If a + b = 28 and a - b = 10, then b =?
Answers
Answer:
b=9
Step-by-step explanation:
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Data are drawn from a bell-shaped distribution with a mean of 20 and a standard deviation of 2. a. Approximately what percentage of the observations fall between 18 and 22? (Round your answer to the nearest whole percent.) Percentage of observations b. Approximately what percentage of the observations fall between 16 and 24? (Round your answer to the nearest whole percent.) Percentage of observations c. Approximately what percentage of the observations are less than 16? (Round your answer to 1 decimal place.) Percentage of observations
Answers
The formula to get the circumference is 2πr, π being pi and r being your radius.
Your r is 0.9 since the radius is half the diameter.
2πr = 2 x 3.142 x 0.9
= 5.6556cm
≈ 5.7cm
Answers
your answer is here...
given the ratio between the Length and breadth (width) of the rectangle is 5 : 3
let the Length and breadth of the rectangle be 5x and 3x approximately.
area of the rectangle = 240in²
therefore l × b = 240in²
==> 5x × 3x = 240in²
==> 15x² = 240in²
==> x² = 240/15
==> x² = 16
==> x = √16
==> x = 4in
hence, length of the rectangle = 5x = 5 × 4 = 20in
breadth of the rectangle = 3x = 3 × 4 = 12in
cheers!!
Answers
multiply both sides by -3/4 to make it 1x (-4/3 times -3/4=-12/-12=1)
x<-36/4
x<-9
13c<-169
divide both sidse by 13
c<-13
Answers
0=7x^2+8x-6
2nd degree, therefor there are 2 solutions and also 2 intersections
answe is 2 times
B. The slope is 30. This means that the horse gains a total of 30 kilograms in the first 3 years of its life.
C. The slope is 30. This means the horse gains on average 30 kilograms per use for the first 3years of its life.
D. The slope is 170. This means that the horse gains a total of 170 kilograms in the first 3 years of its life.
Answers
Answer:
Option A. The slope is 170. This means that the horse gains an average of 170 kilograms per year for the first 3 years of its life
Step-by-step explanation:
Let
t ----> the number of years
w ---> is the weight in kilograms of the horse
we know that
The equation of a line in slope intercept form is equal to
where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value
In this problem we have
where
The slope or unit rate is equal to
---> (for the first 3 years of a horse's life)
The y-intercept is equal to
---> value of w when the value of t is equal to zero
therefore
The slope is 170. This means that the horse gains an average of 170 kilograms per year for the first 3 years of its life
Answers
Answer:
1. 1/2, 2. 2, 3. 1/-3, 4. -2
Step-by-step explanation:
1) I know that the equation for slope is y2-y1/x2-x1. For number one I first found two points of the graph which is (0,3) and (2,4) (not sure if I see it correctly, its kind of blurry). I decided that (0,3) would be my y1 and x1 and (2,4) will be my y2 and x2. I later plugged the number in the equation and got 4-3/2-0 which the answer turns out to be 1/2.
2) For the rest of the questions it is kinda the same business as question 1. For question two I chose two points out of the table which wrer (-1, -12) and (1,-8) and plugged them into the equation and got -8-(-12)/1-(-1) which the answer turns out to be 2.
3) similar to question 2. The two points(2,-6) and (-4,-3) are given to you. so I plugged them in again and got -3-(-6)/-4-2 which the answer turns out to be 3/-6 into 1/-3.
4) Same with question 1 find two points of the graph. I chose (0,3) and (1,1) (again might not be accurate it's kind of blurry) I plugged them into the equation again and got 1-3/1-0 which equals -2.
Just always remember y2-y1/x2-x1=m is the equation for slope.
(m is the variable for slope)
Hoped this helped you : )