because it is a good answer
5-(-3.8) + 1.5
I don't understand how to work problems like this
the average of nadine's six test is 77. The scores on the five of the test are 88,65,75,83 and 90. what is the score on the remaining test?
A. 91
B. 81
C. 71
D. 61
Answer:
The score on the remaining test is x = 61
Hence, option D is correct.
Step-by-step explanation:
Let 'x' be the score of the remaining test
The average score of Nadine's six tests = 77
so
Average score = (88+65+75+83+90+x) / 6
substituting average score = 77 in the equation to find 'x'
77 = (401 + x) / 6
401 + x = 77 × 6
x = 462 - 401
x = 61
Therefore, the score on the remaining test is x = 61
Hence, option D is correct.
Please help it's almost due will mark brainliest (only question 13)
Answer:
I got x = 0
Step-by-step explanation:
y = (47/2)x Substitute y =0
0 = (47/2) x Multiply both side
0 = x Swap the sides
x = 0
Factorize: Challenge problem:
x^2+19x+78
help :)
Answer:
(x + 6)(x + 13)
Step-by-step explanation:
Given
x² + 19x + 78
Consider the factors of the constant term (+ 78) whuch sum to give the coefficient of the x- term (+ 19)
The factors are + 6 and + 13 , since
6 ×13 = + 78 and 6 + 13 = + 19 , then
x² + 19x + 78 = (x + 6)(x + 13) ← in factored form
[tex]\bold{ x^2+19x+78 }[/tex]
[tex]\bold{ x^2+13x+6x+78 }[/tex]
[tex]\bold{ x(x+13)+6(x+13) }[/tex]
[tex]\bold{(x+6)(x+13) }[/tex]
What is the answer to this
Answer:
x = - 1
Step-by-step explanation:
Given
- 5x - 16 = 9x + x - 1, that is
- 5x - 16 = 10x - 1 ( subtract 10x from both sides )
- 15x - 16 = - 1 ( add 16 to both sides )
- 15x = 15 ( divide both sides by - 15 )
x = - 1
The function f(x) is graphed. It represents a translation of the square root function y = .
What equation represents the graph of f(x)?
y =
y =
y = – 2
y = + 2
Answer:
y = sqrt x-2
or c on edge
Step-by-step explanation:
Need help with 2 and 5 pleaseeee!!
Answer:
Question 2: √x
Question 5: B and D
Step-by-step explanation:
If you move a factor from the denominator to the numberator (or vice versa) its exponent must flip sign.
I.e., [tex]\frac{1}{x^{-1}}[/tex] will become [tex]\frac{x^1}{1}}[/tex] which is x
Multiplying the same number x you must add the exponents. (1/3)+(1/3)+(1/3) is 1, so D is also x¹.
Therefore B and D are equivalent.
PLEASE HELP ITS MULTIPLE CHOICE i’ll mark brainliest too!!
Step-by-step explanation:
For the left end of the function, it moves up towards positive infinity.
For the right end of the function, it movea down towarda negative infinity.
Therefore as x approaches -infinity, y approaches +infinity and as x approaches +infinity, y approaches negative infinity. (2nd option)
ALMOST DONE MORE HELP MORE POINTS
Answer: I’ll try my best, I believe the ansr is B
Step-by-step explanation:
IF THIS ISNT RIGHT IM SO VERY SRRY!
Answer:
The answer is either C or B. I really tried my best and I hope you get it right! :)
Have a nice day! :) :)
Apply the distributive property to convert the expression to the greatest common factor multiplied by a term in parenthesis.
36a+9=
40+50d=
28-7f=
Answer:
9(4a+1)=
10(4+5d)=
7(4-f)=
Step-By-Step Solution:
The greatest common factor is the largest number that both numbers can be divided by. For example, in #1, 36 and 9 can both be divided by 9 to become 4 and 1.
SMART PPL PLEASE help meeeeeeeeeeeeeee
Answer:
the amount of calories depends on the minutes of exercise so c is the dependent variable and m is the independent variable
34 divided by 523.6
Answer plz
Answer:
0.0649350649350649
Step-by-step explanation:
Answer: 0.06493506493
Step-by-step explanation:
f(x)=4(0.5)^-1
Find the y value
Answer: y = 0.5x - 4
Step-by-step explanation:
Answer:
y=8
Step-by-step explanation:
In functions, you should know that f(x)=y. In this problem, y is replaced by 4(0.5)^-1. So all you need to do is solve what 4(0.5)^-1 is, which is 8. This means that f(x)=8, but y is also equal to f(x). The answer is then y=8.
Hope you understand and that this helps with your question! :)
n order to test the null hypothesis of equal means (alternative hypothesis says they are unequal), two simple random samples are obtained.In sample 1, the mean and standard deviation are 10 and 6 respectively.In sample 2, the mean and standard deviation are 16 and 4 respectively.Each sample is of size 6.The data are normally distributed.The true standard deviations of the two populations may be assumed to be equal.What can you say about the P-value for the test of equal means? --> It must be
Complete Question
In order to test the null hypothesis of equal means (alternative hypothesis says they are unequal), two simple random samples are obtained.In sample 1, the mean and standard deviation are 10 and 6 respectively.In sample 2, the mean and standard deviation are 16 and 4 respectively.Each sample is of size 6.The data are normally distributed.The true standard deviations of the two populations may be assumed to be equal.What can you say about the P-value for the test of equal means? -->
It must be that the resulting P-value must be
A) Greater than 0.2
B) Between 0.19 and 0.10
C) Between 0.09 and .05
D) Between .049 and .02
E) Less than 0.02
Answer:
The correct option is B
Step-by-step explanation:
From the question we are told that
The mean of sample 1 is [tex]\= x_1 = 10[/tex]
The standard deviation is [tex]s_1 = 6[/tex]
The mean of sample two is [tex]\= x_2 = 16[/tex]
The standard deviation is [tex]s_2= 4[/tex]
The sample size for both samples is [tex]n_1 = n_2 = n = 6[/tex]
The null hypothesis is [tex]H_o : \mu_1 = \mu_2[/tex]
The alternative hypothesis is [tex]H_a : \mu_1 \ne \mu_2[/tex]
Generally the test statistics is mathematically represented as
[tex]z = \frac{ \= x_1 - \= x_2 }{ \sqrt{ \frac{s^2_1}{n_1} +\frac{s^2_1}{n_2} } }[/tex]
=> [tex]z = \frac{ 10 - 16 }{ \sqrt{ \frac{6^2}{6} +\frac{4^2}{6} } }[/tex]
=> [tex]z = -1.3646[/tex]
From the z table the area under the normal curve to the left corresponding to -1.3646 is
[tex]P(Z < -1.3646) = 0.086189[/tex]
Generally the p-value is mathematically represented as
[tex]p-value = 2 P(Z < -1.3646)[/tex]
=> [tex]p-value = 0.086189 * 2[/tex]
=> [tex]p-value = 0.1724[/tex]
So the p-value is Between 0.19 and 0.10
Write the equation of the line in fully simplified slope-intercept form.
Step-by-step explanation:
For every 3 squares across, the line drops by 1 square.
Therefore the slope of the lina is -1/3.
The y-intercept of the line is -8 (when x = 0)
The equation of the line is y = -1/3 x - 8.
6. Determine the number of solutions for each of the equations below. Be sure to
justify your conclusions. *
(z – 8)2 = -1
A. one solution
B. infinitely many solutions
C.no solution
D. x = 9
Answer:
C. no solutionStep-by-step explanation:
Determine the number of solutions for each of the equations below. Be sure to
justify your conclusions. *
(z – 8)2 = -1
A. one solution
B. infinitely many solutions
C.no solution
D. x = 9
Given the expression;
(z – 8)^2 = -1
we are to find the nature of the solution;
Take the square root of both sides
(z – 8)^2 = -1
√(z – 8)^2 = √-1
z- 8 = √-1
Note that √-1 will give a complex number i to have;
z = 8 ± i
This therefore shows that the equation has no real solution.
liz has 9 buttons. kristen has b more buttons than liz choose the expression that shows how many buttons kristen has. A. b - 9. B. 9 + b. C. 9. D. 9 - b
Answer:
B. 9+b
Step-by-step explanation:
if b represents the number of buttons more than 9, then you just have to add 9 to that and you get your equation.
This explanation made better sense in my head...
Aaron rolled a fair six-sided number cube, numbered 1 through 6, several times and recorded the data in the table below. Which statement about this situation is true? *
Answer:
Aaron rolled a fair six-sided number cube, numbered 1 through 6 is explained below in details.
Step-by-step explanation:
a. FALSE
Trial possibility of rolling a 6 =1/20 = 0.05
Logical possibility of rolling a 6 = 1/6 = 0.17(approximately.)
So the trial possibility of rolling a 6 is not equal to the logical possibility of rolling a 6.
b. FALSE
Trial possibility of rolling an even number = Trial possibility of rolling number 2,4 or 6 = 4/20+2/20+1/20= 7/20 = 0.35
Logical possibility of rolling an even number = 3/6 = 1/2=0.5
Therefore the Test possibility of rolling an even number is shorter than the logical possibility of the same.
c. TRUE
Trial possibility of rolling a 1= 6/20= 0.3
Logical possibility of rolling a 1= 1/6 = 0.17 (approx.)
So the Trial possibility of rolling a 1 is greater than the logical possibility of rolling a 1.
d. FALSE.
Trial possibility of rolling a 4= 2/20= 0.1
Logical possibility of rolling a 4 = 1/6 = 0.17 (approx.)
So the Trial possibility of rolling a 4 is less than the logical possibility of rolling a 4.
What is the measure ofEGE?
What is the measure ofCGF?
E
50
F
options for EGF are 40, 55, 65, 80
options for CGF are 50, 90, 95, 115
Step-by-step explanation:
Angle EGF = 0.5(180° - 50°) = 65°.
