Mathematics High School

In triangle ABC, AB= 10cm, AC=9cm and angle B=60 degrees. Let BC=x cm. Use cosine rule to show that x is a solution of x^2-10x+19=0

Answers

Answer 1

Answer:

Step-by-step explanation:

In Triangle ABC, AB= 10cm, AC=9cm And Angle B=60 Degrees. Let BC=x Cm. Use Cosine Rule To Show That X

Related Questions

I could use some help on this one! Thanks!

Answers

458
the answer is the last one

Answer:

A.) 458  R2

4 5 8

9 | 4 1 2 4

3 6  

5 2

4 5

7 4

7 2

2

458 with a remainder of 2

Anybody know the answer to this?

Answers

Use distributive property first
12g = 8g - 12 + 11
12g = 8g - 1
4g = -1
Divide by 4
g = -1/4


Viral Marketing
An organization is trying to decide between three sets of assumptions for their viral
marketing campaign:
• Send the message to 20 people, and assume that each person will take 1 day to share
the message with 3 other, new people (and each of them will share with 3 new
people, and so on).
• Send the message to 5 people, and assume that each person will take 1 day to share
the message with 6 other, new people and each of them will share with 6 new
people, and so on),
• Broadcast the message by paying for a television commercial that reaches 100,000
people, but can't be shared easily.
For which scenario would the most people see the message by the 6th day that the
organization sent it?

Answers

Answer:

...

Step-by-step explanation:

A car is traveling at a steady speed. It travels 2 1/2 miles in 3 1/3 minutes. How far will it travel in 45 minutes ?

Answers

Answer: The car will travel 30 2/3 miles in 45 minutes.

Answer:

Please Mark as Brainliest!!

Step-by-step explanation:

The car will travel 30 2/3 miles in 45 minutes.

The car will travel 40 miles in 1 hour

Evaluate y(5- (6-z) )
if y= 4 z= -6

Answers

Answer: -27

Step-by-step explanation:

Y(5-(6-z))
4(5-(6-(-6))
4( 5-12) = 4(-7) = -28

What is the length of x in the diagram below?

A triangle with vertical bisector forms 2 triangles with a right angle. One triangle has a side length of 5 and another angle with a measure 45 degrees. Another triangle has a hypotenuse with length x and another angle with measure 30 degrees.
StartFraction 5 Over StartRoot 3 EndRoot
StartFraction 10 Over StartRoot 3 EndRoot EndFraction
5 StartRoot 3 EndRoot
10

Answers

Answer:

That is a 45-45-90 triangle next to a 30-60-90 triangle.  

So, the height of the left triangle equals 5.

That makes the short side of the 30-60-90 triangle also equal to 5.

In a 30-60-90 triangle, the hypotenuse (or "x") is exactly twice the length of the shortest side.

Therefore, the hypotenuse (or "x") equals 10.

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

edge 2020

4x+3−2x=15
what is x?

Answers

Answer:

2

Step-by-step explanation:

4x+3-2x = 15

6x = 15-3

6x = 12

x = 12/6

X = 2

hope it helpful ✌️✌️

i got the answer of x = 6

need help btw i am in middle school

Answers

Answer:2

Step-by-step explanation:HEY PLS DON'T JOIN THE ZOOM CALL OF A PERSON WHO'S ID IS 825 338 1513 (I'M NOT SAYING THE PASSWORD) HE IS A CHILD PREDATOR AND A PERV. HE HAS LOTS OF ACCOUNTS ON BRAINLY BUT HIS ZOOM NAME IS MYSTERIOUS MEN. HE ASKS FOR GIRLS TO SHOW THEIR BODIES AND -------- PLEASE REPORT HIM IF YOU SEE A QUESTION LIKE THAT. WE NEED TO TAKE HIM DOWN!!! PLS COPY AND PASTE THIS TO OTHER COMMENT SECTIONS!! YOU CAN ALSO PUT IT AS A QUESTION< THIS IS NOT A JOKE THIS IS SOMETHING VERY SEROUIS AND DANGEROUS AND SHOULD BE TAKEN VERY SEROUISLY


For a craft project, Jackie spent 45 minutes beading, 10 minutes painting, and 25
minutes sewing.
How much time did she spend working on her project?

Answers

Answer:

1 hour and 20 minutes

Step-by-step explanation:

45+25+10=80 minutes which equal 1 hour and 20 minutes

the smallest number that divides by 8 10 and 12( please answer fast i have exams in 1 hr​

Answers

Answer:

120

Step-by-step explanation:

Time (econds)
8. The table shows a person's annual
salary y (in thousands of dollars) after x
years of education beyond high school.
What is the annual salary,
Years of
of the person after Education Salas
8 years of education
beyond high school?
Annual

Answers

Answer:

76 the pattern goes in 12s every two years

Step-by-step explanation:

64 plus 12 is 76

2x+4y=8 find the slope

Answers

Make it y = mx + b form
4y = -2x + 8
Divide by 4
Y = -1/2x + 8
The slope is -1/2
M= -1/2 I think that’s the ANS

Need help
Hurry!!!!!!!!

Answers

Answer:

sorry

Step-by-step explanation:

Answer: thats soo ez just do it

Step-by-step explanation:

The lengths of adjacent sides of a rectangle are 572 units and 8,2
units. The perimeter is 5/2+8/2 +5,2 +8/2.
What is the simplified perimeter, in units, of the rectangle?

