Answer:
slope is 9
Step-by-step explanation:
y2-y1 over x2-x1 so you would do -8-10 over 2-4 which would be -18 over -2 and the you devide -18 devided by -2 and you get your answer and it is 9
What are the expressions?
Here we need to solve some expressions. Remember the following rules:
[tex](+)(+)=+ \\ \\ (-)(-)=+ \\ \\ (+)(-)=- \\ \\ (-)(+)=-[/tex]
Then, from the left side:
[tex]5-2\cdot 7=5-14=\boxed{-9} \\ \\ 5-2\cdot 4=5-8=\boxed{-3} \\ \\ 5-2\cdot 0=5-0=\boxed{5} \\ \\ 5-2\cdot -3=5+6=\boxed{11} \\ \\ 5-2\cdot 10=5-20=\boxed{-15} \\ \\ 5-2\cdot -8=5+16=\boxed{21} \\ \\[/tex]
from the right side:
[tex]-(-4)+3=4+3=\boxed{7} \\ \\ -(6)+3=-6+3=\boxed{-3} \\ \\ -(-8)+3=8+3=\boxed{11} \\ \\ -(-5)+3=5+3=\boxed{8} \\ \\ -(2)+3=-2+3=\boxed{1} \\ \\ -(15)+3=-15+3=\boxed{-12} \\ \\ -(-6)+3=6+3=\boxed{9}[/tex]
A pack of 100 recordable DVDs contains 5 defective disks. You select four disks . What is the probability of selecting at least three non-defective disks
Answer: 3% (3/100), 4% (1/25), and 5% (1/20)
Step-by-step explanation:
So, there are 100 recordable DVDs, and 5 are defective. The way you find the answer is by dividing 100 by 100, which equals one. That means you have a one percent chance to select one random DVD. But, since you need to find the probability of selecting at least three non-defective DVDs, you would need to multiply 1 by 3, 4 or 5 to get the percentages for you probability.
Final answer:
The probability of selecting at least three non-defective disks from a pack with 5 defective ones among a total of 100 is found by summing the probabilities of selecting exactly three non-defective disks plus the probability of selecting all four non-defective disks.
Explanation:
The question asks for the probability of selecting at least three non-defective disks from a pack that contains 100 recordable DVDs, with 5 being defective. To solve this, we consider the scenarios where 3 or 4 non-defective disks are chosen out of the 4 disks we pick. We will calculate these probabilities using the hypergeometric distribution, which is apt for scenarios where we have a finite population without replacement.
Calculating the Probability:
Let X represent the number of non-defective disks selected.
There are two outcomes where at least three disks are non-defective: when exactly 3 are non-defective (one is defective) or when all 4 are non-defective.
Probability of selecting 3 non-defective disks and 1 defective disk (X = 3):
P(X = 3) = [number of ways to choose 3 non-defective from 95]
imes [number of ways to choose 1 defective from 5] / [number of ways to choose 4 from 100].
Probability of selecting 4 non-defective disks (X = 4):
P(X = 4) = [number of ways to choose 4 non-defective from 95] / [number of ways to choose 4 from 100].
The total probability of selecting at least three non-defective disks is the sum of these two probabilities: P(X = 3) + P(X = 4).
Which of the following lines is perpendicular
to the equation given below?
y=-2x+8
The equation of the line perpendicular to y = -2x + 8 is y = 1/2x + 8.
A line is perpendicular to another line if their slopes are negative reciprocals of each other. The slope of the line y = -2x + 8 is -2, so the slope of a line perpendicular to it would be 1/2.
Of the above choices, only line (C) has a slope of 1/2. Therefore, the equation of the line perpendicular to y = -2x + 8 is y = 1/2x + b, where b is the y-intercept.
