Answer:
24
Step-by-step explanation:
1.7x - 1.2x = 5 + 7
0.5x = 12
x = 24
25% of £18 i need help fast pls
Answer:
like they said
Step-by-step explanation:
the answer is 4.5
Please help
Math experts urgent thank you very much
Answer:
The left table's answers are 5, 30, and 60.
The right table's answers are 20, 36, and 22.5
And the bottom table's answers are 32, 12, and 40
Hope that helps!
It appears that people who are mildly obese are less active than leaner people. One study looked at the average number of minutes per day that people spend standing or walking. Among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately Normally distributed with 376 minutes and standard deviation 70 minutes. The mean number of minutes of daily activity for lean people is approximately Normally distributed with 526 minutes and standard deviation 106 minutes. A researcher records the minutes of activity for an SRS of 6 mildly obese people and an SRS of 6 lean people.
Required:
a. What is the probability that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 410 minutes?
b. What is the probability that the mean number of minutes of daily activity of the 6 lean people exceeds 410 minutes?
Answer:
0.9963 is the probabilities that mean number of daily activity of 6 lean people exceed 410 minutes.
Step-by-step explanation:
Solution:
6 Mildly obese people exceed 410 minutes.
Given:
Mean = µ = 376
Standard deviation = ∂ = 70
n = 6
p (x> 410) = p (z > x - µ/ ∂ / √n)
= p (z > 410 – 376 / 70 /√6 )
= p (z > 1.185)
= 1 – p (z < 1.185)
= 1 – 0.38199
= 0.618
0.618 is the probability that the mean number of minutes of daily activity of 6 mildly obese people exceed 410 minutes.
6 lean people exceed 410 minutes:
Given:
Mean = µ = 526
Standard deviation = ∂ = 106
n = 6
=p(x > 410)
= p (z > x - µ/ ∂ /√n)
=p (z > (410 – 526 ) / 106 / √ 6 )
= p (z > - 2.67)
= p (z <2.68)
= 0.9963
0.9963 is the probabilities that mean number of daily activity of 6 lean people exceed 410 minutes.
Calculator
cm
n
8 cm
This figure represents a small paperweight. The plan is to cover
20% of the total surface area, including the bottom face, of the
paperweight with stickers.
15 cm
How much surface area will be covered with stickers?
10 cm
223.8 cm
11 cm
17 cm
895.2 cm?
1119 cm
5595 cm
1
2
3
4
5
Answer:
223.8
Step-by-step explanation:
I failed the test to get the answer
Answer:
the answer is 223.8
Step-by-step explanation:
given the following formula solve for r. C=2πr
Answer:
[tex]\frac{c}{2\pi } =r[/tex]
Step-by-step explanation:
c = 2πr
→ Divide both sides by 2π
[tex]\frac{c}{2\pi } =r[/tex]
If you can make 1 whole pencil out of 4 pencil pieces and you are given 16 pieces. How man whole pencils can you make? (answer is not 4)
Answer:
is there multiple choice options, I want to help but I'm not sure why it isn't 4
Order from least to greatest = 9.7 x 103 = 8.2 x 10-7 = 1.2 x 103 = 3.4 x 106 = 5.8 x 10
Step-by-step explanation:
there's no such that in mathematics
The table below shows the presicted number of words janae cam type ,y, in x minutes
Answer:
answer is b
Step-by-step explanation:
The phone jose wants it on sale for 20% off. The original cost of the phone is $775. How much will he need to pay after the discount with an 8% tax? I need to show my work. Please help
Answer:
$669.60
Step-by-step explanation:
item with an original price tag of $775.00 that is marked down by 20% will have a sales price of $620.00 plus 8% tax
Rewrite each equation without absolute value for the given conditions. y = |x-5| + |x+5| if -5 < x < 5
Answer:
y=10
Step-by-step explanation:
Both equations in a linear-quadratic system of equations can have two variables that are squared.
True or False
The cone below has a base diameter of 20x cm. When the base of
The cone rests on horizontal ground it exerts a pressure of 650 N/m^2
a) Calculate the weight of the cone in terms of x and pie
Since the cone has a base diameter of 20x cm, the weight of the cone in terms of x and pie is 6.50πx² N
Pressure on the groundThe pressure on the horizontal ground due to the cone is given by P = W/A where
W = weight of cone and A = area of base of coneWeight of the coneMaking W subject of the formula, we have
W = PA
Since
P = pressure = 650 N/m² and A = area of base of cone = πd²/4 where d = diameter of base of cone = 20x cm = 0.2x mSo, W = PA
W = Pπd²/4
W = Pπ(0.2x)²/4
W = 0.04Pπx²/4
W = 0.01Pπx²
Substituting the values of the variables into the equation, we have
W = 0.01Pπx²
W = 0.01 × 650 N/m² × π(x m)²
W = 6.50πx² N
So, since the cone has a base diameter of 20x cm, the weight of the cone in terms of x and pie is 6.50πx² N
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EASY ANSWER FOR BRAINLEST QUICK!
Which inverse operation is needed to isolate the variable in the equation 4.75x = 24.7?
Group of answer choices
Multiply both sides by 4.75.
Divide both sides by 4.75.
Subtract 4.75 from both sides.
Add 4.75 to both sides.4.75x = 24.7?
Answer:
Divide both sides by 4.75
Step-by-step explanation:
The goal is to get x by itself and 4.75 is attached by multiplication so doing the inverse will leave x alone.
Hope this helps! Have a great day!
Brainliest if correct
Answer:
1
2
–
2
5
=
1 × 5
2 × 5
–
2 × 2
5 × 2
=
5
10
–
4
10
=
5 – 4
10
=
1
10
Step-by-step explanation:
How many solutions does it have?
3x+4 = 3x+4
Answer:
it has no solution.......
answer will be 3x+4 = 3x+4 i.e, 0=0 ,so
but if 3x+4 = 0 , x= -4/3 . Its a linear equation and has only one solution
Answer:
Infinitely many solutions.
Step-by-step explanation:
3x + 4 = 3x + 4
3x = 3x
Divide 3 from both sides.
x = x
Therefore, this equation has infinitely many solutions.
----------------------------------------------------------------------------------------------------------
Example ~
x = 1
(3 × 1) + 4 = (3 × 1) + 4
3 + 4 = 3 + 4
7 = 7
A store paid $240.00 for a dining table.The manager of the store marks up the table by 125%.what is the new price of the dining table?
Answer:
$300
Step-by-step explanation:
$240 × 125% is $300
We can use the method of calculating the percentage of an amount to find out the discount amount. The new price of the dining table will be $300.
How to calculate unit price of something?Unit means 'single entity', the fundamental constructing block. Usually, it is 1 in mathematics and science.
Thus, unit price of something is price of 1 thing.
Therefore, suppose we're taking about price of mangoes, then unit price will denote the price of 1 mango.
We have been given that A store paid $240.00 for a dining table and The manager of the store marks up the table by 125%.
Therefore, 125% of $240
$240 × 125%
$240 × 1.25
= $300
Hence, the new price of the dining table will be $300.
We can use the method of calculating the percentage of an amount to find out the discount amount.
Learn more about unit price here:
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Pls helpppp asap i really need help
please help me with this
Answer:
B
Step-by-step explanation:
Consider this:
Cheese Dip --> Burrito --> Chicken
Cheese Dip --> Burrito --> Beef
Assume Cheese Dip is your starting point and Chicken / Beef are your ending points. We already have two combos here.
Now looking at the diagram, we should see eight ending points in total.
Therefore, there would be eight combinations for Lelia to choose.
X/h +1=-2 what is the value of x in terms of h
Answer:
i’m pretty sure it’s X = -3h
Step-by-step explanation:
X/h + 1 = - 2
By taking L.C.M
(X + h)/ h = -2
X + h = -2h
X = -2h - h
X = -3h
The daily wages of a carpenter are increased from $40 to $48. Find the
percent increase?
Answer:20
Step-by-step explanation: so first take out the amount of salary increased so it will be- 48-40=-8
After take out the percentage of the increased amount which was $-8 and the original amount which was $40 so 8/40 × 100
Percentage increase would be 16.67% or if thats not right try 20%
i hope this helps!!!!
Which equation has no solution? A 2(x+1)=1 B 2(x+1)=2x+2 C 2(x+1)=2x+1 D 2(x+1)=2
Answer:
C) 2(x+1)=2x+1 ( No Solution )
Step-by-step explanation:
1)
[tex]2(x+1)=1\\\cfrac{2\left(x+1\right)}{2}=\frac{1}{2}\\x+1=\cfrac{1}{2}\\ x+1-1=\frac{1}{2}-1\\\boxed{x=-\frac{1}{2}}[/tex]
2)
[tex]2(x+1)=2x+2\\2x+2=2x+2\\2x+2-2=2x+2-2\\2x=2x\\2x-2x=2x-2x\\0=0[/tex]
3)
[tex]2(x+1)=2x+1 \\2x+2=2x+1\\2x+2-2=2x+1-2\\2x=2x-1\\2x-2x=2x-1-2x\\0=-1\\\boxed{No\:Solution}[/tex]
4)
[tex]2(x+1)=2\\\cfrac{2\left(x+1\right)}{2}=\cfrac{2}{2}\\x+1=1\\x+1-1=1-1\\x=0[/tex]
~
Eighty seven students were passing around a petition to stop the historical building from being demoilshed. each student collected 92 signatures. what was the total number of signatures the students collected
Answer:
8004
Step-by-step explanation:
87 x 92 = 8004
Answer:
87 × 92 = 8,004
Step-by-step explanation:
all 87 students got 92 signatures
A $1250 TV is on sale for $200 off the regular price. The tax is 5.5%. What is the total
cost of the TV with tax?
Answer: Multiply 950 by 5.5
1250 - 200 = 950
950 x 5.5 = answer.
I am not sure though.
Answer:
1107.75
Step-by-step explanation:
1250-200=1050
10%x1050=105
5%=52.5
1%=10.5
0.5%=5.25
1050+52.5+5.25=1107.75
Hellllllllllllllllllllllp
Answer:
C
Step-by-step explanation:
Reflect over y axis the rotate 180 degrees.
students from three grade levels were surveyed
Answer:
what do u mean surveyed?
Answer:
The choices CDE
Step-by-step explanation:
CDE
Pls help me
Question 2 Part C (5 points): Mrs. Hinson is replacing her rectangular driveway with pavers. The area of her driveway is 64m² - 9n² square units. Mrs. Hinson needs to find the dimensions of her driveway so she knows how many pavers to buy.
Help Mrs. Hinson by factoring the area completely. To receive full credit, you must show all work.
WORK:
ANSWER: The dimensions are...
Let's factor out
[tex]\\ \rm\Rrightarrow 64m^2-9n^2[/tex]
[tex]\\ \rm\Rrightarrow (8m)^2-(3n)^2[/tex]
[tex]\\ \rm\Rrightarrow (8m-3n)(8m+3n)[/tex]
Done
The dimensions of Mrs. Hinson's driveway are (8m -3n)unit × (8m + 3n) units.
Factors:It is a number or algebraic expression which divides completely another number or expression, without leaving any remainder.How to solve the given problem?The shape of the driveway is rectangular, which is given byThus, the dimensions of the area are (8m -3n)unit × (8m + 3n) units.
Learn more about Factors here:
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how many solutions does y=-6x-9 have
Answer:
an infinite number
Step-by-step explanation:
This equation has a graph that is a line. Every point on the line is a solution.
There are an infinite number of solutions.
Which relationships describe angles 1 and 2?
Select each correct answer.
O complementary angles
D vertical angles
O adjacent angles
O supplementary angles
Answer:
Complementary angles
Adjacent angles
Step-by-step explanation:
Complementary Angles: Two angles whose measures sum to 90°
Vertical Angles: a pair of non-adjacent angles formed by the intersection of two straight lines. Vertical angles are congruent
Adjacent Angles: Two angles that share a common side and a common vertex, but don't overlap.
Supplementary Angles: Two angles whose measures sum to 180°
Therefore, angles 1 and 2 are:
Complementary anglesAdjacent anglesA health research institute collects information from 20 individuals on the number of years they have spent smoking cigarettes, and their age of death. The data is summarized below:
∑x=1257
∑y^2=836
∑x^2=98823
∑y=116
∑(xy)=8249
Find the correlation coefficient (r):
The correlation coefficient of the health research institute data measures the relationship between the age and the years of the smokers
The correlation coefficient is 0.53
How to calculate the correlation coefficientThe correlation coefficient (r) is calculated as:
[tex]r = \frac{n(\sum xy) - \sum x \sum y}{\sqrt{[n \sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2}}[/tex]
Using the given parameters, we have:
[tex]r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1257^2][20 * 836 - 116^2}}[/tex]
Evaluate the exponents
[tex]r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1580049][20 * 836 - 13456}}[/tex]
Evaluate the products
[tex]r = \frac{164980 - 145812}{\sqrt{[1976460 - 1580049][16720 - 13456}}[/tex]
Evaluate the differences
[tex]r = \frac{19168}{\sqrt{[396411*3264}}[/tex]
Evaluate the product
[tex]r = \frac{19168}{\sqrt{1293885504}}[/tex]
Evaluate the root
[tex]r = \frac{19168}{35970.6}[/tex]
Evaluate the quotient
[tex]r = 0.53[/tex]
Hence, the correlation coefficient is 0.53
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There are 5,000 fish in the pond and the population is increasing by 3.1% each year. Write an equation to determine the fish population after x years
If there are 5,000 fish in the pond and the population is increasing by 3.1% each year.
After one year the population would be 15500?
so [tex]5000=x*3.1[/tex]