Answer:
18m/s
Step-by-step explanation:
Formula = 450 meters in 25 seconds
Average speed = 450m/25s
The unit rate is equivalent to 18m/s.
[Basically, just divide 450 meters by 25 seconds to get 18 meters per second. 18 is the unit rate :) ]
[ Thank you so much for the brainliest!! I appreciate it! ]
Solving a System of Linear Equations: Substitution
The tables represent two linear functions. The equation represented by the first table is given below. y = 5.75x + 34.5 What linear equation is represented by the second table? What is the solution to the system of equations?
(Please explain with directions on how to do the equation!)
Answer:
where is the picture of the tables
Robert can mow 3 1/2 acres in 3/4 of an hour on his riding lawn mower.
At this rate, how many hours will it take him to mow 8 acres?
Answer:
It will take 1 5/7 hours
Step-by-step explanation:
3/4 of an hour is;
3/4 * 60 minutes = 45 minutes
3 1/2 acres is done in 45 minutes
8 acres will be done in x minutes
Thus, mathematically;
3 1/2 * x = 8 * 45
7x/2 = 360
7x = 2 * 360
7x = 720
x = 720/7 minutes
Let us convert this to hours
That will be;
720/7/60 = 720/(60 * 7) = 720/420 = 12/7
= 1 5/7 hours
I'll mark you brainiest ---- find the range of possible values for the third side of a triangle if given two side lengths. 9yd, 32yd
Answer:
The third side of the triangle must have a length between 23 yd and 41 yd.
Step-by-step explanation:
Triangle Inequality Theorem
Let y and z be two of the side lengths of a triangle. The length of the third side x cannot be any number. It must satisfy all the following restrictions:
x + y > z
x + z > y
y + z > x
Combining the above inequalities, and provided y>z, the third size must satisfy:
y - z < x < y + z
We have to side lengths: y=32 yd and z = 9 yd, thus the range of possible values for the third side x is:
32 - 9 < x < 32 + 9
23 < x < 41
The third side of the triangle must have a length between 23 yd and 41 yd.
PLZ HELP!! WILL GIVE BRAINLIEST!!
Look at the picture and solve plz!!!
1. LA ≅ SA 1. Given
2. TA ≅ AT 2. Reflexive Property, which states that the mirror of oneself is the same measurement as itself.
3. ∠LAT ≅ ∠SAT
- TA ≅ AT (Reflexive property)
- SA ≅ LA (Given)
- TA is a angle bisector of ∠SAL (Definition of angle bisector). (CPCTC)
- ∠SAT ≅ ∠LAT (CPCTC)
4. ΔLAT ≅ ΔSAT (CPCTC) (Corresponding Parts of Congruent Triangles are Congruent).
Graph the inequality
y > -3x + 3
Answer:
see attachment
Step-by-step explanation:
X-3>7 what is the answer to this problem?
Answer:
X>10
Step-by-step explanation:
Complete the ratio table.
Answer:
63, 946
Step-by-step explanation:
The circumference of a circle can be found using the equation 2rpi.
I like to think of this as Dpi with D being the diameter since 2r is equal to D.
42 times 3.14 is roughly 132. x times 3.14 is 198, meaning 198 divided by 3.14 is roughly 63. 301 times 3.14 is roughly 946.
Find x in the following triangle
Answer:
hope it helps, twanks you (owo)
Step-by-step explanation:
Solving for X in a Right Triangle
Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X
PLZZZ HURRY
A sample with a sample proportion of 0.4 and which of the following sizes
will produce the widest 95% confidence interval when estimating the
population parameter?
A. 90
B. 60
C. 75
D. 120
The size 60 will produce the widest 95% confidence interval when estimating the population parameter.
What is confidence interval?'A confidence interval is the mean of your estimate plus and minus the variation in that estimate.'
According to the given problem,
IN a sample with n number of people surveyed with a probability of a success of [tex]\pi[/tex] and a confidence level of 1-α , we have the following confidence interval of proportions.
[tex]\pi[/tex] ± [tex]z\sqrt{\frac{\pi (1-\pi )}{n} }[/tex]
In which, z is the z score that has a p value of 1 -(α/2)
The margin of error is:
M = z [tex]\sqrt{\frac{\pi (1-\pi )}{n} }[/tex]
The higher the margin of error, the wider an interval is.
