Answer:
100C=m
Step-by-step explanation:
If 250 copies are made in 2.5 minutes, you get the equation:
250c=2.5m
divide by 2.5 on both sides and you get:
100c=m
So in m minutes, 100c copies are made.
1. Valerie's monthly income is $300 and her monthly expenses are $250. How much money
could Valerie save in the next eight months without changing her income or expenses?
Answer:
$400
Step-by-step explanation:
2x + y - z = -8
2y + 3z = -6
-1/2x + y + z = -4
For the following matrix, which of the following matrix operations would result in a11 = 1?
Multiply row 2 by -1 and add it to row 1.
Multiply row 1 by - 1/2.
Multiply row 1 by 1/2.
Multiply row 3 by -4 and add it to row 1.
(please show your solution if possible & pls just type in the comments if unsure abt your answer.. thank you)
Answer:
Multiply row 1 by [tex]\frac{1}{2}[/tex].
Step-by-step explanation:
The augmented matrix of the system of linear equation is described below:
[tex]\left[\begin{array}{cccc}2&1&-1&-8\\0&2&3&-6\\-\frac{1}{2} &1&1&-4\end{array}\right][/tex]
Where [tex]a_{11} = 2[/tex], if we need to create [tex]a_{11} = 1[/tex], we need to multiply row 1 by [tex]\frac{1}{2}[/tex], that is to say:
[tex]\left[\begin{array}{cccc}1&\frac{1}{2} &-\frac{1}{2} &-4\\0&2&3&-6\\-\frac{1}{2} &1&1&-4\end{array}\right][/tex]
Hence, the correct answer is: Multiply row 1 by [tex]\frac{1}{2}[/tex].
Help me and show work plz <3
Quick question if I had a problem that was sin x = 18.9/20 =.945 how would I inverse sin of both sides ?
Answer:
The result is about 70.9 degrees
Step-by-step explanation:
Easy for a calculator. If you're not using a calculator, it's much more tedious!
There is an inverse sine key on your calculator, but you may have to press a key (likely labeled 2nd or INV) first. The attached image shows a TI-83 display. To get the inverse sine, I first pressed the yellow 2nd key, then the sin key.
Check MODE first to make sure you're measuring angles in degrees (if that's what you want!). Some calculators display angle mode with a small letter at the top of the display, D, R, or G usually.
The left side of the equation produces just x.
[tex]\sin{x}=.945\\\\\sin^{-1}(\sin{x})=\sin^{-1}(.945)\\x=\sin^{-1}(.945) \approx 70.9^\circ[/tex]
For each pair of equations draw the lines for each the point of intersection represents the sol y=3x-1 y=2x
Answer:
Point of intersection is - (x, y) = (1, 2)
Step-by-step explanation:
Given - y=3x-1 y=2x
To find - For each pair of equations draw the lines for each the point of intersection represents the sol.
Proof -
Given that, the two lines are
y = 3x - 1 .........(1)
y = 2x .........(2)
For the intersection point, Compare the two equations (1) and (2)
By comparing, we get
3x - 1 = 2x
⇒3x - 2x - 1 = 0
⇒x - 1 = 0
⇒x = 1
Now,
Put the value of x in equation (1), we get
y = 3(1) - 1
= 3 - 1
= 2
⇒y = 2
∴ we get
Point of intersection is - (x, y) = (1, 2)
The graph is as follows :
(NO LINKS) I BEG U HALP FELLOW SMART PPL
Answer: See the image below for the filled out table.
The other root is x = -2
===========================================================
Explanation:
The turning point is at (1, -45) which is the vertex. This is where the graph goes downhill, and then turns around to go uphill, or vice versa. Depending on the direction, the vertex is the lowest point or the highest point on the parabola.
