Answer:
d
Step-by-step explanation:
Blaze is paid $4 for every hour he babysits. Mrs. Dirlam paid him for 5 hours of
babysittting. On the way home, Blaze spent $9 on a book and $6 on a puzzle. How
much money did Blaze have left from the money he received from Mrs. Dirlam?
Answer:
5 dollars left
Step-by-step explanation:
4 x 5 is 20
then 20-15 is 5
hope this helps luv
Two cars leave from the same city at the same time and drive in the same direction
what is the question that you need help with
Jeremy listed five rational numbers. Then he drew a number line to display and compare them.
Part A
Plot the numbers on the number line by dragging each one to the correct location,
6
3
3
4
1.5 0.25
5
4
-2.
-1
0
1
2
Answer: there you go
Step-by-step explanation: That is the answer
What are the solutions to the equation Sine (x + StartFraction 7 pi Over 2 EndFraction) = negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction over the interval [0, 2Pi]?
Given:
The equation is
[tex]\sin\left(x+\dfrac{7\pi}{2}\right)=-\dfrac{\sqrt{3}}{2}[/tex]
To find:
The solutions of given equation over the interval [tex][0,2\pi][/tex].
Solution:
We have,
The equation is
[tex]\sin\left(x+\dfrac{7\pi}{2}\right)=-\dfrac{\sqrt{3}}{2}[/tex]
[tex]\sin\left(x+\dfrac{7\pi}{2}\right)=-\sin \dfrac{\pi }{3}[/tex]
[tex]\sin\left(x+\dfrac{7\pi}{2}\right)=\sin (-\dfrac{\pi }{3})[/tex]
If [tex]\sin x=\sin y[/tex], then [tex]x=n\pi +(-1)^ny[/tex].
Over the interval [tex][0,2\pi][/tex].
[tex]x+\dfrac{7\pi}{2}=4\pi-\dfrac{\pi }{3}[/tex] and [tex]x+\dfrac{7\pi}{2}=5\pi+\dfrac{\pi }{3}[/tex]
[tex]x=\dfrac{11\pi }{3}-\dfrac{7\pi}{2}[/tex] and [tex]x=\dfrac{16\pi}{3}-\dfrac{7\pi}{2}[/tex]
[tex]x=\dfrac{22\pi-21\pi }{6}[/tex] and [tex]x=\dfrac{32\pi-21\pi }{6}[/tex]
[tex]x=\dfrac{\pi}{6}[/tex] and [tex]x=\dfrac{11\pi }{6}[/tex]
Therefore, the two solutions are tex]x=\dfrac{\pi}{6}[/tex] and [tex]x=\dfrac{11\pi }{6}[/tex].
Answer:
C. π/6 & 11π/6
Step-by-step explanation:
If you graph the equation ( Sin (x+7π/2)=-√3/2) and look between 0 & 2π, you'll see that the lines intersect the x-axis at π/6 & 11π/6.
If f(x) = 5x - 7, what is f(3)?
O A. 8
O B. 1
O c. 2
D. 22
please answer i’ll give extra points
Answer:
i think it might be d
Step-by-step explanation:
3x=3x+4 does it have a soultion
Answer:
No solution
Step-by-step explanation:
3x = 3x + 4
-3x -3x
0 = 4
Examples of solutions:
2 = 2 infinite solutions
x = 2 one solution
2 = 0 no solution
please help and do any of them that you can
Answer:
Sorry but thats too cunfusing for me sorry I couldn't help
Step-by-step explanation:
best of luck
There are 30 popsicles in the
freezer
1⁄2 of them are cherry flavored The
rest are lime flavored.
How many are lime flavored?
Answer:
15 are lime flavored
Step-by-step explanation:
To find the answer you have to divide 30 by 2 to get 15.Because to find half of something you have to divide the number by two.
Have a good day!
pls help ill mark brainliest
Answer:
No solution or B
Step-by-step explanation:
Multiply eq1 by 3.
3y=18x+6
3y-18x=12
Regroup:
18x-3y=-6
-18x+3y=12
Add:
0=6???
Impossible
So no solution.
Hope this helps plz mark brainliest :D
Answer:
No solution
Step-by-step explanation:
First we need to solve the equations.
I'll use the combining method
To do the combining method you need to get one of the variables in the first equation to be the negative correspondent to the same variable in the second equation.
(Ex:
If there was 2x in the first equation we would want there to be -2x in the second so they cancel out.)
y=6x+2
subtract 6x from each side to get the variables to line up
y-6x=2
3y-18x=12
To get -6x to equal 18x, we will multiply everything in the first equation by -3
-3y+18x=-6
3y-18x=12
Now combine the two terms
-3y and 3y cancel out
18x and -18x cancel out
-6+12=6
We are left with 0=6.
0 does not equal 6 so there is no solution.
(X-1)+(x-2) is my question plz answer quick
Answer:
there are two answers to this question
1; X=2
and
2;X=+1
Step-by-step explanation:
open the first brackets with an invisible +1
x-1=0
x=0+1
X=+1
open the second bracket with the plus +
x-2=0
X=0+2
X=+2
hence,
X=+1 and +2
Which equation describes a line of symmetry for rectangle ABCD
Answer:
C. [tex] x = -2 [/tex]
Step-by-step explanation:
A rectangle has two lines of symmetry. That is, the line that divides the rectangle into two equal halves.
Taking a look at the rectangle that is placed on the coordinate grid. At what points do you think the two lines of symmetry can be located at that will give us two possible equal halves?
One will be horizontal, the other will be vertical.
For the horizontal line, the line of symmetry can be located at y = 5. If an horizontal line cuts through the rectangle at y = 5, we would have two equal halves.
Thus, an equation for a horizontal line is often represented as [tex] y = k [/tex]. Where k is a constant, because every coordinate point on the horizontal line would have the same value of k, which is where the line cuts across the y-axis. The slope of am horizontal line remains zero also.
Therefore, the equation of the line of symmetry of the rectangle shown in the coordinate grid would be:
✅[tex] y = 5 [/tex]
The second line of symmetry which is vertical, would cut across the rectangle at x = -2.
Thus, the slope of a vertical line is undefined.
The equation of a vertical line is represented as x = h.
Where h is a constant, since all coordinates along the vertical line would surely have a x-coordinate value of -2, regardless of what y-coordinate value they have.
Therefore, h, in this case is -2.
Thus, the equation that represents the second line of symmetry of the rectangle above would be:
✅[tex] x = -2 [/tex].
The two equations that represent the two lines of symmetry of the rectangle, respectively, are:
[tex] y = 5 [/tex]
[tex] x = -2 [/tex]
From the options given, the only correct option provided is:
[tex] x = -2 [/tex].
1. - 2а - 9 = 6a + 15
Answer:
-2a-6a=15+9
-8a=24
a=24/-8
a=-3
Answer:
a=-3
Step-by-step explanation:
-2a-6a=15+9
-8a=24
a=-3
Please help!
3(3w−4)=−20
w= ???
Find the slope of each line
answer: 4
explanation: it would be 4 because slope is rise/run and it rises 4 and runs one so u would get 4/1 which is 4 simplified. :)
Answer:
Slope: 4
Step-by-step explanation:
The slope is 4, because each time x is increased by 1 y is increased by 4.
The rise would be 4 and the run would be 1.
Since the slope of a graph can be found by dividing rise by run, the slope would be 4/1, which is equal to 4.
Expand.
Your answer should
be a polynomial in standard form.
(-a+1) (5a+6)
Answer:
-5a^2 - a + 6
Step-by-step explanation:
Now, I don't know if you have memorized this very niche trick in Algebra. Don't tell anybody I told you this, as the CIA will chase me down for allegedly sharing higher intelligence, but you can easily expand equations by the method of FOIL (FIRSTS, OUTSIDES, INSIDES, LASTS). Using this method, we multiply -a and 5a, -a and 6, 5a and 1, and 1 and 6. Adding them all together, our expanded form is -5a^2 - 6a + 5a + 6. Adding like terms, our final polynomial is -5a^2 - a + 6.
