1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anygoal [31]
2 years ago
8

A line a slope of 4 and includes the points (-5,7) and (w-9). What is the value of w?

Mathematics
1 answer:
kolezko [41]2 years ago
7 0

Answer:

The value of w is -9.

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-9-7)/(w-(-5))

m=-16/(w+5)

-16/(w+5)=4

w+5=-16/4

w+5=-4

w=-4-5

w=-9

You might be interested in
PLSS HELP ILL GIVE BRAINLIEST IF YOU HELP ME AND EXPLAIN UR ANSWER
kherson [118]

Answer:

It is the second choice.

Step-by-step explanation:

Divide both side by pi r squared. Boom.

3 0
2 years ago
Read 2 more answers
Find the distance between the points ( – 7, – 6) and (1,9). If necessary, round your answer to the nearest tenth.
Kay [80]
The distance would be 17.

all you need to do is plug the points into the distance formula.
7 0
1 year ago
Find the value of x.
posledela

Answer:

<u>x = 50°</u>

Step-by-step explanation:

2x = 140 - 40

2x = 100

x = 100/2

<u>x = 50°</u>

8 0
2 years ago
Read 2 more answers
HELPPPPPPP asap<br> Condense each expression.<br> show work
Karolina [17]

Answer:

No question?

Step-by-step explanation:

6 0
2 years ago
i have been trying to solve this compound and double angle question please help me find the answer to these question guys​
natali 33 [55]

Answer:

These type of questions are super tricky b/c you have to remember all the different versions of the identities, and then they put the question in some odd form,  I feel like this should land math professors in jail , for dishonesty , b/c it's really a form of "how tricky can I make a question and still have a way to solve it"   anyway,

Step-by-step explanation:

a)

next the question asks   1-cos 2A   and this is total abuse of notation.   the way this should be written is   1- cos( 2A)  so we know that the A is part of the cosine functions input... btw.. in any computer program,  it would never ever let you get away with that top form of the expression.  :/   anyway... I keep ranting.. huh... sorry  :P

1-cos(2A) is an odd form of the identity  1/2(1-cos(2A) = sin^{2}(A)  the 1/2 is missing but we can add that pretty easy, we just have to remember to take it out too. I usually forget to do that. and my professor marks me off completely,  totally wrong, but I just miss one small thing  :/  anyway....

our 1-cos(2A) needs the 1/2 added to it.  or if we move that 1/2 to the other side it looks like  2*sin^{2}(A)  = 1-cos(2A)  and this is that "odd" from of the identity that I was talking about.  

next let's deal with sin(2A)  it has an identity of  2 sin(A)cos(A) which is really nice for us b/c it will cancel out the 2 in then numerator for us, nice !

now our fraction looks like  [2* sin^{2}(A)] / 2 sin(A)cos(A)

so cancel out one of the sines

2*sin(A) / 2 cos(A)

cancel the 2s

Sin(A) / Cos(A) = Tan(A)

nice  it worked out  :P

b)

by the above that we just worked out, then

Tan(15) = Sin(15) / Cos(15)

I had to look up what sin of 15 is b/c it's not one of those special angles but it does have an exact form of

Sin(15) = (√3 - 1) / 2√2

Cos(A) = (√3 + 1) / 2√2

you can use rule of Cos(A-B) = Cos(A)Cos(B)+Sin(A)Sin(B) to get the above and a similar rule for Sin(A-B)

back to our problem,  the 2√2 will cancel out

then we have

Tan(15) =  (√3 - 1) /(√3 + 1)

in the form that is above that's exact, the roots could be approximated but i'll just leave that in the form that is exact.  Most math professors like that form.  

 

4 0
2 years ago
Other questions:
  • First year of high school heh need a little help​
    12·1 answer
  • Josiah purchased three cheeseburgers for 1.59$ each and two milkshakes for 3.25$ each. If sales tax is 7.25%, what is the total
    15·1 answer
  • SHOW YOUR WORK and ill give brainlest :)
    9·1 answer
  • Benny has 102 basketball cards. Jesse has 909 basketball cards.How much more does Jesse have than Benny?
    13·2 answers
  • I need help????????????????????
    10·2 answers
  • 19!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Write an equation of the line that passes through (0, −2) and (4, 10).
    10·1 answer
  • Which box plot represents a set of data that has the greatest mean absolute deviation? (see attached image)
    14·2 answers
  • Please help me need help ASAP thanks
    5·1 answer
  • How does the concept of trust relate to debt?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!