Select the correct location on the image.
Hayden evaluated this expression using the order of operations, but he made a mistake. Which step includes Hayden’s mistake?
Answers
Answer:
5
Step-by-step explanation:
Answer:
step 5 is incorrect
Step-by-step explanation:
14+9=23
Related Questions
Determine whether y varies directly with x. If so, find the constant of the variation.
y=7/x
Answers
Answer:
Direct variation is modeled by
... y = k·x
Then the value of k can be found by finding the ratio of any corresponding pair of numbers from your table. I find it convenient to choose the one where x=10, so the math is easy to do mentally.
... y/x = k
... 16/10 = k = 1.6
Then the equation is
... y = 1.6x
_____
Checking the other values in the table, we find that this equation fits all of them, so you do have direct variation.Step-by-step explanation:
Convert 18% to a fraction in lowest term
Answers
Answer:
[tex]\frac{9}{50}[/tex]
Step-by-step explanation:
This is the answer because:
1) 185 equals to [tex]\frac{18}{100}[/tex] because 18% is equal to 0.18 which is [tex]\frac{18}{100}[/tex]
2) [tex]\frac{18}{100}[/tex] to it's lowest terms is [tex]\frac{9}{50}[/tex]
3) It's lowest terms is [tex]\frac{9}{50}[/tex] because 18/2 is 9 and 100/2 is 50
4) [tex]\frac{9}{50}[/tex] can't be simplified any further because 9 and 50 don't have any common factors
Hope this helps! :D
The distance from Chicago to NY is 794 miles what is 794 rounded to nearest hundred
Answers
Answer:
794 rounded to the nearest hundred is 800.
Step-by-step explanation:
The round off value of 794 is 800 miles.
What is Round off?While rounding is a broad concept, we typically use the terms 'round up' or 'round down' to indicate whether the number has increased or reduced following rounding. When the rounded number is increased, the supplied number is said to be rounded up, and when it is dropped, it is said to be rounded down.
We have,
The distance from Chicago to NY is 794 miles.
As, we know to round off we have to focus on the number is greater than 5 or less than 5.
Now, to round off 794 nearest hundred it lies between 700 and 800.
Learn more about round off here:
https://brainly.com/question/13391706
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Randal's dad is installing a new pool in their backyard. The pool is a square and has an area of 121ft2. Randall's dad will then build a 4ft wide deck to surround the pool. What is the outside perimeter of the deck?
A. 28 ft.
B. 100 ft.
C. 75 ft.
D. 44 ft.
Answers
Answer:
I think it's 44
Step-by-step explanation:
mandy has 50 toy cars. 20% of the cars are silver. How many cars are silver?
Answers
A company paid $48 for 2 cases of printer paper. Each case contained 12 packages of paper. Next month the company’s office manager needs to order 180 packages of the same paper. If the price per package does not change, what would be the total cost of next month’s order?
Answers
Answer:
$360.
Step-by-step explanation:
First we need to find how much it costs for a single case of printer paper.
48 ÷ 2 = 24
It costs $24 to buy one case of 12 packages.
Now we have to figure out how many cases we will need to buy for the total amount of 180 packages.
I will divide 12 from 180.
180/12 = 15.
You will need to buy 15 cases to get 180 packages.
Now to find the cost, we have to multiply.
x = 15 (amount of cases)
y = $24 (price of case)
z = How much it costs.
[tex]x * y=z[/tex]
Substitute:
[tex]15*24=z[/tex]
Multiply:
[tex]15 * 24= 360[/tex]
[tex]z=360[/tex]
If the price does not change, the total cost of next month's order will be $360.
What is x=__° pleaseee help
Answers
Answer:
100 degrees
sorry if i wrong
Step-by-step explanation:
(Translate each sentence into a formula)
the area A of a circle is pi times the radius r squared
Answers
Answer:
A=πr2
THIS IS THE ANSWER
PLEASE MARK BRAINLIEST!!!!!
Sharon types for other people. She charges $1.25 per page for double-spaced pages and $1.75 per page for space-and-a-half pages. How much total pay would she receive for a 25 page double spaced report and a 15 page space-and-a-half report?
