Answer:
f(-7) = -5
Step-by-step explanation:
We want to find what f(x), or y is, when x is equal to -7.
f(x)=2x+9
Therefore, we can substitute -7 in for x.
f(-7)=2(-7)+9
Now, solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.
Multiply 2 and -7 first.
f(-7)= -14+9
Add -14 and 9
f(-7)=-5
Which of these are NOT expressions?
Check all that are true.
123
9 + 3 = 12
3(4x + 5)
6 − 5 − 4 = z
3z + 2x
HELP
Answer:
6-5-4=z
9+3=12
Step-by-step explanation:
Expressions has no equal sign
John recorded the weight of his dog Spot at different ages as shown in the scatter plot below.
Part A:
Write an equation that would describe the line of best fit.
Part B:
Using the line of best fit, make a prediction of Spot's weight after 18 months.
Answer:
A) y = 1.875x + 1.25
B) 35 pounds
Step-by-step explanation:
A) We need two points to define a line. To find an equation that would describe the line of best fit, we can use one of the first points and one of the last points. Let's use (2, 5) and (10, 20).
General equation of a line:
y = mx + b
Slope of the line:
m = (20 - 5)/(10 - 2) = 1.875
y-intercept is found replacing a known point and the slope into the general equation:
5 = 1.875*2 + b
b = 5 - 1.875*2 = 1.25
The final equation is:
y = 1.875x + 1.25
where y represents weight (in pounds) and x represents age (in months)
B) At x = 18:
y = 1.875*18 + 1.25 = 35
100 pts!!!! PLEASE HELP!!!!!
Answer:
1)3/4
2)3
3)12 MILES
4)2.5 pounds
5)5/8 pounds
am not sure but hopefully it helps you!!!!!!
Answer:
the person above is correct
Step-by-step explanation:
What value cannot be determined from the box and whisker plot?
A. median
B. mean
C. range
D. interquartile range
Answer: The answer is B. Mean :)
Can someone please help me with these problems?
Answer:
number 1 is 5 inches
Step-by-step explanation:
it fits in the 15 inches 3 times.
5*3=15
What is a reasonable estimate for the volume of a number cube:
8 cm3, 27 in?, or 1 ft??
Answer:
I think the 8 cm one :D
Find the inverse function in slope intercept
Answer:
y= -5/4+ 20
Step-by-step explanation:
1. switch x and y
2. multiply both sides by 5
3. divide both sides by -4
Collete mapped her vegetable garden on the graph below. Each unit represents 1 foot.
Collete plants an 8-foot row of lettuce in the garden. Which points could tell where the row of
lettuce starts and ends?
(-1,-6) and (8, –6)
(-4, -1) and (-4,7)
(-6, -1) and (-6,8)
(-1,-4) and (7,-4)
Help pls
Answer:
(-4,-1) and (-4,7)
Step-by-step explanation:
If Collete planted a row of lettuce, that means their coordinates must have the same vertical coordinate, or the same horizontal coordinate. Another important characteristic is that between those points, there must have 8 units of separation, because it's an 8-foot row.
Only the first choice offers these characteristic to properly represent the row of plants with 8 feet distance between the first and the last plant.
Therefore, the answer is (-4,-1) and (-4,7)
What is the distance?
Answer:10,800
Step-by-step explanation:
im not sure but what i did was 90x120=10800
Answer:
150 m
Step-by-step explanation:
By pythagoras theorem:
Diagonal² = 120² + 90³
Diagonal² = 14400 + 8100
Diagonal² = 22500
Diagonal = 150 m
Trinomial in factored form 5y^2-y-18
Answer:
Step-by-step explanation:
(5y + 9)(y - 2) is the solution
5y^2 - 10y + 9y - 18
Answer:
(5y+9)(y-2) i think
The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds. What is the mean absolute deviation of the data
set, to the nearest whole number?
26
18
11
5
Answer:
26
Step-by-step explanation:
The mean absolute deviation of the data is 11.
The mean absolute deviation (MAD) of a data set is the average distance between each data value and the mean.
To find the mean absolute deviation of the data, start by finding the mean of the data set. Find the sum of the data values, and divide the sum by the number of data values.
Given: The data below show the weights, in pounds, of a group of professional football players.
325, 310, 289, 288, 285, 285, 285, 280, 280, 273
The mean of the data set is 290 pounds.
How to find the mean absolute deviation of the data
set, to the nearest whole number?
The average absolute deviation is
[(325-290)+(310-290)+|(289-290)|+|(288-290)|+3|(280-290)|+21(280-290)|+|(273-290)|]/10
=> (35+20+1+2+5+5+5+10+10+17)/10
=> 11.
Learn more about mean on : https://brainly.com/question/16432219
#SPJ2
HELP ME QUICK PLZ WITH THIS MATH PROBLEM!!!!!!!!!!!!!!
Answer:
I believe it’s 1/2
Step-by-step explanation:
Take a point on the graph and use rise over run method
Answer:
D. 5/8 poundsStep-by-step explanation:
You can find the slope by picking a point such as (8,5).
