Answer:
-36
-3y
Step-by-step explanation:
F
Answer:
(4,-7)
Step-by-step explanation:
y=4x-9
y+3=x
y=4(y+3)-9
y=4y+12+9
y=4y+21
y-4y=21
-3y=21
y=-7
Now use y to find x
y+3=x
-7+3=4
x=4
need help with this please
Answer:
ok
Step-by-step explanation:
...............................................................
Answer:
I can't relly see can you take a cloeser pick
Numbers like 10,100,1,000, and so on are called?
Answer:
They are called powers of ten
Step-by-step explanation:
can someone help me it is math please I will mark brainlist
Answer:
The difference of a number and seven → n - 7The sum of seven and a number → n + 7The product of seven and a number→ 7nThe quotient of a number and seven → [tex]\frac{n}{7}[/tex]Step-by-step explanation:
Difference = subtraction, so the difference of a number and seven is n - 7Sum = addition, so the sum of seven and a number is n + 7Product = multiplication, so the product of seven and a number is 7nQuotient = division, so the quotient of a number and seven is [tex]\frac{n}{7}[/tex]I hope this helps!
Answer:
1 goes to n-7
2 goes to n+7
3 goes to 7n
4 goes to n/7
Step-by-step explanation:
A professor is interested in comparing the characteristics of students who do and do not vote in elections. For a random sample of 114 students who claimed to have voted in the last presidential election, she found a mean CPA of 2.71 and a standard deviation of 0.64. For an independent sample of 123 students who did not vote, the mean CPA was 2.79 and the standard deviation was 0.56. Test at the 5% level of significance if the mean CPA of all students who vote is lower than the CPA of students who do not vote.
Answer:
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to conclude that the mean CPA of all students who vote is lower than the CPA of students who do not vote
Step-by-step explanation:
From the question we are told that
The first sample size is [tex]n_1 = 114[/tex]
The sample mean is [tex]\= x_1 = 2.71[/tex]
The standard deviation is [tex]s_1 = 0.64[/tex]
The second sample size is [tex]n_2 = 123 [/tex]
The sample mean is [tex]\= x_2 = 2.79[/tex]
The level of significance is [tex]\alpha = 0.05[/tex]
The standard deviation is [tex]s_2 = 0.56 [/tex]
The null hypothesis is [tex]H_o : \mu_1 = \mu _2[/tex]
The alternative hypothesis is [tex]H_a : \mu_1 < \mu_2[/tex]
Generally the test hypothesis is mathematically represented as
[tex]t = \frac{\= x_1 - \= x_2}{ \sqrt{ \frac{s_1^2 }{n_1} + \frac{s_2^2}{n_2} } }[/tex]
=> [tex]t = \frac{2.71 - 2.79}{ \sqrt{ \frac{0.64^2 }{ 114} + \frac{0.56^2}{123} } }[/tex]
=> [tex]t = -1.01 [/tex]
Generally given that variance are not equal (the standard deviation squared of both population are not equal ) the degree of freedom is mathematically represented as
[tex]df = \frac{[\frac{s_1^2}{n_1 } + \frac{s_2^2}{n_2} ]}{\frac{[\frac{s_1^2}{n_1}]^2 }{n_1 - 1} + \frac{[\frac{s_2^2}{n_2}]^2 }{n_2 - 1}}[/tex]
=> [tex]df = \frac{[\frac{0.64^2}{114} + \frac{0.56^2}{123} ]}{\frac{[\frac{0.64^2}{114}]^2 }{114 - 1} + \frac{[\frac{0.56^2}{123}]^2 }{123 - 1}}[/tex]
=> [tex]df = 225[/tex]
Generally from the t distribution table the the probability of (t < -1.01) at a degree of freedom of [tex]df = 225[/tex]is
[tex] p-value = P(t < -1.01 ) = 0.15679[/tex]
Generally the value obtained we see that [tex]p-value > \alpha[/tex] so
The decision rule is
Fail to reject the null hypothesis
The conclusion is
There is no sufficient evidence to conclude that the mean CPA of all students who vote is lower than the CPA of students who do not vote
Triangle BIG is similar to triangle MOP . Find v .
Answer:
63:42
so this is
3:2
[tex] \frac{33}{3} = \frac{v}{2} [/tex]
[tex]v = \frac{2 \times 33}{3} = \frac{66}{3} = 22[/tex]
v=22
The value of v should be considered as the 22 when the Triangle BIG is similar to triangle MOP.
Calculation of the value of v:Since as per both the figures we can write the ratio like 63:42 so it can be like 3:2
So the calculation could be done below
[tex]33 \div 3 = v \div 2\\\\v = 2 \times 33 \div 3\\\\= 66 \div 3[/tex]
= 22
Hence, The value of v should be considered as the 22 when the Triangle BIG is similar to triangle MOP.