Angle CGF = 180° - Angle EGF = 115°.
find the decimal equivalent of the following percent: 0.45%
When rolling two 6-sided dice, what is the probability of rolling a sum of 7 and 11?
Answer:
We have two 6-sided dice.
Each one of them has 6 possible outcomes.
The total number of outcomes for the pair, will be equal to the product between the numbers of outcomes for each one of them
Then the total number of outcomes is:
C = 6*6 = 36.
The number of outcomes where the sum of the dice are 7 are:
1 and 6
6 and 1
2 and 5
5 and 2
3 and 4
4 and 3
So we have 6 outcomes where the sum of both numbers is equal to 7.
The probability of rolling a pair such that the sum is equal to 7, is equal to the quotient between the number of outcomes that meet this condition (6) and the total number of outcomes (36)
The probability is:
P = 6/36 = 1/6
Now let's do the same for 11.
The outcomes where the sum is 11 are:
5 and 6
6 and 5
So we have two outcomes.
In this case, the probability will be:
P = 2/36 = 1/18
Solve the equation.
3y + 11 = -16
Answer:
y= -9
Step-by-step explanation:
Answer:
y = -9
Step-by-step explanation:
Algebra:
3y + 11 = -16
-11 -11
3y = -27
÷ 3 ÷ 3
y = -9
It cost $4.75 for 25 fl-oz of detergent. How much cost per fl-oz?
It cost $ per fl-oz.
Answer:
It costs 19 cents or 0.19 dollars per fluid ounce.
Step-by-step explanation:
4.75 divided by 25 is 0.19. 0.19 is 19 cents.
Answer:
19
Step-by-step explanation:
What is the value of x in the rhombus below?
O A. 28
O B. 56
O C. 58
O D. 24
Answer:
A. 28
Step-by-step explanation:
x = 28
Value of x in the rhombus is [tex]28^{0}[/tex].
What is rhombus?A rhombus can be defined as a special parallelogram as it fulfills the requirements of a parallelogram, i.e. a quadrilateral with two pairs of parallel sides. In addition to this, a rhombus has all four sides equal just like a square.
According to the question
DB, CA are diagonal line
So, <CAB + <DBA = [tex]90^{0}[/tex]
⇒ x + 6 + 2x = [tex]90^{0}[/tex]
⇒ 3x = 90 - 6
⇒ 3x = 84
⇒ x = [tex]\frac{84}{3}[/tex]
⇒ x = [tex]28^{0}[/tex]
Hence, value of x in the rhombus is [tex]28^{0}[/tex].
Find out more information about rhombus is [tex]28^{0}[/tex].
https://brainly.com/question/27870968
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y = 230x + 100
Is this proportional or non proportional?
Proportional equations are of the form y = kx, for some fixed constant k. The k value is the constant of proportionality.
The +100 at the end is why we don't have a proportional equation.
Visually all proportional equations go through the origin, meaning the lines have y intercept of 0. For y = 230x+100, the y intercept is 100.
Pls help with right answer
Answer: I believe B.
If not I apologize I haven't had to do this type of math in a while.
Answer:
B.Divide the numerator and denominator by 11
13. Photography world has a portrait special. A
three-pose portrait package has a sitting fee of $35,
and a six-pose package has a sitting fee of $60. On a
Saturday, $690 was collected in sitting fees. Which
equation can be used to represent x, the number of
three-pose portrait packages, and y, the number of
six-pose portrait packages?
A. 360x + 105y = 690
B. 35x + 60y = 690
C. 60x + 35y = 690
D. 105x + 360y = -690
Answer:
35x + 60y = 690
Why:
We need to correct number to represent X (which is 35) and Y (which is 60).
And 35x + 60y = 690, 690 being the total, fits what we need to answer.
All of the other options display an incorrect number for the X and Y values.
Answer:
35x + 60y = 690
Step-by-step explanation:
Which one is right ?? Ejenejejdjdjrjrjfjfjfdjjrjrjrjrtjrjrjrj ururhrjej
Answer:
The answer is 79.5
Step-by-step explanation:
Answer:
i cant really see but i think it is b
Step-by-step explanation:
Helpppppppppppppppppppoppppppoo
Answer:
Step-by-step explanation:
abc=80, abm= 100
acb= 40, acn= 140
angle a = 60
x=80, y=40
Answer:
x = 80° y = 40°
Step-by-step explanation:
ABC = 80° ACB = 40°
ABC+ACB+A = 180° (sum of angles in a triangle = 180°)
80+40+A = 180°
A = 60° (sum of angles in a triangle = 180°)
X = 80° (ALTERNATE ANGLES, angles x is alternate to angle ABC = 80° )
y = 40° (alternate angles, angle y is alternate to angle ACB = 40°)
to cross-check : sum of angles on a straight line = 180°
x+ y + A = 180sum of angles on a straight line = 180°
80+40+60 = 180°
ABM = 100° = (sum of angles on a straight line = 180°)
80° + 100° = 180°
ACN = 140° (sum of angles on a straight line = 180°)
40° + 140° = 180°
Find the x and y intercepts of the following equation. 3x - 8y = 24