Find the length of side BC.
Give your answer to 3 significant figures.

Find The Length Of Side BC.Give Your Answer To 3 Significant Figures.

Answers

Answer 1

Answer:

BC ≈ 19.4 cm

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos71° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{AB}{BC}[/tex] = [tex]\frac{6.3}{BC}[/tex] ( multiply both sides by BC )

BC × cos71° = 6.3 ( divide both sides by cos71° )

BC = [tex]\frac{6.3}{cos71}[/tex] ≈ 19.4 cm ( to 3 significant figures )


Related Questions

Which expression is equivalent to 2 -35?
Choose 1 answer:
35. 2
35 2
2 + (-35)
02 (-35)

Answers

2 + (-35)
because the plus sign would cancel out due to the negative
-(35-2)
35
-
2
____
33
Answer is -33

write the opposite to the following:- 50km Towards east​

Answers

Answer:

50 kilometres towards west .......

i guess

how do you find the axis of symmetry?​

Answers

Answer:

The axis of symmetry always passes through the vertex of the parabola . The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .

Step-by-step explanation:

Answer:

x=-b/2a

Step-by-step explanation:

axis of symmetry is the line that across the vertex from a parabola(ax^2+bx+c).

The expression to find vertex is -b/2a

Thus, x=-b/2a is a vertical line that across the vertex aka the axis of symmetry.

Jenny spent half of her weekly allowance at the movies. To earn more money her parents leg her clean the gutters for $9. What is her weekly allowance if she ended with $12? Add an equation and answer.

Answers

Answer:

3

Step-by-step explanation:

i think because 12-9=3

solve for X round your answer to the nearest tenth​

Answers

Answer

Are you sure the 31° is not a typo. It would make sense is the angle was 30° to solve for the other sides. Or do you know one more side, because then it could be solved by the Pythagorean theorem

Step-by-step explanation:

Sorry if my answer is wrong

Answer:

Thursday, 28th Jan 2021

8.38 PM

the answer in the photo

izin cerita guys,

jadi sebenernya ga ada yg namanya "kebetulan" ya kan?

hmm, jadi udah takdir ya kan?

sbnernya gw mau kenalan, tapi malu.

hmm

yoi

kalian pernah minum air cuka? yang itu lohh enak

mampir ke Palembang bung :v

yoo biso kan kito ketemu :v

sekian. btw joke kalian garing bro.

ganteng doang, .... (isi sendiri)

Please help it’s either C or A I’m pretty sure! Please help :(

Answers

I can’t see the photo send photo and maybe I can help

I NEED HELP RIGHT NOW PLEASE!!
solve 30-5x=4 for x​

Answers

Answer:

x=5.2

Step-by-step explanation:

IN decimal form x=5.2 in mixed number form x=5 1/5

Answer:

x=5.2

Step-by-step explanation:

30-5x=4

First, subtract 30 from both sides of the equation

-5x=-26

Then divide by -5 to both sides of the equation

x=5.2

Checking your answer

30-5(5.2)30-264

Convert each radian measure into degrees.
4) 8pi/3

Answers

Answer:

[tex]\boxed {\boxed {\sf 480\textdegree}}[/tex]

Step-by-step explanation:

First, remember that π radians is equal to 180 degrees. Therefore, to convert from radians to degrees, multiply by 180/π.

The radian measure given is 8π/3

[tex]\frac {8 \pi}{3} * \frac{180}{\pi}[/tex]

Multiply the fractions. Multiply across the numerator, then across the denominator.

[tex]\frac{8 \pi *180}{3 * \pi}[/tex]

The pi in the numerator and denominator will cancel out.

[tex]\frac{8 *180}{3 }[/tex]

Multiply.

[tex]\frac{1440}{3}=480[/tex]

The radian measure 8π/3 is equal to 480 degrees.

What is 9% of 50? Pls.

Answers

Answer:

4.5

Step-by-step explanation:

what’s the answer????????

Answers

5 to the power of 0 is always 1.

5 to the negative 3 is written as 1/ fifth to the negative power

The blue dot is at what value on the number line?

Answers

The blue dot is at 4

if 10 calculator cost £120 how much does 8 cost?