As the sample size increases, the margin of error decreases. If we want, the widest possible interval, we should select the smallest possible confidence interval.
Hence, we can conclude that 60 is the correct answer.
Learn more about confidence interval here:
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Annie measures 9 teaspoons of lemon juice for a recipe. There are approximately 4.9 milliliters in one teaspoon. How many milliliters of lemon juice did Annie measure?
Answer:
44.1 milliliters of lemon juice
Step-by-step explanation:
Number of teaspoons of lemon juice = 9 teaspoons
Amount of milliliters in one teaspoon = 4.9 milliliters
Amount of lemon juice = Number of teaspoons × Amount of milliliters
= 9 × 4.9
= 44.1 milliliters
A women is twice as old as her daughter . twenty one years ago she was three times her daughter . What is the women's present age?
Answer:
84
Step-by-step explanation:
women=x
daughter=y.
x=2y.
x-21=3(y-21).
2y-21=3y-63.
42=y.
x=84.
Hope this helps plz hit the crown :D
Answer:
Daughter's present age = 42 years
Women's present age = 84 years
Step-by-step explanation:
Daughter's present age = x years
Women's present age = 2*x = 2x
21 years ago:
Daughter's age = x - 21
Women's age = 2x - 21
Women's age = 3*daughter'sage
2x - 21 = 3*(x - 21)
2x - 21 = 3x - 63 {Subtract '2x' from both sides}
- 21 = 3x - 2x - 63
-21 = x - 63 {Add 63 to both sides}
-21 +63 = x
42 = x
Daughter's present age = 42 years
Women's present age = 2*42 = 84 years
help pls, will mark brainliest !!!
Answer:
The answer is A.
Step-by-step explanation:
A has a common vertex but the angles are not adjacent.
: )
Answer:
A
Step-by-step explanation:
The areas of two similar triangles are 18cm^2 and 8cm^2. One of the sides of the first triangle is 4.5cm. What is the length of the corresponding side of the other triangle? Please answer ASAP!!! Thank you!!!
Answer:
3 cmStep-by-step explanation:
The area is the product of two dimensions, therefore the scale factor is:
A/A' = (b*r*h*r)/(b*h) = r²r² = 18/8r = √9/4 = 3/2 = 1.5The length of the corresponding side will be:
a/a' = ra' = a/ra' = 4.5 / 1.5 a' = 3 cmWrite the equation in slope-intercept form for the line that passes through (5, 4) and (6,-1).
SHOW YOUR WORK
Answer:
y = -5x + 29
Step-by-step explanation:
Slope-Intercept Form of the Line
Given a line of slope m and y-intercept b, the equation of the line can be written as:
y = mx + b
The slope can be calculated by using the formula:
[tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Where (x1,y1) and (x2,y2) are the points through which the line passes.
We are given the points (5,4) and (6,-1), thus:
[tex]\displaystyle m=\frac{-1-4}{6-5}=\frac{-5}{1}=-5[/tex]
Now we use one of the points to find the value of b, for example (5,4):
4 = -5(5) + b
b = 25+4 = 29
Thus, the equation of the line is:
y = -5x + 29
At what rate is a car traveling, if it goes 157.5 miles in 2.5 hours?
a. 393.75 miles per hour
b. 15 miles per hour
c. 63 miles per hour
d. 73 miles per hour
Answer:
63
Step-by-step explanation:
Please help me thanks so much?!?!
Answer:
200
Step-by-step explanation:
first convert 1 l to ml = 1000 ml
1000 divided by 5 spoons = 200
A bag has 5 balls: 1 red (R), 1 green (G), 1 yellow (Y), 1 blue (B), and 1 orange
(0)
You randomly choose a ball. What is the sample space?
OA. (RG, Y, B, O)
OB. (R,G, Y, B, P)
Oc. (G, )
OD. (R, G, Y, B)
Answer: R,G,Y,B,O
Step-by-step explanation: Sample space is just any and all possible outcomes
The sample space of the given experiment is (R,G, Y, B, O). So option A is the correct one.
What is a Sample Space?A sample space is a set of all the possible outcomes in a random experiment. It is usually denoted by the letter, S.
The subset of the sample space are events.
