What's Ali's average speed on her walk to school if she walks halfway at 2mph and runs the rest of the way at 7mph?

Answer:

[tex]y = \frac{11}{13} x + 2 \frac{10}{13} [/tex]

Step-by-step explanation:

y= mx +c, where m is the slope and c is the y-intercept.

We need to find the value of m and c, which can be done by using the slope formula and by substituting a pair of coordinates respectively. Find m first before finding the value of c.

[tex]\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }[/tex]

[tex]slope = \frac{7 - ( - 4)}{5 - ( - 8)} [/tex]

[tex]slope = \frac{7 + 4}{5 + 8} [/tex]

[tex]slope = \frac{11}{13} [/tex]

Substitute the value of m into the equation:

[tex]y = \frac{11}{13} x + c[/tex]

Substitute a pair of coordinates:

When x= 5, y= 7,

[tex]7 = \frac{11}{13} (5) + c[/tex]

[tex]c = 7 - \frac{55}{13} [/tex]

[tex]c = \frac{91}{13} - \frac{55}{13} [/tex]

[tex]c = \frac{36}{13} [/tex]

[tex]c = 2 \frac{10}{13} [/tex]

Thus, the equation of the line is [tex]y = \frac{11}{13} x + 2 \frac{10}{13} [/tex].

Answer:

a=3

Step-by-step explanation:

[tex]2a + 6 = 12[/tex]

[tex]2a+6-6=12-6[/tex] ( Subtract 6 from both sides)

[tex]2a=6[/tex] ( Simplify)

[tex]\cfrac{2a}{2}=\cfrac{6}{2}[/tex] (Divide both sides by 2)

[tex]a=3[/tex]

~

Answer:

2a+6=12

2a=12-6

a=6/2

a=3

Answer:

a - 30.5

b - 31

c - 31

d - 2

Step-by-step explanation:

Mean is average:

31,29,31,30,31,30,31,31,30,31,30,31

366/12

30.5

Median is the middle of the data points.

Line data points up in order from least to greatest.

29,30,30,30,30,31,31,31,31,31,31,31

12/2=6

Since there is an even amount data points the median is the mean of the two middle data points:

Middle data points: 31,31

31

Mode is the most common data point.

It would be 31.

Range is highest point subtracted by lowest point.

31-29=2

Answer:

I thinks its c prob not but i mean who know

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

It sounds like the machine produced eight blocks per minute and the other charts aren't showing the consistent flow you're looking for.

Answer:

5x - 3

Step-by-step explanation:

Subtract the numbers

(2x+5) + (3x-8)  ---->  2x-3 +3x

Combine like terms

2x-3 + 3x ----> 5x - 3

Answer

5x - 3

done! :)

Answer:

1. 17/40, 0.425, 42.5%

2. 7/8, .875, 87.5%

Step-by-step explanation:

Add all of our balloons popped, which is 40. striped balloons popped is 17, so 17/40. which is 0.425 and 42.5%

for polka dots, it would be 7/8. 35/40 simplest form is 7/8 then we get .875, which is 87.5%

Answer:

[tex]beinggreat78~here~to~help![/tex]

512

The small 3 in front of 8 is the term, cubed. Cubed means to multiply the number behind it by itself 3 times. That lucky number is 8! Multiply 8 by itself 3 times.

[tex]8^3~or~ 8 * 8 * 8 = 512[/tex]

The problem is solved! Your answer is 512

Answer:

69.08

Step-by-step explanation:

divide the diameter in half so 22/2=11

Multiply pi or 3.14 and 11 so you get 34.54

then multiply that by 2 and you get 69.08

Answer:

50.33 miles

Step-by-step explanation:

The Pythagorean Theorem: a^2 + b^2 = c^2; in other words, side 1^2 + side 2^2 = hypotenuse^2.

