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1 year ago

The value of a certain stock tripled. If you knew what the stock used to be worth, how would you find how much it is

Mathematics

1 answer:

SpyIntel [72]1 year ago

5 0

Take the amount that it first was and multiple by 3…..?

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Help me please i dont get it

Strike441 [17]

Answer:

Rotate the triangle until it makes a right angle. It should be somewhere around the coordinates (2,-1)

Step-by-step explanation:

LMK if you need more help!

6 0

3 years ago

How do you do this question?

velikii [3]

Answer:

∫₂³ √(1 + 64y²) dy

Step-by-step explanation:

∫ₐᵇ f(y) dy is an integral with respect to y, so the limits of integration are going to be the y coordinates. a = 2 and b = 3.

Arc length ds is:

ds = √(1 + (dy/dx)²) dx

ds = √(1 + (dx/dy)²) dy

Since we want the integral to be in terms of dy, we need to use the second one.

ds = √(1 + (8y)²) dy

ds = √(1 + 64y²) dy

Therefore, the arc length is:

∫₂³ √(1 + 64y²) dy

3 0

3 years ago

Triangle ABC has vertices at A(-4, -2), B(1, 7) and C(8, -2)

Arada [10]

Answer:

a). Area = 54 square units

b). Perimeter = 33.7 units

Step-by-step explanation:

Vertices of the triangle ABC are A(-4, -2), B(1, 7) and C(8, -2).

(a). Area of the triangle ABC = $\frac{1}{2}[x_{1}(y_{2}-y_{3})+x_{2}(y_{3}-y_{1})+x_{3}(y_{1}-y_{2})]$ (Absolute value)

By substituting the values from the given vertices,

Area = $\frac{1}{2}[(-4)(7+2)+(1)(-2+2)+8(-2-7)]$

= $\frac{1}{2}[-36+0-72]$

= $\frac{1}{2}(-108)$

= (-54) unit²

Therefore, absolute value of the area = 54 square units

(b). Distance between two vertices (a, b) and (c, d)

d = $\sqrt{(a-c)^{2}+(b-d)^2}$

AB = $\sqrt{(-4-1)^{2}+(-2-7)^{2}}$

= $\sqrt{106}$

= 10.295 units

BC = $\sqrt{(1-8)^2+(7+2)^2}$

= $\sqrt{130}$

= 11.402 units

AC = $\sqrt{(-4-8)^2+(-2+2)^2}$

= 12 units

Perimeter of the triangle = AB + BC + AC = 10.295 + 11.402 + 12

= 33.697

≈ 33.7 units

7 0

3 years ago

Mathswatch question on congruency. 25 POINTS

svetlana [45]

Adding to the solutions and points gotten, we can further say that: Opposite angles of the parallelogram are congruent, by the theorem of Side Angle side (SAS) (i.e angle AEB = CED )

<h3>Meaning of Congruence</h3>

Congruence can be defined as a term used to depict a state of two object being equal, in harmony, and in agreement.

The congruence of a shaped is verified by some laws which they both must satisfy.

In conclusion, the triangle is congruent with the fact stated in the question and the additional fact added above.

Learn more about congruence: brainly.com/question/3168048

#SPJ1

3 0

1 year ago

How do the real solution of a quadratic equation show on a graph of that equation?

NeX [460]

Answer:

They show as intersections with the x-axis

Step-by-step explanation:

For example, the quadratic y = x² - 1 has roots x = -1 and x = 1.

They show on the graph as intersections of the parabola with the x axis at x = -1 and x = 1.

5 0

2 years ago