Represent the following sentence as an algebraic expression, where "a number" is the letter x. You do not need to simplify.
The sum of 7 and the cube of a number.
The sum of 7 and the cube of a number.
Answer:
Step-by-step explanation:
7 + x³ is the sum of 7 and the cube of a number x
A sporting goods store has shoes on sale for 20% off the regular price. Brantley finds a pair of shoes with a regular price of $35. He wants to know the sale price of the shoes. 0) Drag the given information into the table to represent the problem. Regular Price % $ Sale Price Discount % % S $ $35 $ ? 20%
Answer:
$28
Step-by-step explanation:
Given that :
Regular price = $35
Discount = 20%
Sale price = Regular price - Discount on sale
Discount on sale = 20% * regular price
Discount on sale = 0.2 * $35 = $7
Sale price = $35 - $7 = $28
Answer:
Regular price is 35 and discount is 20% and sale price is ?
Regular price is 35 and the discount is 7 and the sale price is 28
Step-by-step explanation:
I did the I-ready already
Evaluate the expression when x= -2.
х2+бх+9
Answer:
1
Step-by-step explanation:
x = - 2
x^2 + 6x + 9
= ( - 2 )^2 + 6 ( - 2 ) + 9
= 4 - 12 + 9
= 4 + 9 - 12
= 13 - 12
= 1
PLEAE HELP ME I REALLY NEED IT!!!!!!!!!
Select the correct answer.
Which phrase best describes taxable income?
Answer:
The correct answer is D.
Step-by-step explanation:
Taxable income is the income that is reached by taxes established by the government, that is, those sums of money from individuals that the government levies with a tax contribution. The so-called deductions are deducted from these sums, with which the apportionment between taxable income and deductions results in the final amount of taxes to be paid.
NO LINKS
Which equation is the equation of the least squares regression line that most closely matches the data set?
Answer:
y = 3.5X - 6921.2
Step-by-step explanation:
Given the data :
X :
1990
1992
1994
1996
1996
Y :
45
51
57
61
75
Using an online regression calculator ; the regression model obtained is : y = 3.5X - 6921.2
Where ; slope = 3.5 ; intercept = - 6921.2
A coin collection consists of nickels, dimes and quarters, and has a total value of $3.30. There are three times as many nickels as quarters. How many coins of each kind are there if the numbers of dimes is three less than the average of the number of nickels and number of quarters
Answer:
18 nickels, 9 dimes, and 6 quarters.
Step-by-step explanation:
Answer:
18 nickels, 9 dimes, and 6 quarters
Step-by-step explanation:
Suppose that only 2 percent of all people are geniuses. If an IQ test indicates that Albert is a genius, but the test is only accurate 90 percent of the time, then the probability that Albert really is a genius is roughly:
Answer:
P = 1,8 %
Step-by-step explanation:
From the whole population, only 2% are geniuses. But test results, are accurate 90 %. So the probability that Albert really is a genius is:
P = 0,02 * 0,9
P = 0,018 or P = 1,8 %
The explicit formula for a geometric sequence is an=3(-2)n-1. What is the fifth term of the sequence
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Answer:
a5 = 48
Step-by-step explanation:
To find the 5th term, put 5 where n is in the formula and do the arithmetic.
[tex]a_5=3(-2)^{5-1}=3(-2)^4=3(16)\\\\\boxed{a_5=48}[/tex]
Answer:
the answer is
a5=48
Step-by-step explanation:
:)))
Find area of this figure 3 ft 4 ft 5ft
Answer:
26.14
Step-by-step explanation:
For the triangles: 3*4=12
For the circle: 28.27/2=14.135
12+14.135=26.135
~26.14
Jennifer has a collection of 1,600 coins. Of the coins, 40% are dated before 1940, 35% are dated from 1940 to 1980, and the rest are dated after 1980. How many coins in Jennifer’s collection are dated after 1980?
Answer:
Step-by-step explanation:
40% + 35 % = 80 % so 20% are dated after 1980
20% is .20 in decimal form
.20 (1600) = 320 coins dated after 1980
Pls I need alot of help
Grace and her friends are playing a game that uses two dice. Each die is a tetrahedron –
a four‐sided shape with each side an equilateral triangle. Each side of the die contains
one of the digits 1, 2, 3, or 4.
a. Create the sample space of all possible outcomes if you were to roll the two dice
simultaneously. List the digit on the first die first and the digit on the second die
second (i.e. 1,1; 1,2; and so on.) (10 points)
b. What is the theoretical probability that the sum of the two numbers on a roll will
be five? (2 points)
c. If Grace and her friends were to roll the two dice 100 times, how many of the
100 times could they expect to roll the same number on each die? (In other
words, the outcome would be 1,1 or 2,2 or 3,3 or 4,4.) (4 points)
Answer:
Step-by-step explanation:
Very interesting problem. Be thankful it is not a six sided dice.
