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3 years ago

??? Need help thanks

Mathematics

2 answers:

Rina8888 [55]3 years ago

6 0

The correct answer is B

yarga [219]3 years ago

5 0

For each hour she works, her earning goes up $12.

When time(hours) = 1, The point's amount earned (y) is at $12.

When time(x) = 2, the point's amount earned (y) is at $24.

etc.

hope this helps

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A multiple-choice standard test contains total of 25 questions, each with four answers. Assume that a student just guesses on ea

weqwewe [10]

Answer:

a) 8*88*10⁻⁶ ( 0.00088 %)

b) 0.2137 (21.37%)

Step-by-step explanation:

if the test contains 25 questions and each questions is independent of the others, then the random variable X= answer "x" questions correctly , has a binomial probability distribution. Then

P(X=x)= n!/((n-x)!*x!)*p^x*(1-p)^(n-x)

where

n= total number of questions= 25

p= probability of getting a question right = 1/4

then

a) P(x=n) = p^n = (1/4)²⁵ = 8*88*10⁻⁶ ( 0.00088 %)

b) P(x<5)= F(5)

where F(x) is the cumulative binomial probability distribution- Then from tables

P(x<5)= F(5)= 0.2137 (21.37%)

7 0

3 years ago

How many solutions does the system of equations below have?

galben [10]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The measures of two complementary angles are m< 1 = 162 - 9 and m<2 = 4z - 1. Find m<2.

Novay_Z [31]

Answer:

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5 0

2 years ago

I am really lost I need help

jeka57 [31]

#3 is 2/4
#6 is 3/4
#10 is true
#4 is 4225
and those are the only ones I know
Hope I helped a little bit

4 0

2 years ago

Read 2 more answers

Here's a question ~

Gre4nikov [31]

Answer:

(0, 5√3/2 + 2)

Step-by-step explanation:

Given is the absolute value function.

Observations:

It has a slope of ±√3 and the y- intercept of 2.
There is no horizontal shift, so the the y-axis is the line of symmetry.
The y-axis is also an angle bisector of the two lines.
The foot P₁P₂ is parallel to the x-axis since it's perpendicular to the y- axis.

We need to find the coordinates of intersection of the line P₁P₂ with the y- axis (the point Y in the picture).

Consider the triangle AYP₂.

We know AP₂ = 5.

The angle YAP₂ is:

arctan (1/√3) = 30°

The distance AY is:

AY = AP₂ cos 30° = 5*√3/2

The distance from the x-axis to the point Y is:

5√3/2 + 2, added the y- intercept of the graphed lines

The coordinates of the point Y:

(0, 5√3/2 + 2)

3 0

3 years ago