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3 years ago

7

A bike shop has 11 red bikes, 3 blue bikes, 4 orange bikes, and 12 silver bikes. For every 1 orange bike, there are 3 what? Choo

se 1 answer: Red bikes? Blue bikes? Silver bikes?
help please

2 answers:

Marina86 [1]3 years ago

7 0

For every orange bikes, there are 3 silver bikes.

-BARSIC- [3]3 years ago

4 0

Answer:

silver bikes

Step-by-step explanation:

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Using Cramer's rule to solve linear systems.

Rzqust [24]

Answer: Last Option

$x=2,\ y=-5$

Step-by-step explanation:

Cramer's rule says that given a system of equations of two variables x and y then:

$x =\frac{Det(A_X)}{Det(A)}$

$y =\frac{Det(A_Y)}{Det(A)}$

For this problem we know that:

$Det(A) = |A|=\left|\begin{array}{ccc}4&-6\\8&-2\\\end{array}\right|$

Solving we have:

$|A|= 4*(-2) -(-6)*8\\\\|A|=40$

$Det(A_X) = |A_X|=\left|\begin{array}{ccc}38&-6\\26&-2\\\end{array}\right|$

Solving we have:

$|A_X|=38*(-2) - (-6)*26\\\\|A_X|=80$

$Det(A_Y) = |A_Y|=\left|\begin{array}{ccc}4&38\\8&26\\\end{array}\right|$

Solving we have:

$|A_Y|=4*(26) - (38)*8\\\\|A_Y|=-200$

Finally

$x =\frac{|A_X|}{|A|} = \frac{80}{40}\\\\x=2$

$y =\frac{|A_Y|}{|A|} = \frac{-200}{40}\\\\y=-5$

4 0

3 years ago

How many degrees does the earth revolve on its axis each hour? How many radians?

mestny [16]

Answer:

The earth will revolve 15° and 0.0833 radian in 1 hour

Step-by-step explanation:

We know that earth revolve one round on its axis 24 hour

We know that 1 round = 360°

So earth will revolve 360° in 24 hour

So earth will revolve $\frac{360}{24}=15^{\circ}$ in 1 hour

Now we have to find the revolution in radian

So $15^{\circ}=15\times \frac{\pi }{180}=0.0833\pi$

3 0

3 years ago

12, 21, 30 and 39 are the first four terms in a sequence

vivado [14]

Answer:

12, 21, 30, 39, 48, 57, 66, 75, 84.

Ninth term is 84.

Step-by-step explanation:

The rule for this sequence is "add 9".

So, using this rule, we can do......

12, 21, 30, 39, 48, 57, 66, 75, 84.

<em>Remember to add 9 each time!</em>

Best of luck :3

4 0

3 years ago

What is twenty six times thirty seven

insens350 [35]

Twenty six times thirty seven is 962

6 0

3 years ago

Solve for x:<br>(x-1)^3/2 = 27

Alex_Xolod [135]

(x-1)^3 / 2 = 27

For equations like this, we want to isolate x in order to get the value of it.

First, let's multiply both sides by 2 to eliminate the fraction.

(x-1)^3 = 27(2)

Now, let's take the cube root of both sides

(x-1) = ∛(27 * 2)

Now, simplify the root

x - 1 = 3∛2

Add both sides by 1

x = 1 + 3∛2

That's your answer.

Have an awesome day! :)

8 0

3 years ago

Read 2 more answers