Answer:
The correct answer is A.
Step-by-step explanation:
1. 2(x+7)
2. 2(7+7)
3. 2(14)
4. 28
Hope this helps!
Answer:
a, c and d
Step-by-step explanation:
Mr. Brown’s bank account is overdrawn $110.55 and he deposits $18 a week. His wife has a separate account and her account is also overdrawn $63.12 and she deposits $22.50 a week. How many weeks will it be before Mr. Brown’s wife has more in her account than her husband?
Answer:
y=mx+b sdi c xc xx cx cx cxc xc 87
Step-by-step explanation:
pleasseee helllp meeee
Answer:
The third one
Step-by-step explanation:
Answer:
Y=3x
Step-by-step explanation:
I'm pretty sure it would be y=3x because you have to multiply the cost of the tickets by the number of tickets
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 12.3 years, and standard deviation of 0.7 years. If you randomly purchase 14 items, what is the probability that their mean life will be longer than 12 years?
Answer:
The probability is [tex]P(\= X > 12 ) = 0.72688[/tex]
Step-by-step explanation:
From the question we are told that
The mean is [tex]\mu = 12.3 \ years[/tex]
The standard deviation is [tex]\sigma = 0.7 \ years[/tex]
The sample size is n = 14
Generally the standard error of the mean is mathematically represented as
[tex]\sigma _{x} = \frac{\sigma}{\sqrt{n} }[/tex]
=> [tex]\sigma _{x} = \frac{0.7}{\sqrt{14} }[/tex]
=> [tex]\sigma _{x} = 0.1871[/tex]
Generally the probability that their mean life will be longer than 12 years is mathematically represented as
[tex]P(\= X > 12 ) = P(\frac{\= X - \mu }{\sigma} > \frac{12 - 12.3}{ 0.1871 } )[/tex]
[tex]\frac{\= X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ \= X )[/tex]
[tex]P(\= X > 12 ) = P(Z > -0.6034 )[/tex]
From the z table the area under the normal curve to the left corresponding to -0.6034 is
=> [tex]P(Z > -0.6034 ) = 0.72688[/tex]
=> [tex]P(\= X > 12 ) = 0.72688[/tex]
y'all helpppp on this question ASAP please!!!!
Paulo identifies one point on a line as (6,3), and he knows that the slope is 2. How can he derive the equation of the line
Answer:
y = 2x + 3
Step-by-step explanation:
Points (6,3) are x,y coordinates.
Use slope intercept form: y = mx + b
b = y intercept
m = slope
The equation that has a slope of 2 and passes through (6, 3) will be y = 2x - 9.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The slope of the equation is 2. Then the equation is given as,
y = 2x + c
The line is passing through (6, 3), then we have
3 = 2(6) + c
3 = 12 + c
c = 3 - 12
c = - 9
The equation will be given as,
y = 2x - 9
The equation that has a slope of 2 and passes through (6, 3) will be y = 2x - 9.
More about the linear equation link is given below.
https://brainly.com/question/11897796
#SPJ5
A hockey puck with a mass of 0.18 kg is at rest on the horizontal frictionless surface of the rink. A player applies a horizontal force of 0.5 N to the puck. Find the speed and the traveled distance 5 s later.