Answers

Answer:

1 calculator cost £12  

120 divided by 10 = 12

now 8 x 12 = £96

8 calculators cost £96

Step-by-step explanation:

Answer:

£96

Step-by-step explanation:

If you have 10 calculators which cost £120, you just need to divide 120 by 10 which will give you 12. Since 8 is only 2 away from 10, you just need to times 12 by 2, giving you 24, then take that away from 10! Hope this helped!

Three (3) consecutive integers is such that the largest is x. Write an expression
for the smallest.

Answers

Answer:

Consider 3 consecutive integers: (smallest) x, x+1 and x+2 (largest)

Step-by-step explanation:

Five times the smallest means 5x

Sum of the largest and five times the smallest means x+2+5x

This sum is -244 means x+2+5x=-244

Solve this equation

x+2+5x=-244

6x+2=-244

6x=-244-2

6x=-246

x=-41

So, smallest number is -41, second is -40 and largest is -39

You're answer is -39+5(-41)=244

A computer repair company charges an initial fee plus $40 per hour for repair work. The total cost
was for 3 hours of working. Assume the relationship is linear. Find and
interpret the rate of change and the initial value.

Answers

Answer: 120

Step-by-step explanation: This answer is 120 because you multiply the three hours by the $40 you earn an hour and you get your product.

Hope this helps

Alex has 75 buttons. He gives 15 buttons to emma what percent of the button did Alex give to emma? just need help i don't understand what i need to do;-;

Answers

Answer:

So you have a total of 75 You give away 15So 15/75 to find the % So he gave away 20%

5(6-3)=6+3 show ur work

Answers

Answer:

No Solution

Step-by-step explanation:

Simplify  6−3  to  3.

5×3=6+3

Simplify 5×3  to 15.

15=6+3

Simplify  6+3 to 9.

15=9

Since 15=9 is false, there is no solution.

No Solution

We have to use PEMDAS since there is parentheses, so we start with 6-3, which equals 3, then we can multiply that by 5, to get 15. Now the right side, that’s just simple addition, 6+3=9, so final answer is 15=9. Would appreciate brainliest!

Please help!!
Will mark brainliest

Answers

Answer:

2/3x+5=y

Step-by-step explanation:

We already know that this has to be linear and that its y-intercept is 5 ((0,5) is a point on the table). That means that the equation is

mx+5=y.

Now all we need to do is plug in some points.

3m+5=7

(Subtract 5 from both sides)

3m=2

m=2/3

Help me please!!


Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

The measurement of angle B is _______
The measurement of angle A is _______
The measurement of angle C is _______

Answers

Answer:

The measurement of angle B is 135°

The measurement of angle A is 60°

The measurement of angle C is 75°

Step-by-step explanation:

Angle A is the same value of 60, Angle B is pretty much just 180 - 45, and so is angle C.

A denim shirt at a certain factory requires 25 yards of material How many shirts can be made from 775 yards of material?
Ata certain factory | denim shirts can be made from 775 yards of material
Diyane werType an integer proper traction or mixed number)

Answers

Answer:

31

Step-by-step explanation:

775 yards divided by 25 is equal to 31 meaning 25 can go into 775 31 times

A plumbing company charges a $95 fee for each job, plus $65 foreach hour that the job lasts. The expression 65h + 95can be used to calculate the cost of a job in dollars, where hrepresents the number of hours the job takes to complete. Part A.What is the cost of a job that lasts 1.5 hours?

Answers

Answer:

the answer would be 160H

The cost of a job that lasts 1.5 hours is  $ 192.5

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

The charge of each job by the plumbing company = $ 95

The charge on each hour for each job = $ 65

The equation for the cost of a job is = 65h + 95

where h is the number of hours for the job

Now , to calculate the cost of job that lasts 1.5 hours ,

substitute the value of h as 1.5

And , the equation becomes

= 65h + 95

= 65 ( 1.5 ) + 95

= 97.5 + 95

= $ 192.5

Hence , the cost of a job that lasts 1.5 hours is  $ 192.5

To learn more about equations click :

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What is the y-intercept of y=-4/3x+4?
A) (0,4)
B) (4,0)
C) (0.-4)
D) (-4,0)



PLEASE HELP ME

Answers

Answer:

A. (0,4)

Step-by-step explanation:

You can calculate the y intercept when x = 0.

