Step-by-step explanation:
hope it helps............
is x = -3 a solution for the following equation: 6x - 19 = 3x - 10? Be sure to show work.
Answer:
x=-3 is not a solution
Step-by-step explanation:
well, lets plug it and and see!
6(-3)-19=3(-3)-10
-18-19=-9-10
-37=-19
-37 DOES NOT equal -19.
so x=-3 is not a solution
hope this helped! :)
Enzo and Zahra are playing a game. Their scores for five games are shown in the table below.
Enzo’s and Zahra’s Scores
Enzo’s Scores
39
47
46
50
38
Zahra’s Scores
37
33
45
30
45
Enzo’s mean score is 44. Zahra’s mean score is 38. How much greater is the mean absolute deviation for Zahra's scores than for Enzo's scores?
1.2
4.4
5.6
6.0
Answer:
1.2 A
Step-by-step explanation:
Answer:
1.2
Step-by-step explanation:
The American Water Works Association reports that the per capita water use in a single-family home is 76 gallons per day. Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-seven owners responded, and the sample mean water use per day was 71 gallons with a standard deviation of 9.5 gallons per day. At the 0.01 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average
Answer:
Yes, that is enough statistical evidence to suggest to conclude that residents of Legacy Ranch use less water on average
Step-by-step explanation:
The data given by the American Water Works Association are;
The per capita water use in a single-family home, μ = 76 gallons per day
The number of responders in the sample, n = 27
The sample mean water used by the sample, [tex]\overline x[/tex] = 71 gallons
The standard deviation, s = 9.5 gallons per day
The level of significance, α = 0.01
The test statistics is given as follows;
The null hypothesis, H₀; μ ≥ 76 gallons
The alternative hypothesis, Hₐ; μ < 76 gallons
[tex]t=\dfrac{\bar{x}-\mu }{\dfrac{s}{\sqrt{n}}}[/tex]
Therefore, we have;
[tex]t=\dfrac{71-76 }{\dfrac{9.5}{\sqrt{27}}} \approx -2.734817[/tex]
At n - 1 = 27 - 1 = 26 degrees of freedom, the critical-t = 2.5
From the test statistic, of t ≈ -2.734817, the p-value < 0.01, and from a graphing calculator, the p-value is given as Prob = 0.005544418
Therefore, given that the p-value is less the significant level, and less than 0.01, is therefore statistically significant, and therefore, there is sufficient statistical evidence against the null hypothesis, therefore we reject the null hypothesis, and there is enough statistical evidence to suggest to conclude that residents of Legacy Ranch use less water on average.
Solve for x. 3.8 + 4.5x - 1.4 = 8.25
Answer:
x = 1.3
Step-by-step explanation:
Eliminate fractions first. Multiply all four terms by 100. The result will be:
380 + 450x - 140 = 825
Combine like terms:
240 + 450x = 825, or
585 = 450x, or:
x = 1.3
A bouncy ball is dropped such that the height of its first bounce is 5.5 feet and each successive bounce is 60% of the previous bounce's height. What would be the height of the 6th bounce of the ball? Round to the nearest tenth (if necessary).
Answer: 0.4
Step-by-step explanation:
If the height of the first bounce is 5.5, then you find what 60% of 5.5 is and to do that you do 60/100 and x/5.5 so cross multiply 60x5.5 to get 330 then divide by 100 to get 3.3 and you do that 5 more times to get 0.42768 which when rounded to the tenths place, gets you 0.4
Please help.. not really understanding this
Answer:
(-4,5)
Step-by-step explanation:
use elimination method to solve
x+2y=6
3x+4y=32
make the x coefficient to be equal by multiplying the x by 3
3x+6y=18
-3x+4y=32
since the signs for the z coefficient are different than you add 3x+-3x=0
6y+4y=10y
18+32=50
10y=50
y=5
if y is equal to 5 then substitute
x+(2*5)=6
x+10=6
x=-4
(-4,5)
Please help I have been stuck for a while
Answer:
B. 50 degrees
Step-by-step explanation:
I am not 100% sure and if this is a right triangle, then it's measure is 90 degrees. So, 140 degrees minus 90 degrees would total, 50 degrees.
Answer:
B: 50 degrees
Step-by-step explanation:
You first find the other angles of the triangle. One is 90 degrees at the corner. The other would be 40 because the outside angle is 140 and that is 40 away from 80. Add 40 and 90 together to get 130 degrees. Subtract that from 180 and that is 50 degrees :)
Hope this helps!
I WILL GIVE BRAINLIEST!!!
The average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below.
Number of Years Since 2010 Avg. Number of Subscribers
0 320,000
1 384,000
2 460,800
3 552,960
4 663,552
5 769,262
The percent increase in the average number of subscribers each year since 2010 was ____%.
Answer:
the average number of subscribers to the online magazine in 2010 was 320,000
(easy practice ) 6/8 divided by 2/3
Answer:
9/8
Step-by-step explanation:
When dividing by fractions, you take the first number and multiply it by the reciprocal of the second number.
so in this case, 6/8 times 3/2
18/16
9/8
Which of the following units are most commonly used in the United States?
Check all that apply.
A. Meters
WIB. Gram
UN C. Miles
1 D. Pounds (lbs.)
PREVIOUS
Answer:
The answer is D.
Step-by-step explanation:
What is the base, perimeter of base, and height of this figure? No links pls or I will report u!
r= 26, h = 16, S = ?
