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3 years ago

A) What is the equation of line A b) What is the equation of line B

Mathematics

1 answer:

dsp733 years ago

7 0

Answer:

the equation of line a is y = 4

The equation of line b is x=8

Step-by-step explanation:

Line A -is a horizontal line with no slope - for every value of x no matter what x is - y= 4

Line B has an infinite slope because it is vertical

For every value of y - no matter what y you choose x= 8 So the equation of the line is x=8

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A surveyor wishes to determine the height of a mountain. At a given position he measures the angle of elevation to the top as 43

Usimov [2.4K]

Answer:

4,486.93 ft

Step-by-step explanation:

Let 'h' be the height of the mountain and 'x' be the horizontal distance between the first position measured and the top of the mountain.

Two right triangles can be modeled such that their tangent relationships yield:

$tan(43.66) = \frac{h}{x}\\tan(38.2) = \frac{h}{x+1000}$

Solving the linear system:

$x= \frac{h}{tan(43.66)}\\x = \frac{h}{tan(38.2)} -1000\\\frac{h}{tan(43.66)}=\frac{h}{tan(38.2)} -1000\\1000 = 0.222869*h\\h=4,486.93\ ft$

The mountain is 4,486.93 ft high.

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3 years ago

What is the ninth term in A(n)=-4 - 6(n-1)?

Ghella [55]

Answer:

A(9) = -52

Step-by-step explanation:

The given sequence is :

A(n)=-4 -6(n-1)

We need to find the 9th term of the above sequence.

To find it, put n = 9 in the above sequence.

A(9) = -4 -6(9-1)

= -4-6(8)

= -4-48

= -52

Hence, the 9th term of the sequence is -52.

8 0

3 years ago

If bob earns 35,000 a month how much does he earn in 2 years and 75 weeks

nlexa [21]

Okay, do 35,000x24=840,000
840,000/104=8,077
8077x75=605,769
605,769+840,000=1,445,769.23
:-)

6 0

3 years ago

Read 2 more answers

Answer quick please i will mark brainliest:

SOVA2 [1]

Look at the attached picture

Hope it will help you....

Good luck on your assignment

8 0

2 years ago

How do you solve this equation: -2m+3=|15+m|

Elden [556K]

Any number inside the modulus sign becomes positive. This means $|15+m|=|-(15+m)|=|-15-m|$ and so we have,

$-2m+3=|15+m| \Rightarrow \left \Big\{ {{-2m+3=15+m} \atop{-2m+3=-15-m}} \right$

Solving these gives us

$-2m+3=15+m \Rightarrow m=-4$

$-2m+3=-15-m \Rightarrow = m=18$

However if we check the second solution in the original equation we obtain $-2(18)+3=|15+18| \Rightarrow -33=33$ . This is false and so $m=18$ can't be a solution.

Therefore the only solution is $m=-4$ .

(Note: I'm not sure why the second solution didn't work but when there's a modulus sign involved it always pays to check your final answers to be sure. I'll have a think about it but in case you find out before I do, I'd be interested to know in the comments.)

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3 years ago