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Tatiana [17]
3 years ago
9

Dwayne and Alisha both correctly graphed a standard normal curve. Which of the following statements is true? Neither the means n

or the standard deviations of Dwayne’s and Alisha’s graphs must be the same. The means of Dwayne’s and Alisha’s graphs must be the same but not the standard deviations. The standard deviations of Dwayne’s and Alisha’s graphs must be the same but not the means. Both the means and the standard deviations of Dwayne’s and Alisha’s graphs must be the same.
Mathematics
2 answers:
Nonamiya [84]3 years ago
8 0

Answer:

The last one is correct:  Both the means and the standard deviations of Dwayne’s and Alisha’s graphs must be the same.

Step-by-step explanation:

Just took the test

natta225 [31]3 years ago
7 0

Answer: Both the means and the standard deviations of Dwayne’s and Alisha’s graphs must be the same.

Step-by-step explanation:

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There are 75 students performing in the holiday concert. Of the students, 30 are boys. What percent of the students are boys?
viva [34]

Answer:

Total students = 75

Boys = 30

<h3>Percentage</h3>

\sf \frac{30}{75}  \times 100\% \\   \sf=  \frac{10}{25}  \times 100\% \\  \sf =  \boxed{ \bold{ \red{40\%}}}

Hope it helps!

8 0
3 years ago
What is the percentage difference between 50 and 45
Vinil7 [7]
45 is 90 percent of 50. / / / 50 is (111 and 1/9) percent of 45.
6 0
3 years ago
A maps key shows that every of 5 inches on the map represents 200 miles of actual distance.suppose the distance between 2 cities
Lady bird [3.3K]
200/5 = 40 miles per inch. 40x7=280 actual miles.
6 0
3 years ago
Can someone help me with these 2 questions real quick?
k0ka [10]

Answer:

<M = 32 and <Y = 103

Step-by-step explanation:

1. Since triangle BCM is congruent to triangle ZYR, we know the corresponding parts of the triangles are congruent. Therefore, <Z = <B = 45. The sum of a triangle’s angles is 180, so <M = 180 - <B - <C = 180 - 45 - 103 = 32

2. This is the exact same diagram, so we can use the information we have collected in #1. Since corresponding parts of congruent triangles are congruent, <Y must be congruent to <C, which equals 103. Therefore, <Y = 103.

I hope this helps! :)

8 0
3 years ago
Read 2 more answers
Joseph's uncle wants to put shingles on the outside walls and solar panel the roof of his barn shown at the right. It costs $2.5
sp2606 [1]

Answer:

The answer is below

Step-by-step explanation:

From the image attached, the measurement of the roof is 5 m by 9 m on  both sides. Hence:

Area of roof = 2 (5 * 9) = 90 m²

Since solar panels cost $4.00 per square meter, therefore:

Cost of solar panels = $4.00 per square meter * 90 m² = $360

The area of the front wall of the barn = (8 m * 7 m) + (1/2 * 8 m * 3 m) - (4 m * 4 m) = 52 m²

The area of the back wall of the barn = (8 m * 7 m) + (1/2 * 8 m * 3 m) = 68 m²

Area of each side wall of barn = 9 m * 7 m = 63 m²

Total area of wall = 52 m² + 68 m² + (2 * 63 m²) = 246 m²

Cost of shingles = $2.50 for each square meter * 246 m² = $615

Total cost of project = $615 + $360 = $975

5 0
3 years ago
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