Answer:
37 years
Step-by-step explanation:
If the mean age of 5 people in that room was 25 years,
∴ Sum₍₅₎= (25×5)years
= 125 years
When a person enters that room, the mean age was now 27.
∴ Sum₍₆₎=(27×6) years
= 162 years
∴ The age of the person who entered the room = Sum₍₆₎ - Sum₍₅₎
= (162-125) years
= 37 years
∴ The age of the person who entered the room is 37 years.
Hope this helps!!!
Please mark as brainliest!!!
Answer:
im just answering so you can give the other person brainilest. you can report if ya want.
Step-by-step explanation:
:)
What point is symmetric to (2,7) on this quadratic graph?
OPTIONS
• (-5,0)
• (-2,4)
• (2,-1)
• (-6,7)
Answer: (-6,7)
Step-by-step explanation:
Tow points, (x1, y1) and (x2, y2) are simetric in a quadratic graph when:
f(x1) = y1 = f(x2) = y2
so y1 = y2
Then if we have the point (2,7) we want to find other point that has the same value for y, this is (-6, 7)
So the correct option is (-6,7)
consider the word grateful. if all of the letters are used, how many ways can the letters be arranged?
a. 36
b. 720
c. 5,040
d. 40,320
Answer:
Correct option: d -> 40,320
Step-by-step explanation:
To find all the arrangements of letters in a word where all the letters are different, we just need to calculate the factorial of the number of letters.
The word "grateful" has 8 different letters, so the number of arrangements of letters is:
8! = 8*7*6*5*4*3*2 = 40,320 different arrangements
Correct option: d
Fill in the Blank 6:15=8:_
Answer:
20
Step-by-step explanation:
given g (x) = -x -2, find g (-5)
Answer:
g(-5)=3
Step-by-step explanation:
g(-5)=-(-5)-2=5-2=3
Substitute x with -5.
g(-5) = -(-5) - 2
g(-5) = 5 - 2
g(-5) = 3
Best of Luck!
Factor as the product of two binomials.
81 +18x +x^2
Answer:
(x + 9)²
Step-by-step explanation:
x² + 18x + 81
(x + 9)(x + 9)
(x + 9)²
The spinner below is spun 20 times. It lands on red 6 times, yellow 2 times, green 8 times, and blue 4 times.
What is the theoretical probability of landing on red? Select all that apply
Group of answer choices
0.42
1/2
5/12
50%
42%
Answer:
I think the answer is 42%
how would you go about doing this
Answer:
3.4x7.6 then divide by 2
Answer:
Step-by-step explanation:
the formula of a triangle is
b * h
2
so 7.6 * 3.4
=25.84/ 2
=12.92 cm²
Math money help! Seventh grade. Please help, thank y’all! <3
Answer:
ABC store
Step-by-step explanation:
The abc store shoes are 18.02
Answer:
Lo-Price Shoes
Step-by-step explanation:
(60.05×30)÷100=
1801.5÷100=
$18.015
60.05-18.015=42.035
$42.035>$38.85
Lo-Price Shoes are still cheaper even with ABC's 30% discount.
What is the mean?
97 3 0 4 7
Answer: 22.2
Step-by-step explanation: You have to add 97, 3, 0, 4, 7 and then then divide the total by how many numbers you added. So for this you would divide the total by 5
Convert the rectangular equation x ^ 2 + y ^2 = 2 y to polar form
Answer:
Step-by-step explanation:
The main equivalence between rectangular and polar forms is
x^2 + y^2 = r^2, where r is the radius. Next, y = r sin Ф. Thus,
x^2 + y^2 = r^2 becomes r² = 2·r·sin Ф.
The variable r can be factored out partially: r = 2·sin Ф
This is the polar form of x^2 + y^2 = 2y.
Which number line shows the solution set to this inequality? -2x + 9 < x − 9
Answer:
see below
Step-by-step explanation:
-2x + 9 < x − 9
Add 2x to each side
2x-2x + 9 < 2x+x − 9
9 < 3x-9
Add 9 to each side
9+9 < 3x
18 < 3x
Divide each side by 3
18/3 < 3x/3
6 < x
Open circle at 6 line going to the right
Answer:6 to the right of the number line
Step-by-step explanation:I just did this quiz
joy and Peter were each walking along a straight road. joy walked 1800 meters in 1/3 hour. Peter walked 1/2 of joys distance in 1/5 hour.
the 1/3, 1/2, and 1/5 are fractions
Answer:
what is it asking to find then i can help
Step-by-step explanation:
Answer:
B: It travels for 2 hours, then stops for 1 hour, and finally travels again for 2 hours.
A sundae requires 2 ice-cream scoops and 4 raspberries, and a milkshake requires 3 ice-cream scoops and 5 raspberries. Laila wants to sell sundaes and milkshakes with at most 80 ice-cream scoops and 150 blueberries. Let S denote the number of sundaes she makes and M the number of milkshakes she makes. Write an inequality that represents the condition based on the number of (ICE-CREAM SCOOPS).
This question is incomplete because it was a details in the question was not written correctly.
