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3 years ago

What percent of 126 is 22

Mathematics

1 answer:

Anna11 [10]3 years ago

8 0

In order to solve, set up a proportion: 22/126=x/100. Cross multiply: 2200=126x. Divide by 126 on both sides: 17.46%=x

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In a survey taken of 575 justice page middle school students, 31% say mathematics is their favorite subject .how many justice pa

Serggg [28]

Hey You!

31% = 0.31 = 0.31 × 575 = 178.25

178 students like mathematics.

5 0

4 years ago

630 is divisble by which single digit numbers

Colt1911 [192]

It is divisible by the numbers: 1,2,3,4,5,6,7, and 9

3 0

3 years ago

You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your delivery process

lozanna [386]

Answer:

1.4000 ;

0.0807 ;

1.69 ;

Fail to reject the Null

Step-by-step explanation:

Given :

μ = 21 minutes

x = 22.4 minutes

Sample size, n = 36

Standard deviation, s = 6

H0: μ ≥ 21

H1: μ < 21

Test statistic : (x - μ) ÷ s/sqrt(n)

Test statistic : (22.4 - 21) ÷ 6/sqrt(36)

Test statistic : 1.4 ÷ 1

Test statistic = 1.4000

Pvalue : Using the Test statistic value at α = 0.05 ; One - tail test = 0.0807

The t critical value using a critical value calculator ; DF = (n - 1) = 36 - 1 = 35 ; α = 0.05 = 1.69

Decision region :

Reject H0 if

|Test statistic| > |critical value|

1.4 < 1.69

Hence, we fail to reject H0

There isn't enough evidence they delivery time has been reduced below previous mean

4 0

3 years ago

What is the discontinuity of the function f(x)=x^2-3x-28/x+4?

Hitman42 [59]

Answer:

Option D is correct that is (-4,-11).

Step-by-step explanation:

We have been given an expression:

$f(x)=\frac{x^2-3x-28}{x+4}$

We need to find the points of discontinuity

We will first factorize the given expression

$\frac{x^2-7x+4x-28}{x+4}$

$\Rightarrow \frac{x(x-7)+4(x-7)}{x+4}$

$\Rightarrow \frac{(x+4)(x-7)}{x+4}$

Hence, the point of discontinuity is where denominator gives value zero

So, $x+4=0\Rightarrow x=-4$

Point of discontinuity is -4

hence, after removing the point of discontinuity the function left is:

$f(x)=x-7$

Hence, put x=-4

$f(-4)=-4-7=-11$

Therefore, option D is correct that is (-4,-11).

4 0

3 years ago

Read 2 more answers

Can someone help me please will give brainliest

wolverine [178]

Answer:

see below

Step-by-step explanation:

Each point moves to half its previous distance from P. It is probably easier to count grid squares on the graph than it is to do the math on the coordinates.

If you're doing the math on the coordinates, it is convenient to use P = (0, 0), then multiply each of the coordinates of A, B, and C by 1/2. For example:

A' = (1/2)A = (1/2)(8, 4) = (4, 2)

8 0

3 years ago