Substitute 0 for x:

y = (-4/3)(0) + 4

= 0 + 4

= 4

How many times can you fit 8 hours and 24 hours?

Answers

Answer:

in what? if you meant 8 hours in 24 hours than 3 times

Step-by-step explanation:

Answer:

The answer is 3 times.

Step-by-step explanation:

[tex]since \: 8 \times 3 =24

then \: you \: can \: fit \: 8 \: hours \: 3 \: times \: in \: 24 \: hours.[/tex]

Emest worked 10 1/2 hours this week and earns $9.20 per hour. How much did he earn this week?

Answers

Emest earned $96.6
Hope it helps u!!!!!

Joey has 30 model airplanes to paint. He has painted 18 models so far.
What percentage of the models has he painted?

Answers

60%... the rest of this is irrelevant it makes you write 20 characters

Answer:

60%

Step-by-step explanation:

18/30 = 3/5 100 divided by 5 =20 x 3=60%

The granola Summer buys used to cost $6.00 per pound, but it has been marked up 15%. Suppose Summer buys 3.5 pounds of granola. How much more does it cost at the new price than at the old price?

Answers

New price = 24.15
Old price = 21

Answer:

the answer would be 3.15

Step-by-step explanation:

4 divided by 1/2

need explanation to pls

Answers

Answer:

[tex](4 \div \frac{1}{2}) = 4 \times 2 = \boxed 8✓\\[/tex]

8 is the right answer.

Answer:

8 is the answer

Step-by-step explanation:

4=whole number

1=numerator

2=denominator

when we do reciprocal it became

4x2/1=8/1

so the answer is 8/1

decimal from 8/1=8

8/1 is an improper fraction and be written as 8

I hope it helps you


A larger number is twelve more
than a smaller. Their sum is
84. Find the numbers.​

Answers

Answer:  bigger number is 48 and smaller number is 36

Step-by-step explanation:

Answer:

The smaller number  ⇒ y = 36The larger number ⇒ x = y + 12 = 36 + 12 = 48

Step-by-step explanation:

Let the larger number be = xLet the smaller number be = y

As the larger number is twelve more  than a smaller, so

x = y + 12

As the sum of larger and smaller numbers is 84, so

x + y = 84

now substituting x = y + 12 in th equation x + y = 84

x + y = 84

(y + 12) + y = 84

2y + 12 = 84

subtract 12 from both sides

2y + 12 - 12 = 84 - 12

2y = 72

divide both sides by 2

2y/2 = 72/2

y = 36

Thus,

The smaller number  ⇒ y = 36The larger number ⇒ x = y + 12 = 36 + 12 = 48

Perform the indicated operation.

10 + 19

Answers

Answer: 29

Step-by-step explanation:

Ten plus twenty = 29

35% of a number is what fraction of that number​

Answers

Answer: 7/20

Step-by-step explanation:

Answer:

7/20

Step-by-step explanation:

Monique and her dad built a hang glider together. After testing the new glider for safety, the glider was ready for the first big flight. Monique jumped off a tall sand dune and traveled in a diagonal line from the top of the dune toward the ground. She flew for 137 feet and landed on level ground at a spot 105 feet horizontally from where she took off. How tall was the sand dune

answers are
a. -88 ft
b. 88 ft
c. 173 ft
d.cannot be determined

Answers

Answer:

it would have to be A I think

Pythagorean theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

The length of the sand dune is 88 feet.

What is the Pythagorean theorem?

Pythagorean theorem states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.

We have,

Hypotenuse = 137 feet

One side length:

Horizontal length = 105 feet

Another side length = side = length of the sand dune.

Using the Pythagorean theorem we get,

137² = side² + 105²

18769 = side² + 11025

side² = 7744

side = √7744

side = 88 feet

Thus,

The length of the sand dune is 88 feet.

Learn more bout the Pythagorean theorem here:

https://brainly.com/question/21926466

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