Mathematics High School

show that b=7
Please help i have 10 minutes to answer

Show That B=7 Please Help I Have 10 Minutes To Answer

Answers

Answer 1

Answer:

The value of Cos(60°) is ½

Step-by-step explanation:

B)as we know

b²=a²+c²-2ac.cos(b)

b=√5²+8²-2.5.8×cos(60°)

b=√25+64-80×½

b=√25+64-40

b=√89-40

b=√49

b=7 (proven)

Answer 2

We have to Prove b=7.

What is a Triangle?

A plane figure with three straight sides and three angles.

How to solve it?

As we know,

b²=a²+c²-2ac.cos(b)

b=√5²+8²-2.5.8×cos(60°)

b=√25+64-80×½

b=√25+64-40

b=√89-40

b=√49

b=7 (proven)

Learn more about Triangle:

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Related Questions

PLZ HELP WITH MATH ASAP

Answers

Answer:

C, because the segment in front of it is the smallest

Answer:

yes

Step-by-step explanation:

17) -15x=0
Help me math is next period!!

Answers

Answer:

x = 0

Step-by-step explanation:

-15x = 0

Divide both sides by -15

x = 0

x =0

need the answer asap

Answers

B I think.correct if I’m wrong

Triangle MNO on a coordinate plane is translated 6 units up to create triangle M' N' O'. Which one of the following rules describes this transformation? Help

Answers

Answer:

you answered correct it is d

Step-by-step explanation:

PLEASE HELP describe the slope of a line then find the slope

Answers

Answer:

0?

Step-by-step explanation:

the line is fully horizontal meaning there isn't a slope

Can you guys help me ?

Answers

The graph should look like this
Pattern for each point is up 2 over 3 because the slope is 2/3

Number 8 I need help plz

Answers

the answer to number 8 is b
The answer should be b

You have fifteen blankets that each take up 557 cubic inches of space. How many blankets could you pack into a 14-inch moving box?
a. 10 blankets
b. 4 blankets
c. 3 blankets
d. 13 blankets

Answers

Answer:

b i think please tell me if im wroung

Answer is 4.

Volume of cube:

The formula of volume of a cube of length l is l x l x l.

(Here), Given

volume of box = (14 x 14 x 14) = 2744 cubic inches.

1 blanket take 557cubic inches

Now, Number of blankets packed in a 14 inch box = 2744 / 557

=> 4.9

i.e., 4 complete blankets can pack.

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In 2 ½ hours, Joaquin can bake 4 dozen cookies. What is his unit rate in dozen cookies per hour?
b. he has 5 hours before the bake sale starts. how many dozen cookies can he bake?

Answers

Answer:

1.6 dozens per hour

b. 8 dozens

Step-by-step explanation:

2.5 = 4

4/2.5 = 1.6

1.6 dozens per hour

1.6 x 5 = 8

8 dozens

If f(x) = -2x^2 + 3 then f (-3) =
1) -15
2) 21
3) 39
4) -18

Answers

Answer:

1) -15

Step-by-step explanation:

Hi there!

In order to solve this problem, plug in -3 for all the x-values.

Your equation will become[tex]-2(-3)^2 +3.[/tex]  

Now all you have to do is solve!

[tex]-2(9) + 3[/tex]

[tex]-18 + 3[/tex]

[tex]-15[/tex]

f(-3) = -15

I hope this helped!

If you bought a stock last year for a price of $139, and it has risen 5.4% since
then, how much is the stock worth now, to the nearest cent?
PLS ANSWER I HAVE LITTLE TIME

Answers

Answer:

To the nearest cent, the stock will be worth $ 146.51

Step-by-step explanation:

Hope this helped ;)

The three sides of a triangle are in the ratio 2:4:5. If the perimeter is 22 m, find the
length of the shortest side.

Answers

Answer:

what are primary numbers

Answer:

the length of the shortest side would be 4

Step-by-step explanation:

2:4:5

2 + 4 + 5 = 11

4 + 8 + 10 = 22

4:8:10

What is the slope of the line 3y=6x-1

Answers

Answer:

2

Step-by-step explanation:

Simplify 3y=6x+1;

y=2x-1/3

y=mx+b , where m represents the slope.

Slope; 2

Answer:

slope=2

Step-by-step explanation:

PLEASE HELP!! Thank you in advance.
The formula for the lateral surface area of a cylinder is S=2πrh , where r is the radius of the bases and h is the height.

Solve for h.

Answers

Answer:

Solving for h gives us:

[tex]h = \frac{S}{2\pi r}[/tex]

Step-by-step explanation:

Given that

Lateral surface area of cylinder = S = [tex]2\pi rh[/tex]

Solving the equation or formula for a particular variable involves isolating the variable on one side of the equation without any factor or denominator.

