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2 years ago

Please help me with this so i can keep my kitten :(

Mathematics

1 answer:

Dmitrij [34]2 years ago

3 0

Answer:

C. 9x +19

Step-by-step explanation:

Hope you can keep your kitten! :)

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A group of students were surveyed to find out if they like building snowmen or skiing as a winter activity. The results of the s

soldier1979 [14.2K]

Building Snowmen - 60
Building Snowmen (no skiing) - 10
Skiing - 80
No to building snowmen - 50

Part A:
total of students: 200
140 x
----- = ----
200 100
14000 200x
--------- = --------
200 200
70 = x
70%

8 0

2 years ago

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Factorise the following :

Free_Kalibri [48]

Answer:

(3x+4b)(a-2y)

Step-by-step explanation:

(3ax-6xy)+(8by-4ab)

3x(a-2y) -4b(-2y+a)

(3x+4b) (a-2y)

4 0

3 years ago

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= table shows a hot air balloon's height h, in feet, during a descent at various times t, in seconds.

denpristay [2]

Answer:

A. Slope is -12 feet per second

B. Yes, it is constant.

<u>Skills needed: Linear Equations, Substitution and Division</u>

Step-by-step explanation:

1) Solving Part A (we need to find the slope):

The slope is $\frac{y_2-y_1}{x_2-x_1}$ --> $y_1$ , $y_2$ , $x_1$ , and $x_2$ are all values from the table. We know that the left column is the x-values, and the right column is the y-values as that is the conventional way of depicting them.

2) Using the y-values of 1150 and 1090, and their corresponding x-values (5 and 10 respectively), we can get the slope:

- $\frac{y_2-y_1}{x_2-x_1}$ ==> $\frac{1090-1150}{10-5}$ ==> $1090-1150=-60, 10-5=5$ ==> $\frac{-60}{5}$

$\frac{-60}{5} =-12$ , so the slope is -12.

==================================================================

1) Part B (analysis)

We can see that no matter what 2 y-values and their corresponding x values we use, the slope always is the same. This means that the rate of change is constant.

8 0

2 years ago

The center of a circle and a point on the circle are given. Write the equation of the circle in standard form.

nirvana33 [79]

$(x-2)^2+(y+2)^2=34$

Step-by-step explanation:

Write the equation of the circle in standard form, where center: (2,-2), point on the circle: (5,3)

The equation of circle in standard form is:

$r^2=(x-h)^2+(y-k)^2$

Where (h,k) is center and r is the radius.

We are given center (2,-2) and we need to find radius r

We know a point on circle (5,3) and center (2,-2)

Finding distance between these points:

$r = d= \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2} \\r= d=\sqrt{(5-2)^2+(3-(-2))^2}\\r= d=\sqrt{(3)^2+(5)^2}\\r= d=\sqrt{9+25}\\r= d=\sqrt{34}$

So, r = √34

then r^2 = 34

So, equation of circle is:

$(x-h)^2+(y-k)^2=r^2\\(x-2)^2+(y-(-2))^2=34\\(x-2)^2+(y+2)^2=34$

Keywords: Equation of circle

Learn more about equation of circle:

#learnwithBrainly

7 0

2 years ago

The volume of a rectangular prism with a length of x meters, a width of x − 1 meters, and a height of x + 11 meters is no more t

Rashid [163]

Answer:

Length of the rectangular prism = 4 meters

But other possible values = (-5meters or - 9 meters)

Step-by-step explanation:

The volume of a rectangular prism = Length × Width × Height

From the question above,

Length = x meters

Width = x - 1 meters

Height = x + 11 meters

Volume of the Rectangular prism = 180 cubic meters

Hence,

(x) × (x - 1) × (x + 11) = 180

We expand the brackets

(x)(x - 1) (x + 11) = 180

x² - x(x + 11) = 180

x² (x + 11) - x(x + 11) = 180

x³ + 11x² - x² + 11x =180

x³ +10x² - 11x = 180

x³ + 10x² - 11x -180 = 0

The above is a polynomial

We solve this polynomial to find x

x³ + 10x² - 11x -180 = 0

(x - 4)(x + 5) (x + 9) = 0

x - 4 = 0

x = 4

x + 5 = 0

x = -5

x + 9 = 0

x = -9

We are asked to find the various values for the length hence,

From the above question, we are told that

Length = x meters

Therefore, the length of this rectangular prism = 4 meters or -5 meters or -9 meters.

8 0

3 years ago

Read 2 more answers