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2 years ago

3 1/3+(-2 1/4)+1 5/6

Mathematics

1 answer:

dlinn [17]2 years ago

7 0

Exact Form:
35/12
Decimal Form:
2.916
Mixed Number Form:
2 11/12

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Please help with 5 questions! THANK YOU FOR ANSWERING.

-BARSIC- [3]

1) 6x-7y=-11
2) x=-2
3) y=-4x+1
4) y-5=3(x-1)

8 0

2 years ago

The temperature inside a certain industrial machine at time t seconds after startup, for 0 < t < 10, is given by h(t) = 42

frutty [35]

Answer:

$t= \frac{125}{38} s$

Step-by-step explanation:

We are given the temperature inside the machine from startup until 10 seconds later, the formula is:

$h(t)= 42 \cdot t +1 - 4\cdot t +2 (degrees \, C)$

We want to know at what time t the temperature inside the machine will be equal to 128 °C.

So we set:

$h(t)=128$

$42\cdot t+1-4\cdot t+2=128$

Now, we rearrange the equation to keep terms with t on the left hand side and terms without t on the right hand side

$42\cdot t-4\cdot t=128-1-2$

and we simplify:

$(42-4)\cdot t= 128-2-1= 125$

$38 \cdot t = 125$

now it's easy to solve for t:

$t=\frac{125}{38}$

And thus we arrive to the solution.

5 0

2 years ago

What’s the perimeter lol

meriva

Answer:

try 47 im not sure tho ........

3 0

2 years ago

I need help plsssssssss and thank you!!!!!!

mezya [45]

Answer:

169.56

Step-by-step explanation:

The formula for finding the volume of a cylinder is: πr²h

First step: Plug in the radius and height: π•3²•6

Second step: Plug 3.14 for π: 3.14•3²•6

Third step: Simplify the equation: 3.14•9•6

Fourth step: Multiple to get your final answer: 3.14•9=28.26•6= 169.56

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2 years ago

Simplify √18. Help!!! I am on a test on ingenuity. 2√3 2√9 3√2 9√2

Stella [2.4K]

The answer is √18 = 3√2

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2 years ago