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3 years ago

Which must be present in order for factoring by grouping to apply?

Mathematics

2 answers:

Leni [432]3 years ago

8 0

Answer:

Parentheses

Step-by-step explanation:

In order to factor by grouping you need parentheses.

Natasha2012 [34]3 years ago

6 0

Answer:

is there a picture because need to see it

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The variable y varies directly with the variable x.

Ivan

Answer:

D answer to dis question is 21

3 0

3 years ago

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS

gayaneshka [121]

Answer:

( 1, -2)

step-by-step explanation:

original coordinates of C: (4, -2)

if reflected over y-axis: use the formula: (x,y) → (-x,y)

new coordinates: (-4, -2)

then if translated 5 units horizontally, there will be change in x axis:

new coordinates: (-4+5, -2) → ( 1, -2)

7 0

2 years ago

It is thought that not as many Americans buy presents to celebrate Valentine's Day anymore. A random sample of 40 Americans yiel

evablogger [386]

Answer:

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

(0.3672 , 0.7328)

Step-by-step explanation:

<u><em>Explanation:</em></u>-

Given Random sample size n =40

Sample proportion

$p = \frac{x}{n} = \frac{22}{40} = 0.55$

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(p-Z_{\alpha } \sqrt{\frac{pq}{n} } , p + Z_{\alpha } \sqrt{\frac{pq}{n} } )$

The Z-value Z₀.₉₈ = Z₀.₀₂ = 2.326

98% confidence interval of the true proportion of all Americans who celebrate Valentine's Day

$(0.55-2.326\sqrt{\frac{0.55 X0.45}{40} } , 0.55 + 2.326\sqrt{\frac{0.55 X0.45}{40} } )$

( 0.55 - 0.1828 , 0.55 + 0.1828)

(0.3672 , 0.7328)

6 0

3 years ago

Read 2 more answers

How to tell if a relation is a function and give an example.

Marianna [84]

Ex: f: R ---> R
f(x)=2x+1
Definition: For every value of x , exists only one value of f(x)
f(1)=2*1+1, f(1)=2*1+1=3
f(2)=2*2+1=4+1=5
......
f(100)=2*100+1=200+1=201

8 0

3 years ago

Find the perimeter of the triangle: To find a perimeter you must add up all of the sides. The sides are12, 10, 8

mel-nik [20]

The formula of the perimeter of a triangle is

$P=a+b+c$

where a,b,c are the sides of the triangle

$P=12+10+8=30$

7 0

1 year ago