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3 years ago

HELP PLS!!!

Mathematics

1 answer:

kotykmax [81]3 years ago

5 0

Answer:

B. $\frac{60 hours}{1} \times \frac{1 day}{24 hours}$

Step-by-step explanation:

Converting 60 hours to days:

24 hours = 1 day

60 hours = x day

Cross multiply

$24 hours \times x = 60 hours \times 1 day$

Divide both sides by 24 hours

$x = \frac{60 hours \times 1 day}{24 hours}$

Thus,

$\frac{60 hours \times 1 day}{24 hours} = \frac{60 hours}{1} \times \frac{1 day}{24 hours}$

The expression that shows how to convert 60 hours to days is:

$\frac{60 hours}{1} \times \frac{1 day}{24 hours}$

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Find the minimum, maximum, range, mean, and median for the data set.

Papessa [141]

Minimum: 37
maximum: 208
range: maximum - minimum = 208 - 37 = 171
mean: (37 + 43 + 54 + 83 + 102 + 117 + 160 + 208)/8 = 100.5
median: middle number (83 + 102)/2 = 92.5

3 0

3 years ago

Read 2 more answers

Is it positive, zero, or negative?

Naddik [55]

Answer:

Discriminant is positive.

Step-by-step explanation:

From the given graph,

Vertex of the parabola = (-3, -2)

y - intercept of the parabola = (0, 1)

Vertex form of a parabola opening upwards is,

y = a(x- h)² + k

Here (h, k) is the vertex.

By substituting the values of the vertex in this equation.

y = a(x + 2)² - 3

Since this parabola passes through (0, 1)

1 = a(0 + 2)² - 3

a = $\frac{(1+3)}{4}$

a = 1

So the equation of the parabola will be

y = (x + 2)² - 3

y = x² + 4x + 4 - 3

y = x² + 4x + 1

Here a = 1, b = 4 and c = 1 (comparing with standard quadratic equation y = ax² + bx + c)

Discriminant of a quadratic equation is represented by,

(b² - 4ac)

Therefore, the value of discriminant = (4)² - 4(1)(1)

= 16 - 4

= 12

Therefore, discriminant of the given graph is positive.

5 0

3 years ago

What is the equation of the graph below?

oee [108]

Answer:

B) $y=-(x-3)^{2}+2$

Step-by-step explanation:

We are given,

The graph of the parabola opens downwards.

This means that the leading co-efficient of the function will be negative.

So, options C and D are not possible.

Moreover, it is given that the graph cuts x-axis near $1\frac{1}{2}$ i.e. $\frac{3}{2}$ = 1.5 and $4\frac{1}{2}$ i.e. $\frac{9}{2}$ = 4.5.

i.e. At y=0, the value of x is near $\frac{3}{2}$ and $\frac{9}{2}$ .

A. So, in $y=-(x+2)^{2}+2$ , we put y =0.

i.e. $(x+2)^{2}=2$

i.e. $x=-2\pm \sqrt{2}$

i.e. x = 0.68 and x = 3.41

We see that this does not crosses the x-axis at the given points.

So, option A is wrong.

B. Also, in $y=-(x-3)^{2}+2$ , we put y =0.

i.e. $(x-3)^{2}=2$

i.e. $x=3\pm \sqrt{2}$

i.e. x = 1.68 and x = 4.41.

Thus, this equation cuts the x-axis near the given points i.e. 1.5 and 4.5.

Hence, the equation of the given graph is $y=-(x-3)^{2}+2$ .

8 0

3 years ago

On a coordinate plane, a curve starts in quadrant 2, curves up to the y-axis, and then decreases into quadrant 1.

N76 [4]

Answer:

Step-by-step explanation:

continuous

increasing then decreasing

3 0

4 years ago

Read 2 more answers

I do not know how to do graphs, if you could help that would mean a lot!

azamat

Answer:

x usually goes on the x axis whereas y or the answer u can choose goes on y

Step-by-step explanation:

3 0

3 years ago