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Jobisdone [24]
3 years ago
14

F(x) = 2x2 – 4x – 3

Mathematics
2 answers:
Elanso [62]3 years ago
7 0
Mica should have added 2 to 3 instead of 1
monitta3 years ago
3 0

Answer:

Mica should have added 2 to 3 instead of 1.

Step-by-step explanation:

f(x) = 2x^2 – 4x – 3

0 = 2x^2 – 4x – 3

Mica added 3 on boths sides and factored out 2

3 = 2(x^2 – 2x)

We have 2 outside the parenthesis , so we multiply 1 with 2  and add it one left side

3 + 1 = 2(x^2 – 2x + 1) Error in this step

The above step becomes 3 + 2 = 2(x^2 – 2x + 1)

Mica should have added 2 to 3 instead of 1.

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Solve photo question. Mathematics. Please. Easy one. And last one.
Elan Coil [88]
A collection of nickels and dimes is worth $4.40. There are 53 coins in all. How many nickels are there?

Nickel is a US coin worth 5 cents or 0.05.
Dime is a US coin worth 10 cents or 0.10

n + d = 53
0.05n + 0.10d = 4.40

n = 53 - d
0.05(53 - d) + 0.10d = 4.40  
2.65 - 0.05d + 0.10d = 4.40
0.05d = 4.40 - 2.65
0.05d = 1.75
d = 1.75 / 0.05
d = 35

n = 53 - d
n = 53 - 35
n = 18 

There are 18 nickels and 35 dimes.

0.05n + 0.10d = 4.40
0.05(18) + 0.10(35) = 4.40
0.90 + 3.5 = 4.40
4.40 = 4.40
4 0
3 years ago
Read 2 more answers
I need help on number two
SVEN [57.7K]

Answer:

2 y = 100

10 y = 20

20 y = 10

Step-by-step explanation:

To find the answer divide Y by X since y is 200 in the first and x is 1 divide 200 by the second one and you will find you answer.

8 0
3 years ago
What is 4.32 over 100 like as a fraction. what is it simplified?
xxTIMURxx [149]
\frac{4.32}{100} = \frac{432}{10000} = \frac{216}{5000} =\frac{108}{2500} = \frac{54}{1250}=\boxed{\bf{\frac{27}{625}}}
5 0
3 years ago
Read 2 more answers
If the probability of getting a particular result in an experiment is 75.3%. What is the probability of not getting that result?
loris [4]
The answer would be C.
5 0
3 years ago
There is a 25% chance that Dane will make a three-point shot during a basketball game. A random-number generator generated 10 se
Gelneren [198K]

Answer:

the 25% chance is wrong, it is actually 20%

Step-by-step explanation:

Based on the table of trials shown in the picture, it seems that the 25% chance is wrong. In the table, there are 10 trials and each one has 5 numbers generated, meaning there are a total of 50 numbers generated. Out of these 50 numbers, only 10 are the number 3. Since 3 is the only number that represents a three-point shot, that would make it a 20% (10 / 50) chance that Dane makes a three-point shot in a basketball game.

3 0
3 years ago
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