Eight times the difference of a number and three is sixty-four
Answer:
8 (n - 3) = 65
Step-by-step explanation:
the difference of a number and three means n - 3
8 times the difference of means that it will be 8 and then parenthesis the next terms that are said, so 8 (?)
is sixty-four means = 64
so put it together and you have 8 (n - 3) = 65
What is the rate of change of y with respect to x for 25x-4y=50
Answer:
25/4, I believe
Step-by-step explanation:
the rate of change of y with respect to x is 25/4
hich statement regarding the diagram is true?
m∠WXY = m∠YXZ
m∠WXY < m∠YZX
m∠WXY + m∠YXZ = 180°
m∠WXY + m∠XYZ = 180°
Answer:
m∠WXY + m∠YXZ = 180
Step-by-step explanation:
i need help with this ^
Answer:
a=11
Step-by-step explanation:
Add all expressions to equal 180. (a+20+12a-14+a+20=180)
Combine like terms and solve
You'll get a=11
what is the perpendicular slope intercept form????
Answer:
y=3/4x+5
Step-by-step explanation:
Well to begin with make the slope perpendicular so so far we have y=3/4x but than it needs to go through that point so we input the X in that point into our current equation to get y=-3 but we need to make it y=2 so we change our equation to y=3/4x+5 and that is your equation
help me plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Answer:
8.6
Step-by-step explanation:
theres a photo with the question <3
Answer:
p≤1 or p∠-2
Step-by-step explanation:
REMEMBER OUR GOAL IS TO LEAVE P ALONE!!
p≤1:
1. [tex]\frac{3p+5}{2}\geq 4[/tex] Multiply by 2 to cancel out 1/2 which would give you [tex]{3p+5}\geq 8[/tex]
2. Then subtract 5 which would give you 3p≥3
3. Then divide by 3 which will FLIP the ≥ into ≤.
4. Therefore, it's p≤1.
p∠-2:
1. [tex]\frac{p-6}{4}\leq -2[/tex] Multiply by 4 to cancel out the denominator which would give you [tex]p-6[/tex]∠-8
2. Add 6 to both sides which results in p<-2
Explain the significance of the number $1080.46. If you plan on leaving $800 unpaid, which
card is the better choice?
f(x)=[tex]\frac{8x-3}{2x+7}[/tex]
find all numbers that are not in the domain
step by step plz lol thanks
9514 1404 393
Answer:
x = -7/2 is not in the domain
Step-by-step explanation:
The numbers that must be excluded from the domain are the ones that make the function be undefined. That is, any value of x that makes the denominator zero will be excluded from the domain.
2x +7 = 0
2x = -7
x = -7/2 . . . . . must be excluded
The only number not in the domain is x = -3.5.
I need help with this last question and then I'll submit my test! please help in full explanation!
Answer:
Brianna is right. The quotient is in the hundreds place ,because the first digit is 2 spaces to the left from the comma/period ,thus we know it's a hundred
what is the slope of the line that passes through the points (48,10) and (-36,17)
Answer:
slope is -1/12
Step-by-step explanation:
slope =y2 - y1 / x2-x1
The weights of healthy adult male Labrador Retrievers are approximately Normally distributed with a mean of 77 pounds and a standard deviation of 6 pounds
A)Make an accurate sketch of the weights of Labrador Retrievers with the horizontal axis marked
B)What weight would represent the 25th percentile?
C)What weight would represent the 75th percentile?
D) What is the interquartile range of male Labrador weights?
E)What proportion of male adult Labrador retrievers weigh above 85 pounds?
F) What proportion of male adult Labrador retrievers weigh between 60 and 80 pounds?
G) What proportion of male adult Labrador retrievers weigh less than 65 pounds?
Answer:the photo is for part A.