We have (h,k) = (1,-45) as the vertex, so h = 1 and k = -45
y = a(x-h)^2 + k
y = a(x-1)^2 + (-45)
y = a(x-1)^2 - 45
Now plug in any other point from the table. You cannot pick (1,-45) or else you won't be able to solve for the variable 'a'. Let's go for (0,-40)
We'll plug x = 0 and y = -40 into the equation above to solve for 'a'
y = a(x-1)^2 - 45
-40 = a(0-1)^2 - 45
-40 = a(-1)^2 - 45
-40 = a - 45
a-45 = -40
a = -40+45
a = 5
Therefore, the equation for this parabola is
y = 5(x-1)^2 - 45
As a way to check, we can plug in something like x = -3 to find that...
y = 5(x-1)^2 - 45
y = 5(-3-1)^2 - 45
y = 5(-4)^2 - 45
y = 5(16) - 45
y = 80 - 45
y = 35
Which matches what the table shows in the first column. I'll let you verify the other columns. As you can probably guess at this point, we'll plug in the x values to get the corresponding y values.
So for x = -2, we get...
y = 5(x-1)^2 - 45
y = 5(-2-1)^2 - 45
y = 5(-3)^2 - 45
y = 5(9) - 45
y = 45 - 45
y = 0
The result of 0 here indicates we have a root at x = -2. This is the other x intercept. The x intercept already given to us was x = 4.
The rest of the table is filled out using the same idea. You should get what you see below.
There are 2.54 centimeters in 1 inch. There are 100 centimeters in 1 meter.
To the nearest inch, how many inches are in 3 meters? Enter the answer in the box.
Need answer ASAP, don't need explanation. Find the area of the shaded region. Those are the four options.
Answer:
All you have to do is multiply 14 by 8.
14 x 8 = 112
Step-by-step explanation:
The standard diameter of a golf ball is 42.67 mm.
A golf ball factory does quality control on the golf balls it manufactures. Golf balls are randomly measured to ensure the correct size. If the discrepancy in diameter is more than 0.004 mm, the production is stopped.
Which function could represent this situation
Answer:
The first one is the second option
The second one is the 2 and 4 options
Step-by-step explanation:
It’s right on ed
Answers:
B. (f(x) = |42.67 – x|)
B and D (42.6668 mm and 42.673 mm)
the next slide-
The parent function has a slope of 1 or -1 from any point to the vertex. In the problem, we are given the points
(–2, 3) and (–1, 0)
The slope between the two points is
m = 0 - 3 / (-1 - (-2))
m = 3
The slope is greater than 1. Therefore, the graph has been dilated by a scale factor other than 1.
Can some one help me with this question its hard :( down below ill give brainliest
Answer:
The answer is D
Step-by-step explanation:
when you are dividing two numbers with an exponent you want to subtract the exponents.
7-4 =3
Sydney currently earns 11.50 an hour working part time. What is the minimum increase per hour she needs to at least match the average annual rate of inflation at three percent
Answer:
The salary of Sydney to meet the loss due to inflation should be 11.85 per hour
Step-by-step explanation:
The inflation rate is 3%
This means that the alary amount will reduce by 3%.
3% of Sydney's hourly salary is
[tex]\frac{3}{100} *11.50[/tex] = 0.345
Hence, the new salary must increase by 0.345 dollar per hour
The salary of Sydney to meet the loss due to inflation should be 11.50 + 0.345 = 11.845 or 11.85
Find the measure of A
Help ASAP
NO LINKS!
Answer:
42 degrees
Step-by-step explanation:
The measure of the inscribed angle is half of the angle of the measure bc
1/2 * 84 = 42
Please help-
Sam has 3 shirts, 3 pairs of shorts, and 2 pairs of shoes. How many possible combinations does Sam have if she wears 1 shirt, 1 pair of shorts and 1 pair of shoes at a time?
Answer:
The answer should be 18: 3 x 3 x 2
Which statement best describes La Trishas work
Answer:
Option A that is best describes the given scenario is option A that is “LaTricia is not correct. The word product does mean to multiply, but 12 should be the product and 3 should be one of the factors.”
Step-by-step explanation:
Given that LaTricia wrote a sentence as an equation. Given sentence is “Twelve is the product of three and a number”
Expression written by LaTricia =
Lets first concentrate on sentence and we will create our expression based on sentence and check it against the expression created by LaTricia. Let the number represented by variable w.
So product of 3 and the number will be represented by
And as Twelve is the product of three and a number
That is three is one of the factor and result product is 12. Hence option A that is best describes the given scenario is option A that is “LaTricia is not correct. The word product does mean to multiply, but 12 should be the product and 3 should be one of the factors.”
