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2 years ago

The table lists the top four times for the 50-yard freestyle at a swim meet. Who had the fastest time?

Mathematics

1 answer:

Advocard [28]2 years ago

4 0

Answer:

Step-by-step explanation:

Nobody likes a short, one-word-answer. Let’s make sure other people understand everything.

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An aircraft factory manufactures airplane engines. The unit cost C (the cost in dollars to make each airplane engine) depends on

butalik [34]

Answer:

90 engines must be made to minimize the unit cost.

Step-by-step explanation:

Vertex of a quadratic function:

Suppose we have a quadratic function in the following format:

$f(x) = ax^{2} + bx + c$

It's vertex is the point $(x_{v}, y_{v})$

In which

$x_{v} = -\frac{b}{2a}$

$y_{v} = -\frac{\Delta}{4a}$

Where

$\Delta = b^2-4ac$

If a>0, the minimum value of the function will happen for $x = x_v$

C(x)=x²-180x+20,482

This means that $a = 1, b = -180, c = 20482$

How many engines must be made to minimize the unit cost?

x value of the vertex. So

$x_{v} = -\frac{b}{2a} = -\frac{-180}{2(1)} = 90$

90 engines must be made to minimize the unit cost.

3 0

2 years ago

What statement is true about these two triangles?

timofeeve [1]

Answer:

Step-by-step explanation:

5 0

2 years ago

What is the slope of a line that contains the points (-4,-8) and (2,-2)

Bond [772]

Answer:

Step-by-step explanation:

Slope is given by

m = (y2 -y1)/(x2-x1)

= ( -2 - -8)/( 2 - -4)

=( -2+8) / (2+4)

=6/6

5 0

2 years ago

Read 2 more answers

Given that 2x+y= y+x+1 and y =2x+2y solve for x and y

Pachacha [2.7K]

Answer:

x=1,y=-2

Step-by-step explanation:

7 0

2 years ago

What is the slope of a line that is parallel to the line -6y=8x-4?

lesya692 [45]

Answer:

-4

Step-by-step explanation:

-6y=8x-4

0=8x+6y-4---(i)

slope (m1)=-coefficient of x

coefficient of y

=-8

= -4

As the lines are parallel,

m1=m2

so,

The slope of line parallel to the line having equation -6y=8x-4 is -4

5 0

2 years ago