Answer:
1) The speed after 5 seconds is 13.[tex]\bar 8[/tex] m/s
2) The distance traveled after 5 seconds is 34.7[tex]\bar 2[/tex] meters
Step-by-step explanation:
1) The given parameters are;
The mass of the hockey puck, m = 0.18 kg
The horizontal force applied by the player, m = 0.5 N
The time at which the speed is calculated, t = 5 seconds after the force is applied
Therefore;
From the equation for the applied force, F = m × a. where a represents the acceleration, by substituting the known values get;
0.5 = 0.18 × a
∴ a = 0.5/0.18 = 50/18 = 25/9 = 2.[tex]\bar 7[/tex]
a = 2.[tex]\bar 7[/tex] m/s²
The speed after 5 seconds is given from the kinematic equation, v = u + a·t
Where;
v = The final velocity
u = The initial velocity = 0 m/s
t = The time = 5 seconds
By substitution of the known values, we get;
v = 0 + 2.[tex]\bar 7[/tex] × 5 = 13.[tex]\bar 8[/tex]
The speed after 5 seconds = 13.[tex]\bar 8[/tex] m/s
2) The distance traveled, s, after 5 seconds is given by the equation, s = u·t + 1/2·a·t²
From which we have;
s = 0 × 5 + 1/2 × 2.[tex]\bar 7[/tex] × 5² = 34.7[tex]\bar 2[/tex]
The distance traveled after 5 seconds = 34.7[tex]\bar 2[/tex] meters
2x + 3y = 19
EASY MATH PPL 20points..
Answer:
x=5 and y=3
Im pretty sure. The answer has to be 20 words long, so i am adding random words. Wheeeee
Answer: Y=5, X=2
2x2=4 and 3x5=15
4+15=19
Heather wrote her bike at a rate of 15 per second which graph best represents the relationship between this time in seconds Heather rode her bike, x, and the distance in feet she rode, y?
The graph will be linear with a positive slope if distance is increasing with time.
Relationship between distance and timeThe question is incomplete but I will try to help you the much I can. The speed of a body is the ratio of distance covered to the time taken. The shape of the distance time graph depends on the nature of the relationship.
Even though the graph is not shown, the graph will be linear with a positive slope if distance is increasing with time.
Learn more about distance - time graph:https://brainly.com/question/1378025
I WILL GIVE BRAINLIEST
Read the description of f below, and then use the drop-down menus to complete an
explanation of why f is or is not a function,
f relates each student in Mr. Well's history class to their score on a final exam.
Answer:
It’s because they become its not they are
Step-by-step explanation:
Rewrite the expression as the sum of two numbers
3(1+3)
Answer:
3 + 9
Step-by-step explanation:
Distribute the 3 to both numbers, so 3 x 1 = 3, and 3 x 3 = 9.
Sketch the graph of the function by (a) applying the Leading Coefficient Test, (b) finding the zeros of the polynomial, (c) plotting sufficient solution points, and (d) drawing a continuous curve through the points. 65.) f(x)=x^3-9x 66.) g(x)=x^4-4x^2
Answer:
C
Step-by-step explanation:
If its C I'm sorry That seems correct but I don't know for sure, just my advice!
What is the length of CD?
Answer:
5
Step-by-step explanation:
Use formula or count the steps since it's on the same line
What is the volume of the figure ?
Answer:
1360m³
Step-by-step explanation:
Break it into two rectangular prisms
find the volume of each prism and add both results
Look at this set of ordered pairs: (14, 19) (14, 5) (4, 18) Is this relation a function? yes no
Answer:
This is a relationship, and NOT a function
Step-by-step explanation:
Notice that from the pairs listed, we find that the number 14 in the Domain is connected via the relationship with TWO different numerical values in the Range (with 19 and with 5).Therefore, this cannot be a function, since in such case, each element of the Domain must connect with no more than one element of the Range.
In a two-digit number, the first digit is 5 less than the second digit. The number itself is three times the sum of its digits. What is the number? (I WILL MARK BRAINLIEST)
Answer:
27
Step-by-step explanation:
taking the second digit as 'x'
as per question the first digit is 'x-5'
therefore putting this in the one, tens, hundreds form
u multiply the first digit by 10 and the second by 1
therefore,
10(x-5) + 1(x)
now you have that the 2-digit number is equal to twice the sum of the digits,
so
10(x-5) + 1(x) = 3 [ (x-5) + (x) ]
on solving
10x - 50 + x = 3 (2x - 5)
11x -50 = 6x - 15
taking 6x on the right and -50 on the left
11x - 6x = 50 - 15
5x = 35
therefore x = 7
now substituting this value we get that the number is
27
Susie is paying $538.66 every month for her $150,000 mortgage. If this is a 30 year mortgage, how much interest will she pay over the 30 years of payments?
Answer:
Step-by-step explanation:
So First we know she pays (538.66) every month (12months in a year ) for (30) years
So 538.66*12*30 = 193,917.60
Then, we take his total payment minus the what he originally owed.
193,917.60 - 150,000 = $43,917.60
Susie's monthly mortgage payment on her $150,000 home is $538.66. If the loan has a 30-year term, the total interest she will have to pay throughout that time will be $43,917.60.
What is a mortgage?
A mortgage is, to put it simply, a contract that a person forms after borrowing money from a lender (in this case, a bank) and giving the lender a guarantee (in the form of a real estate property) that the money will be paid back in full.
So first one must know as she pays 538.66 every month as there are 12 months in a year and for 30 years, the payment calculation is:
538.66 × 12 × 30 = 193,917.60
Then, deduct the amount he originally owed from his total payment.
193,917.60 - 150,000 = $43,917.60
Therefore, the total interest she will have to pay throughout that time will be $43,917.60.
Learn more about mortgage from here:
https://brainly.com/question/8084409
#SPJ2
The following is a special trapezoid. Given WX is parallel to ZY. Which of the following is also true about trapezoid WXYZ?
∠W ≅ ∠Z
∠Z and ∠W are supplementary
∠W ≅ ∠X
∠X and ∠Y are complementary
Answer:
∠Z and ∠W are supplementary
Step-by-step explanation:
In the diagram given showing a special trapezoid, WX and ZY are two opposite sides that are parallel to each other.
Thus, consecutive angles would be supplementary.
Therefore, the only correct option that is true is:
∠Z and ∠W are supplementary.
The test options are incorrect as consecutive angles are not complementary and they are not in themselves congruent to each other.
They ARE supplementary so it WOULD be B <z and <w are supplementary
Tom has a solid, wooden block that is a rectangular prism with non-square bases. He saws the prism parallel to the base. What shape is the cross section?
rectangle not square
triangle
diamond
square
Answer:
A) Rectangle
Step-by-step explanation:
Hope this helps :D
If the cost of a competing factor of production, such as a machine that also could do the job, rises. This would result in a shift in the demand for this factor out to the right and would put pressure on the wage to rise. I don't understand why this is the case because I thought if machines replaced human labor then wouldn't wages be lower because there wouldn't be a need for human labor?
Keep in mind that we're framing it based on what the first sentence says, which is "If the cost of a competing factor of production, such as a machine that also could do the job, rises".
So if the cost of getting a machine part, various parts, or the entire machine cost rises, then demand for the machine will go down. This will make employers seek out substitutes. In this case, those substitutes would be human labor. As employers demand for labor goes up, the wages will rise assuming the supply of workers is held constant. If the supply of workers increased, then you could argue the wages could go down. So that's why I'm assuming the supply is held in check.
a refrigerator was originally sold for $360 and has been markdowned to $270. what is the percentage of the discount for the refrigerator? ____%
Step-by-step explanation:
percentage discount = (360 - 270)/360 x 100% = 25%
Topic: Percentage
You can check out my insta (learntionary) for the formula for these types of questions or look for other cool math tips!
How do the expressions 72 divided and -72divided by (-9) and compare when they are evaluated?
Complete question is;
How do the expressions 72 divided by 9 and -72 divided by (-9) compare when they are evaluated?
A. They have different values and are different signs.
B. They have different values but are the same sign.
C. They have the same value but are different signs.
D. They have the same value and the same sign
Answer:
D. They have the same value and the same sign
Step-by-step explanation:
For 72 divided by 9,it is;
72/9 = 8
Usually when we don't have any sign in front of a number, it is said to be positive.
