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castortr0y [4]
3 years ago
13

Solve by quadratic formula: 3x^2 - 10x - 20= 0

Mathematics
1 answer:
Arlecino [84]3 years ago
5 0

this is your answer, i hope this helps you

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1.What letter can you draw on a coordinate plane to help you remember the order of the quadrants?
weeeeeb [17]
1. I would call quadrants i, ii, iii, iv as a, b, c, d

<span>2.Which type of variables are usually on the y-axis and represent output?
</span>they usually are the dependent variables, that is, they depend on the x value, such as velocity, price, income.

3.Which type of variables are usually on the x-axis and represent input?
those are the independent variables such as time, distance, price.

<span>4.Which type of slope is represented on a graph as a horizontal line? </span>
the slope of an horizontal line is zero.

<span>5.Find the slope of 2x + 4y = 12
</span>the general form of the line is:
4y = - 2x + 12
y = -(1/2)x + 3

hence the slope is -1/2
5 0
3 years ago
What is the area of the shaded portion of the circle?
SOVA2 [1]

Answer:

The first option is the correct one, the area of the shaded portion of the circle is

[/tex](5 \pi -11.6)ft^2[/tex]

Step-by-step explanation:

Let us first consider the triangle + the shadow.

The full area of the circle is the radius squared times pi, so

A=(5 ft)^2 \cdot \pi \\25 ft^2 \cdot \pi

Since \frac{72^{\circ}}{360^{\circ}}=\frac{1}{5}, the area of the triangle + the shaded area is one fifth of the area of the whole circle, thus

A_1=\frac{1}{5}25 ft^2 \cdot \pi\\ =5 ft^2 \cdot \pi

If we want to know the area of the shaded part of the circle, we must subtract the area of the triangle from A_1.

The area of the triangle is given by

A_{triangle}=\frac{1}{2}\cdot (2.9+2.9)ft \cdot 4 ft\\= 11.6 ft^2

Thus the area of the shaded portion of the circle is

A_1-A_{triangle}=5 \pi ft^2-11.6ft^2\\= (5 \pi -11.6)ft^2

3 0
3 years ago
Jordan buys 2 baseball jersey and gloves that cost $44. She gives the clerk two fifty dollar bills to pay the exact amount. How
butalik [34]

Answer: 2 ÷ 44 ≈ x x

x is 22

Step-by-step explanation:

4 0
3 years ago
Determine which equation is written in function form:
Mila [183]

<em>Greetings from Brasil... </em>

A 1st degree function can be written in two ways:

F(X) = AX + B

or

Y = AX + B

note that F(X) = Y

So, looking at the alternatives in the question, only Y = 7X/3 - 8 is equivalent to Y = AX + B, where:

A = 7/3

B = - 8

then

\large{\boldsymbol{\mathbf{Y = \frac{7X}{3}-8\Leftrightarrow Y=AX+B}}}   <em>a function of the 1st degree</em>

answer:

<h2>Y = (7/3)X - 8</h2>
7 0
3 years ago
The cost price of a car is $60 000. If the marked price is set so as to make a profit of 15%, find the
blsea [12.9K]

Answer:

marked price = $69,000

Step-by-step explanation:

cost price = $60,000

profit

= 15%

= 15% × cost price

= 15/100 × $60,000

= $9000

marked price

= cost price + profit

= $60,000 + $9000

= $69,000

3 0
2 years ago
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