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3 years ago

What is the value of x/5 +3y exponent 2 -z if x =30, y=2 and z=-2

Mathematics

1 answer:

jekas [21]3 years ago

3 0

X/5 when x=30 is 30/5 which is 6

3y^2 when y=2 is 3(2)^2 which is 3(4) which is 12

And z=-2... if we plug these into the original question we get 6+12-(-2)

The negatives cancel and it becomes 6+12+2 which =20

Your answer is 20

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This seems easy but i’m not sure how to do it, anyone know the answer

Pie

The correct answer is C. 4π / 3
Hope this helps!

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3 years ago

Anita invested $6000, some at 5% and the rest at 6%. If the yearly income is $337.50, what is the amount invested at each rate?

Pepsi [2]

Let the amount invested with 5% interest be x

Therefore, the amount invested with 6% interest will be (6000-x)

It is given that the total interest earned yearly is $337.5. Thus, the equation of interest will be:

$\frac{5}{100}x+\frac{6}{100}(6000-x)=337.5$

Multiplying both sides by 100 we get:

$5x+6(6000-x)=33750$

$5x+36000-6x=33750$

Subtracting both sides by 36000 we get:

$-x=-2250$

$\therefore x=2250$

Thus, the amount invested at 5% is $2250

Therefore, the amount invested at 6% will be $(6000-2250)=$3750

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3 years ago

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ki77a [65]

Answer:

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6 0

3 years ago

I really need help please

Arturiano [62]

This is true. you don't need to provide a counterexample

6 0

3 years ago

4. He drove at Puerto Princesa City to Taytay at an average speed of 40 kph

dexar [7]

Step-by-step explanation:

Distance = Speed x Time

Given Distance = 40km/h or kph

Time = 5 hours 15 minutes

$5 \frac{15}{60} \\ = 5 \frac{1}{4} \\ = 5.25hours$

Distance Travelled = 40 kph x 5.25 hours

= 210km

7 0

3 years ago