Complete Question:
A sundae requires 2 ice-cream scoops and 4 raspberries, and a milkshake requires 3 ice-cream scoops and 5 raspberries. Laila wants to sell sundaes and milkshakes with at most 80 ice-cream scoops and 150 raspberries. Let S denote the number of sundaes she makes and M the number of milkshakes she makes. Write an inequality that represents the condition based on the number of (ICE-CREAM SCOOPS).
Answer:
An inequality that represents the condition based on the number of (ICE-CREAM SCOOPS) is given as:
2S + 3M ≤ 80
Step-by-step explanation:
From the above question, we are told that:
Let S denote the number of sundaes Laila makes
M the number of milkshakes
a) A sundae requires 2 ice-cream scoops and 4 raspberries
A sundae = 2S and 4S
b) A milkshake requires 3 ice-cream scoops and 5 raspberries.
A milk shake = 3M and 5M
Laila wants to sell sundaes and milkshakes with at most 80 ice-cream scoops and 150 raspberries .
Therefore, an inequality that represents the condition based on the number of (ICE-CREAM SCOOPS) is given as:
2 ice cream scoops + 3 ice cream scoops ≤ 80
2S + 3M ≤ 80
The number of purses a vendor sells daily has the probability distribution represented in the table. Number of Purses, x 0 1 2 3 4 5 P(x) 0.35 0.15 0.2 0.2 0.03 0.07 If each purse sells for $50.00, what is the expected daily total dollar amount taken in by the vendor from the sale of purses? $1.62 $35.00 $79.30 $81.00 $162.00
Answer:
(D)$81
Step-by-step explanation:
Given that the number of purses a vendor sells daily has the probability distribution represented in the table.
Expected Value, [tex]E(x)=\sum_{i=1}^{n}x\cdot p(x)[/tex]
Therefore:
[tex]E(x)=(0X0.35)+(1X0.15)+(2X0.2)+(3X0.2)+(4X0.03)+(5X0.07)\\=0+0.15+0.4+0.6+0.12+0.35\\E(x)=1.62[/tex]
If each purse sells for $50.00, the number of expected daily total dollar amount taken in by the vendor from the sale of purses
=Expected Value X $50
=1.62 X $50
=$81
The correct option is D.
$ The polynomial 3x3 + 10x2 - x - 12 has a factor of x + 3. Find the remaining factors,
Answer:
(3 x + 4) (x - 1) (x + 3)
Step-by-step explanation:
Factor the following:
3 x^3 + 10 x^2 - x - 12
The possible rational roots of 3 x^3 + 10 x^2 - x - 12 are x = ± 1/3, x = ± 2/3, x = ± 4/3, x = ± 1, x = ± 2, x = ± 3, x = ± 4, x = ± 6, x = ± 12. Of these, x = -4/3, x = 1 and x = -3 are roots. This gives 3 x + 4, x - 1 and x + 3 as all factors:
Answer: (3 x + 4) (x - 1) (x + 3)
What are the roots of y = x2 – 3x – 10?
Answer: y =x2 (squared)−3x−10
Step-by-step explanation:
Answer:
What are the roots of y [tex]y=x^{2}-3x-10[/tex]?
[tex]x=5[/tex] [tex]and[/tex] [tex]=-2[/tex] .
Step-by-step explanation:
The given equation in two variables is [tex]y=x^{2}-3x 10 y = x 2 - 3 x - 10[/tex] .
We are asked to find the roots. We will now apply the zero factor property
by equating each factor to zero. Thus, the roots of the equation are
[tex]x=5[/tex] and [tex]x=-2[/tex] .
What proportion of... help me please
Answer:
Below in bold.
Step-by-step explanation:
I won't do all these but you should get the idea of how to do them from the following. Be careful with the units if they are given . You must convert both values to the same unit before working out the percentages.
a. What proportion of 15 is 5:
As a fraction it is 5/15 = 1/3.
Now convert to a percentage by multiplying by 100:
1/3 * 100 = 33.33%
b. 20 and 10
= 10/20 = 1/2
1/2 * 100 = 50%.
e. £30 and £12
= 12/30
= 2/5
= 2/5 * 100 = 40%.
h. 6.4 is 0.4
= 0.4 / 6.4
= 4/64
= 1/16
= 1/16 * 100 = 6.25%
i. £144 is 12p
Here we convert the 2 values to pence:
£144 = 144 * 100 = 14,400p
The fraction is 12/14,400
= 1/1200
= 1/1200 * 100 = 0.083%
j. 1.2 m is 30 cm
Convert 1.2 m to cm
= 1.2 * 100 = 120
The fraction is 30/120 = 1/4
= 1/4 100 = 25%.
what is m/2=12? plz helps
Answer:
Its 6
Step-by-step explanation:
6 times 2 equals 12
so m=6
Answer:
m=24
Step-by-step explanation:
12x2=24
24/2=12
MATH HOMEWORK HELP PLEASE I ONLY NEED 22 and 23 DONE
C. 0.42 I did this right before the pandemic
Below are two parallel lines with a third line intersecting them.
