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uranmaximum [27]

2 years ago

15

The length, breadth and thickness of a brick is 18 cm, 8 cm, and 5 cm respectively. Find the area of the widest part of the bric

k. Also find the volume of the brick.

1 answer:

yulyashka [42]2 years ago

4 0

Answer:

area = 8 × 18 = 144 cm^2

volume 8×18×5 = 720cm^3

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A parabola has a minimum value of 0, a y-intercept of 4, and an axis of symmetry at x = -2

sveta [45]

Since the minimum value is 0 and axis of symmetry is -2 this means that the vertex is at -2,0 now with the y intercept of 4. You can now plug the values into Vertex form which will be y=a(x-h)^2+k. a being the shrink or stretch of the parabola, h being the x value of the vertex, and k being the y value of the vertex. with all of that plugged in it should look like y=(x+2)^2. You can check this equation by plugging in 0 as x which should find the y intercept of 4. So it should then look like y=(0+2)^2 -> y=(2)^2 -> y=4

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2 years ago

Solve the following absolute value inequality graphically: |x|-3>1.

Dovator [93]

Answer:

x < -4 ∪ x > 4

Step-by-step explanation:

The absolute value function is shifted down 3 units. The solution space is values of x where y = |x|-3 is greater than 1. The solution is shown in red in the attachments, and the left and right (dashed) sides of the inequality are shown in blue.

__

I personally prefer to rewrite the inequality so the comparison is to <em>zero</em>. That is done in the second attachment, which rewrites it to ...

|x| -4 > 0

by subtracting 1 from both sides. It is often easier to read the values of x-intercepts than it is to read the coordinate values where lines cross each other.

7 0

3 years ago

Find cot theta. (-6,-3sqrt(5)

cupoosta [38]

0 Pretend that is theta XD

cot 0 = $\frac{1}{tan0}$

Find tan 0.

tan 0 = $\frac{y}{x}$

tan 0 = $\frac{-3\sqrt{5}}{-6}$

tan 0 = $\frac{\sqrt{5}}{2}$

cot 0 = $\frac{1}{tan0}$

cot 0 = $\frac{1}{\frac{\sqrt{5} }{2} }$

Multiply 2/√5 to the numerator and the denominator (or multiply the reciprocal of the denominator to the top and bottom of the fraction)

cot 0 = $\frac{1}{\frac{\sqrt{5}}{2} } (\frac{\frac{2}{\sqrt{5}} }{\frac{2}{\sqrt{5}}} )$

cot 0 = $\frac{2}{\sqrt{5}}$

Multiply √5 to the numerator and the denominator

cot 0 = $\frac{2}{\sqrt{5}} (\frac{\sqrt{5} }{\sqrt{5} })$

cot 0 = $\frac{2\sqrt{5}}{5}$

5 0

2 years ago

say im 16 and i like a 19-year-old that's kinda friends with my brother... we don't really get to see each other much but we tex

BigorU [14]

This is hard to answer since I haven’t been through this situation, but I do recommend having a calm serious talk about your feelings, if he sees how serious and passionate you are about this, he may consider giving it a go.

I hope this was helpful, good luck

8 0

2 years ago

Read 2 more answers

Three students were applying to the same graduate school. They came from schools with different grading systems. Student GPA Sch

stiv31 [10]

Answer:

Due to the higher Z-score, Kamala had the best GPA when compared to other students at her school.

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

In this question:

Whichever student's GPA had the higher z-score had the best GPA compared to other students.

Thuy 2.5 3.2 0.8

This means that $X = 2.5, \mu = 3.2, \sigma = 0.8$

The z-score is:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{2.5 - 3.2}{0.8}$

$Z = -0.875$

Vichet 88 75 20

This means that $X = 88, \mu = 75, \sigma = 20$

The z-score is:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{88 - 75}{20}$

$Z = 0.65$

Kamala 8.9 8 0.4

This means that $X = 8.9, \mu = 8, \sigma = 0.4$

The z-score is:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{8.9 - 8}{0.4}$

$Z = 2.25$

Due to the higher Z-score, Kamala had the best GPA when compared to other students at her school.

7 0

3 years ago