Slope = rise over run.
(8,5) is 8 units right and 5 units up, thus the slope is 5/8
Hope this helps.
what is the equation of the line passing through ( -5, -3 ) and perpendicular
to the line representing the equation y = - 5/7x + 2?
Answer:
y = 7/5x + 4
Step-by-step explanation:
use the slope from the equation -5/7 and take the negative reciprocal to get the perpendicular slope = 7/5. Then use the equation y=mx+b. Plug in x and y from the point given and the new slope and solve for b.
(-3) = (7/5)(-5) + b, (-3) = -7 + b, add 7 to both sides. b = 4. Rewrite the equation now to be y = 7/5x + 4
For this Prism to be a right prism, all the lateral faces must be rectangles. Is enough infromation given to prove the lateral faces are rectangles? Why or why not?
Answer:
No, there isn't enough information to prove that the lateral faces are rectangles
Step-by-step explanation:
Simplify: 327
A)
3
B)
4
0)
7
D)
8
hi what is the answer to c
This graph shows a proportional relationship. (2/3, 3/4)
What is the constant of proportionality?
Answer: Hi! I'd love to help you but I'd need to see the graph.
Step-by-step explanation: Can you add a picture?
14. Given the lengths of the sides of a triangle, which of the following is a right
triangle
Triangle A: 10, 12, 15
Triangle B: 3,4,5
Triangle C: 7.8.9
Triangle D: 5. 12. 16
The length of the rectangle is 3 feet less than twice its width.
The area of the rectangle is 35 ft? . What is the length of the
rectangle?
Answer:
I think it’s 14.5 but if I am wrong correct me plz
Step-by-step explanation:
If the probability of a chance event is 0.67, it is less likely to happen
than which of the following probabilities of another chance event?
Select one:
0.76
0.61
0.65
0
Answer:
.76
Step-by-step explanation:
How much greater is 42 inches than
1 yard? Explain.
Answer:
6 inches
Step-by-step explanation:
1 yard =36 inches
36 inches< 42 inches
42-36 inches = 6 inches
Answer:
.1666676
Step-by-step explanation:
1 in = 0.0277778 yard
42 × 0.0277778 = 1.1666676
1.1666676 - 1 = .1666676
so 42 inches is .1666676 greater than 1 yard
What is the area of the polygon with verticals
Find the area. Will mark brainliest.
Answer:
a = 70
Step-by-step explanation:
a = h * b / 2
a = 10 * 14 / 2
a = 140/2
a = 70
The points (-16,r) and (-4,11)lie on a line with slope 1/2. Find the missing coordinate r?
Answer: The missing coordinate R is 5.
Step-by-step explanation:
11=1/2(-4) + B
11=-2 +B
B= 13
B represents the y-intercept
so we will use the equation y=mx + B and we know the slope and y intercept.
r= 1/2(-16) + 13
r= 5
Using Identity, find the value:
i) 203 x 205
Plss I NEED HELP!!! T^T
Step-by-step explanation:
203*205
(200+3)*(200+5)
200²+200(5+3)+15
40000+3000+15
403015
i need help!!!
y=x-7
y=6
simplify the answer as much as possible
Answer:
x=13 and y =6
Step-by-step explanation:
y=x-7
y=6
Substitute y=6 into the first equation
6 = x-7
Add 7 to each side
6+7= x-7+7
13 = x
x=13 and y =6
top side is 6 just couldn’t fit in picture
Answer: [tex]6<z<18[/tex]
Step-by-step explanation:
Use the pythagorean theorem to find z first.
[tex]c^2=a^2+b^2\\c=\sqrt{a^2+b^2}[/tex]
a = 12
b = 6
c = z
[tex]c=\sqrt{(12)^2+(6)^2}\\ c=\sqrt{144+36}\\ c=\sqrt{180} \\c=13.4[/tex]
z is greater than a and b
2)..... 1/4 x -2/5 x = 39
Answer:
x=-260
Step-by-step explanation:
1/4x-2/5x=39
Find a common denominator:
5/20x-8/20x=39
Combine:
-3/20x=39
Multiply both sides by -20/3:
x=39(-20/3)
x=-780/3
x=-260
Hope this helps! Please mark brainliest :)
Which of the following best describes the equation below? y = 5x - 15
a.neither linear or non linear
b.non linear
c.both linear and non linear
d.linear
Answer:
D linear
Step-by-step explanation:
We can tell pretty easily that this is a linear equation. How? Look at the highest degree of x!
This means the highest exponent of x. It looks like we have 5x, which you can think of as 5x to the first power. Whenever the highest exponent is 1, the equation is linear.
At the end of the school year a school system has a table with the total absences and tardies in its 10 schools what is the best way to display these data?
A. Bar Graph
B.Circle Graph
C. Stem and leaf plot
D.Ogive graph
Answer:
A
Step-by-step explanation:
