Answer:
42.9=42.900
Step-by-step explanation:
The 9 at the tenth digit and other 9 is at tenth digit as well. 0 means nothing so they're the same value.
A flashlight shines straight up into the sky, 9 ft to the right of a tent located at the origin. For which values of A, B, and C will Ax+By=C represent the beam of light?
The values of A = 1, B = 0, and C = 9 would be Ax + By = C represent the beam of light.
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
A flashlight shines straight up into the sky, 9 ft to the right of a tent located at the origin.
Given that the direction must be vertical, it should appear to have a consistent or constant x-coordinate.
Here Ax + By = C represents the beam of light.
So the required equation for a line is:
⇒ x = 9
Comparing the given equation, we get
Ax + By = C
Here A = 1, B = 0, and C = 9
Therefore, the values of A = 1, B = 0, and C = 9 would be Ax + By = C represent the beam of light.
Learn more about the equation here:
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Find the distance between the following two points:
*
(-5,0) and (-2,-1)
Answer:
[tex]d = \sqrt{10}[/tex]
Step-by-step explanation:
Distance Formula: [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Simply plug in the 2 coordinates into the distance formula to find distance d:
[tex]d = \sqrt{(-2-(-5))^2+(-1-0)^2}[/tex]
[tex]d = \sqrt{(-2+5)^2+(-1)^2}[/tex]
[tex]d = \sqrt{(3)^2+1}[/tex]
[tex]d = \sqrt{9+1}[/tex]
[tex]d = \sqrt{10}[/tex]
write in scientific notation 0.02571
Chanelle selects a marble from a container and then returns it to the container. When she does this 3 times, the probability of choosing a red marble all 3 times is 1/216. Based on this information, what is the probability of Chanelle choosing a red marble the first time she selects a marble?
Answer:
1 ÷ 6
Step-by-step explanation:
Let us assume the probability of the red marble for selecting it first time be x
And, it is to be done 3 times
that means
= 1 ÷ x × 1 ÷ x × 1 ÷ x
This equivalent to = 1 ÷ 216
And the 216 could be calculated by multiplied 6 3 times i.e.
= 6 × 6 × 6
= 216
So, the probability for selecting it for a first time is
= 1 ÷ 6
Venus Waldo reviewed her account statement and wanted to verify that the interest amount was correct. Her new balance was $12,098.12 and her previous balance was $9,043.20. She had deposited $3,298.45 and withdrawn $300.00. Find the interest earned on Venus' savings account.
Answer:
The interest on the savings account is $46.47
Step-by-step explanation:
Here, we want to know the interest earned on the savings account.
The difference between the new and previous balance will be; 12,098.12 - 9,053.20 = $3,044.92
The difference between amount deposited and amount withdrawn is 3,298.45 - 300 = 2,998.45
This is the amount that is supposed to be on the account without interest
So the interest earned would be; 3044.92 - 2,998.45 = $46.47
aida has 100 coins and 76 of them are nickels what percent of the coins are nickel
Answer: 80%
Step-by-step explanation:
Answer:
76%
Step-by-step explanation:
Because 76 out of 100 are nickels.
2,100 divided by 2? (explain the steps)
Answer:
1050
Step-by-step explanation:
1. divide using long division
put 2 outside and the 2100 inside
then from there 2 goes into 2 once so put that on top. Next 2 cant go into one so put a zero above the one. After that 2 goes into 10 5 times so put a 5 above the first zero in 2100. Lastly 2 goes into zero 0 times so put a zero above the second zero.
Answer:
Step-by-step explanation:
1055.5
how may times does 9 go into 81
Answer:
9*9=81 so 9 times...
Help meeeee!!!!!! Please
Answer:
-1/11
Step-by-step explanation:
if this is one of the answer choices.
-x+26 = 2x-10
please help!!
Answer:
x=-6
Step-by-step explanation:
Question from the lawyer: "Dr. Expert, I only see a 70° angle here, Exhibit A. Kelly said that having this angle means you have a plane. From what I see, none of the definition of a plane say that an angle defines a plane. Explain how each definition proves that an angle defines a plane."
14. Definition 1: Three points that are not collinear.
Proof:
15. Definition 2: A line and a point not lying on the line.
Proof:
16. Definition 3: Two lines which intersect
Proof:
I need help with the proof :)
Answer:
14. Three points tat are not collinear
Three points that are not colinear consist of a line and a third point, therefore, joining all three points form a flat figure having a length and a width which is a two-dimensional flat figure or a plane
15. A line and a point not lying on the line
Like the example above, the joining of the points results in a two dimensional figure having a length and a width also known as a planar surface
16. Two lines which intersect at a point
Given two lines that intersect at a point, joining the other end point of the two lines results in the forming of a flat figure, that can be described in two dimensions also known as a planar surface or plane
Step-by-step explanation:
A plane in mathematics is a flat surface that has only two dimensions and extends infinitely in all directions
A math class is having a discussion on how to determine if the expressions 4 x minus x + 5 and 8 minus 3 x minus 3 are equivalent using substitution. The class has suggested four different methods. Which describes the correct method? Both expressions should be evaluated with one value. If the final values of the expressions are both positive, then the two expressions must be equivalent. Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent. Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are positive, then the two expressions must be equivalent. Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.
Answer:
Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.Step-by-step explanation:
Given expressions
4x - x + 5 = 3x + 58 - 3x - 3 = -3x + 5Compared, we see the expressions are different as 3x and -3x have different coefficient
Answer options
Both expressions should be evaluated with one value. If the final values of the expressions are both positive, then the two expressions must be equivalent.
