MATHEMATICS HIGH SCHOOL

To keep her grades up madeline must earn more than 80 points on her science fair project. Let p represent the number of points she could earn.

Answers

Answer 1

Answer:

Answer:

$p > 80$

Step-by-step explanation:

Given

Points = More than 80

Required [Missing from the question]

Represent as an inequality

Let p represents the number of points.

More than means greater than i.e. >

Hence, more than 80 is represented as;

$p > 80$

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A penny a nickel a dime and a quarter are tossed. what is the probability of obtaining four tailsfour tails on the tosses?

Answers

Probability of a tail for any on coin = 1/2
As the tosses of the 4 coins are independent of each other we multyiply the probs:-
P(4 tails) = 1/2 * 1/2*1/2*1/2 = 1/16

The equation of a line is 2(y + 1) = 10x + 3. The y-intercept of the line is ______ , and the slope of the line is ______.

Answers

Answer:

The y-intercept of the line is $(1)/(2)$ , and the slope of the line is 5.

Step-by-step explanation:

The equation of a line is 2 (y + 1 ) = 10x + 3

We have to find y-intercept and slope of the given line.

We will convert this equation into the standard form of the equation of a line.

2(y+1) = 10x + 3

2y + 2 = 10x + 3

2y = 10x + 3 - 2

2y = 10x + 1

y = $(1)/(2)$ (10x + 1)

y = 5x + $(1)/(2)$

Now the slope of the line is 5 and y-intercept will be $(1)/(2)$ .

2(y+1) = 10x + 3
2y + 2 = 10x + 3
2y = 10x +1
y = 10/2x + 1/2

y = 5x + 1/2

Y-intercept is 1/2
Slope/m is 5

How to simplify the expression -(-19)?

Answers

-(-9) = 9 because the minus outside switches all the operations that are inside the parentheses.

What is the probability of rolling an odd number on a fair 6-sided number cube?

Answers

$\Omega=\{1;\ 2;\ 3;\ 4;\ 5;\ 6\}-all\ results\n|\Omega|=6\n\nA=\{1;\ 3;\ 5\}-odd\ numbers\n|A|=3\n\nP(A)=(|A|)/(|\Omega|)\to P(A)=(3)/(6)=(1)/(2)=0.5$

Answer: 0.5

If 8 men can chop down 28 trees in one day, how many trees can 20 men chop down in
one day?

Answers

The number of trees that 20 men chop down in one day will be 70.

What are ratio and proportion?

A ratio is a group of sequentially ordered numbers a and b expressed as a/b, where b is never equal to zero. When two objects are equal, a statement is said to be proportional.

If 8 men can chop down 28 trees in one day.

Let 'x' be the number of trees.

We know that the ratio of man and tree will remain constant. Then the equation is given as,

28 / 8 = 20 / x

Simplify the equation, then we have

8 / 28 = 20 / x

x = 20 (28 / 8)

x = 70

The number of trees that 20 men chop down in one day will be 70.

More about the ratio and the proportion link is given below.

brainly.com/question/14335762

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