Step-by-step explanation:
-3x + 6y = 18
-3x = 6y+14
a) the slope of the 1st equation = -(-3)/6 = ½
b) the slope of the 1st equation = -3/6 = -½
c) they are niether parallel nor perpendicular
#1
-3x+6y=18-x+2y=62y=x+6y=x/2+3slope=1/2
#2
-3x=6y+146y=-3x-14y=-1/2x-7/3slope=-1/2
#3
Neither
True or false?
Two samples are selected from a population, and a treatment is administered to the samples. If both samples have the same mean and the same variance, you are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
True, two samples are selected from a population, and a treatment is administered to the samples. If both samples have the same mean and the same variance, you are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
What is the mean?The average of a group of variables is referred to as the mean in mathematics and statistics. There are several methods for calculating the mean, including simple arithmetic means (adding the numbers together and dividing the result by the number of observations), geometric means, and harmonic means.
Given:
Two samples are selected from a population, and a treatment is administered to the samples.
If both samples have the same mean and the same variance.
That means, they have the same t statistic.
A t-test compares the average values of two data sets and determines if they came from the same population.
You are more likely to find a significant treatment effect with a sample of n = 100 than with a sample of n = 4.
Because the value of t-test are same.
Therefore, the statement is true.
To learn more about the mean;
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Convert the expression 9 1/2 to a radical expression
Answer:
3
Step-by-step explanation:
9 1/2
(3^2) 1/2
3rd rule of multiplication
3^(2*1/2)
3^1 = 3
20.
Marlene made aprons to sell in her online store.
She paid $164.58 for supplies.
She charged $9.35 for each apron she sold.
Marlene sold 32 aprons. What was Marlene's profit in dollars
Enter your
Which of the following values are in the range of the function graphed below? Check all that apply.
A. -1
B. 2
C. 1
D. -6
E-2
Answer:-6 and -1
Step-by-step explanation:
Cal went to the store to buy half liter bottle of water . One bottom cost 3$ but he saw one liter bottle that cost 5$ what is the unit price of a half liter bottle and a one liter
Solve
| 2x + 6 | = x
Answer:
1) soln,
or,2x+6=x
or,2x-x= -6
or,x= -6
•°•x= -6 Ans#
Help me please I’m so confused ):
Which of the following statements is equivalent to 28 + 16?
14(2 + 2)
4(7 + 4)
4 + (24 + 12)
14(14 + 2)
Answer:
4(7+4)
Step-by-step explanation:
4×7=28
4×4=16
28+16
Answer:
4(7 + 4)
Step-by-step explanation:
28+16 = 44
4×11 = 44
Jenna bought a gallon of milk at the store for $3.58. About how much change did she receive from a $20 bill?
Hi! I'm happy to help!
When Jenna bought the milk, it deducted (subtracted) $3.58 from her $20. So, let's subtract that here:
20.00
- 3.58
We have to borrow:
19.9(10)
- 3.58
10-8=2
19.9(10)
- 3.58
. 2
9-5=4
19.9(10)
- 3.58
.42
9-3=6
19.9(10)
- 3.58
6.42
and 1-0=1
19.9(10)
- 3.58
$16.42
So, Jenna would receive $16.42 in change for her $20 bill.
I hope this was helpful, keep learning!
Find the area of a circle clock tower face if the circumference is 24pi units
Answer:
We will use the circumference formula to find the radius. Then the radius is 12. Now we will calculate the area of the the circle. Then the area of the circle is A= 144pi = 452.39 square units.
Step-by-step explanation:
HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! PLEASE FAST SUPER QUICK I GOT NO TIME ITS BEEN 2 HOURS IMAGE BELOW
According to the National Sleep Foundation, teenagers need about 9 hours of sleep each night to function at their best. Unfortunately, many teens do not get nearly this amount. Two samples of 100 teenagers were asked about the average number of hours they sleep each school night. The results are recorded in the table below.
< 4 4 - 6 6 - 8 8 - 10 10 +
Sample #1 2 9 39 44 6
Sample #2 1 12 34 48 5
Based on the results of the survey, which of the following inferences are valid?
