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Lady bird [3.3K]
3 years ago
10

4.2x-1.4y=2.1 Solve for y

Mathematics
1 answer:
givi [52]3 years ago
7 0

Answer: y = -1.5+3x

Step-by-step explanation:

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Determine whether the following statement is true or false. Justify your answer.
riadik2000 [5.3K]

Answer:

B. The statement is false. This is true only if θ is an acute angle in a right triangle.

Step-by-step explanation:

Trigonometric ratio formula can only be applied to define the relationship between the angles of a right triangle and its side lengths.

Therefore, it is impossible to define or find the tan θ of "any triangle". It only applies to right angled triangles.

In the case of a right triangle, given a reference angle, θ, tan θ = side lenght opposite to θ ÷ side lenght adjacent to θ (tan θ = \frac{opp}{adj}.

A right triangle has two acute angles and 1 right angle that which is 90°.

Therefore, we can conclude that:

"B. The statement is false. This is true only if θ is an acute angle in a right triangle."

3 0
3 years ago
Turtles can live a long time. This stem-and-leaf plot shows the ages (in years) of the turtles in the reptile house of the Kalam
madreJ [45]

Answer:

1,1,2,5,6,7,10,10,13, 18, 19, 20, 24, 26, 27, 31, 36, 54, 63, 67

The average age  is  22 yrs

The sum  of the ages  is  440 yrs

When  two  of the turtles leave, the average is  21 yrs....and there are 18 turtles left

So....the sum of the ages is  21 * 18  = 378

And the difference  in the sums  is  62

The only two values that sum to 62  are  26 and 36

So.....the box turtle must have been 36 and the map turtle must have been 26

Step-by-step explanation:

3 0
2 years ago
Solve the equation v^3=80
Luba_88 [7]

Answer:

4.31

Step-by-step explanation:

Find the cube root of both sides of the equation.

^3\sqrt{v^3} = ^3\sqrt{80}

The cube root will cancel out the cubed in the variable.

v = ^3\sqrt{80}

Find the cube root of 80. I rounded to the nearest hundredth.

v = 4.31

3 0
3 years ago
Read 2 more answers
Here is a right angled triangle work out the value of x using trigonometry
tatiyna

~~~~~\sin 30^{\circ} = \dfrac{\text{Perpendicular}}{\text{Hypotenuse} }\\\\\\\implies \dfrac 12 = \dfrac{8}x\\\\\\\implies x =  8\cdot2\\\\\\\implies x = 16 ~ \text{cm.}

6 0
3 years ago
If the cost of a washing machine is 15480 if the selling price is 17000 what is the profit or lost
Nata [24]

Answer:

1,520

Step-by-step explanation:

6 0
3 years ago
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