All categories

3 years ago

The equation in this system were added to solve for y. What is the value of y? X+6y=10

Mathematics

1 answer:

Dennis_Churaev [7]3 years ago

8 0

Answer: y=-5/9.

Step-by-step explanation:

I took the test this is the correct answer

You might be interested in

Please help! Thank you! xx

Marianna [84]

Hi!! if you dont want to use points google graph calculator. There is a good website called Graphing calculator-symbolab Its really helpful. Good Luck!!
Go for d!!

4 0

3 years ago

Q.4.

Anuta_ua [19.1K]

Answer

2.56m⠀

Step by Step explanation:

⠀

Let AC be the 7 meters high Flagstaff

And BC be the tower

⠀

Let the height of BC = x

The height of AB will be (x + 7)m

⠀

∠ADB = 45° and ∠CDB = 15°

(as given in the question)

⠀

By using trigonometry formula

$\sf \tan(A) = \frac{perpendicular}{base}$

⠀

So tan 45 will be

$\sf \implies \tan45{ \degree} = \frac{AB}{BD} \\ \\ \sf \implies \tan45{ \degree} = \frac{x + 7}{BD} \\ \\ \sf \implies 1 = \frac{x + 7}{BD} \\ \\ \sf \implies BD = (x + 7)m$

⠀

And tan 15 will be

$\sf \implies \tan15{ \degree} = \frac{BC}{BD} \\ \\ \sf \implies \tan15{ \degree} = \frac{x}{BD} \\ \\ \sf \implies 0.2679 = \frac{x}{BD} \\ \\ \sf \implies BD = \frac{x}{0.2679} \\ \\ \sf \implies BD = 3.7327x$

⠀

Using both Values of BD to find x

⠀

$\sf x + 7 = 3.7327x \\ \\ \sf 7 = 2.7327x \\ \\ \sf \frac{7}{2.7327} = x \\ \\ \sf \boxed{2.56 = x}$

The height of the tower is 2.56m

4 0

2 years ago

If each lap in a pool is 100 meters long, how many laps equal one mile? Round to the nearest tenth

andrew-mc [135]

Each lap in a pool = 100 meters long.
Find the total number of laps are there in one mile.
First, let’s identify the value of 1 mile in meters.
=> 1 mile = 1 609.34 meters
Now, let’s divide it by 100 to know how many laps are there:
=> 1 609.34 / 100
=> 16.0934
Round to the nearest tenths
=> 16.1
Thus, there are 16.1 laps in one mile in a pool. Every laps measures 100 meters long

8 0

4 years ago

Bob's heart rate is 72 beats per

jeyben [28]

1: 13,148,719.2 beats

2: 5 5/6 days

3: 7 days, 5 hrs, and 2 minutes

Hope this helped. Have a good day~

8 0

4 years ago

Find the cosine function that is represented in the graph.

Ad libitum [116K]

Answer:

The cosine function that is represented in the graph is:

Option B. f(x)=cos (x-pi/4)-1

Step-by-step explanation:

The parent function is cos x.

cos x at x=0 has the maximum value 1.

The graph is shifted to the right (x-pi/4) with a maximum value 0 at x=pi/4, then the graph is shifted downward 1 unit.

Then f(x)=cos (x-pi/4)-1

Please, see the attached graph:

The blue line is the parent function y=cos x

The red line is the graph given

4 0

4 years ago