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astraxan [27]
3 years ago
14

What's the answer Or I need some help

Mathematics
2 answers:
Yuliya22 [10]3 years ago
5 0
All you need to do is find a common denominator 

5/1 = 25/5
2/5

25/5 - 2/5 = 23/5

turn into mixed number

4 3/5 is your answer
Pani-rosa [81]3 years ago
3 0
The answer is is 4 and 3/5
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Find 4 x f(x) if f(x)=-3x-8
VLD [36.1K]
Replace f(x) in the equation with what it equals:

4 \times (-3x - 8)

Distribute 4 to each term in parentheses:

4 \times -3x = -12x
4 \times -8 = -32

-12x - 32

The answer is C.


7 0
3 years ago
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
What is the image point of (2,4) after a translation left 4 units and down 1 unit? hat is the image point of (0,1) after a trans
denis-greek [22]

Want me to help

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please post an provide Simplify 5p^2\5p^3
Rom4ik [11]
( p - 3) or (2p + 1)
5 0
3 years ago
Betty had 1 1/4 hours to finish a test. She was nervous and it took her 1/2 an hour to calm down. How much time did she have lef
Airida [17]

Answer:

Betty had 45 minutes to take her test in mixed number form it is

Step-by-step explanation:

1 hour

1/4 an hour = 15 minutes

1/2 an hour is 30 minutes

1 hr 15- 30= 45

45= 3/4 of and hour remaining to test

5 0
2 years ago
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