Answers
Answer: Double Spaced Pages = $31.25 Space And A Half Pages = $26.25
Step-by-step explanation:
Multiplication
Double-Spaced Pages
1.25 x 25 = 31.25
Space And A Half Pages
1.75 x 15 = 26.25
Megan Jordan and Katie babysat and earned a total of $65.55 if they split the earnings evenly how much would each person earn
Answers
$32.77
Step-by-step explanation:
divide 65.55 by 2
A stadium has 45,000 seats. Seats sell for $28 in Section A, $24 in Section B, and $20 in Section C. The number of seats in Section A equals the total number of seats in Sections B and C. Suppose the stadium takes in $1,139,600 from each sold-out event. How many seats does each section hold?
Answers
Answer:
section A = 22,500 seatssection B = 14,900 seatssection C = 7,600 seatsStep-by-step explanation:
given:
stadium has 45,000 seats.
section A = $28 per ticket
section B = $24 per ticket
section C = $20 per ticket
$1,139,600 from each sold out event
Seats on A = Seats B + Seats C
find:
How many seats does each section hold?
solution:
45,000 = A + B + C eq. 11,139,600 = 28A + 24B + 20C eq. 2since A = B + C, substitute A into eq. 1
45,000 = A + B + C45,000 = (B + C) + B + C45,000 = 2B + 2C45,000 - 2C = 2BB = 45,000 - 2C2
B = 22,500 - C eq. 3since A = 22,500
B = 22,500 - C
substitute A and B into eq. 2 to get C
1,139,600 = 28A + 24B + 20C1,139,600 = 28(22,500) + 24(22,500 - C) + 20C1,139,600 = 630,000 + 540,000 - 24C + 20C1,139,600 - 630,000 - 540,000 = -24C + 20C-30,400 = -2CC = 30,4004
C = 7,600now plugin the value of C=15,200 into eq. 3
B = 22,500 - CB = 22,500 - 7,600B = 14,900therefore, the number of seats on each sections are:
seats A = 22,500
seats B = 14,900
seats C = 7,600
Proof:
45,000 = A + B + C45,000 = 22,500 + 14,900 + 7,60045,000 = 45,000 √
1,139,600 = 28A + 24B + 20C1,139,600 = 28(22,500) + 24(14,900) + 20(7,600)1,139,600 = 630,000 + 357,600 + 152,0001,139,600 = 1,139,600 √What is the decimal equivalent of 4/5?
A. 0.16
B. 0.20
C. 0.25
D. 0.80
Answers
D 0.80
Explanation:
4/5 in decimal would be 0.80
Please Help!!! Brainliest will be given!
1. Can x^3+8 be factored? Explain
A. Yes, because x^3 and 8 both share a common factor.
B. No, because x^3 and 8 do not have any common factors.
C. Yes, becahse a sum of cubes can be factored. D. No, becahse a sum of cubes cannot be factored.
2. Determine whether each identity is true or false.
A. a^2-2ab+b^2=(a+b)(a-b)
B. a^2-b^2=(a+b)(a+b)
C. a^2+2ab+b^2=(a+b)(a+b)
D. a^3-b^3=(a-b)(a^2+ab+b)
Answers
Answer:
1. C. Yes, because a sum of cubes can be factored
2a. false
2b. false
2c. true
2d. false (based on what is written in the equation; refer to step-by-step)
Step-by-step explanation:
1. Both 3 and 8 can be cubed, which is why x^3+8 can be factored (x+2)(x^2-2x+4)
2a. a^2-b^2 can be factored by the perfect square rule, so it should be (a-b)^2
2b. both terms are perfect squares, so you can factor, making it (a+b)(a-b)
2c. You can factor using the perfect square rule, making it (a+b)^2
2d. Most of what is in the equation is true, yet the correct solution would be (a-b)(a^2+ab+b^2)
99+33=132 solve as a(b+c)
Answers
Answer:
3267ab+13068ac
21,437 to the nearest ten thousand
Answers
Answer:
the question is not well defined
Answer:
20,000
Step-by-step explanation:
the 1 will make the 21437 round down because it is less than 5
Bob did chores for his neighbor. The first day he earned $8. Then he earned $10 a day for
two weeks. If he took one day off each week, how much did he earn?
Answers
Answer: $128
Step-by-step explanation: So first Bob earned 8 dollars. Then he started earning 10 dollars a day every week for 2 weeks. that would have been 148 dollars (plus the 8 dollars he earned in the beginning), but he took a break once a week, subtracting 20 dollars from his pay, giving him 128 dollars in total.
Let me know if this was helpful! :D
Thomas has 1 1/4 cans of paint. He has 3 walls to paint. How much paint can he use on each wall?
Answers
Answer:
5/12
Step-by-step explanation:
I need to know whether its
A) 54
B)88
C)68
D)34
Answers
The sum of two numbers is 34 and the difference is 8
What are the numbers ?
Answers
Answer:
The two numbers would be 21 and 13
Step-by-step explanation:
Check:
21+13=34
21-13=8
So the two numbers are correct.
A Z score is -3 and the sample's Mean is =30 and the Standard Deviation is =6. The raw score is __________.
Answers
Answer:
-9 I Think this is the answer????????
Step-by-step explanation:
100 POINTS + BRANLIEST
Answers
Answer: 45 degrees I think.
Step-by-step explanation: Based off of looks alone, one could conclude that 3x is approximately 0.5 degrees larger than 2x, 2x is approximately 90 degrees, and that x is approximately half of 2x. so based purely off of observation, it appears that x is approximately 45 degrees. you can multiply x by the number by in it in each instance.
x=45, 2x=90, and 3x=135
Please check if you have a protractor.
Answer:
The value of x is 45°
Step-by-step explanation:
We could conclude that 3x is approximately 0.5 degrees larger than 2x, 2x is approximately 90 degrees, and that x is approximately half of 2x.
x = 45°
2x = 2(45) = 90°
3x = 3(45) = 135°
Method of Least Squares, Goodness of Fit Deepa Dalal opened a free-standing radiology clinic. She had anticipated that the costs for the radiological tests would be primarily fixed, but she found that costs increased with the number of tests performed. Costs for this service over the past nine months are as follows:______.
Month Radiology Tests Total Cost
January 2,800 $133,500
February 2,600 135,060
March 3,100 175,000
April 3,500 170,600
May 3,400 176,900
June 3,700 186,600
July 3,840 174,450
August 4,100 195,510
September 3,450 185,300
Required:
1. Compute the cost formula for radiology services using the method of least squares. If required, round your answers to two decimal places.
Y = $ ________ + $ _________X
2. Using the formula computed in Requirement 1, what is the predicted cost of radiology services for October for 3,500 appointments? (Round the answer to the nearest dollar.)
$ _____________________
Answers
Answer:
Step-by-step explanation:
From the given information:
The cost formula for radiological services can be computed as:
Month Radiology Test Total Cost
X Y XY
Jan 2800 133500 3738×10⁵
Feb 2600 135060 351156×10³
Mar 3100 175000 5425×10⁵
April 3500 170600 5971×10⁵
May 3400 176900 60146×10⁴
June 3700 186600 69042×10⁴
July 3840 174450 669888×10³
Aug 4100 195510 801591×10³
Sept 3450 185300 639285×10³
52672×10⁵
Similarly, X²; =
Jan 784×10⁴
Feb 676×10⁴
Mar 961×10⁴
April 1225×10⁴
May 1156×10⁴
June 1369×10⁴
July 14745600
Aug 16810000
Sept 11902500
105168100
Now, suppose the equation is being represented by y = a+bx
where;
[tex]a = \dfrac{\sum Y * \sum X^2 -\sum X^2 \sum Y}{n * \sum X^2 - (\sum X)^2}[/tex]
[tex]a = \dfrac{1532920 *105168100-30490(52672\times 10^5)}{9 *105168100 - (30490)^2}[/tex]
a = 36588.821
Also,
[tex]b = \dfrac{n \sum XY - \sum X \sum Y}{n \sum X^2 -(\sum X)^2}[/tex]
[tex]b = \dfrac{9* 52672*10^5 -30990*1532920}{9*105168100-(30490)^2}[/tex]
b = 39.476
Thus;
Y = $36588.82 + $39.48X
The predicted cost of radiology for 3500 appointments will be :
Y = $36588.82 + $39.48X
Y = $36588.82 + $39.48(3500)
Y = 174768.82
Y ≅ $174769
Peanut allergies are becoming increasingly common in Western countries. Some evidence points to the timing of peanuts! first introduction in the diet as an influential factor, raising the question of whether pediatricians should recommend early exposure or avoidance. A study enrolled infants with a diagnosed peanut allergy and randomly assigned them to either completely avoid peanuts or consume peanuts in small amounts regularly until they reached 60 months of age. At the end of the study, 18 of the 51 infants who had avoided peanuts were still allergic to peanuts. In contrast, 5 of the 47 infants who had consumed peanuts were still allergic to peanuts. Do the data indicate that one approach is more beneficial? Follow the four‑step process.
STATE: What is the question we are asking?
A. Does early exposure to peanuts better reduce peanut allergy in children with a known allergy to peanuts?
B. Does early exposure to peanuts in small amounts or complete avoidance of peanuts better reduce peanut allergy in children with a known allergy to peanuts?
C. Should all children under the age of 60 months avoid peanuts or only eat them in small amounts?
D. Should all children under 60 months eat peanuts regularly in small amounts?
Answers
Answer:
B. Does early exposure to peanuts in small amounts or complete avoidance of peanuts better reduce peanut allergy in children with a known allergy to peanuts?
Step-by-step explanation:
Remember we are told there's already a question whether pediatricians should recommend early exposure or avoidance. Thus, the research question should answer these two issues (early exposure or avoidance).
Hence, the question we are asking is: Does early exposure to peanuts in small amounts or complete avoidance of peanuts better reduce peanut allergy in children with a known allergy to peanuts?
how many natural numbers lie between 75² and 76²
Answers
Answer:
Natural numbers between [tex]75^{2}[/tex] and [tex]76^{2}[/tex] is
(76 * 76) - (75 * 75)
=> 5776 - 5625
=> 151
Therefore, there are 151 natural numbers between [tex]75^{2}[/tex] and [tex]76^{2}[/tex]
If my answer helped, kindly mark me as the brainliest!!
Thank You!!
What is the circumference of this circle
Answers
Answer: C≈75.4
You can use C = πd as the formula.
What value of r makes the following equation true?
8=−3r+7r
Answers
Answer:
r = 2
Step-by-step explanation:
Step 1:
8 = - 3r + 7r Equation
Step 2:
8 = 4r Combine Like Terms
Step 3:
r = 8 ÷ 4 Divide
Answer:
r = 2
Hope This Helps :)
Two anhles of trisngle measure 12 and 40. What is the measure of the third angle of the triangle?
Answers
Answer:
180-(12+40)
180-52=128
Step-by-step explanation:
The cost of producing magnets with the company logo printed on them consists of a onetime setup fee of $230.00 plus $0.85 for each magnet produced. This cost can be calculated using the formula C=230.00+0.85p, where p represents the number of magnets produced and C is the cost. Use the formula to calculate the cost of producing 1600 magnets.
Answers
C=1590
1590 is the answer
I need help with this also can you please put the work for each one
Answers
Party City: $21. Each costume is originally $14. It says the second is half off. 14 divided by 2 is 7.
14+7=21
hope this helps
PLEASE HELP! Square root related
5 (square root of 144 minus 2 times square root of 64)
Answers
Answer:
[tex]\huge\boxed{5(\sqrt{144}-\sqrt{64})=20}[/tex]
Step-by-step explanation:
[tex]\sqrt{a}=b\iff b^2a\ \text{for}\ a\geq0\ \text{and}\ b\geq0[/tex]
[tex]5(\sqrt{144}-2\sqrt{64})=(*)\\\\\sqrt{144}=12\ \text{because}\ 12^2=12\cdot12=144\\\sqrt{64}=8\ \text{because}\ 8^2=8\cdot8=64\\\\(*)=5(12-8)=5(4)=20[/tex]