Learn more about triangle here: https://brainly.com/question/9721655
Can someone help me to do this cause i don’t know what to do
Answer:
ohh
Step-by-step explanation:
77 is 0.7% of what number?
Answer:
0.7% of 77 = 0.54 0.7%
Step-by-step explanation:
hope this helps
PRACTICE ANOTHER Is 4a a factor of 2a · 38b? (Assume that a and b represent integers.) Yes, because 4 is a multiple of 38. Yes, because 2a · 38b = 4a · 19b where 4a and 19b are integers because a and b are integers and products of integers are integers. Yes, because 4a is a divisor of 38b. No, because 38 is not a divisor of 4. No, because 2a · 38b = 4a · 19b where 4a and 19b are not necessarily integers because products of integers are not always integers.
Answer:
Yes, [tex]2a . 38b = 4a . 19b[/tex]
Step-by-step explanation:
Given
[tex]Expression: 2a.38b[/tex]
Required
Is 4a a factor of the expression?
Analyzing each option.
1.
[tex]2a . 38b = 4a . 19b[/tex]
[tex]76ab = 76ab[/tex]
The above expression is true.
Hence: This option answers the question
Question 2 (4 points)
A student rolled two six-sided dice. what is the probability that the first die landed
on a number less than 3 and the second die landed on a number greater than 3?
Answer:
Step-by-step explanation:
kyle has 105 baseball cards and must give 2/5 of his cards away. how many cards will kyle give away? what fraction of his cards does he have left?
What is the slope of the line shown below? 1/6 -5/-7
Answer: C. 13/6
Step-by-step explanation:
The slope is always rise over run. So when going from the coordinate (-5,-7) to the coordinate (1,6) we go up 13 then go to the right 6. And since we went up and to the right it is a positive slope.
Which expression represents 7 less than a number
Answer:
Step-by-step explanation:
x-7=18 because x would be the number with "7 less" being the "-7."
The following list has a mean of 24. What would be the new mean if 17 was added to the list? 12,30,19,27,21,35
Answer:
23
Step-by-step explanation:
Answer:
The new mean should be 23.
Step-by-step explanation:
The mean of a group of numbers is the average.
We can find the average of a group of numbers by adding them all together and then dividing the final sum by the amount of numbers in the list.
All the numbers added together totaled to 161, and 161 divided by 7 equals 23.
Hope this helps!
If a polygon is a pentagon, then it has 5 sides hypothesis conclusion
Answer:
Hypothesis
Step-by-step explanation:
a polygon has five sides Conclusion: it is a pentagon If a polygon has five sides, then it is a pentagon.
hope this helps
This coordinate grid shows where Alberto's school is located. Each unit represents one block. Alberto's house is at (3,4). The library is located at the reflection of (3,4) across the y-axis.
PART A
What are the coordinates of the library?Explain how you know.
PART B
not needed
PART C
Use absolute value to find the distances from Albertos house to the school and from Albertos house to the library.
Answer:
Part A) -3, 4 Part C) 12 i think
Step-by-step explanation:
Answer:
Part A-(3,4)
Part B- 2 units
Step-by-step explanation:
Part A- (x,y)--->(-x,y)
In the number 789.466 the digit in the hundredths place is______ the value of the digit in the thousandths place?
Answer:
hundredths --> 6
thousandths value --> 0.006
Step-by-step explanation:
hundredths is the value two places to the right of the decimal point, which is currently 6.
The value of the digit in the thousandths place, which is 3 places to the right of the decimal place, is 6, but the value of the 6 is actually 0.006, because it is in the thousandths place, just like 700 would be the value of the digit in the hundreds place.
Plz help
(5x)2 square = X2square
Answer:
± 25
Step-by-step explanation:
I need to find what the square root is to 19,478,730. my teacher literally put that. help
Answer: 4413.5
Step-by-step explanation:
4413.47142 if you need to be exact
The sum of three consecutive odd numbers is 297, what are they? Create an equation and solve.
Answer:
98 + 99 + 100 = 297
Step-by-step explanation:
Determine whether a statement is True or False. If it is False, provide an explanation or give an example:
Complete Question:
Determine whether the statement is true or false. If it is false, provide an explanation or give an example.
If f is decreasing on [a,b] then the minimum value of f(x) on [a,b] is f(a)?
Answer:
False
Step-by-step explanation:
Given
[a,b]
Where f(x) is decreasing
Required
Is the minimum f(a)?
