Factor [tex]x^2-81[/tex] by using the difference of two squares.
[tex]x^2-y^2=(x+y)(x-y)[/tex]
Our x is x
Our y is 9 (As y² = 81, therefore a single y would be 9)
[tex](x+9)(x-9)[/tex]
Thus, the final answer is (x+9)(x-9)
Tim predicts he will get 98 points on the next exam. If Tim actually earned 62 points, what was Tim's percent error?
Answer:
If Tim actually earned 62 points . Therefore Tim's percent error is 58.1 % .
Step-by-step explanation:
what is 7%o of 14.68
Answer:
1.03
Step-by-step explanation:
i multiplied 14.68×.07
hope this is correct and helps
Answer:
1.03
Have a good day! :)
Can someone pls help
Answer: Graph A and Graph C hope this helps
Step-by-step explanation:
Answer:
A and C
Step-by-step explanation:
They both pass though the origin.
Fill in the blank to solve the expression!
-(-8) = ____
Answer:
The answer is 8
Step-by-step explanation:
Multiply -1 by -8
K(x)= -x^2 inverse function SHOW WORK PLEASE HELP FAST
Steps:
See attachment.
Description:
The first step is to simplify the equation step by step and to simplify an equation you can first multiplying the factors and use the exponent rules to remove the parentheses. After that you need to combine it a terms. Then you will get your answer.
For more steps and graph see the attachment.
Answer: k=−x
Hope this helps.
In a certain chemical, the ratio of zinc to copper is 4 to 19. A jar of the chemical contains 760 grams of copper. How many grams of zinc does it contain?
1) 760 grams
2) 3,610
3) 30,400
4) 190 or 160 grams
find the answer in simplest form 3/7x2/3
Answer:
7 6/7 or 7.8571429
Step-by-step explanation:
The simplest form of the given expression (3/7) x (2/3) is 2/7.
The expression is given as:
(3/7) x (2/3)
The numerator will be 3 x 2 = 6, and the denominator will be 7 x 3 = 21.
So, the simplified form of (3/7) x (2/3) is 6/21.
However, we can further simplify this fraction by dividing both the numerator and denominator by their greatest common divisor (GCD), which is 3.
Dividing 6 and 21 by 3 gives us 2 and 7 respectively.
Therefore, the simplest form of (3/7) x (2/3) is 2/7.
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Find the slope between the two points.
(4, 2) and (3, 8)
Plz help ASAP
Answer: -6
Step-by-step explanation: 8-2= 6 and 3-4= -1. So 6/-1 is -6
What is an equation of the line that passes through the point (-1,-7) and is perpendicular to the line x+y=6x
Wind Mountain is an archaeological study area located in southwestern New Mexico. Potsherds are broken pieces of prehistoric Native American clay vessels. One type of painted ceramic vessel is called Mimbres classic black-on-white. At three different sites the number of such sherds was counted in local dwelling excavations. Site I Site II Site III 28 47 46 54 22 27 44 65 40 16 56 22 21 17 58 36 state the null hypothesis
Answer:
The null hypothesis would be
H0: μ1=μ2=μ3 (all the means of the three sites are equal)
Step-by-step explanation:
Site I Site II Site III
28 47 46
54 22 27
44 65 40
16 56 22
21 17 58
36
The null hypothesis would be
H0: μ1=μ2=μ3 (all the means of the three sites are equal) against the claim
Ha: μ1≠μ2≠μ3 (all the means of the three sites are not equal)
Which if H0 is true, has an F -distribution with v1=k-1 and v2= n-k degrees of freedom.
ANOVA (one way of analysis of variance ) can be applied to test this hypothesis.
Please Help These Are All My Points.
Find the value of X, then find AB and DC.
(opposite sides are congruent)
AB= 3x+8
DC= x+12
Answer:
x = 2
AB = 14
DC = 14
Step-by-step explanation:
If opposite sides are congruent, then:
AB = DC
AB = 3x + 8
DC = x + 12
Thus:
3x + 8 = x + 12
Collect like terms
3x - x = -8 + 12
2x = 4
Divide both sides by 2
x = 2
AB = 3x + 8
Plug in the value of x
AB = 3(2) + 8 = 14
DC = x + 12
Plug in the value of x
DC = 2 + 12 = 14
Find - square root 49
+7
7
-7
24.5
Easy points please put answer
Answer:
7?
