Answer:
Yes; Inverse Property...
I hope it helps..
During a guided tour of Sindrow Castle, a group of tourists climbed to the top of Fineview Tower.
At the top, the guide asked the six children in the group to guess how many steps they had
climbed. Their guesses were 155, 157, 167, 168, 179 and 183.
The guide revealed that the closest guess was only 3 more or less than the correct number and
that two of the other guesses were no more than 10 away.
How many steps had they climbed?
A 160
B 164
C 171
D 176
Answer:
C
Step-by-step explanation:
What is (1.2 x 10^-5) / 4 in scientific notation??
Answer:
3×[tex]10^{-6}[/tex]
Step-by-step explanation:
Hope it helps ;)
Answer:
3x10^-6
Step-by-step explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. The sign of the exponent will depend on the direction you are moving the decimal.
In ΔEFG, e = 4.7 inches, f = 4.8 inches and g=3.6 inches. Find the measure of ∠E to the nearest 10th of a degree.
Answer:66.3
Step-by-step explanation:
Which angles are vertical angles and, therefore, congruent?
A and D
A and G
A and E
A and F
Answer:
A and F
Step-by-step explanation:
Jim’s family is choosing whether to go to a restaurant for lunch or for dinner. The cost of a salad is $7 at lunch and $9 at dinner. The cost of a steak is $10 at lunch and $12 at dinner. Each person will choose either a salad or a steak regardless of the mealtime. Jim calculates the food bill to be $41 if they go during lunch and $51 if they go during dinner.
1.Write a system of equations that could be used to solve the problem. Define your variables.
2.Solve by any algebraic method (elimination/substitution). Work must be shown! How many people will choose a salad?
Answer:
3
Step-by-step explanation:
edge
Answer:
C. 3
Explanation:
edge 2020
Can someone try to help me please??
Answer:
1) 180 degrees; straight angle
2) (5x-18)+(4x+45)=108
3) x=17
4) 90 degrees; right angle
5) (3x+6)+(5x+4)=90
6)x=10
Step-by-step explanation:
If the fractions are 1/6 1/3 1/2 and 2/3 what is the rule for the sequence
Answer:
66
Step-by-step explanation:
dolars per hour
What if the bag did not tell us how many total servings and only told us how many total cups?
If the bag of dry fruit has 5 cups and each serving is ¼ of a cup, how many servings would the bag have?
Answer:
20 servings
Step-by-step explanation:
To find how many servings the bag would have, divide 5 by 0.25:
5/0.25
= 20
So, the bag would have 20 servings
A recipe uses 3 eggs to make 2 dozen cookies. There are 12 cookies in 1 dozen. How many eggs are used to make 6 dozen cookies? A.3 B.6 C.9 D.12 please help it would mean a lot <3
Answer:
C.9
Step-by-step explanation:
2 doz =3eggs
4 doz = 6 eggs
6 doz = 9 eggs
does 5+4=8 and does 1+1=2
Answer:
5+4=9
and the second one is right
Step-by-step explanation:
;)
Answer:
the first one is incorrect but the second one is correct!
Step-by-step explanation:
5 + 4 = 9
if you have 5 apples and you want to add 4 more
5 + 1 + 1 + 1 + 1 = 9
A particle moves along a horizontal line so that its position at time t, t ≥ 0, is given by
s(t) = 40 + te^−t/20.
Find the minimum velocity of the particle for 0 ≤ t ≤ 100.
Answer:
The minimum velocity of the particle = [tex]-e^{-2 }[/tex] units
Step-by-step explanation:
Given - A particle moves along a horizontal line so that its position at time t,
t ≥ 0, is given by s(t) = 40 + te^−t/20.
To find - Find the minimum velocity of the particle for 0 ≤ t ≤ 100.
