Answer:.
Step-by-step explanation:
Great Free Practice Problems
(these problem is all "find the number" problems)
1. In a two-digit number, the tens digit is 5 less than the unit digit. The number itself is five more than three times the sum of its digits. What is the number?
2. The sum of digits of a two-digit number is 11. The reverse number is 9 greater than the original number. Find the reverse number.
3. The sum of the digits in a two-digit number is 14. If you reverse and double the original number, and then add the results to the original number, the sum is 222. Find the original number.
4. The unit digit of a two-digit number is four more than the then digit. If the number is doubled it will be q more than the reversed number. Find the number
5. In a three-digit number, the tens digit is the same as the hundreds digit. The ones digit of this number is equal to 1/3 of the sum of the other two digit. Find the number if the sum of all its digits is equal to 24
6. In a two-digit number, the units digit is six less than three times the tens digit. Four times the unit digit minus five times the tens digit equals 11. Find the digits.
Please answer all the problems ;)
Answer:
1) 38
2) 56
3) 86
4) 37
5) 6 i think
6) 93
Step-by-step explanation: sorry if any of these are wrong
Answer:
The answer is 38. Sorry if it's wrong.
What is the interquartile range of the following data set?
4, 6, 10, 13, 18, 28, 34, 46, 50, 58
O A. 38
O B. 36
O C. 40
O D. 46
Answer:
Quartiles are special percentiles. The first quartile, Q1, is the same as the 25th percentile, and the third quartile, Q3, is the same as the 75th percentile. The median, M, is called both the second quartile and the 50th percentile.
Step-by-step explanation:
please mark me as the brainliest answer and please follow me.
Answer: 36
Step-by-step explanation:
Write an equation in slope-intercept form for each table below.
Show how you found the slope and Y-intercept
Answer:
i. y=2x
ii. y=x+6
iii. y=-2x-6
iiii. y=-4x+3
iiiii. y=4x-3
Step-by-step explanation:
You can find the slope of the line by putting y2-y1/x2-x1
All you have to do is choose 2 points. Y2 is the second number y and x2 is the second number x. Y1 is the first number y and X1 is the first number X. To find y-intercept you look on the table and see where X is 0 and Y is any number that is the y-int. For example 5 there is no X=0 on the table so you put it in the point slope formula which is y-y1=m(x-x1) where you use the points from the slope. You multiply m to x and m to x1 where you will end up with y-y1=mx+mx1 then you add the y1 to mx1 where you will get the y intercept
Determine the ratio equivalent to cos Q.
=========================================================
Work Shown:
The triangles are similar, which means the corresponding angles are congruent. In this case, we can say angle K = angle Q. Note how K and Q are the second letters of JKL and PQR respectively. The order matters.
Because angle K = angle Q, we can use information from triangle JKL to get information about triangle PQR.
We can say the following:
cos(angle) = adjacent/hypotenuse
cos(K) = LK/JK
cos(K) = 5/13
cos(Q) = 5/13 ... plug in K = Q
According to a survey, 10% of Americans are afraid to fly. Suppose 1100 Americans are sampled. a) What is the probability that 121 or more americans in the survey are afraid to fly
Answer:
The probability that 121 or more Americans in the survey are afraid to fly is 0.1335.
Step-by-step explanation:
Let X denote the number of Americans afraid to fly.
The proportion of Americans afraid to fly is, p = 0.10/
A random sample of n = 1100 Americans are selected.
The random variable X follows a Binomial distribution with parameters n = 1100 and p = 0.10.
But the sample selected is too large and the probability of success is close to 0.50.
So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:
1. np ≥ 10
2. n(1 - p) ≥ 10
Check the conditions as follows:
[tex]np=1100\times 0.10=110>10\\\\n(1-p)=1100\times (1-0.10)=990>10[/tex]
Thus, a Normal approximation to binomial can be applied.
So, [tex]X\sim N(np,\ np(1-p))[/tex]
Compute the probability that 121 or more Americans in the survey are afraid to fly as follows:
[tex]P(X\geq 121)=P(\frac{X-np}{\sqrt{np(1-p)}}>\frac{121-110}{\sqrt{99}})\\\\=P(Z>1.11)\\\\=1-P(Z<1.11)\\\\=1-0.86650\\\\=0.1335[/tex]
Thus, the probability that 121 or more Americans in the survey are afraid to fly is 0.1335.
A line parallel to -6x + 2y = 8 would have a slope of _____.
Answer:
Slope of 3
Step-by-step explanation:
-6x + 2y = 8
Add 6x
2y = 6x + 8
divide by 2
y = 3x + 4
Slope = 3
Parallel lines have the same slope
The Academy for Academic Excellence has just announced their winner for the most successful student in mathematics This student will receive a grant for their college education as well as national recognition for academic excellence in the field of mathematics. The grant will cover $12,177.17 of the cost of school per year for 5 years. If the initial amount is invested into an account over the five years, paying an annual interest rate of 5,5%, and you are to withdraw from this account until the remaining balance after the 5 years is zero dollars, determine the initial amount of the grant. Round your answer to the nearest dollar. a $52,000 c. $60,886 b. $55,200 d. $64,235 LES
Answer:
A. $52,000
Step-by-step explanation:
The initial amount of the grant is $52,000. The correct option is a.
What is annuity?An annuity is a financial product that provides an individual with a series of regular payments in exchange for an initial investment or a series of payments.
Annuities are commonly used to generate income in retirement, but they can also be used for other purposes, such as covering the future expenses of a dependent or providing a guaranteed income stream for a set period of time.
We can use the formula for the present value of an annuity to find the initial amount of the grant:
PV = A * ([tex](1 - (1 + r)^{(-n)[/tex]) / r)
Where PV is the present value, A is the annual payment, r is the annual interest rate, and n is the number of periods.
Substituting the given values, we get:
PV = 12,177.17 x ((1 - [tex](1 + 0.055)^{(-5)[/tex]) / 0.055)
PV ≈ 51,765.57
Rounding to the nearest dollar, the initial amount of the grant is $52,000.
Therefore, the answer is option (a).
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I need help with this
each pumpkin costs $10.50
63/6 = 10.5 or $10.50 and $10.50 x 2 = $21
that's all I got sorry ~(>_<。)＼
How do you do 20 / 4/5
Answer:
25
Step-by-step explanation:
you can write this equation as 20 ÷ [tex]\frac{4}{5}[/tex]
so change the division sign to multiplication by flipping the divisor ( [tex]\frac{4}{5}[/tex] )
this means you now have 20 x [tex]\frac{5}{4}[/tex]
so you can simplify 20 and 4, this makes the 4 into a 1 and the 20 into a 5
you now have 5 x [tex]\frac{5}{1}[/tex]
this is the same thing as 5 x 5
multiply it, and you can see that the answer is 25
Please help
Picture inserted
Multiple choice
Will appreciate it if u help!
Answer: B) Linear; it can be written as y = -3x-6
We subtract 6 from both sides to go from the original equation to -3x-6 = y
Then we flip both sides to end up with y = -3x-6
This is in slope intercept form y = mx+b with m = -3 as the slope and b = -6 as the y intercept.
Admission to a school play costs BD 12.50 . Form an inequality and solve it to find the maximum number of tickets Aslam can buy with BD 250. *
a) 18
b) 20
C) 22
Answer:
Step-by-step explanation:
C) 22
the pythagorean theorem
Hii student!
_________________________________________________________
[tex]\leadsto\parallel\boldsymbol{Answer.}\parallel\gets[/tex]
Option a
________________________________________________________
[tex]\leadsto\parallel\boldsymbol{Explanation.}\parallel\gets[/tex]
We can use the Pythagorean Theorem (below) to solve for x, the shorter leg of the right triangle.
The Pythagorean Theorem[tex]\bullet\,\,\,\boldsymbol{a^2+b^2=c^2.}\bullet[/tex]. in which a and b are the two legs of the right triangle, and c is the hypotenuse, the longest side of the right triangle. This side is opposite the right angle ([tex]90\textdegree[/tex]).
In this problem we're given
Hypotenuse = [tex]\sqrt{218}[/tex]Long Leg = [tex]\boldsymbol{13}[/tex].and we're asked to solve for x, the short leg.
So we stick in the values into the formula.
[tex]\boldsymbol{13^2+b^2=(\sqrt{218})^2}[/tex]
Simplify!
[tex]\boldsymbol{169+b^2=218}[/tex]
Simplify!
[tex]\boldsymbol{b^2=218-169}[/tex]
[tex]\boldsymbol{b^2=49}[/tex]
Next, take the square root of both sides
[tex]\boldsymbol{b=7}[/tex]
[tex]\boldsymbol{\therefore,\:the\:answer\:is\:option\:a}[/tex]
Hope that this helped! Best wishes.
[tex]\textsl{Reach far. Aim high. Dream big.}[/tex]
[tex]\boldsymbol{-Greetings!-}[/tex]
________________________________________________________
Write an equation in slope-intercept form of the line that passes through (7,2) and (2,12)
If a fair coin is tossed 9 times, what is the probability, to the nearest thousandth, of
getting exactly 4 tails?
Answer:
=0.444
Step-by-step explanation:
probability= expected outcome = 4
total outcome 9
4 into decimal = 0.444( to the nearest thousandths- 3dp)
9
The probability is 24.609%
What is probability?The mathematical subject of probability deals with the outcomes of random events. The term "probability" refers to the possibility or chance of an outcome. It clarifies the likelihood of a particular occurrence. We use phrases like "It will probably rain today," "he will probably pass the test," "there is very little chance of getting a storm tonight," and "most probably the price of onion will go high again" all the time.
Given a coin is tossed 9 times, and to find the probability of exact four heads,
the probability for condition given by binomial probability ⁿCₓ[(p)ˣ(q)ⁿ⁻ˣ]
where p is probability of tail = 1/2 (favorable outcome)
q is probability of head = 1/2: (1 - p)
n = total outcome = 9
x = 4
ⁿCₓ[(p)ⁿ(q)ⁿ⁻ˣ] = ⁹C₄[(1/2)⁴(1/2)⁵]
= [tex]\frac{9!}{4!(9 - 4)!}[/tex] [1/16 x 1/32]
= [tex]\frac{9 x 8 x7 x 6 x 5!}{4! x 5!}[/tex](512)
126/512 = 0.24609
= 24.609%
Hence the probability, to the nearest thousandth is 24.609%.
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Which of the following fractions is not
equivalent to a repeating decimal?
A 1 2/3
B 5 1/12
C 3 3/8
Answer:
C. 3 3/8
Step-by-step explanation:
A. 1.6666666666666666666666666
B. 5.08333333333333333333333333
C. 3.375
A number increased by 4 is no more than -18.
Answer:
n+4≤-18
This might be it
A word in a book is 0.009 meter long. Kai looked at the word with a lens that made it look 100 times as large as the actual word. How long did the word look?
Answer:
0.9 meters long.
Step-by-step explanation:
0.009m times 100=0.9 m
A circle with a 32 inch diameter has a central angle that intercepts an arc measuring approximately 75.36 centimeters. Which option describes how to determine this angles measure in radians?
A. Divide 75.36 by 16
B. Divide 75.36 by 32
C. Divide 16 by 75.36
D. Divide 32 by 75.36
Complete Question
A circle with a 32 inch diameter has a central angle that intercepts an arc measuring approximately 75.36 inches. Which option describes how to determine this angles measure in radians?
A. Divide 75.36 by 16
B. Divide 75.36 by 32
C. Divide 16 by 75.36
D. Divide 32 by 75.36
Answer:
A. Divide 75.36 by 16
Step-by-step explanation:
The formula for Arc length is given as:
S = r θ
Where S = arc length
r = radius
We are told that:
Diameter of a circle = 32 inches
Radius of a circle = Diameter/2
= 32/2 = 16
Arc Length = 75.36 centimeters
The formula for Central angle =
θ = Central angle
θ = S/r
= 75.36/16
Option A is correct
The correct answer is option A. which is Divide 75.36 by 16
What is a circle?
A circle is a two-dimensional geometry on the plane having a centre point and the circular line is drawn equidistant from the centre point.
The formula for Arc length is given as:
S = r θ
Where S = arc length
r = radius
We are told that:
Diameter of a circle = 32 inches
The radius of a circle = Diameter/2
r = 32/2 = 16
Arc Length = 75.36 centimeters
The formula for Central angle =
θ = Central angle
θ = S/r
θ= 75.36/16
Therefore the correct answer is option A. which is Divide 75.36 by 16
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Help pleaseeeee
Find the unit rate.
Hours
Miles
X
y
1
40
2
80
3
120
It’s one of these
O 120 miles / 3 hours
O 80 miles / 2 hours
O 40 miles / 1 hour
Answer:
The answer is 40miles in 1 hour
If a single card is drawn from a standard 52-card deck, in how many ways
can it be a heart or a King? Use the general additive principle.
Answer:
22
Step-by-step explanation:
Julie bought a shirt for $35.00, a purse for $27.00 and a belt for $13.00. When the cashier rang up her total, she discovered everything was on sale for 30% off. What was Julie's total with the sale price?
Answer: 52.5
Step-by-step explanation:
35 dollars 30% off is $24.5, 27 dollars 30% off is $18.90, and 13 dollars 30% off is $9.10 so all together it equals 52.5.
Is assert qualitative or quantitative? Please answer
Answer:
Qualitive
Step-by-step explanation
‘this is because x is negative and graphed it is positive
-University of Indiana Professor
Given: △ABD cong △CBD. Find each value. (#6)
Answer: m<C= 31
Step-by-step explanation:
To find m<C: Since the triangles are equal, we know that (4x+10) is equal to 90. Then when you put them equal to each other and solve for x you get X=20. Then all you have to do is plug that x value (20) into the equation for the angle of C (x+11). Then you get that C=31 degrees.
What is the expression of 22x(4+3+1)
Answer:
176x
Step-by-step explanation:
Step 1. Add the numbers
22x(4+3+1)
22x(8)
Step 2. Multiply the numbers
22x times 8= 176x
A grocery bag contains x apples, each weighing One-third of a pound, and y pounds of grapes. The total weight of the grocery bag is less than 5 pounds. Which graph represents the possible numbers of apples and pounds of grapes that can be in the bag?
Answer:
The answer on edg is B. Points (0,5) and (15,0)
Step-by-step explanation:
The equation looks like this 1/3x + y < 5
Answer:
B. The second graph
Step-by-step explanation:
Can someone help me
Answer: 3:8
Step-by-step explanation:
Answer:
it is 3:8
Step-by-step explanation:
they are raitos so if its 3 blue marbles to 8 red marbles it will be 3:8 if its opposite it will be 8:3 pretty simple but im here to help <3
Help pls it’s due soon make sure to follow the steps I don’t get it
Marti’s cat weights 12.37 pounds What is this weight written as a mixed number?
9514 1404 393
Answer:
12 37/100 pounds
Step-by-step explanation:
Twelve and thirty-seven hundredths is written as ...
12 37/100
Evaluate.
(0.03)2=
Need help plz
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[tex]2(0.03) = 2 \times \frac{3}{100} = \\ [/tex]
[tex] \frac{2 \times 3}{100} = \frac{6}{100} = 0.06 \\ [/tex]
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The value of the expression is 0.0009.
We have,
To explain the process of evaluating (0.03)², we need to understand the concept of exponentiation and how it applies to decimal numbers.
When we raise a number to the power of 2 (or square it), we are essentially multiplying the number by itself.
In this case, we are squaring the decimal number 0.03.
To calculate (0.03)², we multiply 0.03 by itself:
= 0.03 x 0.03
= 0.0009
In decimal form,
0.03 squared is equal to 0.0009.
This process follows the general rule of exponentiation, where raising a number to a power means multiplying the base number by itself the specified number of times.
In this case, we square 0.03 by multiplying it by itself once, resulting in 0.0009.
Thus,
The value of the expression is 0.0009.
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Simplify the expression 10a-7b+11+8b-b-12
Answer:
10a-16b+23
Step-by-step explanation:
First, you see what terms are alike. Then you add those like terms. For example with this expression, you add 7b+b+8b, resulting in 16b. If you are confused by the single b variable standing alone, there is basically a 1 in front of it, so you add it as 1b. 11 and 12 are like terms, for they don't have any variables attached to them. 10a stands alone because no other terms have an a variable. The simplified expression is 10a-16b+23.
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The simplified value of the expression 10a - 7b + 11 + 8b - b - 12 is 1a - 1.
Given Expression:
10a-7b+11+8b-b-12
To simplify expression, first solve the like terms as
10a-7b+11+8b-b-12
= 10a -7b + 8b - b - 12 + 11
Now, -7b + 8b - b = -7b + 7b = 0
and, -12 + 11 = -1
Substituting the simplified value in 10a-7b+11+8b-b-12 gives
= 10a + 0 - 1
= 10a - 1
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