Answer:
S = 6
I think
Answer:
s=6
Step-by-step explanation:
if you are figuering it out in order then r=26 then you subtract 10 and get h=16 so then you subtract 6 more and get s=6
I WILL GIVE BRAINLIEST PLEASE ANSWER ASAP
Which equation can be used to solve for x in the following diagram?
A) 3x + (8x - 20) = 90
B) 3x = (8x - 20)
C) 3x + 90 = (8x - 20)
D) 3x + (8x - 20) = 180
Answer:
Step-by-step explanation:
It’s c
Solve the following system x+y=376 4x+7y=2119
Answer:
x= 171 y=205
(171,205)
Please answer I will mark you Brainliest
Answer:
The third one
Step-by-step explanation:
if its not that one then its the first one
Answer:
D
Step-by-step explanation:
8 * 5 * 11 = 440
Pls help meee!!! And thank you sooo much
Answer:
The answer is (3, -3)
Step-by-step explanation:
Translating it down means subtracting from the second value, or the y value. 0 - 3 = -3. You keep the x value the same.
Answer:
C(3, -3).
Step-by-step explanation:
When it is translated down, the y-coordinate changes.
Subtract 3 from the y-coordinate.
C(3, 0) becomes C(3, -3).
which is greater -111 or -1111
For each number, name its opposite. a. -5 b. 28 c. -10.4 d. 0.875 e. 0 f. -8,003
answer as soon as possible
Answer:
5, -28, 10.4, -.875, 0, 8003
Step-by-step explanation:
Jason divides his first 1/2 mile of the trail into 3 sections. He puts a sign at the end of each section. If the signs are an equal distance apart, what is the distance between the second and third signs?
Answer:
1/6 mile
Step-by-step explanation:
Distance divided = 1/2 miles
No of sections = 3
Each division must equal = 1/2/3
= 1/2*1/3 = 1/6 mile.
The distance between each of the signs i.e between the first and second , second and third is 1/6 of the mile.
This can be done in decimals as well
1/2 mile= 0.5 mile.
When we divide 0.5 mile by 3 we get 0.167 which is equal to 1/6 in fractions.
Guys I need help on this please
Answer:
The correct answer should be the first option.
Step-by-step explanation:
Answer:
First option. The graphs domain is -∞<x<∞ and its range is -5 ≤ y < ∞
Step-by-step explanation:
I graphed this function
Domain: x ∈ R
Range: y ∈ [-5, + ∞
Minimum (1, -5)
Verticle intercept (0, -4)
PLEASE HELP MEEEEEE!!! BRAINLIEST WILL BE GIVEN! NO LINKS!
Answer:
Step-by-step explanation:
it's like this Loving , 62.90 / 330 = 0.1906...
so she paying about 19 cents per mile :)
Layla calculates the mean of the ages of 10 students on her bus, and she discovers the average(mean) age is 12.8. What will happen to the mean if she includes her bus driver's age of 56 in her data set? *
A.The mean will stay the same.
B.The mean will decrease.
C.The mean will increase.
D.There isn't enough information.
Answer:
The mean will increase
Step-by-step explanation:
Will mark brainliest! Please help me with this math! No links or trolls please. :)
Answer:
m∠A≈ 36
m∠B≈ 55
c≈ 25.8
Step-by-step explanation:
i hope this helps you :)
Help me!!!!!!!!!!!!!!!!
Answer:
4(3+x)
Step-by-step explanation:
12+4x = 4(3+x)
The polygons in each pair are similar. Find the scale factor of the smaller figure to the
larger figure.
A.2:3
B.5:7
C.1:5
D.6:7
Answer:
1 : 5
Step-by-step explanation:
The scale factor is the ratio of corresponding sides, smaller to larger, then
3 : 15 = 1 : 5
And pleaseee This too
Answer:
the correct option is 75
Step-by-step explanation:
The standard notation for how to write tables is in the next way.
[tex]\left[\begin{array}{ccc}inpt&outpt\\x_1&y_1\\x_2&x_2\end{array}\right][/tex]
Where the input values are represented in the x-axis (the horizontal one) and the output values are on the y-axis (the vertical one).
In this case, we want to find the number of (x-value) for the height of 250.
Then we need to look at the vertical axis and find the value y = 250.
Now let's move to the right until you meet with the point.
Once you reach the point, move down to the axis, the value at which you intersect the axis is the x-value.
We can see that the point is on the middle of the x-values:
x = 70 and x = 80
Then the x-value of the point is x = 75
This means that the correct option is 75
help me out here? (check the attached image if you're somewhat good at geometry)
Answer:
14
Step-by-step explanation:
you just look at how much everything equals and that it is adding by 2
can someone help me and work it out plzzzz
9514 1404 393
Answer:
(c) x ≥ 0(d) reals ≥ 2Step-by-step explanation:
The square root is only defined for arguments that are greater than or equal to zero.
√x . . . . defined for x ≥ 0
It will only have non-negative values.
√x . . . . has values ≥ 0
Using these facts, we can answer the questions.
__
1. The domain is the set of values x may have. The square root function limits the domain to x ≥ 0.
__
2. The range is the set of values y may have. The square root function is never negative, so the range must be 2 or greater.
y ≥ 2
PLEASE THIS IS MY LAST QUESTION AND I NEED HELP!!!
Answer:
x+23
Step-by-step explanation:
3x+18-2x+5
3x-2x=x
18+5=23
x+23
How do I solve this? I need step by steps, please.
Answer:
sorry i didn't know it
i tried i got the 3 one but ¨i'm not sure¨