B) the weight would be Invnorm(.25,77,6)=72.95
C)the weight would be 81.04 but this is the work invnorm(.75,77,6)=81.04
D)IQR=Q3-Q1
81.04-72.95=8.09
E)9.12 is the answer the work normalcdf(85,1000,77,6)=.0912
F).6892 or 68.92% are the answers the work normalcdf(60,80,77,6)=.6892
G).0227 or 2.27% is the answer and the work normalcdf(0,65,77,6)=.0227
Step-by-step explanation:
Using the normal distribution, we have that:
a) The sketch is given at the end.b) A weight of 72.95 pounds would represent the 25th percentile.c) A weight of 81.05 pounds would represent the 75th percentile.d) The interquartile range is of 8.1 pounds.e) 0.0918 = 9.18% of male adult Labrador retrievers weigh above 85 pounds.f) 0.6892 = 68.92% of male adult Labrador retrievers weigh between 60 and 80 pounds.g) 0.0228 = 2.28% of male adult Labrador retrievers weigh less than 65 pounds.----------------------
Problems of normal distribution can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
----------------------
Mean of 77 means that [tex]\mu = 77[/tex]Standard deviation of 6 means that [tex]\sigma = 6[/tex]As for item a, the sketch is given at the end of the question.----------------------
Item b:
The weight is X when Z has a p-value of 0.25, so X when Z = -0.675.[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-0.675 = \frac{X - 77}{6}[/tex]
[tex]X - 77 = -0.675(6)[/tex]
[tex]X = 72.95[/tex]
A weight of 72.95 pounds would represent the 25th percentile.
----------------------
Item c:
The weight is X when Z has a p-value of 0.75, so X when Z = 0.675.[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]0.675 = \frac{X - 77}{6}[/tex]
[tex]X - 77 = 0.675(6)[/tex]
[tex]X = 81.05[/tex]
A weight of 81.05 pounds would represent the 75th percentile.
----------------------
Item d:
The interquartile range is the difference between the 75th and the 25 percentile, thus:
[tex]81.05 - 72.95 = 8.1[/tex]
The interquartile range is of 8.1 pounds.
----------------------
Item e:
The proportion is 1 subtracted by the p-value of Z when X = 85, thus:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{85 - 77}{6}[/tex]
[tex]Z = 1.33[/tex]
[tex]Z = 1.33[/tex] has a p-value of 0.9082.
1 - 0.9082 = 0.0918.
0.0918 = 9.18% of male adult Labrador retrievers weigh above 85 pounds.
----------------------
Item f:
The proportion is the p-value of Z when X = 80 subtracted by the p-value of Z when X = 60, thus:
X = 80:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{80 - 77}{6}[/tex]
[tex]Z = 0.5[/tex]
[tex]Z = 0.5[/tex] has a p-value of 0.6915.
X = 60:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{60 - 77}{6}[/tex]
[tex]Z = -2.83[/tex]
[tex]Z = -2.83[/tex] has a p-value of 0.0023.
0.6915 - 0.0023 = 0.6892.
0.6892 = 68.92% of male adult Labrador retrievers weigh between 60 and 80 pounds.
----------------------
Item g:
This proportion is the p-value of Z when X = 65, thus:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{65 - 77}{6}[/tex]
[tex]Z = -2[/tex]
[tex]Z = -2[/tex] has a p-value of 0.0228.
0.0228 = 2.28% of male adult Labrador retrievers weigh less than 65 pounds.
A similar problem is given at https://brainly.com/question/21628677
calculate the perimeter of the rectangle if the length is 7cm and the height is 2cm
Answer:
Perimeter = 18
Step-by-step explanation:
P=2(l+w)=2·(7+2)=18cm
Elena went to a sporting goods store that was having a sale. She bought a tennis ball and 3 cans of tenis balls The tennis racket normally cost $43. All tenis rackets are marked down 15%. One can of tens balls normally cost $4. The tenis balls are not marked down. The sales tax rate is 8.5% How much will she pay for everything including tax?
Answer: She will pay $52.68, including taxes
Step-by-step explanation: One can of tennis ball is $4 and there are no discount on it. Elena bought 3 cans, so:
can = 3 x 4 = 12
One tennis racket is $43 but it has a discount of 15%:
discount = 0.15 x 43 = 6.45
total racket = 43 - 6.45 = 36.55
Elena will have to pay:
pay = 12 + 36.55 = 48.55
She will also have to pay taxes, which are 8.5% over the price she paid:
pay + tax = 48.55 x 0.085 = 4.13
total to pay = 48.55 + 4.13 = 52.68
Buying 3 can of tennins ball and one racket, Elena paid $52.68, including taxes.