Answers

Answer:

13 units

Step-by-step explanation:

Giveb that :

Perimeter = 5/2 + 8/2 + 5/2 + 8/2

Hence, sum of the perimeter will be ;

The L. C. M of the denominator = 2

(5 + 8 + 5 + 8) / 2

= 26 / 2

= 13 units

Hence, the perimeter of the rectangle is 13 units

what is 1 times 3 divided by 3 + 25 minus 3 times 100 minus 93 + 4

Answers

Answer:

2211

Step-by-step explanation:

1*3 = 3

3/3 = 1

1+25 = 26

26-3 = 23

23*100 = 2300

2300-93 = 2207

2207+4 = 2211

Calculate the area

a.25.12 cm2

b.12.56 cm2

c.50.24 cm2

Answers

Answer:

a. 25.12 cm^2

Step-by-step explanation:

Area = π * r^2

a = π * 4^2

a = π * 8

a = 25.12

Hakim Ellison wants to buy a 4 door sport utility vehicle 4 wheel drive hybrid. There is an 8% sales tax on the purchase price of the SUV in his state. If he pays the full sticker price for the SUV, how much is the total?

Answers

Answer: $60401.16

Step-by-step explanation:

From the attached image, the total price for the vehicle = $55,927.

If he were to pay the full sticker price for the SUV, the total would sum up to

= $55,927 + 8% sales tax

= $55,927 + 8/100( $55,927)

= $55,927 + 0.08($55,927)

= $55,927 + $4474.16

= $60401.16

The total would sum up to $60401.16


A miniature portrait of Frosty the Snowman is square and has an area of 100 square
centimeters. How long is each side of the portrait?

Answers

Answer:

25 centimeters

Step-by-step explanation:

Well a square has 4 sides, and 100 divided by 4 is 25.

What are the angle measurements in the triangle?

Answers

Answer:

c

Step-by-step explanation:

15PTS PLEASE HELP ASAP!
(dont write random answers pls)
look at the pic attached:

Answers

Answer:

b) 1000m

Step-by-step explanation:

the law of sines.

you know all the angles and the length of the side a

There were 43 cars in the race. They all finished the 265 miles of the race and they each used about 1 gallon of gas to go 5 miles. About how many gallons og gas did the cars use altogether to finish the race?

Answers

Answer:

2,279 gallons of gas.

Step-by-step explanation:

Given;

total number of cars in the race, t = 43 cars

total distance traveled by each car, d = 265 miles

5 miles ---------------- 1 gallon of gas

265 miles ------------ x gallon of gas

x = 265 / 5

x = 53 gallons

Total gallons of gas used by the 43 cars in the race is given as;

Total gallons of  gas = 53 gallons x 43 cars

Total gallons of  gas = 2,279 gallons of gas.

Therefore, the toal gallons of gas the cars used altogether to finish the race is 2,279 gallons.

Choose the correct solution for this equation X/2-12 = 24

Answers

Answer:

[tex]x=72[/tex]

Step-by-step explanation:

[tex]\frac{x}{2} -12=24[/tex]

[tex]x-24=48[/tex] (multiply [tex]2[/tex] on both sides)

[tex]x=72[/tex]

Hope this helps :)

fond the measure of x for this triangle​

Answers

Answer:

180° - (90° + 30°) = 180° - 120° = 60°

Step-by-step explanation:

there are 180° inside of a triangle

the square means that the angle is 90°





Estimate the volume

Answers

Answer:

Step-by-step explanation:

Well depends the shape

volume of a rectangular solid : V = length * width * height, or V = lwh.

volume of a triangular pyramid: V=13Ah

Volume of a cone: V=πr^2 h /3

etc..

m−2 over 4 =5 over 20

Answers

m=3
Plug it in and it should work
3-2 =1 over 4 which is the same as 5 over 20 because both as a percentage equal 25% or 1/4 or 0.25 if you put it in a calculator as calculators provide decimal answers

CAN ANYBODY HELP ME WITH THIS JUST WITH 7 TO 12 PLEASE IT IS FOR AN GRADE!!

Answers

Answer: I think there is a mistake for the first one because I did the math and I got 200 added but then there are more answers to this one, I added all the others by 200 and got the next number but then when I got to 6,300 I can't get the 6,700. I get something else, I add 6,000 with 200, and then I get 6,200 instead of getting 6,300. Then I added that 6,200 and 200 and got 6,400. I am confused with the second one, can you please help me understand that one. The third one is also confusing, The one is 12 nuggets eaten per minute. The fifth I am not sure if that is a solvable question, The sixth one I am not sure but I think that it is 0.066667. The seventh one doesn't even make any sense to me.

Explanation: I am sorry this was so long, I was trying to make sense of these questions. Also if this is ALL wrong sorry for even trying.

Anyone know this?need help ASAP

Answers

Answer:

45

Step-by-step explanation:

I used Toa to figure it out. First I did Tan(32) times 13 and got 45.

how many times does 50 go into 102?​

Answers

2 because 50 x 2 is 102

Answer: 2 times with a remainder of 2. Remainder basically means whats left over and in this case, it's 2

Step-by-step explanation: 2 times 50= 100

Zoey is going to invest in an account paying an interest rate of 3.4% compounded
quarterly. How much would Zoey need to invest, to the nearest ten dollars, for the
value of the account to reach $81,000 in 8 years??

Answers

Answer:

61780

Step-by-step explanation:

Which ordered pair is in the solution set of y≥13x+4 ?

(-6,1)




(-1,6)


(6,-1)

Answers

Answer:

first one

Step-by-step explanation:

I think it would be the 3rd one
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