please answer this. thank you

Answer:

-2/-11 or 2/11

Step-by-step explanation:

8-10=-2

-16--5=-11

-2/-11

Answer:

y= [tex]\frac{-1}{24}[/tex]x - [tex]\frac{3}{4}[/tex]

Step-by-step explanation:

(4,-1),(6,1): two points

-1(1)/4(6): find slope

slope: [tex]\frac{-1}{24}[/tex]

write in point-slope form: y+1=[tex]\frac{-1}{24}[/tex](x-6)

y= [tex]\frac{-1}{24}[/tex]x - [tex]\frac{3}{4}[/tex]

Answer:

15.625 grams

Step-by-step explanation:

The decay is First order reaction

The half life of the first order reaction is given by

T(1/2)  = ㏑2/K

where K is the reaction constant for the first order reaction

T(1/2) = 2

2 = ln 2 /K

K = ln2/2

The equation of the first order reaction is given by

Kt = ln ([tex]\frac{Ro}{R}[/tex])

where

t = time = 10years

Ro = initial concentration

R = amount left after time t

upon substituting the values

[tex]\frac{ln2}{2}*10 = ln( \frac{500}{R})[/tex]

5ln2 = ln (500/R)

ln [tex]2^5[/tex] = ln (500/R)          (a*lnb = ln[tex]b^a[/tex])

[tex]2^5 = 500/R[/tex]

R = 500/32  = 15.625grams

Therefore the amount of pesticide left after 10 years is 15.625grams

Answer:

b

Step-by-step explanation:

circumference= 2πr

37.8cm = 2πr

r= 6 cm

Area= πr^2

area = 113cm^2

Answer:

C

Step-by-step explanation:

Answer:

Thus,

[tex]\frac{\frac{2}{3}}{\frac{4}{-9}}=-\frac{3}{2}[/tex]

Step-by-step explanation:

Given the expression

[tex]\frac{\frac{2}{3}}{\frac{4}{-9}}[/tex]

[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{-b}=-\frac{a}{b}[/tex]

[tex]=\frac{\frac{2}{3}}{-\frac{4}{9}}[/tex]

[tex]\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{-b}=-\frac{a}{b}[/tex]

[tex]=-\frac{\frac{2}{3}}{\frac{4}{9}}[/tex]

[tex]\mathrm{Divide\:fractions}:\quad \frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a\cdot \:d}{b\cdot \:c}[/tex]

[tex]=-\frac{2\cdot \:9}{3\cdot \:4}[/tex]

[tex]=-\frac{18}{12}[/tex]

[tex]\mathrm{Cancel\:the\:common\:factor:}\:6[/tex]

[tex]=-\frac{3}{2}[/tex]

Thus,

[tex]\frac{\frac{2}{3}}{\frac{4}{-9}}=-\frac{3}{2}[/tex]

Answer:

6

Step-by-step explanation:

Answer: y = -1/2x -4

Step-by-step explanation:

Parallel lines have the same slope.

So first let’s find the slope of that given line.

x + 2y = 14

2y = -x+14

y = -1/2x + 7

The slope of our parallel line then will be -1/2.

Now let’s use the point they gave us to get “b” so we can finish the problem.

y= -1/2x + b

plug in (-8,0) so -8 for x and 0 for y

0 = -1/2(-8) + b

0 = 4 + b

b = -4

done!

An equation of the line that passes through the point (-8,0) and is

parallel to the line x + 2y = 14 is 2

The equation of a line in point slope form is expressed as:

Given the equation

x + 2y = 14

2y = -x + 14

y = -1/2x + 7

Slope of the line is -1/2

Substitute the point (-8, 0) and m = -1/2 into the formula

y - 0 = -1/2 (x+8)

2y = -x - 8

2y + x = -8

Hence an equation of the line that passes through the point (-8,0) and is

parallel to the line x + 2y = 14 is 2y+ x = -8

Learn more on equation of a line here: https://brainly.com/question/19417700

Answer:

15mph

Step-by-step explanation:

So to figure this out you have to get the total unit rate by dividing 30 and 2 which in total gives you 15

So congratulations you can ride 15 miles per hour :)

Answer:15 mph

Step-by-step explanation:

Answer:

31. $70 / 34. 9.5, 9, or 10.

Step-by-step explanation:

31. ok here it looks like they split the cost between each other. if im correct, that means they split the thing in 5. which means Tai is paying for [tex]\frac{2}{5}[/tex] the of the camera. [tex]\frac{1}{5}[/tex] of the total cost of the camera is 35, so 35 x 2 = 70. Tai is paying $70.00

im not good with liters and things like that with ratio, sorry about that

34. ok so the long side of the rectangle is 18 cm, and this has a ratio of 5 : 3. so for every 5 cm the small side is 3 cm. so if something was 18 cm, it would make the shorter side 9.5 or if it only requires whole numbers then either 9 or 10.

i hope this helped, i did my best :)

Answer:Fruit punch conertrat is 8

Step-by-step explanation: I did it and got 8 for fruit punch c

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

607,420

Step-by-step explanation:

hope it is correct and helps

Answer:Step-by-step explanation:

slope is 1

y intercept is 4

equation y= 1x+4

Answer:

2x=8

x=8/2

x=4

2x=4

x=4/2

x=2

Answer: y+3

Step-by-step explanation: I'm taking the test rn

Answer:

y + 3

Step-by-step explanation:

I took the test and got it right.

Answer:c

Step-by-step explanation:

Answer:

x+7=14

x=7

(7)+7=14

Step-by-step explanation:

Answer:

a) 120 words per minute

b) 130 words per minute

Step-by-step explanation:

A unit rate (also called a single-unit rate) is a type of ratio that compares 1 unit of one quantity to a different number of units of a another different quantity. When expressing in unit rate, the second quantity is in one unit.

a) Jasmine can read 120 words per minute

Jasmine reading unit rate = total number of words read / time taken

Jasmine reading unit rate = 120 words / 1 minute = 120 words per minute

b) It takes Scott one minute to read 130 words

Scott reading unit rate = total number of words read / time taken

Scott reading unit rate = 130 words / 1 minute = 130 words per minute

What do you mean by ( ,11)?

Answer: 4

Step-by-step explanation:

Answer:

1) 7x-2+5x-10=180

2)16x-2-10=180

3)16x - 12 = 180

16x=192

x=12

or

Answer: = 1/36

Step-by-step explanation: