Answer:
45x³
Step-by-step explanation:
Given
3x × 15x²
= 3 × 15 × x × x²
= 45 × x³
= 45x³
Answer:
45x^3
Step-by-step explanation:
Multiply the digits that is 15 x 3
Then multiply the Variable x^2 and x
variables are added when multiplied keep this rule in mind always
Today 108 people visited a water park during the first hour that the park was open. This number of people is 40% of the number of people who visited the water park during the first hour yesterday. How many people visited the water park during the first hour yesterday?
Answer:
40
___ x 108 = 43.2
100
A book had length of 5 inches and a width of 8 inches what is the area of the book
Determine the point estimate. An article in an educational journal discussing a non-conventional high school reading program reports a 95% confidence interval of (520 , 560) for the average score on the reading portion of the SAT. The study was based on a random sample of 20 students and it was assumed that SAT scores would be approximately normally distributed. Determine the sample mean that was used to build this confidence interval.
Answer:
Step-by-step explanation:
CI ( 95 % ) means α = 5 % α = 0,05 α /2 = 0,025
If we have a normal distribution and build a CI by symmetry such CI has as a middle point the mean in this case
CI 95 % = ( 520 ; 560 )
the mean is (520 + 560 ) / 2
mean = 540
Can someone help me please?
Answer:
5 1/6
Step-by-step explanation:
For each part below, use the figure to fill in the blank.
Answer:
a) m<F = 70
b) AB = 6
Step-by-step explanation:
a)
Since this is an isoceles triangle, the base angles are equal so:
2x + 40 = 180
2x = 140
x = 70
b)
Since all of the angles are equal, this is an equilateral triangle. This also makes all of the sides equal and the same.
3. Two computers in an office are connected to the same printer. The two computers and the printer form an isosceles triangle. Each computer is 30ft away from the printer. Don wants to connect the two computers to each other and needs to calculate how much cable will be necessary. He knows that 30 feet of cable already joins each computer to the printer and each computer is 40 degrees from the printer. Find the amount of cable needed to connect the two computers
Alan would like to pitch an idea about a new approach to sales at the next company meeting. He plans to present the following bar graph during his pitch to convince his boss to try out his approach in the lowest performing region in the third quarter. According to the bar graph, which region fits this description?
Answer:
south
Step-by-step explanation:
What is the measure of n?
12
4.
n
m
1 =>
[?]
Enter
no links i’ll give you brainliest please help
i need help on 2 & 3 ASAP
Answer:
2)100
3)100
Step-by-step explanation:
Helen puts 50 marbles into 9 jars. First, she puts in the greatest
possible number of marbles into each of the 1st 8 jars. Each of these
8 jars has an equal number of marbles. The remaining marbles are
then put into the 9th jar. How many more marbles does she need for
the 9th jar such that every jar has the same number of marbles?
Answer:
She needs 4 more marbles for the 9th jar.
Step-by-step explanation:
Multiples of 8:
M = {0, 8, 16, 24, 32, 40, 48, 56, ...}
First, she puts in the greatest possible number of marbles into each of the 1st 8 jars.
The total is the greatest multiple of 8 below 50, which is 48.
In each jar:
48/8 = 6
The remaining marbles are then put into the 9th jar.
50 - 48 = 2 in the 9th jar.
How many more marbles does she need for the 9th jar such that every jar has the same number of marbles?
All others have 6, the 9th has 2.
6 - 2 = 4
She needs 4 more marbles for the 9th jar.
someone please help me answer this!!
Answer:
17.9 units is the answer
Step-by-step explanation:
points are (-7,-2) and (9,6)
Pythagorean theorem can be written as,
[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{9-(-7))^2 + (6-(-2))^2}\\\\d=\sqrt{(16)^2+(8)^2} \\\\d=\sqrt{256+64} \\\\d=\sqrt{320} \\\\d=17.88[/tex]
Rounding off,
d = 17.9 units
The ratio of cherry trees to apple trees at an orchard is 4 to 9. If there are 184 cherry trees, use a proportion to find a, the number of apple trees.
I need help, pls help me?
Answer:
1 and 100
Step-by-step explanation:
Those are the chances of events
buys 5 apples for 2.60 dollars how much does one apple cost
Answer:
One apple cost $0.52.
Step-by-step explanation:
$2.60/5 = $0.52
$0.52 * 5 = $2.60
QUICK WHATS THE ANSWER
Answer:
132
Step-by-step explanation:
4 times 11 times 3 and that should be your answer
There are 2 girls for every 3 boys in Mrs. Sanchez' class. If there are 12 boys in the class, how many girls are there?
8 girls are there in Mrs. Sanchez' class.
What is unitary method?The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Based on the given conditions, formulate
2 girls ⇒ 3 boys
X girls ⇒ 12 boys
3X = 12 × 2
⇒ 3X = 24
⇒ X = [tex]\frac{24}{3}[/tex]
⇒ X = 8
Hence, 8 girls are there in Mrs. Sanchez' class.
Find out more information about unitary method here
https://brainly.com/question/14793162
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If you know the area of the circle how can you find its radius
Answer:
If we know the area of the circle we can find the radius by using the formula for
Area = πr²
Answer:
The diameter is always double the radius. Hence, the formula is derived by dividing the diameter by 2.
Step-by-step explanation:
Radius Formulas
Radius in Terms of Diameter d ⁄ 2
Radius in Terms of Circumference C ⁄ 2π
Radius in Terms of Area √(A ⁄ π)
Write the equation of the graphed circle.
The age of a mother is three times the age of her son. If the difference between their
ages 20 years find their present ages.
Answer:
[tex]Mother = 30\ years[/tex]
[tex]Son = 10\ years[/tex]
Step-by-step explanation:
Given
[tex]M = Mother[/tex]
[tex]S = Son[/tex]
From the first statement:
[tex]M = 3S[/tex]
From the second:
[tex]M - S = 20[/tex]
Required
Find M and S
We have:
[tex]M = 3S[/tex] and
[tex]M - S = 20[/tex]
Substitute [tex]M = 3S[/tex] in [tex]M - S = 20[/tex]
[tex]3S -S =20[/tex]
[tex]2S = 20[/tex]
Divide both sides by 2
[tex]S = 10[/tex]
Substitute [tex]S = 10[/tex] in [tex]M = 3S[/tex]
[tex]M = 3 * 10[/tex]
[tex]M = 3 0[/tex]
Hence;
[tex]Mother = 30\ years[/tex]
[tex]Son = 10\ years[/tex]
The dot plots show the numbers of adult books purchased by customers at two different bookstores on one day
Which statement is supported by the dot plots?
Pls explain!!!
Answer:
H mean of data for store 1 is greater than mean for store 2
Step-by-step explanation:
mode for store 1 = 3
mode for store 2 = 2
range for store 1 = 6
range for store 2 = 6
mean for store 1 = 3.3125
mean for store 2 = 2.588
median for store 1 = 3
median for store 2 = 2
A university council wants to determine the need for a new staff room. The council conducted a survey of the staff by randomly speaking to 860 staff members out of 2,844 staff members. The council found that 70% of those surveyed were in favor of building a new staff room. Assuming a 90% confidence level, which statement holds true?
As the sample size is appropriately large, the margin of error is 0.036.
As the sample size is appropriately large, the margin of error is 0.026.
As the sample size is too small, the margin of error is 0.026.
As the sample size is too small, the margin of error cannot be trusted.
To find a margin of error for a sample proportion, these assumptions must be met, where n is the sample size and is the sample proportion.
First rewrite the proportion of positive responses as a decimal number.
Now substitute the sample proportion and the sample size, 860, into the formulas for the assumptions to determine whether they are met.
Both values are greater than 10, so the assumptions are met, and the margin of error can be calculated.
Find the margin of error using this formula, where z is the critical value.
For a 90% confidence level, . Substitute the values of z, n, and into the formula for margin of error and evaluate.
Answer:
As the sample size is appropriately large, the margin of error is 0.026
Step-by-step explanation:
Which choice could be modeled by a linear function?
A. The amount, y, of radioactive material remaining after x years when decay occurs at rate 30% each year.
B. The amount of money, y, In an account after x years earning 4% interest compounded annually.
C. The height, y, of a ball after bouncing x times, if each bounce reaches 2/3 the previous height.
D. The monthly cost, y, to use a cell phone for x minutes at a rate of 4 cents per minute.
Answer:
D
Step-by-step explanation:
D is linear because it increases the same amount each time
Allie is 26 years old. This is half of her
brother Alex's age, plus 5 years.
How old is Alex?
Answer:
18
Step-by-step explanation:
Please helpppppppppppppppppppp
Answer:
[tex]8( 4 \sqrt{7} - \sqrt{18} ) = 8(4 \sqrt{7} - 3 \sqrt{2}) = 32 \sqrt{7} - 24 \sqrt{2} [/tex]
Answer:
the answer is
[tex]32 \sqrt{7} - 24 \sqrt{2} [/tex]
El area de un triángulo es de 63.6 cm2 . El largo de uno de sus lados es de 12 cm. Cuanto mide el otro lado?
Answer:
has visto los diarios de vampiros?
Step-by-step explanation:
X minus thirteen can be represented by what expression
Answer:
[tex]x - 13[/tex]
x minus thirteen = x - 13.
Answer:
x-13
Step-by-step explanation:
The 4 in 153,458 has _______________ the value of the 4 in 192,946.
Answer:
The 4 in 153,458 has ten times more the value than the 4 in 192,946.
Step-by-step explanation:
400 and 40
400 ÷ 40 = 10
Find the value of x in the triangle shown below 9 3
Answer:
x = 9.4868
Step-by-step explanation:
For this problem we can use the Pythagorean Theorem
Pythagorean theorem = [tex]a^2+b^2=c^2[/tex]
IN THIS CASE C = X
A and B are the side and base lengths of a right triangle.
C is the Hypotenuse side.
[tex]9^2+3^2=c^2[/tex]
Solve...
81 + 9 = [tex]c^2[/tex]
90 =[tex]c^2[/tex]
[tex]\sqrt{90}[/tex] = c
c = 9.4868
pls help! i’m giving brainliest :)
Shonda is making cookies with her family. They mix 2 cups of flour with a half cup of sugar. How many cups of sugar will they need if they used 8 cups of flour?
The probability distribution for a
random variable x is given in the table.
-5
-3
-2
0
2
3
Probability
.17
.13
.33
.16
.11
.10
Find the probability that -2