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sweet [91]
2 years ago
14

Russells previous test scores are 70,74,87,85 what score does he need to get an average of 80

Mathematics
2 answers:
s344n2d4d5 [400]2 years ago
8 0
70+74+87+85 = 316
For the 5th test score, an 80 average needs 400 as the total score.  So 400-316 = 84 on the next test.
Ludmilka [50]2 years ago
3 0

Answer:

84 is the score that you Russell needs on the next test to achieve an average of at least 80.

Step-by-step explanation:

Russell's test scores are:  70,74,87 and 85

Average of the test scores = A = 80

Let thescore needed to achieve an average of 80 be x

Average = \frac{\text{Sum of terms}}{\text{Number of terms}}

A=\frac{70+74+87+85+x}{5}

80=\frac{70+74+87+85+x}{5}

70+74+87+85+x=400

x=400-(70+74+87+85)=84

84 is the score that you Russell needs on the next test to achieve an average of at least 80.

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polet [3.4K]

The ounces of snack mix that Grayson made during the family camping is 41.87 ounces.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Grayson added 14.52 ounces of peanuts to 27.35 ounces of granola.

Amount of snack mix = 14.52 ounces + 27.35 ounces = 41.87 ounces.

The ounces of snack mix that Grayson made during the family camping is 41.87 ounces.

Find out more on equation at: brainly.com/question/2972832

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1 year ago
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2 years ago
22-(x+8)=9x-6 helppp
viktelen [127]
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3 years ago
What is the equation of a line parallel to the x-axis that passes though the point (4,5)? What is the slope of this line
Svetlanka [38]

Slope of a line parallel to the x -axis is 0

y = 5 is the required equation of a line parallel to the x-axis that passes though the point (4,5)

<h3><u>Solution:</u></h3>

Given that  a line parallel to the x-axis that passes though the point (4,5)

To find: slope of this line and equation of a line

The x -axis is a horizontal line with the equation y = 0 There are an infinite number of lines that are parallel to the x -axis, y = 0

All horizontal lines have slope of 0

If lines are parallel then they have the same slope. The slope of a line parallel to the x -axis is 0

The equation of a straight line parallel to x-axis at a distance b from it is y = b

Here "b" is the y - co-ordinate value

Here given point is (4, 5) so b = 5

The required equation is y = 5

<h3><u>Method 2:</u></h3>

We know slope "m" = 0

Given point is (4, 5)

<em><u>The slope intercept form is given as:</u></em>

y = mx + b --- eqn 1

Where "m" is the slope of line and "b" is the y - intercept

Substituting m = 0 and (x, y) = (4, 5)

5 = 0(4) + b

b = 5

Substitute b = 5  and m = 0 in eqn 1

y = 0 + 5

y = 5 is the required equation of a line parallel to the x-axis that passes though the point (4,5)

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2 years ago
4(x - 3) = 1/2x + 2 what is the answer
olga55 [171]

Answer:

x=4

Step-by-step explanation:

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