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Evgesh-ka [11]
2 years ago
13

Can someone help me I tried many ways but got a different answer

Mathematics
2 answers:
Likurg_2 [28]2 years ago
6 0

Answer:

v = 21

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Terms/Coefficients/Degrees

<u>Geometry</u>

  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u>Step 1: Set Up Equation</u>

2v + 3v + 75 = 180

<u>Step 2: Solve for </u><em><u>v</u></em>

  1. Combine like terms:                    5v + 75 = 180
  2. Isolate <em>v</em> term:                              5v = 105
  3. Isolate <em>v</em>:                                       v = 21
yan [13]2 years ago
4 0

Answer:

21 degrees

Step-by-step explanation:

3v + 2v + 75 = 108

3v + 2v = 5v

5v + 75 = 108

-75 -75

÷5. 105

÷5 = 21

X=21

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Mrs. Lane took a survey of the types of pants her students were wearing. She collected the data at the right. What percent of he
Nadya [2.5K]

Answer:

It is always important to go through the given problem first to get a concept of the requiremement. Then all the information's available from the question has to be noted down in such a manner that there would be no need to look at the question while solving.

Total number of students wearing jeans = 10

Total number of students wearing shorts = 9

Total number of students wearing capris = 2

Then the total number of students surveyed by Mrs Lane = (10 + 9 + 2)

                                                                                           = 21

Now percentage of students wearing shorts = (9/21) * 100

                                                                      = (3/7) * 100

                                                                      = 300/7

                                                                      = 42.85 percent

So a total percentage of 42.85% of the students were wearing shorts.

Step-by-step explanation:

6 0
3 years ago
In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther
sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1  = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0
3 years ago
OKKKKK I NEED A NEW PHONE !!! ( online school sucks)
Sonbull [250]

<em>Yea online school does suck, but when u need help, they wont give u the help u need. And also u get called on to do something when u dont want to. Have a nice day!! :)</em>

5 0
3 years ago
The product of two given numbers is 126 both of them are divisible by 3 but neither of them is 3.The larger of the two numbers i
Mice21 [21]

I believe the answer is 21

21 × 6 = 126

and both numbers are divisible by 3

4 0
2 years ago
What is the value of x in the equation 0.7x – 1.4 = –3.5
Mama L [17]
The answer is x= -3. 0.7(-3)-1.4=-3.5
5 0
3 years ago
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