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4 years ago

Simplify: |4.2 – 6.8| + (2.4 + 7.2)

Mathematics

1 answer:

SpyIntel [72]4 years ago

8 0

Answer:

$|4.2 - 6.8| + (2.4 + 7.2)$

$= | - 2.6| + 9.6$

$= 2.6 + 9.6$

$= 12.2$

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Calvin wants to earn an average grade of 90% in his Algebra class.He already has the following scores on assignments:90%,95%,85%

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Total of the 5 assignments = 90 + 95 + 85 + 80 + 97 = 447

If he wants an average of 90% for 6 assignments,
he needs a total score of 90 x 6 = 540

To achieve the average score of 90%,
he needs to score 540 - 447 for his 6th assignment.

540 - 447 = 93%

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Answer: He must score 93% for the next assignment.
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4 years ago

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3 years ago

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i need to know how to find the x and y intercepts and then graph the linear equation for the problem x+y=2

gizmo_the_mogwai [7]

Answer:

The x-intercept of the straight line is at (2,0) and the y-intercept is at (0,2).

Join those two points with a straight line and get the graph.

Step-by-step explanation:

The intercept form of a straight line equation is $\frac{x}{a} + \frac{y}{b} = 1$ , where the x-intercept of the line is at (a,0) and the y-intercept will be at (0,b).

So, we have to arrange the equation of a straight line in the intercept form and then we can easily find the x-intercept and y-intercept of the line.

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3 years ago

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3 years ago

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3 years ago

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