This statement is false and it is proved using the following illustration
Take f(x) to be
[tex]f(x) = -2x[/tex]
The above represents a decreasing function because:
f(x) decreases as x increases
Having said that:
Assume [a,b] is:
[tex][a,b] = [2,5][/tex]
Substitute the value of a i.e. 2 for x in f(x)
[tex]f(2) = -2 * 2[/tex]
[tex]f(2) = -4[/tex]
Substitute the value of b i.e. 5 for x in f(x)
[tex]f(5) = -2 * 5[/tex]
[tex]f(5) = -10[/tex]
Notice that f(b) < f(a) i.e. -10 is less than -4
Hence:
f(x) is minimum at f(b)
Conclusively, the statement is false
Business Loss A company loses $40 as a result of a shipping delay. The 2 owners of the company
must share the loss equally. Write an expression for the earnings per person. Evaluate the
expression.
Write an expression for the earnings per person. Choose the correct answer below.
+
OA. - 2+(-40)
OB. 2+(-40)
OC. 40+ (-2)
OD. - 40 + 2
Answer:
b
Step-by-step explanation:
Umm i need help and i forgot to put the picture da first time so yeaa
Answer:
75 14 12,600 781 128 399 26.13 40.80 12,750
Step-by-step explanation:
Hope this helps
Answer:
7. 100
8. 14
9. 12600
10. 639
11. 128
12. 399
13. Discount price= 12.87 Sale price= 26.13
14. 40.80
15. 12,750
I'm not 100% on #15 but the rest are good.
Step-by-step explanation: When you multiply the percent by the other number that gives you the difference. So then get the original number and either add or subtract the difference from the original number to get your answer. Add if increase Subtract if decrease.
So 7-11 you just have to multiply the percent by the other number.
7. 25*300% or 25*3 = 75 25 + 75 = 100
8. 56*.75 = 42 56-42= 14
9. 12000*.05 = 600 (since it is an increase add 600 to 12000) = 12600
10. 710*.10= 71 (71 is the difference so do this) 710-71= 639
11. 160*.20 = 32 (decrease) 160-32= 128
12. 380*.05=19 (increase) 380+19 = 399
13. 39*.33= 12.87 (decrease)
Discount price = 12.87
Sale price= 39-12.87= 26.13
14. 48*.15 = 7.20 (decrease) 48-7.20= 40.80
15. 3,000*3.25 = 9750 (increase) 9750 + 3000= 12,750
Question 1 of 3 NE A scale drawing of a fishing boat has a scale of 1 cmn to 2 meters. If the length of the fishing boat is 6 cm on the scale drawing, what is the actual length of the fishing boat?
Answer:
12 meters
Step-by-step explanation:
Given
[tex]Scale= 1cm:2m[/tex]
Required
Determine the measurement when the scale reads 6cm
Represent this scale with x;
Such that:
[tex]Scale = 6cm:x[/tex]
Equate
[tex]Scale= 1cm:2m[/tex] and [tex]Scale = 6cm:x[/tex]
[tex]1cm:2m = 6cm:x[/tex]
Express as fraction
[tex]\frac{1cm}{2m} = \frac{6cm}{x}[/tex]
Cross Multiply
[tex]x * 1cm = 6cm * 2m[/tex]
[tex]x * 1 = 6 * 2m[/tex]
[tex]x = 6 * 2m[/tex]
[tex]x = 12m[/tex]
HURRY ON A TIMER PLEASE HELP
which shows all the like terms in the expression
Answer:
the second one -3and1 :4x and 7x
Step-by-step explanation:
Answer:
-3 and -1; 4x and 7x
Step-by-step explanation:
like terms are the numbers with the same variable
eg. 4x^2 and 6x aren't like terms, but 2x^4 and 3x^4 are
question 5 i mark as brainliest
Answer:
5,129
Step-by-step explanation:
Answer:
C. 5129
Step-by-step explanation:
5.129 x [tex]10^{3}[/tex]
you will move the decimal to the right 3 times.
2x + 7 = 13
Please help
Answer:
x=3
Step-by-step explanation:
Hope this helps u..
What is 2/3 x 3/4 please help
Answer:
1/2
Step-by-step explanation:
3-2/7 divided by 1-1/4
What Is f(0) ?
Choices
12 only
2 and 3 only
-2, -1, 1, and 2 only
-2, -1, 1 2 and 12
Answer:
12 only
Step-by-step explanation:
It means x is zero, and the only point on x=0 is 12 :)
According to the graph the function f(0) is 12 only .
What is intercepts?The x-intercept is the point where a line crosses the x-axis or at y = 0, and the y-intercept is the point where a line crosses the y-axis or at x =0.
According to the question
The graph shows the function in which
f(0) is
i.e
x = 0 or y intercept
Now, according to the graph
at x = 0 , y = 12
Or
f(0) = 12
Hence, The function f(0) is 12 only .
To know more about intercepts here:
https://brainly.com/question/14180189
#SPJ3
Using the model of 3.33, how dose the 3 in the one place compare to the 3 in the place to its right
Answer:
The 3 in the tens place is worth 10 times the 3 in the ones places.
Step-by-step explanation:
Have a great day :)