Part A
1 1
1 2
1 3
1 4
2 1
2 2
2 3
2 4
3 1
3 2
3 3
3 4
4 1
4 2
4 3
4 4
Part B
There are 16 possible out comes
1 4
4 1
2 3
3 2
4 out of the 16 outcomes are possible
P(5) = 4/16 = 0.25
Part C
The theoretical out come would be 4 times
4/16 = 0.25
On a hundred rolls, you would expect to get 25 sets of doubles.
Answer:
The correct answers are:
a.
1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4
3 1 3 2 3 3 3 4 4 1 4 2 4 3 4 4
b.
4 possible outcomes!
c.
25 sets!
Step-by-step explanation:
a.
Try making a probability by using the counting principle method.
1 1 1 2 1 3 1 4 2 1 2 2 2 3 2 4
3 1 3 2 3 3 3 4 4 1 4 2 4 3 4 4
These numbers are the possible outcomes. Each 2 numbers stand for 1 outcome.
b.
16 possible outcomes
1 4 4 1 2 3 3 2
4/16 possible
P(5) = 4/16 = 0.25
c.
The theoretical outcome = 4 times
4/16 = 0.25
25 sets of rolls are expected to be rolled on the same number per 100 rolls.
I hope this helps! Have a good day ;)
Please mark this as brainliest please! I would appreciate it! :)
Please help!!! I've been trying to figure this out all day!
The American College of Sports Medicine considers age as one factor when it recommends low and
high heart rates during workout sessions.
For safe and efficient exercise, your heart rate should be between 55% and 90% of the maximum
heart rate level. The maximum heart rate is calculated by subtracting a person's age from 220
beats per minute.
(Let a represent a person's age and h represent the person's recommended heart rate.)
1. The following equation represents the low value for heart rate. Simplify the equation.
h = .55(220-a)
2. The following equation represents the high value for heart rate. Simplify the equation.
h = .90(220-a)
3. Use these two expressions to write a system of inequalities that represents the heart rate range
for safe and efficient exercise. (Hint: you need to write two separate inequalities)
Answer:
.55(220-a) + .90(220-a)
Step-by-step explanation:
what is the range function 2x +y=7 if the domain is (-4,-2,0,5,7)
Answer:
range: {15, 11, 7, -3, -7}
Step-by-step explanation:
when x = -4, y = 15
when x = 2, y = 11
when x = 0, y = 7
when x = 5, y = -3
when x = 7, y = -7
50 POINTS PLEASE HELP
A normal work day for Carl is from 8:00 a.m. to 4:30 p.m. Carl wants to figure out the degree measure that the hour hand makes while he is at work. Carl believes that if he divides 360 by 12 and multiplies the result by 8.5 he will have the correct degrees the hour hand moves. Is Carl correct? If not, choose the appropriate explanation.
A
Yes, Carl is correct. The process he takes will give him the correct degrees the hour hand moves.
B
No, Carl is incorrect. He must take the number he ends up with and subtract it from 360.
C
No, Carl is incorrect. The hour hand will go around the clock 360 degrees.
D
No, Carl is incorrect. He must first multiply 360 by 12 and then divide by 8.5.
Answer:
The answer is B brainliest?
Step-by-step explanation:
which quadrant would contain the point -3, 3
please help!
thankyou!
Answer:
Quadrant 2
Step-by-step explanation:
(-3,3) when plotted on a graph fits into quadrant 2!
Five friends built a marble tower. The marble tower had a curved track. The track was designed so that the marbles would move down the track in a circular path. The track ended on the floor. Each friend predicted how he or she thought the marble would move when it rolled off the end of the track onto the floor. This is what they said:
Answer:
The best answer is of Keira's.
Step-by-step explanation:
The full question is as follows :
Given - Each friend predicted how he or she thought the marble would move when it rolled off the end of the track onto the floor.
This is what they said:
Magda : '' I think it will roll in circles.''
Soledad : '' I think it will curve for a bit and then straighten out.''
Allen : '' I think it will roll out in one big curve.''
Keira : '' I think it will roll in a straight line,''
Rafael : '' I think it will zigzag for a little while.''
To find - Which friend do you most agree with ?
Proof -
The best answer is Keira's.
The marble having the track will travel in a straight line.
The behavior is true for all objects.
If no outside force act on an object, the object will travel in a straight line at a constant speed.
When the marble leaves the end of the track, it is no longer in contact with the walls of the track.
That is , the marble has no longer a center-pushing force.
According to Newton's First law, an object remains at rest or in uniform motion in a straight line unless acted upon by an external force.
Since, there is no longer a center-pushing force so the marble rolls off the end of the track in a straight line path across the floor.
HELP PLEASE!!
To show that 4 points are the vertices of a square, which of the following must be shown?