Incorrect. Positive outcome doesn't mean equivalent----------------------------------------
Both expressions should be evaluated with one value. If the final values of the expressions are the same, then the two expressions must be equivalent.
Incorrect. There are 2 values- variable and constant----------------------------------------
Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are positive, then the two expressions must be equivalent.
Incorrect. Positive outcome doesn't mean equivalent.----------------------------------------
Both expressions should be evaluated with two different values. If for each substituted value, the final values of the expressions are the same, then the two expressions must be equivalent.
Correct.Answer:
I was told by a man that it is b
Step-by-step explanation:
Three times a number plus two is equal to two times that same number plus 23
Which expression is equivalent to 4.8 + 2.2w - 1.4 w + 2.4
Answer:
Step-by-step explanation:
u have to combine like terms
7.2+0.8w B
Jerry bought 5 candy bars for $14.75. If the king size candy bars cost $3.75 and a regular size candy bar cost $1.75 , how many of each candy bar did he buy?
One equation looks like:
3.75x + 1.75y = 14.75
Find the other equation and solve the system.
Answer:
3=x 2=y
Step-by-step explanation:
x+y=5
y=5x
plug that in and redo it for x
you must write two sepreate equations
The scores on a statistics test had a mean of 81 and a standard deviation of 9. One student was absent on the test day and his score wasn't included in the calculation. If his score of 78 was added to the distribution of scores, what would happen to the mean and standard deviation?
A) Mean will increase, standard deviation will decrease.
B) Mean will increase, standard deviation will increase.
C) Mean will decrease, standard deviation will stay the same.
D) Mean will decrease, standard deviation will increase.
E) Mean will decrease, standard deviation will decrease.
Answer: E) Mean will decrease, standard deviation will decrease
Step-by-step explanation:
Initial mean = 81
Initial standard deviation = 9
New score = 78
Taking a look at the initial mean(averahe) score, which is 81 and the new score to be added to the initial scores, the initial average is greater than the new score. Hence, this will result in a decrease in the new mean score after adding the new score of 78.
Also, taking a look at the standard deviation which is 9, we can conclude that the variability in initial scores from the mean scores is high. However, the new score of 78 and the initial mean are very close, and tend to low variation. Hence, adding the new score will lead to a decrease in variability and hence a decrease in the value of standard deviation.
A particle travels in a circle around a fixed point at 16 revolutions per minute. The linear velocity of the particle is 240
inches per minute.
What is the distance, in inches, between the particle and the fixed point?
Answer:
15 inches
Step-by-step explanation:
We are given;
Linear velocity; V = 240 in/min
ω = 16 rev/min
Now, in circular motion, formula for linear velocity is;
V = ωr
Where ω is angular velocity and r is radius which is the distance between the object and the fixed point.
Thus;
240 = 16r
r = 240/16
r = 15 inches
Please answer asap!!!
Answer:
The triangles are realated because there the same size so the triangles are equal
Step-by-step explanation:soory if i did not help
Anthony wanted to get a job after school. His
neighbor said he would pay him $8.00 an hour for 4
hours a day to mow his lawn and rake the leaves.
How much would Anthony make in one day? *
I need help knowing if this is correct
Answer:
yes it does look right
Step-by-step explanation:
What is the equation here?
Giving Brainliest.
Answer:
for store a 260 + 20 times x and then store b 140 + 30 times x
Step-by-step explanation:
What slope is parallel to an “undefined slope”?
Answer:
It would be a perpendicular or anything on a y- axis
Step-by-step explanation:
because in this case the perpendicular would be the slope of a vertical line which would be undefined.
7. Which algebraic expression models the given word phrase? (1 point)
2 times the sum of a and b
a + b
2(a + b)
2(a - b)
2a + b
Help me solve this problem
Answer:
Step-by-step explanation:
3x - 7x -21 < -13
-4x < -13 + 21
-4x < 8
x > -2
[tex]3x - 7(x + 3) < -13 \\3x - 7x - 21 < -13 \\3x - 7x < -13 + 21 \\-4x < 8 \\x > -2[/tex]
Classify the number: -17.5 *
O Irrational
O Rational
Rational, Integer
O Rational, Integer, Whole
Answer:
I think it is either c or d
hopefully this helps
What are the three main functions in trigonometry? The __________________ is opposite the right angle. The __________________ side is opposite the (reference) angle. The __________________ side is next to the (reference) angle. Which two sides are interchangeable, depending on the reference angle? How does the phrase, SOHCAHTOA, help us remember the trig ratios?
Answer:
Please check explanation for answers
Step-by-step explanation:
1. the three main functions of trigonometry are;
The sine
The cosine
The tangent
2. The hypotenuse is opposite the right angle. The opposite side is opposite the reference angle. The adjacent side is next to the reference angle
3. The opposite and adjacent are the sides which are interchangeable depending on the reference angle.
4. SOHCAHTOA
SOH means ;
Sine = opposite/hypotenuse
CAH;
cosine = Adjacent/Hypotenuse
TOA;
Tangent = opposite/adjacent
Explain how can you find the amount of tomatoes that you can buy with $18.00
Answer:
if you can get the price of the tomatoes you can find out how many you can buy with $18
Step-by-step explanation:
Jeffrey runs at an average speed of 8 mph and he bikes at an average speed of 14 mph.After running x hours yesterday, Jeffrey biked 1.5 more hours than he ran. How far did he bike?
Answer:
14x+21
Step-by-step explanation:
Help me with this problem .
Answer:
c
Step-by-step explanation:
jj
Which equation represents a direct variation?
y = 0.5x
x - y = 5
XY = 5
y = x + 5