Thus, the answer can be expressed as; +8
Also, when -72 is divided by (-9), it is;
-72/-9
The negative signs will cancel out to give; 8
Similar to the first division, since no sign is attached to 8,it is said to be positive as +8.
This means both divisions yield same values and same signs
When performing a translation you _____________ the movements to your x and y values of the coordinates. Select all that apply.
Multiply
Divide
Subtract
Add
The unit rate of video games is ?
How much would you pay for 10 video games?
Answer:
you will pay $75
Step-by-step explanation:
The product of two consecutive even integers is 8. Find the integers.
Note: each set of brackets represents one solution.
Answer:
-4 and -2
2 and 4.
Step-by-step explanation:
Let n be the first even integer.
Then the consecutive even integer will be represented by (n+2).
We know that their product is 8. So:
[tex]n(n+2)=8[/tex]
Solve for n. Distribute:
[tex]n^2+2n=8[/tex]
Subtract 8 from both sides:
[tex]n^2+2n-8=0[/tex]
Factor:
[tex](n+4)(n-2)=0[/tex]
Zero Product Property
[tex]n+4=0\text{ or } n-2=0[/tex]
Solve for n for each case:
[tex]n=-4\text{ or } n=2[/tex]
Hence, we will have two correct solutions.
Case 1: -4 and -2. -4(-2) is indeed 8.
Case 2: 2 and 4. 2(4) is also 8.
Hence, our solutions are:
-4 and -2
2 and 4.
Use the Remainder Theorem to find f(c).
f(x) = 5x5 + 2x3 - 5x2 - 3
C = 1
Answer:
f(c) = 5(c)^5+2(c)^3-5(c)^2-3
c = 1
F(1) = -1
Step-by-step explanation
1 → 5 0 2 -5 0 -3
↓ 5 5 7 2 2
5 0+5 2+5 -5+7 0+2 -3+2
5 5 7 2 2 -1
f(1) = 5(1)^5+2(1)^3-5(1)^2-3
f(1) = -1
What direction would this plate move?
Question 6 options:
A West to East
B East to West
C South to North
D North to South
The library has 27 chairs and 5 tables. If the same nur chairs can be placed at each table? Will there be any
Answer:
no
Step-by-step explanation:
27 divided by 5 = 5.4 so there would not be enouph
Answer:
Each table will have 5 chairs, with 2 chairs leftover.
Step-by-step explanation:
27 divided by 5 equals 5 with a remainder of 2.
Which statement is true about points located in quadrant I in the coordinate
plane?
A. The x-coordinate is negative, and the y-coordinate is negative.
B. The x-coordinate is positive, and the y-coordinate is positive.
C. The x-coordinate is positive, and the y-coordinate is negative.
O D. The x-coordinate is negative, and the y-coordinate is positive.
Please hurry
Answer:
B
Step-by-step explanation:
In Quadrant I, both the x– and y-coordinates are positive; in Quadrant II, the x-coordinate is negative, but the y-coordinate is positive; in Quadrant III both are negative; and in Quadrant IV, x is positive but y is negative.
Answer: its actually A
Step-by-step explanation:
Its not b it is A The x-coordinate is negative, and the y-coordinate is negative
8.9 x 7 can u solve it with work shown
Answer:
62.3
Step-by-step explanation:
6
8.9
*7
____
62. 3
I tried to show how to do it but carry the 6 at the top
Answer:
64 (I rounded btw)
Step-by-step explanation:
8.9 × 7 = ??
1. Round 8.9
2. 8.9 can be rounded to 9
3. change equation
4. 9×7= 63
Thus, your answer is 63
(If your supposed to do the math differently tell me and I'll correct it)
Which of the following is NOT true about cluster sampling?
A.
B.
C.
D.
Answer:
c
Step-by-step explanation:
Answer:
The correct answer is A
Step-by-step explanation: