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3 years ago

Shelly and Steve buy prepaid phone

Mathematics

1 answer:

muminat3 years ago

5 0

Answer:

Steve

Step-by-step explanation:

steve is buying 200 minutes which is more than 150 minutes

Hope i helped :) :) :)

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7. 3x + 6x - 2 =

irina [24]

Answer:

9x -2

12 + 10x

33x-4

Hope this helps :p

5 0

3 years ago

Read 2 more answers

Rewriting expressions. Image attached

MariettaO [177]

9514 1404 393

Answer:

5z^(-5/3)

Step-by-step explanation:

The rules of exponents being used here are ...

$\sqrt[n]{a}=a^{1/n}\\\\\dfrac{a^b}{a^c}=a^{b-c}$

Using these rules on the given expression, we find ...

$\dfrac{10\sqrt[3]{z}}{2z^2}=\dfrac{10}{2}z^{1/3-2}=\boxed{5z^{-5/3}}$

7 0

3 years ago

Starting at sea level, a submarine descends at a rate of 65 meters per minute. Relative to sea level, where is the submarine 10

Stolb23 [73]

Answer:

Step-by-step explanation:

It's awfully deep.

1 minute = 65 meters

10 minutes = 10 * 65 = 650 meters below sea level.

7 0

3 years ago

Can you help me with this question?

Bond [772]

SAS, side angle side congruency

4 0

3 years ago

A cleaning company uses 10 lbs each of chemicals A, B and C for each house it cleans. After some quality complaints, the company

umka21 [38]

Answer:

25%

Step-by-step explanation:

Let us first derive an equation for the productivity.

Given

No. of houses = 1 (Assumption)

Amount of Chemicals = 30 (10 x A, B, C)

Now the formula for productivity is as follow

Productivity % (P) = (Output/Input) * 100

Assuming the current productivity is 100%. We get the value for required output but using the value of 30 (Amount of Chemicals) as Input

$100 = \frac{x}{30}*100\\ x = 30$

Since we now know the value for desired output. We replace the value of input by 40, since 10 lbs of Chemicals have been increased per house.

$Productivity(P) = \frac{30}{40}*100\\ Productivity(P) = 75$

The new Productivity is 75%

There is a reduction of 25% in productivity

8 0

3 years ago