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2 years ago

Help?? ASAPpppppppppppp

Mathematics

2 answers:

umka21 [38]2 years ago

8 0

Answer:

Step-by-step explanation:

you find slope (y1-y2)/(x1-x2) = (0-1)/(4-5) = -1/-1= 1

then you take a point (4,0)

y-0 = 1(x-4)

I hope this helps!

Marta_Voda [28]2 years ago

7 0

Answer:

y = x - 4

Step-by-step explanation:

The equation is just y = x shifted down 4 units, so it's y = x - 4. If you have to use all of the symbols, you can write "y = x * 1 - 4 + 0". Otherwise, use the one under "Answer" as it is shorter

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Four a plus 2 c plus c =

Bumek [7]

Answer:

Step-by-step explanation:

4a+3c

8 0

4 years ago

Read 2 more answers

The half life of silicone-32 is 710 years. If 30 grams is present now, how much will be present in 300 years?

Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

$N(t)=N_0(\frac{1}{2})^{\frac{t}{t_{1/2}}$

where,

$N(t)$ = quantity of the substance remaining

$N_0$ = initial quantity of the substance

$t$ = time elapsed

$t_{1/2}$ = half life of the substance

From the information given we know:

The initial quantity of silicone-32 is 30 g.
The time elapsed is 300 years.
The half life of silicone-32 is 710 years.

So, to find the quantity of silicone-32 remaining we apply the above equation

$N(t)=30\left(\frac{1}{2}\right)^{\frac{300}{710}}=30\left(\frac{1}{2}\right)^{\frac{30}{71}}\approx22.38 \:g$

22.38 g of silicone-32 will be present in 300 years.

7 0

3 years ago

Ariel's garden is planted in the shape of a square and has an area of 81 square feet. If she plans to put a fence around the per

zaharov [31]

9x9=81
so there is 9 on 2 sides, which is 18 when it gets added together. DONT FORGET ABOUT THE OTHER 2 SIDES!! you have four sides of the square so 9x4=36. I believe the answer is actually 36

7 0

3 years ago

Read 2 more answers

Is -56 greater than 36

postnew [5]

No it’s less than because it’s negative

5 0

3 years ago

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The sprocket on the crankshaft of an engine power the camshaft by a chain assembly. If the engine crankshaft is turning 3250 rev

Lera25 [3.4K]

Answer:

30,631 inches
2553 feet

Step-by-step explanation:

The length of one revolution of the sprocket is ...

C = 2πr = 2π(1.5 in) = 3π in

Then the length of 3250 revolutions is ...

3250(3π in) = 30,630.53 in

About 30,631 inches of chain travel past the sprocket in one minute.

There are 12 inches in a foot, so the number of feet is ...

30,630.53 in/(12 in/ft) = 2552.54 ft

About 2553 feet of chain travel past in one minute.

8 0

3 years ago