To find the value of b, we can substitute a point on the line y = -2x + 8 into the equation y = 1/2x + b. For example, the point (0, 8) lies on the line y = -2x + 8. Substituting this point into the equation y = 1/2x + b, we get:
8 = 1/2 * 0 + b
b = 8
Therefore, the equation of the line perpendicular to y = -2x + 8 is y = 1/2x + 8.
for such more question on perpendicular
https://brainly.com/question/1202004
#SPJ6
Given: x + 2y = -6. Solve for x.
Answer:
x= −6−2y
Step-by-step explanation:
Subtract 2y from both sides of the equation x= −6−2y
Answer:-6-2y
Step-by-step explanation:
X+2y=-6
subtract 2y from both sides
X+2y-2y=-6-2y
X=-6-2y
PLEASE HELP.
What is the value of X in the photo below? (please show work)
Value of x is 5. I remember doing this last year..
35a+45b=80
then we would do 99-80, and that gives us the value of c, 19
What is the measure of Arc XY in the diagram below ?
is it 71 ?
Answer:
maybe just 41?
Step-by-step explanation:
It's asking for the small arc XY, so that would just be 41. Correct me if i'm wrong
Pre image ABCD was dilated to produce image A’B’C’D why is the scale factor from the pre image? Enter your answer in the box as a fraction
The scale factor of the dilation from ABCD to A′B′C′D′ is 3.
Step-by-step explanation:
Step 1:
In the pre-image ABCD, the length of one of the sides is given as 14 units.
For the other shape A′B′C′D′, the same side as the previous shape is given as 8 units.
Step 2:
To determine the scale factor, we divide the measurement after scaling by the same measurement before scaling.
In this case, it is the given length of the sides CD and C′D′.
So the scale factor = [tex]\frac{C^{1} D^{1} }{CD} = \frac{8}{14} = \frac{4}{7} .[/tex]
So the shape ABCD is dilated by a scale factor of [tex]\frac{4}{7}[/tex] to produce the shape A′B′C′D′.
Answer: The answer is 4/7
Step-by-step explanation: the other persons work was correct!! so i got 100%
6/8 bigger or less then 1/2
Answer: /2 is not greater than 6/8 and the answer to the question "Is 1/2 greater than 6/8?" is no. Note: When comparing fractions such as 1/2 and 6/8, you could also convert the fractions (if necessary) so they have the same denominator and then compare which numerator is larger.
Answer:
6/8 is greater than 1/2
Step-by-step explanation:
Nerissa paid a total of $8 for 4 packs of pencils she purchased from the convenience store. Let p represent the cost of one pack of pencils.
Which equation shows an equality between two different ways of expressing the cost for all the pencils?
WILL MARK BRAINLIEST
Answer: 4*p=8
Step-by-step explanation:
You can use inverse operation to answer this equation.
write out you problem: 4 x p =8The inverse of multiplication is divisionyou do 4/4 which gives you one but the 4 will cancel itself outDo 8/4 which gives you 2under the equation write p = 2And be sure to line the p up with the p, the equal sign with the equal sign, and the 2 stays where it is ( which should be already lined up with the 8)Answer:
4*p=8
Step-by-step explanation: I took the test
is this true or false
Answer:
This is false
Step-by-step explanation:
xy is one term, x+y would be two terms
Answer:
False
Step-by-step explanation:
In an algebraic expression with terms, the terms are added together. Here all you have is x multiplied by y. xy is a single term. Since no term is being added to the term xy, all you have is one term, not two.
please help with the question below please and thank you!!!!
P( 4) =
13 and Q( 4) = 8, evaluate P( 4) Q(4).
3. Which linear equation corresponds to the line graph?
Ay=3x
B.
y=x-2
c. y = 1/²
P. y = 2x
Answer:
Y=1/3x
Step-by-step explanation:
1) there is no y intercept as x=0 when y=0 so that rules out y=x-2
2) next, we will use the formula for slope to find the value of m
Y2-Y1/X2-X1
Where y2=-1
Y1=0
X2=-3
X1=0
So
-1-0/-3-0=-1/-3
Aka 1/3
So y=1/3x
Hope this helps!
FGHI is a parallelogram. Find the measure of angle I.
*show your work please*
Answer:
I = 130
Step-by-step explanation:
The sum of all four angles in a four-sided closed shape will ALWAYS be equivalent to 360 degrees. Also, the opposite angles of a parallelogram will ALWAYS be equivalent. This means F = H.
To begin, the measure of F, y + 7, and the measure of H, 3y - 79, are equal. This equation looks like: y + 7 = 3y - 79
Now subtract y from both sides: 7 = 2y - 79
Add 79 to both sides: 86 = 2y
And divide both sides by 2: 43 = y
Now that you have the value of y, plug 43 into y and solve for both equations:
43 + 7 = 3(43) - 79
50 = 129 - 79
50 = 50
So now we know that the measure of angles F and H are 50. 50 + 50 is 100.
Since we know that the sum of all four sides must be equivalent to 360. subtract 100 from 360 to get the sum of the measures of angles I and G:
360 - 100 = 260
So now 260 must equal I + G. Since I and G must be equivalent, just divide 260 by 2 and you have your answer: 260/2 = 130
Use percent to find the new amount. You may round to the
nearest whole number when necessary.
56 increased by 25%
Good morning
Answer:
70Step-by-step explanation:
56 increased by 25% = 56+25%
= 56 + 56×(25÷100)
=70
________________________________
:)
Which information is a epposite isometry?
Answer: B) line reflection
The orientation will flip with a reflection. So if points A,B,C are going clockwise for instance, then A', B', and C' will go counterclockwise.
y=mx+b can someone break this down for me and help me understand it?
Answer:
y=mx+b broken down is in the step by step explanation.
Step-by-step explanation:
y=mx+b is the y intercept formula.it is mostly used for slopes.
y is usually equal to the total,or final answer.it is the start.
m is equal to the slope.in the formula.it can also be used as the rise over run,which means the top number is the amount of units you go up for rise,and run is the bottom number which is the amount of units you move to the right.if it is negative,you move the opposite ways.if it is a single number,the bottom number can be 1.
x is equal to the number you multiply m,or the slope by.
b is equal to where you start on the vertical line in the graph.a way to remember it is horizontal is like a horizon,it’s flat.
what is the equation of this line of best fit in slope intercept form
Option B:
Equation of the line of best fit in slope-intercept form is [tex]y=\frac{1}{2}x+1[/tex].
Solution:
Take two points on the line (0, 1) and (4, 3).
So, [tex]x_1=0, y_1=1, x_2=4, y_2=3[/tex].
Slope of the line:
[tex]$m=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]$m=\frac{3-1}{4-0}[/tex]
[tex]$m=\frac{2}{4}[/tex]
[tex]$m=\frac{1}{2}[/tex]
y-intercept means the point which crosses at y-axis.
Here the point on the y-axis is (0, 1).
y-intercept (b) = 1
Slope-intercept form:
y = mx + b
[tex]$y=\frac{1}{2}x+1[/tex]
Equation of the line of best fit in slope-intercept form is [tex]y=\frac{1}{2}x+1[/tex].
Option B is the correct answer.
Choose Yes or No to tell if the number 34 will make each equation true.
__ x 1/2 = 17
51 x 2/3 = __
__ x 3/8 = 12
300 x 1/9 __
Answer:
See below
Step-by-step explanation:
Let's check:
34*1/2 does equal 17, so Yes
51*2/3 does equal 34, so Yes
34*3/8 does not equal 12, so No
300*1/9 does not equal 34, so No
Which equation could be used to find the length of the hypotenuse?
5 ft
o 2²+5² = c²
0 2² +0²= 5²
O c²-2² = 5²
O 5²-2² = c²
Answer:
(base)² + (altitude)² = (hypotenuse) ²Therefore,
2²+5² = c² will be matched.
