All categories

3 years ago

The graph below shows the average daily temperatures on January 1 from 1900 to 1934 for city A.

Mathematics

2 answers:

IgorLugansk [536]3 years ago

8 0

Answer:

22 degrees

Step-by-step explanation:

22 is within 4 of 24

kogti [31]3 years ago

7 0

Answer:

I'm gonna swing

18°

Step-by-step explanation:

You might be interested in

Georgia is reading at a rate of 2 pages everything 5 minutes. Which graph below shows the same unite rate?

user100 [1]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A jumping spider's movement is modeled by a parabola. The spider makes a single jump from the origin and reaches a maximum heigh

aleksklad [387]

The spider's movement is an illustration of a parabola.

The equation of a parabola is: $\mathbf{y = -\frac{1}{160}(x - 40) + 10}$
The focus of a parabola is: (40,-30)
The axis of symmetry is: $\mathbf{x = 40}$
The directrix is: $\mathbf{y = 50}$

<u>(a) The equation</u>

The spider passes through the origin.

So, we have:

$\mathbf{(x,y) = (0,0)}$

The spider jumps to a maximum height of 10mm, midway 80mm.

So, the vertex is:

$\mathbf{(h,k) = (40,10)}$

The equation of a parabola is:

$\mathbf{y = a(x - h)^2 + k}$

So, we have:

$\mathbf{0 = a(0 - 40)^2 + 10}$

Subtract 10 from both sides

$\mathbf{a(0 - 40)^2 =- 10}$

$\mathbf{1600a =- 10}$

Solve for a

$\mathbf{a =- \frac{1}{160}}$

Substitute $\mathbf{a =- \frac{1}{160}}$ and $\mathbf{(h,k) = (40,10)}$ in $\mathbf{(h,k) = (40,10)}$

$\mathbf{y = -\frac{1}{160}(x - 40) + 10}$

<u>(b) The focus, directrix and the axis of symmetry</u>

The focus of a parabola is:

$\mathbf{Focus= (h, k + p)}$

Where:

$\mathbf{p = \frac{1}{4a}}$

So, we have:

$\mathbf{p = \frac{1}{4 \times -1/160}}$

$\mathbf{p = -\frac{160}{4}}$

$\mathbf{p = -40}$

So, we have:

$\mathbf{Focus = (40,10-40)}$

$\mathbf{Focus = (40,-30)}$

The axis of symmetry is:

$\mathbf{x = h}$

So, we have:

$\mathbf{x = 40}$

The directrix is:

$\mathbf{y = k - p}$

$\mathbf{y = 10 + 40}$

$\mathbf{y = 50}$

Read more about parabolas at:

brainly.com/question/25237745

4 0

3 years ago

Translate this phrase into an algebraic expression.

PtichkaEL [24]

Answer:

n x 2 + 10

Step-by-step explanation:

All you need to do is apply this say to a number like 10 for ex: 10 x 2 + 10

= 20 + 10

= 30

Now do the same with n!

n x 2 + 10 and there is your answer!

3 0

3 years ago

The perimeter of a rectangle is 18 feet, and the area of the rectangle is 20 square feet. What is the width of the rectangle?

bogdanovich [222]

4 ft or 5 ft

i think thats right

7 0

4 years ago

Read 2 more answers

A cashier of a certain company is paid Php 550 per day for an 8-hour shift. Each

Vera_Pavlovna [14]

Answer:

Php 3,230

Step-by-step explanation:

1. calculate x= the number of days worked in a week (5days)

which is,

x= 5 (no of days) x 550 ( total amount of Php received in a day)

x= Php 2,750

2. calculate y= the number of extra hours ( 6 hours )

which is,

y= 6 ( total number of extra hours ) x 80 ( because extra hours is paid at the amount of Php 80 )

y= Php 480

3. Add x and y to get the final answer

which is,

Php 2,750 + Php 480 = Php 3,230

3 0

3 years ago