Adults need less sleep than teenagers.
About half of teenagers get less than 8 hours of sleep each school night.
At least 10% of teenagers have sleep-related issues, such as depression, insomnia, and drowsiness during the day.
Half of teenagers get the recommended 9 1/4 hours of sleep each school night.
More than 90% of teenagers get between 4 and 10 hours of sleep each school night.
Answer:
About half of teenagers get less than 8 hours of sleep each school night.
Answer:
About half of teenagers get less than 8 hours of sleep each school night.
Step-by-step explanation:
Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.40.
After one month, Paul bought 19 passes and spent a total of $31.60.
How much did he spend on the student discount card?
Paul spent $________
on the student discount card.
Answer:
$5
Step-by-step explanation:
First, we need to find the total amount he spent on the passes.
We just need to multiply the number of passes by the price of each pass.
19 x 1.4 = 26.6
This means he spent $26.6 on the passes.
Now, we can find out how much he spent on the discount card.
Just subtract his total spending amount by the amount he spent on passes.
31.6 - 26.6 = 5
He spent $5 on the discount card.
please help if you can!
Step-by-step explanation:
[tex]a - 3c = \left(-\dfrac{2}{3}\right) - 3\left(\dfrac{4}{5}\right)[/tex]
[tex]\:\:\:\:\:\:\:=-\dfrac{2}{3} - \dfrac{12}{5} = -\dfrac{46}{15}[/tex]
Determine what value(s) for the variable would make each algebraic
equation a true number sentence.
�2 = 81 is true for ____________________.
6� = 3� + 2� + � is true for ____________________.
� + 74 = � − 74 is true for ____________________.
Answer:
k calculate it how u see it
Which is equivalent to log2^n=4?
Answer:
D
Step-by-step explanation:
Nick makes $120,000 a year selling stocks. If he loses 33% to taxes, what does he make EACH
WEEK? *
a.$3960
b.$80,400
c.$761.50
d.$1546.15
Answer:
I think it would be 80,400
On August 10, 1936, a temperature of 120ºF. was recorded un Ponds, Arkansas. On Febrery 13, 1905, Ozark, Arkansas, recorded a temperature of -29ºF. What is the difference between these two temperatures?
Answer:
47
Step-by-step explanation:
Answer:
is this cold for - Febrery for August this 120 F
Step-by-step explanation:
STUCK/ PLS HELP GIVING BRAINLIEST AND POINTS
the answer will be 50.9°
just do the inverse of the tangent function since you're given an opposite side and an adjacent side.
Answer:
50.9°
all explanation needed to solve the question is given in the page
Identify the statement as an expression or an equation.
3(4x - 12)
2
4(x - 3)
Answer:
expression
Step-by-step explanation:
An expression is a number, a variable, or a combination of numbers and variables and operation symbols. An equation is made up of two expressions connected by an equal sign.
Lawrence's check at Fresh Catchery is $23.09. In order to leave a 13% tip, how much should he pay? Round to the nearest cent.
Answer:3
Step-by-step explanation: 23.09 * 0.13 =3 rounded up
which is better estimate for the volume of a tube of toothpaste 6 tablespoon 6 cups?
Answer:
6 tablespoons
Step-by-step explanation:
It's more logical because tubes of toothpaste do not require such a large amount of toothpaste. Look at your toothpaste tube. I'm sure that it is closer to 6 tablespoons rather than 6 cups.
PLEASE HELP 70 POINTS
Answer:
-1 = -5
0 = -1
2 = 5
Step-by-step explanation:
In order to do this you need to follow these five (5) steps:
1) Know what each of the variables mean in an equation of a line. The equation of a line is y = mx + b where y = y-coordinate, m = slope, x = x-coordinate, and b = y-intercept. (Remember that the slope is the steepness of a line and the y-intercept is the point where the line intersects the y-axis. The x- and y-coordinates are values of the points on the line of y = 3x - 1.)
2) Identify the m (slope) and the b (y-intercept). The slope is 3, which can also be written as 3/1. The y-intercept is -1. (Remember that subtraction of 1 is the SAME thing as adding -1!) Since the y-intercept is a point it will be plotted at (0, -1).
