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jek_recluse [69]

3 years ago

14

Trip has 15 coins worth 95 cents four coins are worth twice as much as the rest . Construct a math argument to justify the conje

cture that Trip has 11 nickels and 4 dimes.

1 answer:

taurus [48]3 years ago

4 0

11+11+11+11+11+10+10+10+10=95

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What is 2/5 +(-3/15)

Morgarella [4.7K]

Answer:

-281.25

Step-by-step explanation:

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3 years ago

Evaluate the expression when g=4 and h= 7.<br> 56<br> -9<br> h

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Step-by-step explanation:

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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

3 years ago

A circle has its center at (1,4) and a radius of 2 units what is the equation of the circle

joja [24]

Answer: x² + y² - 2x - 8y + 13 = 0

Step-by-step explanation:

the equation of the circle is in the form (x - a)² + (y - b)² = r²

where (a,b) is the center of the circle and r is the radius

hence the equation is

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3 0

3 years ago

Read 2 more answers

Which of the following expressions is equivalent to xy^3?<br> (options in the pic)

Alex

Answer:

A

Step-by-step explanation:

${xy}^{3}$

means that xy is being multiplied with itself thrice.

Hence,

$xy \times xy \times xy$

5 0

3 years ago