0

c = 0 or c - 10 = 0

i.e c = 0 or 10

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3 years ago

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lianna [129]

Answer:

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3 years ago

If the complex number x = 3 + bi and |x|^2 = 13, which is a possible value of b?

olga55 [171]

If x=3+bi, then

$|x|=\sqrt{3^2+b^2}.$

You know that $|x|^2=13,$ then

$\left(\sqrt{3^2+b^2}\right)^2=13,\\ \\ 9+b^2=13,\\ \\b^2=4,\\ \\b=\pm 2.$

Two possible complex numbers satisfy these conditions:

$x_1=3+2i, \ x_2=3-2i.$

As you can see the possible value of b is 2.

Answer: correct choice is A.

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3 years ago

A mountain climber ascended 3/4 of a kilometer in 1/12 of an hour. What was the mountain climber’s ascent rate in kilometers per

drek231 [11]

<span>A mountain climber ascended 3/4 of a kilometer in 1/12 of an hour. What was the mountain climber’s ascent rate in kilometers per hour?

Correct Answer: C. 9 Kilometers per hour </span>

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3 years ago

Read 2 more answers

1. Manufacturing Process Incorporation plan to produce a new ergonomic chair. Before the company starts producing this chair the

Oduvanchick [21]

Answer:

1. cost per chair: $86.40

2. selling price per chair: $146.88

Step-by-step explanation:

1. The total cost per chair will be the sum of the cost of materials and the overhead cost (equipment, energy, labor, marketing). The cost of materials is ...

$500/(16 chairs) = $31.25/chair

So, the total cost is ...

cost of each chair = material cost + overhead cost

= $31.25 +55.15

cost of each chair = $86.40

2. We assume the markup is 70% of the cost, so will be ...

0.70 · $86.40 = $60.48

Then the selling price of the chair will be ...

selling price = cost + markup

selling price = $86.40 +60.48

selling price = $146.88

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3 years ago