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sleet_krkn [62]

3 years ago

7

For what values of a are the following expressions true? |a+5|=−5−a plz help

2 answers:

ANEK [815]3 years ago

6 0

The answer is just a=0, you have to cross out the fives

Olin [163]3 years ago

4 0

The answer is 0 "a=0"

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Solve. Find all solutions in [0,2).5 secx cotx+5 secx+ cotx+1=0

Dmitrij [34]

$\begin{gathered} 5sec(x)cot(x)+5sec(x)+cot(x)+1=0 \\ Factoring \\ (cot(x)+1)(5sec(x)+1)=0 \\ cot(x)+1=0 \\ cot(x)=-1 \\ x=cot^{-1}(1) \\ x=\frac{3\pi}{4} \\ \\ 5sec(x)+1=0 \\ 5sec(x)=-1 \\ sec(x)=\frac{-1}{5},\text{ there is no solution} \\ Hence \\ All\text{ solution are }\frac{3\pi}{4}+\pi n,\text{ where n=1,2,3...} \\ \\ \end{gathered}$

5 0

1 year ago

a woman 1.65. tall stood 50m away from the foot of a tower,and observe that the angle of elevation of the top of the tower to be

ElenaW [278]

$\sf\huge\underline{\star Solution:-}$

$\rightarrow$ Let the women's height be AE and distance between the women and tower be AC.

Also let the height of tower be BC.

$\rightarrow$ Now, clearly it is forming a triangle.

So, in triangle ABC,

$\rightarrow$ $\sf{Tan50° \:= \: \frac{BC}{AC}}$

$\rightarrow$ $\sf{1.19 \:= \: \frac{BC}{50}}$

$\rightarrow$ $\sf{1.19 ×50\:= \: BC}$

$\rightarrow$ $\sf{59.5m\:= \: BC}$

$\rightarrow$ Hence, BC = 59.5m

So, BD(total height of the tower) $\sf{ = \:BC+CD}$

$\sf{= \:59.5+1.65}$

$\sf{=\: 61.15m}$

Therefore, total height of the tower = $\sf\purple{ 61.15m.}$

________________________________

Hope it helps you:)

5 0

2 years ago

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Jeff rode his bike around a bike trail that was 1/3 of a mile long. He rode around the trail 9 times. Write a fraction greater t

Lisa [10]

Well, $\frac{1}{3} * 9 = 3$ So he rode $3$ miles, or if they want it as a fraction, it would be $\frac{9}{3}$

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3 years ago

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Is the given point interior, exterior, or on the circle (x + 2)2 + (y - 3)2 = 81?<br><br> R(6, 3)

Arte-miy333 [17]

I think it is interior

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2 years ago

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Find the midpoint of the segment with the following endpoints. (8,10) and (1, 4)

dusya [7]

Answer:

(4.5,7)

Step-by-step explanation:

Medpoint= x one + x two ÷2 , y one + y two ÷2

3 0

3 years ago