Proof -
Velocity, v(t) = [tex]\frac{d}{dt}(40 + te^{-\frac{t}{20} } )[/tex]
Now,
[tex]\frac{d}{dt}(40 + te^{-\frac{t}{20} } )[/tex] = [tex]\frac{d}{dt}(40 ) + \frac{d}{dt}(te^{-\frac{t}{20} } )[/tex]
= 0 + [tex]t\frac{d}{dt}(e^{-\frac{t}{20} } ) + e^{-\frac{t}{20} }\frac{d}{dt}(t )[/tex]
= [tex]t(-\frac{1}{20} )e^{-\frac{t}{20} } + e^{-\frac{t}{20} }[/tex]
⇒v(t) = [tex]-\frac{t}{20}e^{-\frac{t}{20} } + e^{-\frac{t}{20} }[/tex]
Now,
For minimum velocity, Put [tex]\frac{d}{dt}(v(t)) = 0[/tex]
Now,
[tex]\frac{d}{dt}[v(t)] = \frac{d}{dt} [ -\frac{t}{20}e^{-\frac{t}{20} } + e^{-\frac{t}{20} } ][/tex]
= [tex]-\frac{2}{20} e^{-\frac{t}{20} } + \frac{t}{400} e^{-\frac{t}{20} }[/tex]
Now,
Put [tex]\frac{d}{dt}(v(t)) = 0[/tex], we get
[tex]-\frac{2}{20} = - \frac{t}{400}[/tex]
⇒t = 40
Now,
Check that the point is minimum or maximum
Calculate [tex]\frac{d^{2} }{dt^{2} } [v(t)][/tex]
Now,
[tex]\frac{d^{2} }{dt^{2} } [v(t)][/tex] = [tex]\frac{d}{dt} [ -\frac{2}{20} e^{-\frac{t}{20} } + \frac{t}{400} e^{-\frac{t}{20} }][/tex]
= [tex]\frac{1}{400}e^{- \frac{t}{20} } [ 3 - \frac{t}{20}][/tex]
⇒[tex]\frac{d^{2} }{dt^{2} } [v(t)][/tex] = [tex]\frac{1}{400}e^{- \frac{t}{20} } [ 3 - \frac{t}{20}][/tex] > 0
∴ we get
t = 40 is point of minimum
So,
The minimum velocity be
v(40) = [tex]-\frac{40}{20}e^{-\frac{40}{20} } + e^{-\frac{40}{20} }[/tex]
= [tex]-2e^{-2 } + e^{-2 }[/tex]
= [tex]-e^{-2 }[/tex]
⇒v(40) = [tex]-e^{-2 }[/tex] units
∴ we get
The minimum velocity of the particle = [tex]-e^{-2 }[/tex] units
What is -3/4x + 1/2y - 9/4x - 11/2y in simplest form?
Answer: -3x-5y
Step-by-step explanation:
8 1/16-5 1/2 I need help with this.pls
Step-by-step explanation:
I hope this helps. Ans:41/16 alternate form: 2 9/16, 2.5625
If y=x+4 and y=3x+2, what must be true about x + 4 and 3x+2?
Answer:
x=1 must satisfy both equations.
Step-by-step explanation:
1)Y=X+4
2)Y=3X+2
IT Means x+4=3x+2
3x-x=4-2;
2x=2 ; x=1 must satisfy both equations
Pierre found a new store where he hopes to save
money on his supplies. He bought 4 brushes and 7
tubes of paint for $32. He has another order for 6
brushes and 8 tubes of paint that will cost $43.
What is the cost of one brush? What is the cost of
one tube of paint?
The daily rainfall experienced by Soaking City has been recorded on 9 randomly selected days throughout the year. This process has been repeated for every possible combination of 9 days in a year. The standard error of the mean has been calculated and is equal to 0.39 inches. If the rainfall was recorded on 36 (instead of 9) randomly selected days throughout the year, the standard error of the mean would be equal to:____.
a. 0.078 inches.
b. 0.248 inches.
c. 0.045 inches.
d. 3.429 inches.
If the rainfall was recorded on 36 (instead of 9) randomly selected days throughout the year, the standard error of the mean would be equal to 0.195 inches.
The standard error measures the variability or uncertainty in an estimate or statistic based on a sample. It is often denoted as SE or SE(θ), where θ represents a population parameter of interest.
Given that
the standard error of the mean, SE = 0.39 (when sample size,n = 9).
Let s be the standard deviation around the mean, then
Since SE = [tex]\dfrac{s}{\sqrt n}[/tex]
In this sample,
0.39 = [tex]\dfrac{s}{\sqrt9}[/tex]
s = 0.39 × 3
s = 1.17.