Step-by-step explanation:
Bank teller has 500 bills totalling $8100.00. How many tens and twentys does she have
Answer:
$20 bills = 310, $10 bills = 190
Step-by-step explanation:
To solve this problem, we must make a system of equations
Let x = the number of $20 dollar bills and let y = the number of $10 dollar bills
A $20 bill is 20 dollars and a $10 dollar bill is 10 dollars. The money added together will equal $8100, so an equation for this would be:
20x + 10y = 8100
The number of 20 dollar bills and 10 dollar bills added together will be 500 bills, so that equation would be:
x + y = 500
Now we have our system of equation! To solve this, we will use substitution.
If x + y = 500, then x = 500 - y.
We can substitute this into x in the first equation.
20x + 10y = 8100 will become:
20(500 - y) + 10y = 8100
10000 - 20y + 10y = 8100
10000 - 10y = 8100
We can add 10y to both sides and subtract 8100 from both sides
1900 = 10y
Now divide both sides by 10.
190 = y
There are 190 10 dollar bills.
Plugging this value into the equation, we have:
x + y = 500
x + 190 = 500
Subtract 190 from both sides
x = 310
There are 310 20 dollar bills
Find the volume of a region bounded by the functions y = 2x + 6, the y-axis, and the x-axis as it revolves
around the x-axis.
GRAPH !
V=
units3
(round to the nearest tenth)
The bounded region in question is a triangle in the second quadrant. The line y = 2x + 6 has intercepts (0, 6) and (-3, 0), so revolving the triangle about the x-axis forms a cone with height 3 and whose circular base has radius 6. Its volume would then π/3 • 6² • 3 = 36π ≈ 113.1 units³.
But you're probably supposed to use calculus. Using the disk method, the integral for the volume is
[tex]\displaystyle V=\pi\int_{-3}^0 (2x+6)^2\,\mathrm dx[/tex]
[tex]\displaystyle V=\pi\int_{-3}^0(4x^2+24x+36)\,\mathrm dx[/tex]
[tex]V=\pi\left(\dfrac43x^3+12x^2+36x\right)\bigg|_{-3}^0=\boxed{36\pi}[/tex]
as expected.
Rhoda and James both sell laptops and earn commission based on the number of laptops sold. In one month, Rhoda
earns $2000 in commission for selling 10 laptops and has a base salary of $600. The money James earns for selling
laptops in the same month is shown in the graph below.
Answer: James earns $50 more in commission than Rhoda for each laptop sold.
Step-by-step explanation:hope it helps
James earned $50 more than Rhoda.
What is Data?A collection of information obtained through measurements, study, observations, or analysis is referred to as data. Facts, numbers, names, figures, or even descriptions of things may be included. In the form of graphs, charts, or tables, data is arranged.
Basic facts and entities like names and numbers are referred to as data. Weights, costs, sales volume, employee names, product names, addresses, tax identification numbers, and registration marks are just a few types of data.
Given:
In one month, Rhoda earns $2000 in commission for selling 10 laptops.
For, one laptop = 2000/10
= 200
Now, as from the graph
In one month, James earns $2500 in commission for selling 10 laptops.
For, one laptop = 2500/10
= 250
So, James earned $50 more than Rhoda.
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Consider the distance formula d=16t^2 where d is the distance in feet that an object travels and t is the time in seconds that it travels. How long does it take an object to travel 624 feet?
best answer gets brainliest,
Answer:
The Formula D 16t 2
The formula s=16t^2 is used to approximate the distance s, in feet, that an object falls freely from the rest in t seconds. The height of a building is. The formula s=16t^2 is used to approximate the distance s, in feet, that an object falls freely from the rest in t seconds.
Step-by-step explanation:
3 regular pizzas and 2 small pizzas cost $31.
9 regular pizzas and 8 small pizzas cost $103.
What's the cost of 1 regular pizza?
What's the cost of 1 small pizza?
first of all, lets set up the equation
3x + 2y = 31
9x + 8y = 103
+--------------------
now make them equal
12x + 8y = 124
9x + 8y = 103
+----------------------
x=7
y=5
PLZ ANSWER IF U KNOW THE ANSWER
Answer: its b
Step-by-step explanation:
Answer:
B.
Step-by-step explanation:
A survey showed that 70% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 7 adults are randomly selected, find the probability that exactly 2 of them need correction for their eyesight.