Answer:
each side is 90 degrees
Step-by-step explanation:
make the brainliest?
u = 9i – 6j
v = 7i + 4j
A) 63.43°
C) 173.66°
B) 109.48°
D) 101.31°
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Answer:
A) 63.43°
Step-by-step explanation:
The two vectors in polar form are ...
u = (√(9²+6²))∠arctan(-6/9) = √117∠-33.69°
v = (√(7²+4²))∠arctan(4/7) = √65∠29.74°
The angle between the two vectors is ...
29.74° -(-33.69°) = 63.49°
plzzzzzz help for a brianly
Answer:b
Step-by-step explanation:
Question is in image
Answer:
4x + 8x = 180
12x = 180
x = 15
Geraldo has 3 fewer marbles than Yan Together, they have 21 marbles which equation
represents this situation?
21, where is the number of marbles Yan has
*+ * - $) = 21, where is the number of marbles Geraldo has
*+ (8-2) = 21, where is the number of marbles Geraldo has
*+ * -3) = 21, where a is the number of marbles Yan has
Can someone help me really please
Answer:
Step-by-step explanation:
question
Answer:
the tank at the pet store
Step-by-step explanation:
5x4x2 = 40
35<40
PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS HELP
Answer:
2.26
Step-by-step explanation:
The volume of a cylinder is equal to pi*r^2*h
3.14*r^2*25=400
r^2=5.09554140127
r~2.26
Answer:
Step-by-step explanation:
r= roughly 2.26
r= square root v/pi x height
What is equavalent 3 11/40.
The best estimate close to this answer 3 11/40
A. 2 1/2
B. 3 Plzz help me
C. 3 1/2
D. 4
Answer:
C. 3 1/2Step-by-step explanation:
Estimate the fraction part of the number.
11/40 > 10/40 = 1/4We can estimate the fraction part as 1/2 since its greater than 1/4.
The number becomes 3 1/2.
Best choice is C
Answer:
11/40>10/40=1/4 is a part of ½
so
best estimate is 3 ½.
which function is represented in this graph
Answer:
C. f(x) = |x + 5| - 1
The data are from a small moving company that moves people from urban apartment buildings to other urban apartment building in the same or different cities. The company needs assistance in predicting the labor hours for jobs so they can provide more accurate price quotes.
Run two separate regressions using the data in the sections of the spreadsheet titled Regression Model 1 and Regression Model 2. Use a 95% confidence level.
Fill in all the blanks below. Do not round any numbers except for when entering them in the blanks for this quiz, round these numbers to exactly 2 decimal places even if the number has only one or no decimal places. Use commas to separate thousands (e.g., 1225 should be entered as 1,225.00).
Regression Model 1
R Square expressed as a percentage rounded and carried out to two decimal places is ________% and Adjusted R Square expressed as a percentage rounded and carried out to two decimal places is _______%. Refer to the spreadsheet embedded in your Module 14 Regression document I provided you to see the calculation and format for answering this next question. The gap between R Square and Adjusted R Square expressed as a percentage rounded and carried out to two decimal places is 0.______%.
The overall regression model (was / was not) _______ significant.
Using square footage of 1,500 and mileage of 92, the model estimates that ______ hours of labor would be required, with a margin of error of _________ hours.
Regression Model 2
R Square expressed as a percentage rounded and carried out to two decimal places is _______% and Adjusted R Square expressed as a percentage rounded and carried out to two decimal places is _______%. Refer to the spreadsheet embedded in your Module 14 Regression document I provided you to see the calculation and format for answering this next question. The gap between R Square and Adjusted R Square expressed as a percentage rounded and carried out to two decimal places is 0.________%.
The overall regression model (was / was not) __________ significant.
Using square footage of 1,500, mileage of 92, and floors of 71, the model estimates that _________ hours of labor would be required, with a margin of error of ________ hours.
Model Selection
Because the R Square is (higher / lower) _________ in regression model 1 than in regression model 2 and the gap between R Square and Adjusted R Square is (smaller / larger) in regression model 1 than in regression model 2 _________ and the margin of error of the estimated labor hours is (smaller / larger) _________ in regression model 1 than in regression model 2 , we would characterize regression model (1 or 2) ___________ as being the better model.
Answer:
I wish I can read all the text
Plsss help me, ASAP, Thank you
Answer:
[tex]\frac{1}{16}[/tex] [tex]\frac{10}{9}[/tex]
Step-by-step explanation:
a reciprocal is a number that when multiplied by a given number gives 1 as product.
16 * x = 1
x = 1/16
9/10 * x = 1
x = 10/9
plsss help. giving extra points if correct.
i accidentally clicked A so don't think its the answer I wanted.
HELP PLEASE!!
Explain the error in the following exercise;
then correct it.
Answer:
2/1x7/6=14/6=7/3
Step-by-step explanation:
Multiply the 2 by the 7 but Not the 6. So the second number is 14/6, not 14/12.
‘Then simplify 14/6 to 7/3
Plz help this is due today NO LINKS OR GROSS PICTURES OR I Will REPORT And please show work
Answer: 8 is the total volume i think pls dont judge me if im wrong
Step-by-step explanation: