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Yuri [45]
3 years ago
5

A student has scores of 64, 62, and 72 on his first three tests. He needs an average of at least 70

Mathematics
2 answers:
Effectus [21]3 years ago
7 0

Answer:

82

62 +64+72+82=280

280 divided four(#of scores given) = 70

so 82 is the forth score if the student wants a 70 in the class

kotegsom [21]3 years ago
3 0

Answer:

73 or more

Step-by-step explanation:

You might be interested in
Which polygon has interior angles whose measures sum to 720°?
4vir4ik [10]

Answer:

Hexagon

Step-by-step explanation:

Explanation: The sum of the interior angles of a hexagon must equal 720 degrees. Because the hexagon is regular, all of the interior angles will have the same measure. A hexagon has six sides and six interior angles.

7 0
3 years ago
A manufacturing firm tests job applicants. Test scores are normally distributed with a mean of 500 and a standard deviation of 5
Blababa [14]

Answer:

The probability that the candidate score is 600 or greater

P(X≥ 600 ) = 0.0228

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given mean of the Population = 500

Given standard deviation of the Population = 50

Let 'X' be the random variable in normal distribution

Given  X = 600

Z = \frac{x-mean}{S.D} = \frac{600-500}{50} = \frac{100}{50} =2

<u><em>Step(ii)</em></u>:-

The probability that the candidate score is 600 or greater

P(X≥ 600 ) = P(z≥2)

                  = 0.5 - A(2)

                 = 0.5 -0.4772

                = 0.0228

<u><em>Final answer</em></u>:-

The probability that the candidate score is 600 or greater

P(X≥ 600 ) = 0.0228

5 0
3 years ago
Find the slope between (-2,-2) and (0,-3)
KATRIN_1 [288]

Answer:

Step-by-step explanation:

x1 y1 x2 y2

-2 -2 0 3

ΔY 5

ΔX 2

slope= 2 1/2

B= 3

Y =2.5X +3

5 0
3 years ago
Farmer Jackson is filling orders for eggs from his chickens. He has one order from Jared’s Market Store for 64 eggs, and one ord
Anettt [7]

Answer:

B. A small carton holds 6 eggs, and a large carton holds 8 eggs

3 0
2 years ago
Read 2 more answers
PLEASE HELP ME WITH THIS MATH PROBLEM!!
Leviafan [203]

Given : The Area of the Rectangle = x⁴ - 100

We know that : (a + b)(a - b) = a² - b²

⇒   x⁴ - 100 can be written as : (x²)² - (10)²

⇒   (x²)² - (10)² can be written as : (x² + 10)(x² - 10)

We know that, Area of a Rectangle is given by : Length × Width

Comparing (x² + 10)(x² - 10) with Area of the Rectangle formula, We can notice that :

⊕   Length = x² + 10

⊕   Width = x² - 10

Given : Length of the Rectangle is 20 units more than Width

⇒   Width + 20 = Length

⇒   x² - 10 + 20 = x² + 10

⇒   x² + 10 = x² + 10

<u>Answer </u>: x² - 10 represents the width of the rectangle. Because the area expression can be rewritten as (x² - 10)(x² + 10) which equals

(x² - 10)((x² - 10) + 20)

⇒   Option A

6 0
3 years ago
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