3) Plot the y-intercept first. Start at the origin (intersection of the x- and y-axes) since the x coordinate is 0. Then move DOWN 1 unit since the y-coordinate is negative.
4) Use the m (slope) to plot at least three new points. The slope can also be represented as "rise/run" or the amount of units that you move UP or DOWN (vertically), then LEFT or RIGHT (horizontally). (Remember: if the numerator is positive (move UP); numerator is negative (move DOWN); denominator is POSITIVE (move RIGHT); denominator is NEGATIVE (move LEFT)). Since our slope is 3/1, and both the numerator and denominator are POSITIVE, that means we will be "rising" (moving UP) 3 units and "running" (moving RIGHT) 1 unit.
Start at the y-intercept of (0, -1) and move up 3 units and to the right 1 unit. You should be at (1, 2). Plot a point here. Then do it again. You should now be at (2, 5). Plot another point. Now, do it one more time. You should now be at (3, 8). Plot your last point. (If you wish to continue plotting additional points, feel free to do so.)
Answer:
Given line:
y = 3x - 1The table has x-values and asks to find f(x) for each x.
f(x) is same as y, plug in x- values to get f(x):
x = - 1 ⇒ f(-1) = 3(-1) - 1 = -3 - 1 = - 4x = 0 ⇒ f(0) = 3(0) - 1 = 0 - 1 = - 1x = 2 ⇒ f(2) = 3(2) - 1 = 6 - 1 = 5A lion paced up and down the ridge 10 times. The ridge is 5 ft. 3 in. long. How far did the lion travel? (12 in.=1 ft.)
Answer:
105 ft.
Step-by-step explanation:
5 x 12 = 60
So 5 feet is 60 inches.
60 + 3 = 63
That makes the ridge 63 inches long.
When the lion went up the ridge, it traveled 63 inches.
When the lion went back down the ridge, it traveled another 63 inches, totaling 126 inches.
The lion did this 10 times.
126 x 10 = 1260
Divide 1260 by 12 to find the measurement in feet.
1260 ÷ 12 = 105
Last month a factory produced 880 television sets. This month the the same factory produced 1210 television sets. The increase percentage in production from last month to this month is
Answer:
330ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
Your bill for lunch was $54.70. The service was very good so you decide to tip the server 20%. You do not have anything with you to help you calculate the tip. How much would you estimate is a 20% tip on a bill of $ 54.70?
Answer:
$11
Step-by-step explanation:
20% is fifth part of 100%
$54.70 ÷ 5 ≈ $55 ÷ 5 = $11
Picture provided above please help if can !
Answer:
10.1
Step-by-step explanation:
I just put in a calculator and got the answer.
True or False: The correct answer to a numeric entry field will automatically be populated in the correct field after you open the explanations.
Although your question is vague a general answer within the concept of your of your question is provided. The correct answer to a numeric entry field will be automatically populated after the explanation is open ( i.e. True is the correct answer )
When you open up the explanations to a correct answer the entry field for the answer will automatically be populated with the correct answer, because by selecting/clicking on the explanation you will be granted access to the answer behind the explanation as well. also another way to access the correct answer is to simply select the entry field
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I’ll mark u as brainliest!! solve these two equations n show ya work !!
Hope it helps... Mark me brainliest
Find the inverse of the function: f(x)=1/5x+4
A f−1(x)=x−4
B f−1(x)=5x−20
C f−1(x)=−5x−4
D f−1(x)=4x−5
Answer:
B. [tex] {f}^{ - 1} (x) = 5x - 20[/tex]
Step-by-step explanation:
[tex]f(x) = \frac{1}{5} x + 4[/tex]
[tex]y = \frac{1}{5} x + 4[/tex]
[tex]x = \frac{1}{5} y + 4[/tex]
[tex] \frac{1}{5} y + 4 = x[/tex]
[tex]y + 20 = 5x[/tex]
[tex]y = 5x - 20[/tex]
[tex] \boxed{\green{{f}^{ - 1} (x) = 5x - 20}}[/tex]
HELP WILL GIVE BRAINLIEST
