2 years ago

Please help, the brainiest will go to the one with a good answer.

Mathematics

1 answer:

Mashutka [201]2 years ago

3 0

Option c is your answer 3xy + 7x4

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A regular hexagon has an apothem of 2 and a side length of 4 /3/3 its area is

Ne4ueva [31]

A hexagon can be considered to be 6 triangles with a common vertex.
Area of 1 of the triangle = 1/2 * 2 * side length

Area of whole hexagon is 6 times this.

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3 years ago

Kid need help with homework 2 (8+×)=22

Masja [62]

X=3
$22 \div 2 = 11$
$8 + 3 = 11$

Step By Step:

find x

8 + ? • 2 = 22

22 ÷ 2 = 11

There for x = 3

8 + 3 = 11.

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3 years ago

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son4ous [18]

9514 1404 393

Answer:

5 cm

Step-by-step explanation:

The kite is symmetrical about the long axis, so the height of each of the triangles is half the overall width of the kite. (10 cm/2 = 5 cm)

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2 years ago

The scores on a psychology exam were normally distributed with a mean of 57

olya-2409 [2.1K]

Answer:

Cutoff for a failing score is 49 and 2.28% students failed.

Step-by-step explanation:

We have been given that scores on a psychology exam were normally distributed with a mean of 57 and a standard deviation of 4.

2 standard deviation below mean would be,

$57-2(4) =57-8= 49$

Therefore,Cutoff far a failing score is 49.

Now let us find out the z-score for our given values,

$z=\frac{x-\mu}{\sigma}$

$z=\frac{49-57}{4}=\frac{-8}{4} =-2$

Now let us look up the probability from normal distribution table.

$P(z$

Therefore, percentage of students failed is 2.28%.

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3 years ago