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dexar [7]
1 year ago
6

Finding the Area to ABC (plotted below). All of the examples I’ve seen only discuss points and coordinates when I’m working on a

n Area and Perimeter unit.

Mathematics
1 answer:
vovikov84 [41]1 year ago
8 0

Answer:

Explanation:

Given the coordinates of the triangle as:

B(2, -8), C(-6, -2), and D(-7, -5)

The area is obtained using the formula:

A=\frac{1}{2}\begin{bmatrix}{x_1} & y_1{} & {1} \\ {x_2} & {y_2} & {1} \\ {x_3} & {y_3} & {1}\end{bmatrix}

Using the given parameters, we have:

undefined

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Mrs. Wilkinson can buy a 20-ounce box of cereal for $3.60 or a 28-ounce box of cereal for $4.20. Which is the better buy?
Vsevolod [243]
3.60 / 20 = 0.18

4.20 / 28 = 0.15


The 28-ounce box has better value, as cost-per-ounce is lower.
4 0
3 years ago
Shelia went snowboarding. She spent $118 for the pass and snowboard rental. The snowboard rental cost $25. What percent of the t
padilas [110]
I believe the answer is about 78.81% because you subtract 25 from 118. Then that would be 93. 118 is equal to the 100% and 118 divide by 1.18 equals 100. Divide 93 from 1.18 gives you the answer
5 0
3 years ago
Read 2 more answers
Darcy, Jason, and Maria share $268. Jason has $20 more then Darcy
aleksandr82 [10.1K]

Answer:

Darcy and Jason have $124 combined

Step-by-step explanation:

8 0
3 years ago
Please help its urgent Proof
LuckyWell [14K]

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Step-by-step explanation:

7 0
3 years ago
For this function:
galina1969 [7]

Answer:

C)

Minimum of t = -\infty

Maximum of t = +\infty

Minimum of h(t) = -\infty

Maximum of h(t) = +20

D)

D(-\infty,+\infty)

R(-\infty,+20]

Step-by-step explanation:

C)

Here in this problem, we are given the function, which is

h(t)=-5t^2+20

We observe immediately the following:

- The function has no limitations on the value of t - in fact, it contains no square roots, no logarithms, and no fractions; therefore, every value of x is acceptable in this function. This means that it has the variable t has no minimum or maximum values.

- On the other hand, h(t) cannot take any value. In fact, we notice that this is a quadratic function with the second-degree term with a negative coefficient: this means that it is a downward parabola. So, it has no downward limit (it goes to -\infty), but it has a maximum, which corresponds to the vertex of the parabola.

The x-coordinate of the parabola is given by

x_v = -\frac{b}{2a}=0

because the coefficient of the 1st-degree term, b, is zero. So, the y-coordinate of the vertex is

h(0)=-5\cdot 0^2+20 = 20

So, the maximum of h(t) is 20. Therefore we have:

Minimum of t = -\infty

Maximum of t = +\infty

Minimum of h(t) = -\infty

Maximum of h(t) = +20

D)

The domain of a function is defined as the set of values of the independent function x for which the function has a valid value.

Therefore in this case, the domain of h(t) is the set of all values allowed for t: so, from part C, we can say that the domain is

D(-\infty,+\infty)

So, all real values.

The range of a function instead is the set of all values of the dependent variables, y.

So in this case, the range of h(t) is the set of all values that h(t) can take.

From part C, we know therefore that the range is

R(-\infty,+20]

Where +20 has the ] instead of ) because it is also an allowed value.

5 0
3 years ago
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