Answer:
0.0250047
Step-by-step explanation:
Given that :
Proportion who need correction glasses = 70%
Number of trials = 7
Probability that exactly 2 needs correction glasses :
Using a binomial probability formula :
P(success) = p = proportion who need glasses = 0.7
P(x =x) = nCr * p^x * (1 - p)^(n - x)
P(x = 2) = 7C2 * 0.7^2 * 0.3^(7 - 2)
P(x = 2) = 7C2 * 0.7^2 * 0.3^5
P(x = 2) = 21 * 0.49 * 0.00243
P(x = 2) = 0.0250047
Will mark the brainliest
Answer:
C.
X = -5
Step-by-step explanation:
Solve 4e^1+3x-9e^5-2x=0
Answer:
its 24x trust me I did this
Which statement(s) most directly apply to capitalism?
1. There is heavy government regulation of industry.
II. Individuals can start some, but not all, kinds of enterprises.
III. The price and availability of goods is determined primarily by the market.
a. I and II
b. ll only
c. I and III
d. Ill only
Answer:
The answer is D, lll only.
Step-by-step explanation:
Just took the test on e d g e!
The statement that most directly applies to capitalism is III only.
Option D is the correct answer.
What is capitalism?It is a system of the economy where means of production and distribution are owned by the private, not the government.
We have,
The economic system of capitalism is characterized by private ownership of the means of production and distribution of goods and services, as well as the profit motive as the driving force behind economic activity.
Based on this definition, statement III most directly applies to capitalism, as it highlights the central role of market forces in determining prices and availability of goods.
On the other hand,
Statement I, which suggests heavy government regulation of the industry, is not a typical feature of capitalism, as it implies a more interventionist approach by the government in the economy.
Capitalism generally favors a more limited role for the government in economic affairs, although some government regulations may still be present.
Statement II, which suggests that individuals can start some, but not all, kinds of enterprises, is also not a defining characteristic of capitalism.
In a capitalist system, individuals are generally free to start any kind of enterprise that they wish, provided they can obtain the necessary resources and meet any legal or regulatory requirements.
Therefore,
The statement that most directly applies to capitalism is III only.
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Find the measure of angle A.
Answer:
30 degrees
Step-by-step explanation:
Keep this in mind, ALL triangles must equal 180 degrees.
This is an acute triangle, hence one of the angles is 90 degrees. To find the other two angles, we must solve for x. Since we know the sum of all angles in this triangle must equal 180 degrees, we know for setting up our equation, all the angles should equal 180.
[tex]90 + (x+37) + (x+67) = 180\\[/tex]
Now solve for x by isolating x
[tex]2x + 194 = 180\\2x=-14\\x=-7[/tex]
Our x is -7, now that we know that the numerical value of x is -7, replace x with -7 for angle A.
-7 + 37 = 30
<A is 30 degrees.
Check your work
Plug in -7 where you see x.
[tex]90 + (x+37) + (x+67) = 180\\90 + (-7+37) + (-7+67) = 180\\90 + 30 + 60 = 180\\180 = 180[/tex]
Turns out this was a 30-60-90 triangle. ✅
Polly buys 14 cupcakes for the party. the bakery puts them into boxes that hold 4 cupcakes each.
how many boxes will be needed for Polly to bring all the cupcakes to the party? Explain
Answer:
11 boxes
Step-by-step explanation:
14 didived by 4 is 10.25 so if you round you should get 11 .
Answer:
4, If you round.
Step-by-step explanation:
If you divide the 14 by 4, you get 3.5 and you can't really break the box in half.
So, you would have to use 5.
Identify the linear function with a slope of -2 and a y-intercept of 1?
a. - 2y = x +1
b. y=-2x
c. y = x-2
d. y=-2x+1
it's d just put them together to equal y
enter the value for x
Step-by-step explanation:
or, 2x° + (3x +5)° = 90° [ Complementary angles]
or, 5x° + 5 = 90°
or, 5x° = 90°- 5
or, x = 85/5
: x=17°
After retirement from the service a man received some amount from his provident fund. He gave two-fifth of the amount to his son, one-third of the amount to his daughter and remaining ₹15,000 to his wife. Find the amount the man received from the provident fund.
Answer:
F
Step-by-step explanation:
Ghstgnmootfwr
What is the x -coordinate of the x-intercept of the function 2/3y=−6x+12?
Answer:
y=9x+18
Step-by-step explanation:
to get 9, use the rise over run way. Using that, I got 9/1, which is equivalent to 9. Then you MUST add x after, so then you get 9x. The last number is always the y intercept, or where the line meets the vertical line. That was 18.
Hope I helped :)
39.4 x 1.7 I don’t how workout this out
Answer:the answer is 66.98
Step-by-step explanation:
