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rusak2 [61]
3 years ago
7

Please help me idk yhe answer​

Mathematics
1 answer:
laila [671]3 years ago
6 0

Answer:

for the first one the answer is 1/5 2/9 and 4/14

for the second one the answers is 4/10 and 7/15

Step-by-step explanation:

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There are four cars entered into a pinewood derby race. in how many different orders can they cross the finish line, assuming th
artcher [175]

This is a problem of fundamental counting principle. In a sequence of events, the total possible number of ways all events can performed is the product of the possible number of ways each individual event can be performed. So here there is one car in each place so there 4 possible cars to get the 1st place, 3 possible car for the 2nd place, 2 possible cars for 3rd place and 1 for the 4th place. The 4x3x2x1 = 24 different order 

4 0
3 years ago
Find the slope (rate of change) for the following table
Nimfa-mama [501]

Answer:

Slope: 0.3

Step-by-step explanation:

divide 3 by 10 then you got your answer

5 0
3 years ago
Y=2x2-4x-5 if x=-2 what is y
kkurt [141]

Answer:

Step-by-step explanation:

y = 2x^2 - 4x - 5.......if x = -2

so sub in -2 for x

y = 2(-2^2) - 4(-2) - 5

   = 2(4) + 8 - 5

   =  8 + 8 - 5

   = 11 <==== y is 11

4 0
3 years ago
A car travels 83 7/10 miles on 2 1/4 gallons of fuel which is the best estimate of miles the car travels on one gallon of fuel
jeka94
To solve this problem we can use proportion, but first its nice to transform our fraction into improper fraction, so
83 \frac{7}{10}= \frac{837}{10}
and 
2 \frac{1}{4}= \frac{9}{4}
Now we can make proportion

\frac{837}{10}--------------------------\frac{9}{4} of fuel
x-----------------------------1
Now we can cross multiply

x= \frac{ \frac{837}{10} }{ \frac{9}{4} }= \frac{837}{10}* \frac{4}{9} =  \frac{3348}{90}=37.2 - its the result
6 0
4 years ago
Olga buys a 5-year increasing annuity for X. Olga will receive 2 at the end of the first month, 4 at the end of the second month
kati45 [8]

Answer:

Nominal interest rate is = 9% converible quaterly

we need to find monthy effective interest rate

0.09

i = 0.00744 or 0.75% approximately

i can also be taken as = 0.09/12

now PV of annuity will be the market price i.e x

6 60 *2 ---------------------a

Multiply equation by \frac{1}{1+i} both sides

6 60 2 PV ---------------b

Subtract equation b from a

60 2 PV (1 1+i (1+2)1 (1+2)2 (1+2)3 (1+2)60 (1+961

60 2 PV( 1 +i

on putting i = 0.00744

PV = 2733.88 approximately

X = 2733.88

Step-by-step explanation:

8 0
3 years ago
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