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Iteru [2.4K]
3 years ago
12

Student finished 8 homework problems. If the ratio of the problems she finished to the problems she had left was 4:1 How many ho

me work problems did she have total
Mathematics
1 answer:
Readme [11.4K]3 years ago
4 0
Answer: 10 


Explanation: 

Problem finished : Problem left = 4 : 1

 4 : 1 ===> (x2) ===> 8 : 2 

Problem finished : Problem left = 8 : 2

Total homework = 8 + 2 + 10
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So it would be $38 multiplied by 33 which is: $1,254
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3 years ago
Slove the equation <br> ×+20=29
photoshop1234 [79]

Answer: x = 9

Step-by-step explanation:

x + 20 = 29

x  = 9

9 + 20 = 29

8 0
3 years ago
A researcher found a study relating the value of a car, y, to the age of the car, x. When researchers looked at the association
vredina [299]

Answer: c) About 16% of the variation in value of the car is explained by a linear relationship with the age of the car.

e) The correlation coefficient, r, is 0.397.

Step-by-step explanation:

Given that:

Coefficient of determination (r²) between two variables, age of car (x) and value of car (y) = 0.158

Correlation of determination (r²) of 0.158 = (0.158 × 100% = 15.8% of the variation between the two variables can be explained by the regression line). Hence, about 16% of the variation between age and value of car can be explained by the linear relationship.

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8 0
3 years ago
Cp ps unit 8A: Motion distance and displacement lab activity
bazaltina [42]

The difference from distance and displacement is <u>the direction</u>

<h3>Further explanation</h3>

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Can be simplified distance = total meters traveled

displacement is a vector quantity that shows changes in the position of objects in a certain interval of time. Displacement has magnitude and direction

Can be simplified displacement = distanced traveled from starting point to ending point

Some examples of distanced and displacement

1. first move: move 4 meters north

second move: move 2 meters south

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Displacement: 2 meters north

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second move: move 4 meters west

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etc

<h3>Learn more</h3>

uniformly accelerated motion

brainly.com/question/13750982

Keywords: distance and displacement lab activity

#LearnwithBrainly

8 0
3 years ago
If D is the midpoint of the segment AC and C is the midpoint of segment DB , what is the length of the segment AB , if AC = 3 cm
Juliette [100K]
<span>A midpoint divides a line or a segment into two equal parts. If D is the midpoint of the segment AC and C is the midpoint of segment DB, what is the length of the segment AB, if AC = 3 cm.</span>

 

If D is the midpoint of AC, then AD=DC

If C is the midpoint of DB, then DC=CB

If AC=3cm. then then DC-3/2=1.5

If DC=1.5 then CB is 1.5 also

AB=AC+CB

AB=3+1.5

AB=4.5

5 0
3 years ago
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