2 years ago

Question 19 (4 points)

Mathematics

2 answers:

wolverine [178]2 years ago

8 0

He made the first error in number 3

kogti [31]2 years ago

5 0

The error he made was number 3

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Estimate 3/8 + 3/4 + 7/8 =

goldfiish [28.3K]

Answer:

Step-by-step explanation:

3/8+3/4+7/8

=3/8+6/8+7/8

=16/8

8 0

2 years ago

Solve the system of linear equations by graphing. y = –5/2 x – 7 x + 2y = 4 What is the solution to the system of linear equatio

Anestetic [448]

Keywords

system; linear equations; graphing; solution

we have

$y=-\frac{5}{2}x-7$ -------> equation A

$x+2y=4$

$x=4-2y$ ----> equation B

The system of linear equations is composed of equation A and equation B

Substitute the equation B in equation A

$y=-\frac{5}{2}[4-2y]-7$

$y=-10+5y-7$

$4y=17$

$y=17/4=4.25$

Find the value of x

$x=4-2[17/4]=-4.5$

The solution is the point $(-4.5,4.25)$

Using a graphing tool

see the attached figure

therefore

the answer is the option A

$(-4.5,4.25)$

4 0

3 years ago

Read 2 more answers

In the year 2002, the world population was estimated at 6 billion people. Based on research from the World Bank, about 20% lived

olga_2 [115]

In the given question all the information's are provided based on which the answer to the question can be easily deduced. It is already given that the population of the world in the year 2002 was estimated to about 6 billion. Among them 20% of the people lived on an an income of less that $1 per day.Firstly let us convert 6 billion from words to numbers.
6 billion = 6000000000
Now
Number of people earning less that $1 per day = (20/100) * 6000000000
= 6000000000/5
= 1200000000
So the number of people earning less than $1 per day is 1200000000

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3 years ago

7th grade math i mark as brainliest

mamaluj [8]

The answer is 45.5. The image explains why.