In the given formula:

Dividing both sides by 2πr

[tex]\frac{S}{2\pi r} = \frac{2\pi rh}{2\pi r}\\h = \frac{S}{2\pi r}[/tex]

Hence,

Solving for h gives us:

[tex]h = \frac{S}{2\pi r}[/tex]

What two equations have a solution of (3, 6)

Answers

Answer:

y=2x and y=-x+9

Step-by-step explanation:

HELP PLEASE 30 points
Part 1 out of 2
To repair a large truck or bus, a mechanic might use a parallelogram lift. The figure shows a side view of
the lift. FGKL, GHJK, and FHJL are parallelograms.
G
2
T: +
3
5
6
8
17
K
3
Which angles are congruent to 21?
<
,2
2
are congruent to 21.
Check
Next

Answers

Answer: <3, <6, <8

Step-by-step explanation:

Trust me

what is the inequality of j - 3 >2

Answers

Answer:

J>5

Step-by-step explanation:

I hope this helps let me know if it does

Asha and Atulya has bookshelves of the same size. Asha's shelf is 2/3 full of books and Atulya's shelf is 2/5 full. Whose bookshelf is more full? By what fraction?

Answers

Answer: See explanation

Step-by-step explanation:

From the question, the following information can be gotten:

Asha's shelf is 2/3 full of books

Atulya's shelf is 2/5 full.

a. Whose bookshelf is more full?

Asha's shelf.

We can convert to Percentage to get this:

Asha = 2/3 × 100 = 66.7%

Atulya = 2/5 × 100 = 40%

By what fraction?

= 2/3 - 2/5

= 10/15 - 6/15

= 4/15

Kasha drove 135 miles and used 5.4 gallons of gas . The fuel efficiency of her car remains consistent and gas costs $2.59 per gallon, how much money can she expect to fill up her tank for an upcoming 300-mile roadtrip?

Answers

Answer:

31.80

Step-by-step explanation:

12 x 2.59 =$31.08

20 The table shows the linear relationship between the balance of a student's
savings account and the number of weeks he has been saving.
Savings Account
Week
0
1
3
6
8
13
Balance
(dollars)
32
39
53
74
88
123
Based on the table, what was the rate of change of the balance of the
student's savings account in dollars and cents per week?
Record your answer and fill in the bubbles on your answer document.

Answers

Answer:

7 dollars

Step-by-step explanation:

5. From the choices below, choose an expression that is equivalent to the
expression below.
22

Answers

Answer: -(22/4)

Step-by-step explanation:

Arrange numbers in ascending order (smallest on top, largest at the bottom)
38, 175, 0, -50, -49
A) 175
B) 38
C) -50
D) -49

Answers

Answer:

1. -50

2. -49

3. 38

4. 175

Step-by-step explanation:

hope it helps

Answer:

C,D,B,A

Step-by-step explanation:

The more the negitive number is, it's smaller. So, the answer would be C,D,B,A

From end zone to end zone , a football field is 120 yards long .how long is the football field in feet

Answers

Answer: 360 feet

Step-by-step explanation: Since there's 3 (feet) in 1 (yard) then in 120 yards you'll have to multiply it by 3, since 3 feet is in 1 yard. So in every yard is 3ft so you'll multiply.

120*3=360

Answer:

360

Step-by-step explanation:

HELP WILL GIVE 15 POINTS, GOOD RATING AND BRAINIEST

Answers

This is 5 points not 15 smh

what is bd?
(b is far off to the left but was cut out because image was too big) ​

Answers

Answer:

bd is a medical term meaning twice a day

I need some help on this

Answers

Answer:

y = 0

Step-by-step explanation:

If it is 7:25 A.M. and Antonio started his run 25 minutes ago, what time did Antonio start running?

Answers

7:00 lololololololollololol

Joe is saving for a new online video game. He has some money already in his savings, and he can add $2.50 each week. This relationship is shown in the graph. Write an equation and explain what the slope and the y-intercept mean in this situation?

Answers

Answer:

Y=2.50×+b

Step-by-step explanation:

y-intercept and put that into b and theres ur equation the y- intercept (B) represents the initial money that joe had in his savings the 2.50× part or the slope is the money that he states he can add each week.

♡Have a nice day♡

A) An empty bulldozer weighed 5 8 ⁄10 tons. If it scooped up 7 1 ⁄10 tons of dirt, what would be the combined weight of the bulldozer and dirt?











B) Gwen's new puppy weighed 8 5 ⁄8 pounds.Her new kitten weighed 2 2 ⁄8 pounds. How much more did the puppy weigh than the kitten?









C) Amy walked 2 5 ⁄6 miles in the morning and another 3 3 ⁄7 miles in the afternoon. What was the total distance she walked?








D) A recipe called for using 2 6 ⁄8 cups of flour before baking and another 3 1 ⁄2 cups after baking. What is the total amount of flour needed in the recipe?









E) 113 – 2







F) 215 – 4

Answers

Answer: 12 9/10 and 10 7/8

Step-by-step explanation:

5 8/10 plus 7 1/10 equals 12 9/10

8 5/8 plus 2 2/8 equals 10 7/8

Question 3
1 pts
Question 19
How many sides does a regular polygon have if the measure of each interior angle is 160
degrees?
[blank1]
Question 4
4 pts

Answers

Answer:

18

Step-by-step explanation:

each exterior angle=180-160=20

number of sides=360/20=18

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