School to Pizza Palace:

x^2 = 12^2 + 1^2 = 144 + 1 = 145

x = sqrt(145) = about 12.04

Pizza Palace to Movies:

x^2 = 8^2 + 4^2 = 64 + 16 = 80

x = sqrt(80) = about 8.94

Movies to Home:

x^2 = 6^2 + 4^2 = 36 + 16 = 52

x = sqrt(52) = about 7.21

Home to Park:

x^2 = 5^2 + 7^2 = 25 + 49 = 74

x = sqrt(74) = about 8.60

Park to School:

x^2 = 8^2 + 3^2 = 64 + 9 = 73

x = sqrt(73) = about 8.54

School to Home:

x^2 = 3^2 + 4^2 = 9 + 16 = 25

x = 5

Sum = 12.04 + 8.94 + 7.21 + 8.60 + 8.54 + 5 = 50.33 miles

Answer: Griffin is correct

Just multiply the (amount of classes) times the (amount per class), plus the sign-up fee

Griffin is correct because both should equal 175

Gigi is wrong because the local yoga studio is for 155, and the second yoga studio is 150

Answer: 0

How: The range is the difference between the smallest and highest numbers in a list or set. To find the range, first put all the numbers in order. Then subtract (take away) the lowest number from the highest. The answer gives you the range of the list.

Answer:

0.66

Step-by-step explanation:

4.91 x 10^2

Calculate 10 to the power of 2 and get 100.

4.91×100

Multiply 4.91 and 100 to get 491.

491

7.47×10^2

Calculate 10 to the power of 2 and get 100.

7.47×100

Multiply 7.47 and 100 to get 747.

747

491 divided by 747=0.65729585006693440428380187416332

0.65729585006693440428380187416332 is rounded to 0.66

Answer: Lets say BC and EF = Xcm. AC is clearly longer than BC so its greater than Xcm. If AC is longer than Xcm, and EF is Xcm, then AC is no doubt longer than EF.

Step-by-step explanation:

Answer: A is farther away from C

Step-by-step explanation:

If BC = EF, then AC has to be greater than EF. This is because A is farther away from B from C

Answer:

X = 7 :)

Step-by-step explanation:

Pythagorean theoreem: A^2 + B^2 = C^2

Now lets solve!!

5^2 + 5^2 = C^2

25 + 25 = c^2

Now we add!

25 + 25 = 50

Now we have to find the square root!!

[tex]\sqrt{50}[/tex] = 7

Have a nice day!!

Please rate and mark brainliest!!!

Answer:

x = 7

Step-by-step explanation:

All you do is use the Pythagorean theorem. The Pythagorean theorem states that A² + B² = C². The diagonal side is opposite to the 90-degree angle which means it's "C²". To find C², you add the 5² + 5² together (A² and B²). That equals 50. So C² = 50. To get rid of the square, you put the square root symbol over C² and 50. [tex]\sqrt{C^{2} } =\sqrt{50}[/tex]; C = [tex]\sqrt{50}[/tex]. You can simplify [tex]\sqrt{50}[/tex] to [tex]5\sqrt{2}[/tex] (Basically you find a square root that goes perfectly into 50 which was 25 and 2. The 25 would be canceled to 5 and the 2 would turn into [tex]\sqrt{2[/tex]). 5√2 is equal to 7.07 (Approximately). So the answer is 7.

Answer:

4

Step-by-step explanation:

The one that weighs the less is 80

Pls give brainlest.

Answer:

EAsy 4

Step-by-step explanation:

You can use the acronym PEMDAS to help you remember the Order of Operations in Maths.

Here's what it stands for:-

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

According to PEMDAS, the first operation is:-

Option A) 19-4

Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)

Answer:

b

Step-by-step explanation:

I had a question on a test that just like that one and I got it right

Answer:

three and three fourths

Step-by-step explanation:

add all the numbers and subtract from 20

Answer:

28.26

Step-by-step explanation:

How i got this answer is it says that you have 9 and 3.14 correct? Well all you have to do is multiply both of them then you get 28.26. YO WELCOME MORTAL!!

Answer:so they are questions that can be used with data and stiff so its the last one the specific brand in important

Step-by-step explanation:

D

Answer:

A.3/8

Hoped this helped

Answer:

yes

Step-by-step explanation:

Answer:

I think it is men that have more types of socks.

If right pls give brainlest.

Step-by-step explanation:

Answer:

its hard i am in grade 5 of class

Answer:

Step-by-step explanation:the answer is 5

Answer:

the answer i got was 5

Step-by-step explanation:

Answer:

the answer to a is -27 the answer to d is 28 the answer to gis 15

Answer:

1000

Step-by-step explanation:

you have asked how many pupils have been surveyed and all of them have so it's 1000 the number of pupils