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2 years ago

6

Evaluate the function y = x² - 4; x = -5

1 answer:

sveta [45]2 years ago

6 0

Answer: y= 21

Step-by-step explanation: Hope this helps Have a brilliant day- Lily ^_^

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What is the value of (-7+3i)+(2-6i)? A)-9+9i B)-5+9i C) -9-3i D) -5-3i

Delicious77 [7]

Answer:

D

Step-by-step explanation:

Add real numbers and add imaginary numbers

(-7 + 3i)+(2 - 6i) = -7 + 2 + 3i - 6i

= - 5 - 3i

4 0

2 years ago

Read 2 more answers

At the base of a pyramid, a surveyor determines that the angle of elevation to the top is °. At a point meters from the base, th

riadik2000 [5.3K]

Answer:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

Step-by-step explanation:

Incomplete question:

<em></em> $\angle CBD = 53^\circ$ <em></em>

<em></em> $\angle CAB = 35^\circ$ <em></em>

<em></em> $AB = 75$ <em></em>

<em></em>

<em>See attachment for complete question</em>

Required

Determine the equation to find x

First, is to complete the angles of the triangle (ABC and ACB)

$\angle ABC + \angle CBD = 180$ --- angle on a straight line

$\angle ABC + 53= 180$

Collect like terms

$\angle ABC =- 53+ 180$

$\angle ABC =127^\circ$

$\angle ABC + \angle ACB + \angle CAB = 180$ --- angles in a triangle

$\angle ACB + 127 + 35 = 180$

Collect like terms

$\angle ACB =- 127 - 35 + 180$

$\angle ACB =18$

Apply sine rule

$\frac{\sin A}{a} = \frac{\sin B}{b}$

In this case:

$\frac{\sin ACB}{AB} = \frac{\sin CAB}{x}$

This gives:

$\frac{(\sin 18^\circ)}{75} = \frac{(\sin 35^\circ)}{x}$

4 0

2 years ago

Read 2 more answers

Help please, and explain(step-by-step) how the answer would be correct.

vekshin1

When a function is reflected, it must be reflected over a line

The new function is: $y = |4 -x| -8$

The equation is given as:

$y = |x + 4| - 8$

The rule of reflection over the y-axis is:

$(x,y) \to (-x,y)$

So, we have:

$y = |-x + 4| -8$

Rewrite as:

$y = |4 -x| -8$

Hence, the new function is:

$y = |4 -x| -8$

Read more about reflections at:

brainly.com/question/938117

8 0

2 years ago

Find the value of the unknown number in the proportion 17/80=p/100

rjkz [21]

17/80 = p/100

p = 17/80 * 100

p = 0.2125 * 100

p = 21.25

8 0

3 years ago

(a+b)^2 hihhhhhhhhhhhhhhhhhhhh

OverLord2011 [107]

Answer:

a^2 + 2ab + b^2

Answered by Gauthmath

3 0

2 years ago

Read 2 more answers