Done<br>8P4_Lessons_for_23 March 2020<br>9x + 6y – 2

Complete each ratio table.

zzz [600]

Answer: i don’t know

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The points (–1,–1) and (a,–5) fall on a line with a slope of 4. What is the value of a?<br> a=

Andreas93 [3]

Answer:

The value of a is -2

Step-by-step explanation:

We are asked to give the value of a

We are provided with some information

We are given slope to be 4

And two points ( -1 ,-1) and

( a, -5)

Given the formula for slope

m = y_2 - y_1 / x_2 - x_1

Points ( -1 , -1)

(a, -5)

x_1 = -1

y_1 = -1

x_2 = a

y_2 = -5

Inserting the values given into

m = y_2 - y_1 / x_2 - x_1

= -5 - (-1) / a - (-1)

= -5 + 1 / a + 1

= -4 / a + 1

We are given the slope to be 4

i. e. m = 4

4 = -4 / a + 1

Cross multiply

4( a + 1) = -4

Open the bracket with 4

4a + 4 = -4

Collect like terms

4a = -4 - 4

4a = - 8

Divide both sides by 4 to get the value of a

4a / 4 = -8/4

a = -2

Therefore, x_2 = -2

the value of a = -2

3 0

4 years ago

Using the slope formula, find the slope of the line through the given points. (7,4) and (5,6)

anyanavicka [17]

We can use the points (7, 4) and (5, 6) to solve.

Slope formula: y2-y1/x2-x1

= 6-4/5-7

= 2/-2

= -1

______

Best of Luck,

Wolfyy :)

4 0

4 years ago

PLEASE HELP AS SOON AS POSSIBLE!!!!WILL GIVE BRAINLY TO CORRECT ANSWER!!!!

Mice21 [21]

Answer:

The correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by $\pi$

Option D is correct option.

Step-by-step explanation:

The circumference of table top = 24 $\pi$ inches

We need to find area of table top

The formula used to find area is: $Area = \pi r^2$

We need to find radius of tabletop.

The formula used to find circumference is: $Circumference = 2\pi r$

Putting value of circumference we can find radius

$Circumference = 2\pi r\\24\pi =2\pi r\\r=\frac{24\pi}{2\pi}\\r=12$

So, radius of table top = 12

Now, finding the area:

$Area = \pi r^2\\Area=\pi(12)^2\\Area=3.14(144)\\Area=452.16\:inches^2$

So, the correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by $\pi$

Option D is correct option.

5 0

3 years ago

harrison pours sand into a bucket at a constant rate. the graph shows the total weight of the bucket and the sand over time. aft

mash [69]

Answer:

The answer is " $\bold{y=4x+17}$ ".

Step-by-step explanation:

In the given statement the graph is missing. So, the correct solution to this question can be described as follows:

Given

graph point: $\bold{(2, 25)}$

Line points: $\bold{(0,10), \ \ and \ \ (10,50)}$

The Formula of slope:

$\boxed{M= \frac{y_2-y_1}{x_2-x_1}}\\\\\Rightarrow x_1= 0, y_1= 10 \\\\\Rightarrow x_2= 10, y_2=50\\\\\Rightarrow M= \frac{50-10}{10-0}\\\\\Rightarrow M=\frac{40}{10}\\\\\Rightarrow M= 4\\$

Assuming point: (x,y)

Graph point: (2,25)

M= 4

Equation:

$\Rightarrow \frac{25-y}{2-x}=4\\\\\Rightarrow 25-y=4(2-x)\\\\\Rightarrow 25-y=8-4x\\\\\Rightarrow y= 4x-17\\$

7 0

3 years ago

Done8P4_Lessons_for_23 March 20209x + 6y – 2 – 4y + 22​

Done8P4_Lessons_for_23 March 20209x + 6y – 2 – 4y + 22