Answer:
x = 88
Step-by-step explanation:
These angles are same side exterior angles, and when the lines are parallel, same side exterior angles are supplementary
x + 92 =180
Subtract 92 from each side
x+92-92=180-92
x =88
Answer:
[tex]88 \: \: degrees[/tex]
Step-by-step explanation:
[tex]x + 92 = 180 \\ x = 180 - 92 \\ x = 88 \: \: degrees[/tex]
7x^2-2x+1-(9x^2+2x-1)
Answer:
[tex]-2x^2-4x+2[/tex]
Step-by-step explanation:
[tex](7x^2-2x+1)-(9x^2+2x-1)=\\(7x^2-9x^2)+(-2x-2x)+(1+1)=\\-2x^2-4x+2[/tex]
Hope this helps!
answer the question for 10 points
Answer:
D. Division and Addition
Step-by-step explanation:
Suppose that a person's peak blood alcohol level is 0.07 (grams per 100 mL) and that this level decreases by 40% each hour. a) What is the hourly decay factor? b) Write an exponential function B(x)equalsCa Superscript x that models the blood alcohol level after x hours. c) Evaluate B(2) and interpret the result.
Answer:
Step-by-step explanation:
Considering a person peak blood is 0.07
It decrease by 4% every hour
a) Using exponential function
[tex]f(x) = Ca^x[/tex]
where,
a = 1 + r
r = -0.40%
Here,
C = 0.07,
a = 1 - 0.04 = 0.06
[tex]f(x)=0.07(0.6)^x[/tex]
Therefore, hourly decay factor is 0.6b)
Here the hourly decay factor is 0.6
[tex]B(x)=ca^x\\\\0.07(0.6)^x[/tex]
c) Evaluate
[tex]B(2)=0.07\times (0.6)^2\\\\0.07(0.36)\\\\= 0.0252g[/tex]
0.0252g or 100mL
Thus, after 2 hours the blood is 0.0252g or 100mLAnswer:
a) Hourly decay factor = 0.6
b) [tex]B(x) = 0.07(0.6)^x[/tex]
c) B(2) = 0.0252
This result means that the blood alcohol level will be 0.0252 (grams per 100 ml) after 2 hours
Step-by-step explanation:
Since the function is an exponential function, it can be modeled as:
[tex]B(x) = C (1 + r)^x[/tex]
Where the peak blood alcohol level, C = 0.07
Since the blood level decreases by 40%(0.4) every hour, r = -0.4
The hourly decay factor is given by a = 1 + r
a = 1 + (-0.4) = 1 - 0.4
a = 0.6
Therefore, the hourly decay factor = 0.6
b) The exponential function is:
[tex]B(x) = Ca^x[/tex]
Where a = 1 + r = 0.6
C = 0.07
[tex]B(x) = 0.07(0.6)^x[/tex]
c) Evaluate B(2)
Substitute x = 2 into the exponential function gotten in part (b)
[tex]B(2) = 0.07(0.6)^2\\B(2) = 0.0252[/tex]
This result means that the blood alcohol level will be 0.0252 (grams per 100 ml) after 2 hours
Fill in the blank
The equation *blank* describes the relationship
( simplify your answer )
Answer:
y=2/3x
Step-by-step explanation:
Factor completely: x^2-y^2-1.5(x-y)
Answer:
(x-y)(x+y-1.5)
Step-by-step explanation:
quanto fa 2 +2??? grazie
Answer:
4
Step-by-step explanation:
2+2=4
A middle school took all of its 6th grade students on a field trip to see a play at a theatre that has 5000 seats. The students filled 4500 of the seats in the theatre. What percentage of the seats in the theatre were filled by the 6th graders on the trip?
Answer:
90%
Step-by-step explanation:
So, in order to get this answer, you must divide the amount of students that filled the theatre, which is 4,500, by the amount of seats at the theatre, which is 5,000. You can eliminate the two zeros at the end of each number, which will leave you with 45/50. 45 divided by 50 equals 0.9. You can then multiply 0.9 by 100, because of the 2 zeros eliminated earlier. This will leave you with 90%.
At a pizza resturant they have a choice of 20 toppings. If a customer choosea two topping pizza find the probability that they ordered a pepperoni and sausage
Answer: The probability is 1/190 = 0.005
Step-by-step explanation:
The probability of ordering two specific toppings out of 20 is:
For the first selection he can order 2 of them, peperoni or sausage, so the probability for the first selection is 2/20 = 1/10 (the number of correct options divided by the total number of options)
For the second selection we have only one option, because we assume that the other one was selected previously, here we also had a total of 19 toppings because one already was selected, the probability in this selection is 1/19.
The joint probability is equal to the product of those two probabilities:
P = (1/19)*(1/10) = 1/190 = 0.005
2. Solve ABC if a = 4, c = 7, and C = 90°. Use trig functions to find the
missing angles.
Answer:
The answer is 43.9822972 rad but you could just round and put 43.98
Step-by-step explanation:
PLEASE ANSWER THIS QUESTION,ILL MARK YOU AS THE BRAINLIEST IF UR ANSWER IS CORRECT.
Answer:
I WILL SAY THE 2 ONE
Step-by-step explanation: