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
Anika [276]
3 years ago
8

I NEED HELP!!!

Mathematics
2 answers:
zepelin [54]3 years ago
6 0
In order to answer this one, it's really really really really helpful if you know what the law of cosines says. In fact it's absolutely necessary. The law of cosines says if you know two sides of a triangle and the angle between them then you can use that information to find the length of the third side. In the picture you know the lengths of two sides and you know the angle between them. So you can use the law of cosines to find the length of the third sidethat. That's side AC.
saveliy_v [14]3 years ago
6 0

Answer:

A) AC

Explanation :-

AC is the measurement of acute triangle ABC can you find by direct substitution of the labeled measures in the Law of Cosines

You might be interested in
If cos x=−6/7, and 90°
ankoles [38]

Answer: 0.4693877

Step-by-step explanation:

Given that:

cos x=−6/7,

From trigonometry :

Cosx + sinx = 1

Cos2x = cos(x + x)

Recall the double angle identity:

Cos2x = 2cos^2x - 1

Sin2x = 1 - 2sin^2x

Since cosx = - 6/7

Then

Cos2x = 2cos^2x - 1

Cos2x = 2cosx^2 - 1

Cos2x = 2(-6/7)^2 - 1

Cos2x = 2(36/49) - 1

Cos2x = 2 * (72/98) - 1

Cos2x = (2 * 0.7346938) - 1

Cos 2x = ( 1.4693877 - 1)

Cos2x = 0.4693877

4 0
3 years ago
I had 1 ⅔ bottle of shampoo and the I used ⅕ of a bottle to wash my dog. How much shampoo do I have left?
andreev551 [17]

Answer:

1   7/15

Step-by-step explanation:

5 0
3 years ago
Seven kilometers is how many meters​
Sergeeva-Olga [200]

Answer:

Step-by-step explanation:

Hello,

1km=1000m, right?

so 7km = 7 * 1000 m = 7000m

thanks

4 0
3 years ago
Read 2 more answers
Find the slope of the line y = 5x + 4.
avanturin [10]

Answer:

x=1/5y+−4/5

Step-by-step explanation:

Let's solve for x.

y=5x+4

Step 1: Flip the equation.

5x+4=y

Step 2: Add -4 to both sides.

5x+4+−4=y+−4/5x=y−4

Step 3: Divide both sides by 5.

5x/5=y−4/5x=1'5y+−4'5

Answer:

x=1/5y+−4/5

( I hope this was helpful) >;D

6 0
2 years ago
I need help again.lol
Monica [59]

Answer:

13\ units

Step-by-step explanation:

One is asked to find the distance between two points on a coordinate plane. The easiest way to do so is to use the distance formula, this formula is the following:

D=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2

Where ((x_1,y_1)) and ((x_2,y_2)) are the points which one needs to find the distance between. In this case, these points are as follows:

k\ (-3,5)

j\ (-8, -7)

Substitute these points into the formula and solve for the distance between these points,

D=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2

D=\sqrt{((-3)-(-8))^2+((5)-(-7))^2

Simplify,

D=\sqrt{((-3)-(-8))^2+((5)-(-7))^2

D=\sqrt{(-3+8)^2+(5+7)^2

D=\sqrt{(5)^2+(12)^2

D=\sqrt{25+144}

D=\sqrt{169}

D=13

8 0
2 years ago
Other questions:
  • Sam's eggs were ready at 8:00 A.M. If it took Sam 5 minutes to cook the eggs, when did he start cooking the eggs
    13·2 answers
  • Solve for b.
    8·2 answers
  • Read and write the number in two other forms. five hundred sixty-one thousand, thirty-eight
    10·1 answer
  • Does anyone understand this
    11·2 answers
  • <img src="https://tex.z-dn.net/?f=%20-%205x%20%2B%203y%20%3D%2051%20%5C%5C%20y%20%3D%2010x%20-%208" id="TexFormula1" title=" - 5
    10·1 answer
  • I need help with this question i will need full working out could u help?
    11·1 answer
  • If -10 is subtracted from a number, the result is 6.
    6·2 answers
  • Based on the table, what was the rate of change of the balance of the students savings account in dollars and cents per week​
    8·1 answer
  • Jerome wants to rent a car for 8 days, and he's interested in the collision damage waiver but not the loss damage waiver. If the
    10·2 answers
  • THIS DUE AT MIDNIGHT HELPPP MEEEE
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!