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Serggg [28]
3 years ago
13

PLEASE HELP ME SOLVE BOTH 30 POINTS!!!

Mathematics
1 answer:
balu736 [363]3 years ago
8 0

Answer:

1) x = 4

2) a square root cannot be equal to a negative value

Step-by-step explanation:

1) add 1 to each side

2) square each side

(√2x + 1)² = 3²

2x + 1 = 9

2x = 8

x = 4

2) subtract 4 from each side

√2x + 1 ≠ -5

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Pls answer
cluponka [151]

Answer:

8.49\ units

Step-by-step explanation:

we know that

The Pythagorean Theorem states that in a right triangle

c^2=a^2+b^2

where

c is the greater side (the hypotenuse)

a and b are the legs

In this problem

Let

c=AB ---> distance from point A to point B

a ---> the difference of the x-coordinates both points

b ---> the difference of the y-coordinates both points

so

a=1-(-5)=6\ units\\b=6-0=6\ units

substitute

AB^2=6^2+6^2

AB^2=72

AB=\sqrt{72}\ units

AB=8.49\ units

6 0
3 years ago
Yuri computes the mean and standard deviation for the sample data set 12, 14, 9, and 21. He finds the mean is 14. His steps for
Tpy6a [65]

Answer:

B. Yuri divided by n instead of n-1

Step-by-step explanation:

It was stated in the question that the dataset was sample dataset. For a sample dataset, the standard deviation is given by the formula,

σ = √ Σ (Xi - mean)²/(n - 1) where i = 1,2,3.....n

Since this is just a sample dataset and not the whole population, Yuri should have divided by n-1 instead of n.

3 0
3 years ago
I just need the answer
kogti [31]

The answer is 6 with a remainder of 1. (6 R.1)

Hope this helps!!

Please Mark Brainliest!!!

3 0
3 years ago
Ally surveyed 5 classrooms. She wanted to know the number of students in each class who love painting. The data she collected fr
melamori03 [73]

Answer:

45 im not to shur

Step-by-step explanation:

10 + 7 + 9 + 11 + 8 = ?

? = 45

8 0
2 years ago
Maximum value. F=4x+3y; x+3y<=6; x+y<=4
levacccp [35]

Answer:

6

Step-by-step explanation:

hope it helps

8 0
3 years ago
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