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Rina8888 [55]
4 years ago
8

Will mark as Brainliest if you answer! I need the answer tonight thank you in advance!

Mathematics
1 answer:
Alenkasestr [34]4 years ago
3 0

Answer:

y = 4x + 7

x = 4y + 7

x - 7 = 4y

\frac{x-7}{4} = y

f⁻¹(x) = \frac{x-7}{4}

Step-by-step explanation:

To find the inverse function, switch the variables and solve for y:

y = 4x + 7

x = 4y + 7

subtract 7:

x - 7 = 4y

divide by 4:

\frac{x-7}{4} = y

write as a function:

f⁻¹(x) = \frac{x-7}{4}

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3х2 = 147<br> Solve by undoing
Dmitry_Shevchenko [17]

Answer: +/- 7

Step-by-step explanation:

3x² = 147

To solve for x divide through by three first.

3x² = 147

x² = 49, now we take the square root of both side by trying to apply laws of indices.

√x² = √49

The square root will neutralize the effect of the square because

√a = a¹/² so (x²)¹/², and (x²)¹/² =

x²×¹/² = x, therefore the solution is

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3 0
4 years ago
This problem has been solved!
rjkz [21]

Answer:

1. Precise

2.Both

3.Precise

5.Neither

Step-by-step explanation:

Accuracy is the closeness of a measured value to a standard value.

Precision is the closeness of two or more measurements to each other.

1.The norm is 45 sit-ups in a minute.The students did, 64, 69,65 and 67. Values are not accurate compared to standard value 45.

Values are precise

Answer--Precise

2. Average score is 89.5

  Scores are 89,93,91,87

  Values are precise i.e a difference of 2 from each score

  Values are accurate because the average score is 90 thus compared to      the known average score of 89.5 they are accurate.

Answer-Both

3. Yesterday temperature=89

   Tomorrow=88

    Next day=90

   Average =75

   Values are precise i.e. difference of ± 1°

   Values are not accurate compared to the average temperatures of 75 F

   Answer---Precise

5. The jar contained 568 pennies

   The 6 people guessed the numbers as

    735,209,390,300,1005, 689

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  Answer---Neither

5 0
3 years ago
To make 16 cookies, you will need <br> cups of sugar.
lys-0071 [83]
There is lack of information so this question cannot be answered until there is more information. Sorry but put all of the information in the question you ask next time.
5 0
4 years ago
HELP PLEASE!!!!!
Furkat [3]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Please help me with 3-10.
VARVARA [1.3K]
6)
4x + 36

7)
2x + 10

8)
-6x + 12

9
8x + 0 = 8x
0 = 8x - 8x
0= 0
6 0
3 years ago
Read 2 more answers
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