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3 years ago

Given that x = 7.4 m and θ = 31°, work out BC rounded to 3 SFI NEED THIS ANSWER NOW

Mathematics

2 answers:

UkoKoshka [18]3 years ago

6 0

Answer:

12.333 m

Step-by-step explanation:

The ratio x/BC is the tangent of angle theta:

7.4

-------- = tan theta = 0.6

7.4

Interchanging 0.6 and BC, we get BC = ------------ = 12.333 m

0.6

Len [333]3 years ago

5 0

Answer:

59.0

Step-by-step explanation:

c=31

b=90

90+31=121

180-121=59

56 rounded to the nearest 3 sf=59.0

please mark as brainliest if correct

thank you

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There are 21 students in a class. The median age of the students is 23. The oldest student is 29.

Varvara68 [4.7K]

Answer:

1) At least one (the 11th) student is 23 (years old), Must be true

2) Some students are younger than 15 Could be true

Step-by-step explanation:

1) The given parameters are;

The number of student in the class = 21

The median age of the student = 23

The age of the oldest student = 29

Therefore, given that the median age = The age of the (n + 1)/2 th student

Where;

n = The number of student in the class = 21

∴ The median age = The age of the (21 + 1)/2 th = 11 th student, when the age of the students are arranged in increasing order, therefore, we have;

At least one (the 11th) student is 23 (years old), Must be true

2) Given that there are 10 students with ages equal to or lower than the median age, and the difference between the median age and the age of the oldest student = 29 - 23 = 6 years, we have;

Some students are younger than 15 Could be true

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3 years ago

Write an equation of a parabola with the given vertex and focus. vertex (-1,3); focus (-1,4)

NeX [460]

See https://web2.0calc.com/questions/i-need-help_4982.

6 0

3 years ago

Billy spent $30 on a T-shirt a sandwich and two books the T-shirt cost $8.95 in the sandwich cost $7.25 the books each cost the

saul85 [17]

To find out how much each book cost first we will subract to find out how many 2 books cost. Then we will divide. last but not least we will check our wok. Lets do it:-

30 - 8.95 = 21.05
21.05 - 7.25 = 13.80

CHECK OUR WORK:-

13.80 + 7.25 = 21.05
21.05 + 8.95 = 30
We were RIGHT!!!

Now lets divide:-

13.80 ÷ 2 = 6.90
1 book costs $6.90.

CHECK OUR WORK:-

6.90 × 2 = 13.80
We were RIGHT!!!!

So, 1 book costs $6.90.

Hope i helped ya!!

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3 years ago

Read 2 more answers

At the end of her work day, Rosa leaves her office and goes directly to her bank. On the graph that shows the locations of Rosa'

ikadub [295]

Find the distance between the point of bank and the point of office.

$\sqrt{(x2 - x1)^{2}+ (y2 - y1)^{2}}$
$\sqrt{(-4 - (-6)^2 + (4 - (-3)^2}$
$\sqrt{(2)^2 + (7)^2}$
$\sqrt{4 + 49}$
$\sqrt{53}$

The distance she travels is approximately 7.3 km.

Hope this helps :)

7 0

3 years ago

FINAL DUE IN 30 MINUTES: the equation 2y + x = 0 is shown on the graph below as a

julia-pushkina [17]

Answer:

Red line

Step-by-step explanation:

2y+x=0

2y=-x

y=-x/2

Put the equation into y=mx+b so you would need to subtract the x to put it on the right side so then you’ll have 2y=-x+0 then divide by 2 to get the y by itself then you’ll have y=-2x+0 that means the line would be negative and the y-intercept is 0 and the only line that follows that is the red line.

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2 years ago

Given that x = 7.4 m and θ = 31°, work out BC rounded to 3 SFI NEED THIS ANSWER NOW​

Given that x = 7.4 m and θ = 31°, work out BC rounded to 3 SFI NEED THIS ANSWER NOW