The equation that could be used to find the length of the hypotenuse is 2²+5² = c².
What is Pythagoras theorem?Pythagorean theorem is a fundamental relation in between the three sides of a right triangle.
It states that the area of the square whose side is the hypotenuse (the side opposite the right angle) is equal to the sum of the areas of the squares on the other two sides.
Given is right triangle we need to find an equation to determine the length of the hypotenuse,
To find the length of the hypotenuse of a right triangle you can use the Pythagorean theorem, that can be written as:
(base)² + (altitude)² = (hypotenuse)²
In this case, a=2, b=5 and c=c, so according to the Pythagorean theorem:
2²+5²=c²
Hence the equation that could be used to find the length of the hypotenuse is 2²+5² = c².
Learn more about Pythagoras theorem, click;
https://brainly.com/question/343682
#SPJ5
(May someone help me?)A store sold 6 and 1/5 cases of juice on Friday and 4 and 4/5 cases of juice on Saturday. How many more cases of juice did the store sell on Friday then on Saturday?
Final answer:
The store sold 1 and 2/5 more cases of juice on Friday than on Saturday.
Explanation:
To determine how many more cases of juice the store sold on Friday than on Saturday, we need to subtract the number of cases sold on Saturday from the number of cases sold on Friday.
Friday's sales: 6 and 1/5 cases
Saturday's sales: 4 and 4/5 cases
We convert these mixed numbers to improper fractions to make the subtraction easier:
6 and 1/5 = (6 × 5 + 1)/5 = 31/5 cases4 and 4/5 = (4 × 5 + 4)/5 = 24/5 casesNow we subtract the two fractions:
(31/5) – (24/5) = 7/5 cases
Convert the improper fraction back to a mixed number:
7/5 = 1 and 2/5 cases
So, the store sold 1 and 2/5 more cases of juice on Friday than on Saturday.
The total rainfall in March was 3.6 inches. In April, the total rainfall was as 1.4 times as much. What was the total rainfall in April?
Answer:
5.04 inches
Step-by-step explanation:
because the total rainfall in March was 3.6 inches and if the total rainfall in April was 1.4 times as much then you would take the total rainfall in March which was 3.6 inches and multiply that by 1.4 because it says the amount in April was 1.4 times as much.
The total rainfall in March was 3.6 inches. In April, the total rainfall was 1.4 times as much. The total rainfall in April is calculated by multiplying the March rainfall of 3.6 inches by 1.4, resulting in a total April rainfall of 5.04 inches.
Explanation:The total rainfall in March was 3.6 inches. In April, the total rainfall was 1.4 times as much. To calculate the total rainfall in April, you multiply the March rainfall by 1.4. So, the calculation you'd do is 3.6 inches (March rain) times 1.4. This gives you 5.04 inches of rainfall in April. So, the total rainfall in April was 5.04 inches.
Learn more about Rainfall Calculation here:https://brainly.com/question/31337778
#SPJ2
HELP ASAP question 5!!!
Step-by-step explanation:
Total area of merged figure = area of vertical rectangle + area of horizontal rectangle.
[tex] \therefore \: 3x(2x - 7) + (3x + 4)x = 85 \\ \\ \therefore \: 6 {x}^{2} - 21x+ 3 {x}^{2} + 4x = 85 \\ \\ \therefore \: 6 {x}^{2} + 3 {x}^{2} - 21x + 4x - 85 = 0 \\ \\ \huge \red {\boxed {\therefore \: 9 {x}^{2} - 17x - 85 = 0}} \\ hence \: proved.[/tex]
Answer:
Step-by-step explanation:
(3x + 4)(x) + (2x - 7)(3x) = 85
3x² + 4x + 6x² - 21x = 85
9x² - 17x - 85 = 0
Y2222222222222222222222222
Answer:
This is a statement not a question
A light bulb consumes 960 watt hours per day. How many watt hours does it consume in 3 days and 18 hours
Answer:
3600
Step-by-step explanation:
960*3=2880
To find how many per hour: 960/24= 40
40*18=720
720+2880=3600
Answer:
3600 watts
Step-by-step explanation:
960 multiplied by 3 , then divide 18 by 24. Multiply 0.75 by 960, and then add 2880 and 720.