Kelsey takes out a loan for $6000 to start a business after high school. The bank charges her 8% simple interest for the loan for 5 years, how much interest will she pay?
Answer:
$2400
Step-by-step explanation:
Given data
Principal= $6000
Rate= 8%
Simple interest= ???
Time= 5 years
The expression for the simple interest is
Simple interest= PRT/100
Simple interest= 6000*8*5/100
Simple interest= 240000/100
Simple interest= $2400
Hence the simple interest after 5 years is $2400
What is the equation for -19 = b - 6
Answer:-13=b, b=-13
Step-by-step explanation: Move -6 to the other side, which turns it to positive. Now you subtract -19+6=-13
Answer:
[tex]b=-13[/tex]
Step-by-step explanation:
[tex]-19 = b - 6[/tex]
Switch sides
[tex]b-6=-19[/tex]
Add 6 to both sides
[tex]b-6+6=-19+6[/tex]
Simplify
[tex]b=-13[/tex]
state study on labor reported that one-third of full-time teachers in the state also worked part-time at another job. For those teachers, the average number of hours worked per week at the part-time job was 13. After an increase in state teacher salaries, a random sample of 400 teachers who worked part-time at another job was selected. The average number of hours worked per week at the part-time job for the teachers in the sample was 12.5 with a standard deviation of 6.5 hours. Is there convincing statistical evidence, at the level of α=0.05, that the average number of hours worked per week at part-time jobs decreased after the salary increase?
(A) No. The p-value of the appropriate test is greater than 0.05.
(B) No. The p-value of the appropriate test is less than 0.05.
(C) Yes. The p-value of the appropriate test is greater than 0.05.
(D) Yes. The p-value of the appropriate test is less than 0.05.
(E) Not enough information is given to determine whether there is convincing statistical evidence
answer a show work, please
Answer: a) no. The p value of the appropriate test is greater than 0.05
Step-by-step explanation:
The statement "No. The p-value of the appropriate test is greater than 0.05." is a correct option (A) is correct.
What is the standard deviation?It is defined as the measure of data disbursement, It gives an idea about how much is the data spread out.
We have:
Sample size n = 400 teachers
Sample mean X = 12.5 hours
Standard deviation S = 6.5 hours
Population mean u = 13 hours
Null hypothesis H0: u = 13
Alternativ hypothesis u <13
T-test:
[tex]\rm t = \frac{x-u}{\frac{s}{\sqrt{n} } }[/tex]
[tex]\rm t = \frac{12.5-13}{\frac{6.5}{\sqrt{400} } }[/tex]
t = -1.5385
Now degree freedom df = n -1 = 400 - 1
df = 399, α = 0.05
P-value = p[1+t<-1.5385]
P-value = 0.0624
∴ P-value is greater than α because of this the null hypothesis failed.
Thus, the statement "No. The p-value of the appropriate test is greater than 0.05." is a correct option (A) is correct.
Learn more about the standard deviation here:
brainly.com/question/12402189
#SPJ2
HRLPPPPP IM FAILING MATHH
PLZ HELP ME!! THE PICTURE IS BELOW!! NO LINKS!!!
Find the value for x to the nearest tenth.
Select one:
A. 6.4
B. 5.2
C. 5.8
D. 4.5
==========================================================
Explanation:
Refer to the diagram below. I've added the points A, B, C, D, and E. Point A is the center of the circle while points B, C and D are along the circle's edge. The radius AC and chord BD intersect at point E.
Recall that whenever we have a radius perpendicular to a chord like this, it means that the radius bisects the chord. So that means chord BD is cut into two equal pieces BE and ED. The diagram given to you tells us that ED = x, so BE is also x units long as well. Overall, BD = BE+ED = x+x = 2x units.
Since BE = ED, the arcs formed are congruent as well. Minor arc BC is the same measure as minor arc CD. Both are 45 degrees. They combine to 90 degrees. In turn, this leads to central angle DAB to be 90 degrees.
Note how triangle DAB is an isosceles right triangle. The two equal legs are the two radii AB and AD, both which are 9 units long. The hypotenuse BD is equal to sqrt(2) times the leg length, so BD = 9*sqrt(2) units long.
Earlier I mentioned that BD = 2x also. We'll equate the two right hand side expressions and solve for x like so:
2x = 9*sqrt(2)
x = (9*sqrt(2))/2
x = (9/2)*sqrt(2)
x = 4.5*sqrt(2)
x = 6.36396103067892
That value is approximate. Rounding to the nearest tenth leads to the final answer of 6.4; therefore, the answer is choice A.
Write the equation of the line in fully simplified slope-intercept form.
Answer:
y=2x-5
Step-by-step explanation:
i took algebra
What is the value of arccos(−1/2)in radians?
a) 2pi/3
b)pi/3
c)pi/6
d)5pi/6
Answer:
a] 2pi/3
this is the answer
Find the median number: 10,7,4,12,11,5,8,13,11
Answer:
10 median number
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
So, the median is the middle number, so first we have to arrange our numbers in order:
4, 5, 7, 8, 10, 11, 11, 12, 13
Now, as you can see, the middle number is 10
So the median of the set is 10
hope this helps:)
Look at this shape:which image shows a reflection?
Answer: C
You are looking for a shape that mirrors the question. If you mirror the question, your answer will be option C.
I hope you have a great day and take mental health breaks!
The correct reflection of the given shape is shown in option (c).
What is reflection?Reflection is basically a mirror image of the shape, in which the image of a given figure changes accordingly to a given line or axis.
The given image shows the shape which is faced toward east direction, when we place a mirror in front of the shape, the reflection of the image changes in west direction.
Option (c) shows the exact reflection of the given shape.
To learn more about Reflection on:
https://brainly.com/question/15487308
#SPJ2
H(x)= ⎩ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎪ ⎧ 8+6x x+4 10 4x−3 , , , x<−7 −7≤x<−5 x≥−5
Answer:
[tex]h(-6) = -\frac{1}{5}[/tex]
Step-by-step explanation:
Given
[tex]h(x) =\left[\begin{array}{cc}8 + 6x\ \ &x < -7\\\frac{x + 4}{10} &-7 \le x <-5 \\4x - 3\ &x \ge -5\end{array}\right[/tex]
Required
Determine h(-6)
To do this, we make use of:
[tex]h(x) = \frac{x + 4}{10}[/tex]
Because [tex]-7 \le -6 <-5[/tex]
So, we have:
[tex]h(x) = \frac{x + 4}{10}[/tex]
[tex]h(-6) = \frac{-6 + 4}{10}[/tex]
[tex]h(-6) = \frac{-2}{10}[/tex]
Simplify
[tex]h(-6) = -\frac{1}{5}[/tex]
Evaluate the expression shown below and write the answer as a fraction in simplert form.
Answer:
-8/19
Step-by-step explanation:
-11/19 + 3/19
Since the denominators are the same, we add the numerators
(-11+3) /19
-8/19
Write an equation of the line that contains the given points.
(-1,9), (0, -8)
Answer:
y = -17x + 10
Step-by-step explanation:
to find slope use m= y2-y1/x2-x1
m= -8-9/0-(-1)
m= -17/1
m=-17
then use point slope formula (y-y1) =m(x-x1)
(y-9) = -17(x-(-1))
simplify
y-9 = -17x + 1
turn into slope intercept form
y = -17x + 10
PLEASE HELPPPP ILL GIVE BRAINLIEST!!!
Dan, Anna, and Todd are walking in a city park. Each time Dan takes 3 steps, Anna takes 5 steps. Each time Anna takes 3 steps, Todd takes 5 steps. If Anna and Todd take a combined total of 400 steps, how many steps does Dan take?
Answer:
1200
Step-by-step explanation:
Answer:
120
Step-by-step explanation:
Solve for a
3x - 2 = 4x + 5
Answer:
X = -7
Step-by-step explanation:
If you get $0.75 everyday for 7 years and already have $4.35 (not counting leap years) how much money would you have at the end of it all?
Step-by-step explanation:
7 years
leap years in 7 years:- 1
7 minus 1 equals to 6
6 calendar years to days:- 2190 days
so, $0.75 times 2190 = $1642.5
1642.5 plus $4.35 equals to 1646.85
a * b = 3a - 2b
2*(6*4)=
working please!!!
Answer:
A = 4
B = 2
2* (6 * 4) = 48
Please mark as brainliest if answer is right
Have a great day, be safe and healthy
Thank u
XD