If the sample size is increased from 9 to 36,
SE = [tex]\dfrac{1.17}{\sqrt36}[/tex]
SE = [tex]\frac{1.17}{6}[/tex]
SE = 0.195 inches.
Thus, the standard error of the mean changes from 0.39 inches to 0.195 inches.
Learn more about Standard Error here:
https://brainly.com/question/13179711
#SPJ6
A complex shape made of 2 rectangles. The top rectangle measures 4 centimeters by 4 centimeters. The bottom rectangle measures 6 centimeters by 10 centimeters.
What is the area of the shape?
40 square centimeters
76 square centimeters
100 square centimeters
224 square centimeters
Answer:
B. 76 square centimeters
Step-by-step explanation:
Edg 2021 it's correct
Answer:
Step-by-step explanation:
b
Answer this correctly with an explanation and I’ll give u brainalist + 10 points
Answer:
A because when you add the angles up it has to equal 180
Step-by-step explanation:
Answer:
A) ∠ABC and ∠DEF
Step-by-step explanation:
Supplementary angles add up to 180 degrees total. So if you take 180 and subtract 118 you get 62.
∠ABC = 62
∠DEF = 118
180 - 118 = 62
180 - 62 = 118
118 + 62 = 180
Help plz....................
Which number line shows the solution to the inequality 9x-4<5? I NEED IT ASAP PLSS free 15 points
Answer:
B would be your answer I think Don't hold me to it!
Step-by-step explanation:
Answer:B -4-2 0 2 4
Step-by-step explanation:
Can someone help me with the vertex of the parabola
Answer:
The vertex is (-1.5, 11.25)
Step-by-step explanation:
Determine whether the following sequence is geometric. If so, find the common ratio.
1, -5, 25, - 125, ...
Geometric sequence
-5 each term is multiplied by -5
find the value of s in rectangle
Answer:
s + 1 = 2s
s = 1
Part A
In the boxes provided, write three equations that can be solved to
find h, the number of hours it takes James to mow each of the
three lawns. Use h and = in each equation.
Equation for Mrs. Chavez's lawn:
Equation for Mr. Ortiz's lawn:
Equation for Mrs. White's lawn:
Answer:
Step-by-step explanation:
To find the number of hours for each, divide the amount of money he had received by the amount he would receive for 1 hour of work. (Answers are in the image below) I hope I wasn’t too late to help:)
Progress:
The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on
Solve and graph the following inequality: 4x + 5 > 13
Answer:
Option (1)
Step-by-step explanation:
Given inequality is.
4x + 5 ≥ 13
We will further solve this inequality,
(4x + 5) - 5 ≥ 13 - 5
4x ≥ 8
[tex]\frac{4x}{4}\geq \frac{8}{4}[/tex]
x ≥ 2
Therefore, on a number line solution of x will be all values of x greater than equal to 2.
Which will be represented by and arrow starting with a solid point from x = 2 directing towards numbers greater than 2.
Option (1) will be the answer.
Work out the size of angle x.
Answer:
First: 105
Second: 65
Third: 133
Fourth: 129
Fifth: 60
What is the answer?
A)44
B)42
C)45
D)48
Answer:
44
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
because you take 3 pulse 2
in a classroom 1/6 of the students are wearing blue shirts and 2/3 of wearing white shirts there are 36 students in the class how many students are wearing blue shirts
Answer:
6 students are wearing blue shirts
Step-by-step explanation:
you divide 36 by 6 and that equals 1/6 of the students.
Use the figure below to determine which of these statements are true? Select All that
apply ,
A < GDR and < GDA are complementary angles.
BCGDC and
C
D.
E
Answer:
A B C F
Step-by-step explanation:
c) 20 blank CD-Roms cost £3.20
How much do 75 CD-Roms cost?
Answer:
the cost of 75 CD Roms is £12
Step-by-step explanation:
The computation of the 75 CD roms cost is shown below:
Since it is mentioned that
for 20 blank CD roms it cost £3.20
So for 75 CD Roms, the cost would be
= £3.20 × 75 ÷ 20
= £12
Hence, the cost of 75 CD Roms is £12