What must be the length of ZY in order for ZY to be tangent to circle X at point Y?
14 units
15 units
16 units
17 units
Answer:
15 unitsStep-by-step explanation:
In the image attached you can notice that line ZY is tangent at point Y.
Remember that the radius is always perpendicular to tangents, by definition, that means [tex]XY \perp ZY[/tex].
That means [tex]\triangle XYZ[/tex] is a right triangle where [tex]\angle Y = 90\°[/tex].
All these facts are deducted form having ZY as a tangent.
We know by given that
[tex]XZ=8+9=17[/tex]
[tex]XY=8[/tex], becaus it's the radius.
Using Pythagorean Theorem
[tex]17^{2} =8^{2}+ZY^{2}[/tex]
Solving for [tex]ZY[/tex]
[tex]ZY=\sqrt{17^{2} -8^{2} } \\ZY=\sqrt{289-64}\\ ZY=\sqrt{225}\\ ZY=15[/tex]
Therefore, the length of ZY must be 15 units to be tangent to circle X.
Answer:
15 units
Step-by-step explanation:
The guy above me has got it right! :D
What is the probability that 13 people have different birthdays
Ming has two job offers, in different states. The first job (a marketing manager) earns a salary of $51,000 and there is no state income tax. The second job (a graphic designer) earns a salary of $54,000 and the state income tax rate is 6%. The government also takes out 6.2% for Social Security, 1.45% for Medicare, 15% for federal income tax. The health benefits are the same for both jobs. Which job should he take?
a. The marketing manager because it pays about $70 more each month.
b. The marketing job because it pays about $300 more each month.
d. The graphic design job because it pays about $250 more each month
10 points
Answer:
A. 1
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
The other dude did have the right answer, but for an explanation, you:
1. Take the 51,000 and multiply it by 22.65% (The sum of taxes for this job). You get 39448.5. You take 39448.5 and divide it by 12 (for monthly net income) and you get 3287.375 a month.
Then you:
2. Take 54,000 and multiply it by 28.65 (the sum of taxes for this job (remember that this job has an extra tax of 6%)). You get 38529. You take 38529 and divide it by 12 (for monthly net income) and you get 3210.75 a month.
Finally:
3. You just compare the monthly net incomes and see that marketing manager job pays around 70 more dollars a month. Hope that helped!
James has 4 test scores of 82, 77, 75 and 84. What score does James need on the next test to
have an average of 80? State what x represents, state the equation, and then state the answer.
Answer:
average = sum of observations/number
80=400/5
Therefore, the sum of the scores has to equal 400.
Step-by-step explanation:
400-(82+77+75+84)=x
400-(318)=x
x=82
That is the minimum score needed.
What rate of interest compounded annually is required to double an investment
in 18 years?
Answer:
[tex]r=3.93\%[/tex]
Step-by-step explanation:
we know that
The compound interest formula is equal to
[tex]A=P(1+\frac{r}{n})^{nt}[/tex]
where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest in decimal
t is Number of Time Periods
n is the number of times interest is compounded per year
in this problem we have
[tex]t=18\ years\\ P=x\\A=2x\\ r=?\\n=1[/tex]
substitute in the formula above
[tex]2x=x(1+\frac{r}{1})^{1*18}[/tex]
[tex]2=(1+r})^{18}[/tex]
Elevated both sides to 1/18
[tex]2^{\frac{1}{18}} =1+r[/tex]
[tex]r=2^{\frac{1}{18}} -1[/tex]
[tex]r=0.0393[/tex]
convert to percentage
Multiply by 100
[tex]r=3.93\%[/tex]