Given experiment is that you randomly choose a ball from a bag which consists of 5 balls.
Balls are 1 red (R), 1 green (G), 1 yellow (Y), 1 blue (B), and 1 orange (O).
Each ball is of different color.
When you randomly choose a ball, the chosen ball can be any of the colors given.
So sample space = (R,G, Y, B, O)
Hence the required sample space is (R,G, Y, B, O).
Learn more about Sample Space here :
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nction Complete the function table.
Function: f(h) = 1 + 9
h
9
10
2
12
Find the point of intersection of the lines x-3 = 0 and y-5 = 0.
Answer:
x = 3 and y = 5
Step-by-step explanation:
Given equations are :
x-3 = 0 ....(1)
y-5 = 0 ....(2)
We need to find the point of intersection of the lines.
Add 3 both sides in equation (1).
x-3+3=3
x = 3
Now, add 5 to both sides of the equation.
y-5+5=0+5
y = 5
Hence, the required point of intersection of the lines is x = 3 and y = 5.
The sum of Ken's, k, and Alan's, a, ages is 62. Ken is 31 years older than Alan.
Which of these systems of equations below best describes the ages of Ken and
Alan?
Answer:
k + a = 62
k = 31 + a
Step-by-step explanation:
Given that:
Sum of ken and Alan's age = 62
Ken is 31 years older than Alan
k + a = 62 - - - (1)
k = 31 + a - - - (2)
Hence, the system of equation which best describes the ages of Ken and Alan are:
k + a = 62
k = 31 + a
Mrs. Darby would like to determine if the cafeteria should sell snacks during non lunch periods.
where do i put the points? PLS HELP ASAP!
(15 points)
berline.
a. -1
b. 1.75
c. -1.75
d. -2
e. -2 1/2
f.
0
Answer: I don’t get it where the question for me to read it and find the answer, you just put this
a. -1
b. 1.75
c. -1.75
d. -2
e. -2 1/2
f.
And that all you did but where is the question????
Step-by-step explanation:
write the algebraic expression for: The length of a rectangle is 3 feet less than 4 times its width.
Answer:
Perimeter (P) is: 48
Problem to solve:
48=2(2x+3)+2(x)
48=4x+6+2x
48=6x+6
48-6=6x+6-6
42=6x
42/6=6x/6
7=x
Step-by-step explanation:
The length of a rectangle is 3 more than twice its width. The perimeter is 48 feet. Find the width. Hint: You did this in Module 3 Assignment 5. Now you have to write the equation and solve it.
a. 16
highlight%28b%29. 7
c. 8
d. 21
e. 24
:
Formula for the perimeter of a rectangle is: highlight%28P=2L%2B2W%29, P is perimeter, L is length, W is width.
Let Width (W) be:x
Then length (L)is: 2x+3
x + y = -5
x - y = -7
Answer:
The First one x + y = -5 the x would be -4 and the y would be -1 and for the Second one x - y = 7 The x would be -8 or -9 and the y would be -1 or -2
Step-by-step explanation:
Hope this helps you. :) For the second one -9 - -2 = -7 and -8 - -1 =7 so either one could work.
The area of a carpet is 18sqcm and breath is 3cm find its length
Answer:
6
Step-by-step explanation:
area of carpet =18
the formula to calculate the area of carpet is l×b so.
l×b=18
l×3=18
3l =18
l=18/3
L=6
Help solve for X
Please ignore the other scribbles in pencil.
Thanks
Answer:
x = 5
Step-by-step explanation:
[tex] \frac{14.8}{x} + 2.4 = 5.36 \\ \\ \frac{14.8}{x} = 5.36 - 2.4 \\ \\ \frac{14.8}{x} = 2.96 \\ \\ 14.8 = 2.96x \\ \\ x = \frac{14.8}{2.96} \\ \\ x = 5[/tex]
7. What is the slope of the line that passes through the pair of points (2, 5) and (8, 3)?
A. 1/3
B. -1/3
C. 3
D.-3
Answer:
c
Step-by-step explanation:
A chocolate chip recipe uses 0.2 pounds of chocolate chips per batch. How many batches can be made with 3 pounds of chocolate chips?
What is the length of side BC of the triangle?
Answer:
28
Step-by-step explanation: