Answer:
the answer is 60 because 2 times 30 is 60
Step-by-step explanation:
SOLVE THESE PROBLEMS CORRECTLY TO BE MARKED BRAINLIEST!
1. Sophie wrote a two-digit number on the board. Max wrote the digit 3 to the right of it and got a number that is bigger than the Sophie's number by 372. What number did Sophie write on the board?
2. Some kids went on a bike ride. The ride was six hours long and the kids traveled 54 miles. For part of the ride they biked at a speed of 7 mph and for part of the ride they biked at a speed of 11 mph. For how long did they bike at the first speed, and for how long at the other speed?
3. I left Boston for Washington, DC, at 7:00 am. At first, my speed was 55 mph; then it was 75 mph. I traveled 630 miles in 10 hours. At what time did I begin to drive faster?
Thanks!
Answer: 1= 41
2= 3 hours biking at the other speed.
3= We began to drive at 75 mph at 1:00 p.m
Step-by-step explanation:
3= x/55 + (630 - x)/75 = 10
75x + 55 * (630 - x) = 41,250 (4,125 as Lowest common multiple)
75x + 34,650 - 55x = 41,250
20x = 41,250 - 34,650 (Subtracting 34,650 at both sides)
20x = 6,600
x = 6,600/20
x = 330 ⇒ 630 - x = 300
Time we drove at 55 mph = 330/55 = 6 hours
Time we drove at 75 mph = 300/75 = 4 hours
We began to drive at 75 mph at 1:00 p.m. (7 am + 6 hours)
hope this helps :)
What is the minimum value of the cube root parent function on -8≤x≤8?
Minimum means smallest, so what is the smallest number possible for this set?
-8
---
hope it helps
Answer:
-2
Step-by-step explanation:
Write an equation of the line in slope -intercept form ( due today!)
Answer: The answer would be y=1/3x-3
is going to plant y vegetable seeds in one garden and 3y+8 vegetable seeds in another. How many seeds is Frank going to plant?
Answer:
4y + 8 vegetable seeds
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Terms/CoefficientsStep-by-step explanation:
We know that Frank has 2 gardens, one with y vegetable seeds and another with 3y + 8 vegetable seeds. If we are trying to find the total amount of seeds planted, we must add the 2 gardens together:
Garden 1: y
Garden 2: 3y + 8
Garden 1 + Garden 2 = Total veggie seeds
y + 3y + 8 = Total veggie seeds
Total veggie seeds = 4y + 8
Identifying Functions from Tables
Try
Determine which of the following relations is a function.
V
2
y
੫
y
10
x
-3
y
2
-10
-8
-4
2
0
1
5
-1
1
-2
4
כ
-2
3
2
0
2
1
2
2
Solo
lolol
-5
1
2.
4.
2.
6
-10
3
4
4
6
5
7
Answer:
im confused please explain better
Step-by-step explanation:
bill js a builder. On Monday he msde mortar mix. he used 24kg of sand and 5kg of cement. on tuesday bill will make the same type of mortar mix. he will use 36kg of sand. how much cement does he need to make the same type of mortar mix?
Answer: 7.5kg
Step-by-step explanation:
Since Bill made mortar mix and he used 24kg of sand and 5kg of cement. This means that for 1 kg of cement, (24/5) = 4.8 kg of sand is used.
Therefore, when he uses 36kg of sand, the kg of cement used will be:
= 36 / 4.8
= 7.5 kg
Therefore, he'll use 7.5kg of cement and 36kg of sand.
I WILL GIVE BRAINLIEST :)
A car repair shop charges an hourly rate plus a pickup and delivery fee. The graph below represents the relationship between the total cost of the repair, including pickup and delivery fee, and the number of hours it takes the shop to complete the repairs.
Answer: I got 50x+$75 but I’m not too sure for the last step
Step-by-step explanation:
Answer:
y=50x+75
Step-by-step explanation:
y=125=225-125 Divide 3-1 (x-1)
y-125=50(x-1)
y=50x-50+125
y=50x+75
convert 576,904,320 using scientific notation
Answer:
5.76904320x 10^8
Step-by-step explanation:
5.76904320x 10^8
Please find the area of of the shaded polygon
Answer:
i think it might be 15... im not sure, im not good at math but im good with finding the answers to these type of problems
Step-by-step explanation:
hope this helps
What is the surface area?
5 yd
4 yd
5 yd
6 yd
6 yd
Find the errors and correct the following mathematical sentences.
Answer:
ix) (2a + 3)² = 4a² +12a + 9
x) a) x² + 7x + 12 = (-3)² + 7(-3) + 12 = 9 -21 + 12 = 0
b) x² - 5x + 6 = (-3)² - 5(-3) + 6 = 9 + 15 + 6 = 30
c) x² + 5x = (-3)² + 5(-3) = 9 -15 = -6
HELP ME PLEASE
bsjsudhdhehe
I need 5 questions answered!! PLEASE!
1. Is the expression 5x + 7 - 2x equivalent to 5x - 2x + 7?
2. What property can be used to say that 12x + 3 is equivalent to 3(4x +1)?
3. Use the associative property to simplify the following expression:
(2x + 3y) + 5y
4. Which expression is equivalent to 5(4x + 3) - 2
A. 18x + 15
B. 18x + 3
C. 7x + 8
D. 2x +8
I WILL ADD QUESTION 5 TO THE COMMENTS!
Answer:
1. Yes
2. Distributive property
3. 2x+8y
4. I'm assuming its supposed to say 5(4x+3)-2x otherwise none of the options work, so the answer for that would be A
5. C
The perimeter of a square is 52 cm.
Calculate the area of the square
Answer:
[tex]169cm^2[/tex]
Step-by-step explanation:
The perimeter is the sum of the side lengths of the shape. Since a square has equal side lengths, each side must be the same. Divide 52/4=13cm. 13cm is the length of 1 side. Area is length times width, and since each side is 13, multiply 13cm*13cm to get the area, which is [tex]169cm^2[/tex],
If this helped, brainliest answer would be greatly appreciated!
Answer:
169cm^2
Step-by-step explanation:
Since it's a square both of the lengths of the different sides are the same. (A square has 4 sides, therefore we can form an equation : 4x=52)
When you solve for x which determined the length of one single side (x=52/4) and you get 13.
Using the formula for the area of a square a^2
with a being 13, this means the area is 13^2= 169
math, i can give you brainliset just help me with the two questions :)
Answer:
2. the interquartile range is 20
3. 80 is the median.
Step-by-step explanation:
have a nice day.
The ratio of the number of apples to oranges is 5:4. If there is a total of 135 apples and oranges, how many apples are there?
Answer:
The number of appleis 108
Solve for X
I would really appreciate any help! I need to finish this trigonometry course to graduate.
Round 1688 to the nearest hundred
1688 to the nearest hundred would be 1700
Answer:
The answer is 1700
Step-by-step explanation:
Have a great day.
The physical plant at the main campus of a large state university receives daily requests to replace fluorescent light bulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 47 and a standard deviation of 7. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 47 and 68
Answer:
The approximate percentage of lightbulb replacement requests numbering between 47 and 68 is 49.85%.
Step-by-step explanation:
The Empirical Rule states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.
Approximately 95% of the measures are within 2 standard deviations of the mean.
Approximately 99.7% of the measures are within 3 standard deviations of the mean.
In this problem, we have that:
Mean of 47
Standard deviation of 7
What is the approximate percentage of lightbulb replacement requests numbering between 47 and 68?
The normal distribution is symmetric, which means that 50% of the measures are below the mean and 50% of the above.
Between 47 and 68:
68 = 47 + 7*3
So 68 is three standard deviations of the mean.
Of the 50% above the mean, approximately 99.7% are between the mean of 47 and 3 standard deviations above the mean, which is 68. So
0.5*0.997 = 0.4985
0.4985*100 = 49.85%
The approximate percentage of lightbulb replacement requests numbering between 47 and 68 is 49.85%.
Students recruited at the cafeteria at Hope College were blindly given a single Skittles® candy to put in their mouth. They were told the five possible flavors and then were asked which flavor they had. Of the 154 healthy students tested, 78 gave the correct answer. Of the 118 students tested who had stuffy or runny noses, 44 gave the correct answer.
1. Did the study involve random sampling, random assignment, both, or neither?
2. An appropriate analysis of the data shows that there is strong evidence that healthy students were more likely to give the correct answer. Is it appropriate to conclude that the health of the student affects ability to taste? Why or why not?
Answer:
1) both
2) Yes. It is appropriate to conclude that the health of the student affects ability to taste.
Step-by-step explanation:
Random Sampling is done when each element of the sample has equal probability of being chosen. In both the samples of healthy and runny nose students each student has equal probability of being tested.
Random Assignment is one in which there is a control group and experimental group. The control group contains all the participants and each participant has the equal probability of being placed in the experimental group. For example in this experiment each student has equal probability of being tested with the given chocolate bar.
2) Yes. It is appropriate to conclude that the health of the student affects ability to taste.
the probability of success in healthy student is 78/154= 0.5065 = 50.65%
the probability of success in runny nose student is 44/118= 0.3729 = 37.29%
From this we see the probability of success is more in healthy students as compared to runny nose students
50.65> 37.29
Therefore it is appropriate to conclude that the health of the student affects ability to taste.
(Need help) (ASAP)
Point: 18
Answer:
10
Step-by-step explanation:
How much will a shopper save on a TV that is on sale for 25% off the regular price of $399.99
Answer: $99.99
Step-by-step explanation:
$399.99 * .25 (discount) = $99.99
A group of people signed up for a bus tour that costs a total of $1120. If they can increase the size of their group by 7 people, the amount each person has to pay decreases by $8. How many people are currently signed up?
Answer: 160
Step-by-step explanation:
A mouse is moving through a maze and must make four turns where it can go either left or
right. The mouse will escape the maze if it makes three lefts and one right, in any order.
(a) To the right, draw a tree diagram
of all possible routes the mouse
could take.
(b) Using your tree diagram, create
an organized list of the routes. For
example, a route of right, left, left,
right could be listed as RLLR.
(C) What is the probability the mouse
escapes the maze if all turns are
randomly made?
A middle school took all of its 6th grade students on a field trip to see a ballet at a theater that has 4900 seats. The students filled 1078 of the seats in the theater. What percentage of the seats in the theater were filled by the 6th graders on the trip?
Recall that the Fibonacci Sequence is defined by the recurrence relation, a0 = a1 = 1 and for n ≥ 2, an = an−1 + an−2 . a. Show that f(x) = 1 1−x−x 2 is the generating function of the Fibonacci Sequence. b. Find ???? and β such that 1 − x − x 2 = (1 − ????x)(1 − βx). c. Find A and B in terms of ???? and β, such that 1 1−x−x 2 = A 1−????x + B 1−βx. d. Use the results of the previous parts to obtain a formula for an.
Answer:
Step-by-step explanation:
From the given information:
[tex]a_n = a_{n-1} + a_{n-2}; \ \ \ n \ge 2 \\ \\ a_o = 1 \\ \\ a_1 =1 \ \ \ \ \ since \ \ a_o = a_1 = 1[/tex]
A)
[tex]a_n - a_{n-1} - a_{n-2} = 0 \\ \\ \implies \sum \limits ^{\infty}_{n=2}(a_n -a_{n-1}-a_{n-2} ) x^n = 0 \\ \\ \implies \sum \limits ^{\infty}_{n=2} a_nx^n - \sum \limits ^{\infty}_{n=2} a_{n-1}x^n - \sum \limits ^{\infty}_{n=2}a_{n-2} x^n = 0 \\ \\ \implies (a(x) -a_o-a_1x) - (x(a(x) -a_o)) -x^2a(x) = 0 \\ \\ \implies a(x) (1 -x-x^2) -a_o-a_1x+a_ox = 0 \\ \\ \implies a(x)(1-x-x^2)-1-x+x=0 \\ \\ \implies a(x) (1-x-x^2) = 1[/tex]
[tex]\mathbf{Generating \ Function: a(x) = \dfrac{1}{1-x-x^2}=f(x)}[/tex]
B)
[tex]If \ \ 1 -x-x^2 = (1 - \alpha x) ( 1- \beta x) \\ \\ \implies 1 -x - ^2 = 1 + \alpha \beta x^2 - ( \alpha + \beta )x \\ \\ \text{It implies that:} \\ \\ \alpha \beta = -1 \\ \\ \alpha + \beta = 1 \\ \\ \implies \alpha = ( 1-\beta) \\ \\ ( 1- \beta) \beta = -1 \\ \\ \implies \beta - \beta^2 = -1 \implies \beta - \beta^2 -1 = 0\\ \\ \beta = \dfrac{-(-1) \pm \sqrt{(-1)^2 -4(1)(-1)}}{2(1)}[/tex]
[tex]\beta = \dfrac{1\pm \sqrt{5}}{2} \\ \\ \beta = \dfrac{1 + \sqrt{5}}{2} \ \ and \ \ \alpha = \dfrac{1 - \sqrt{5}}{2}[/tex]
C)
[tex]\dfrac{1}{1-x-x^2}= \dfrac{A}{1-\alpha x}+ \dfrac{\beta}{1-\beta x} \\ \\ = \dfrac{A(1-\beta x) + B(1-\alpha x)}{(1-\alpha x) (1 - \beta x)} \\ \\ = \dfrac{(A+B)-(A\beta+B\alpha)x}{(1-\alpha x) (1-\beta x)}[/tex]
[tex]\text{It means:} \\ \\ A+B=1 \\ \\ B = (1-A) \\ \\ A\beta+ B \alpha =0 \\ \\ A\beta ( 1 -A) \alpha = 0 \\ \\ A( \beta - \alpha ) = -\alpha \\ \\ A = \dfrac{\alpha}{\alpha - \beta } \\ \\ \\ \\ B = 1 - \dfrac{\alpha }{\alpha - \beta} \implies \dfrac{\alpha - \beta - \alpha }{\alpha - \beta } \\ \\ =\dfrac{-\beta }{\alpha - \beta} \\ \\ \mathbf{B = \dfrac{\beta }{\beta - \alpha }}[/tex]
D)
[tex]\text{The formula for} a_n: \\ \\ a(x) = \dfrac{\alpha }{\alpha - \beta }\sum \limits ^{\infty}_{n=0} \alpha ^n x^n - \dfrac{\beta}{\beta - \alpha }\sum \limits ^{\infty}_{n=0} \beta x^n \\ \\ \implies \sum \limits ^{\infty}_{n =0} \dfrac{\alpha ^{n+1}- \beta ^{n+1}}{\alpha - \beta}x^n \\ \\ a_n = \dfrac{\alpha ^{n+1}- \beta ^{n+1}}{\alpha - \beta } \\ \\ \\ a_n = \dfrac{1}{\sqrt{5}} \Big (\Big( \dfrac{\sqrt{5}+1}{2}\Big)^{n+1}- \Big ( \dfrac{1-\sqrt{5}}{2}\Big) ^{n+1}\Big)[/tex]
please help me with this question!!!!!!!!!!!!!
Answer:
3 times 4 = 12 BIG BRAIN!!!
Answer:
12/4 =c
Step-by-step explanation:
What is (3 x 20) + 9 and what is (4 x 100) + 20?
Answer:
(3 x 20) + 9 = 69
4 x 100) + 20 = 420
Answer:
(3x20) + 9 is 69
(4x100) + 20 is 420
what is 4/5÷3 explain
Answer:
4/15
Step-by-step explanation:
4/5 ÷ 3 =
4/5 x 1/3 = 4/15
Answer:
4/15 = 0.2667
The answer is rounded to the nearest four decimal points if necessary.
Step-by-step explanation:
Here we will show you how to calculate 4/5 divided by 3. We will give you the answer in fraction form and in decimal form.
Here is 4/5 divided by 3 displayed mathematically in colors:
4/5 divided by 3
The numbers in 4/5 divided by 3 are labeled below:
4 = numerator
5 = denominator
3 = whole number
To make it a fraction form answer, you keep the numerator and multiply the denominator by the whole number to make a new denominator:
4/5x3=4/15
Thus, the answer to 4/5 divided by 3 in fraction form is:
4/15
To make the answer to 4/5 divided by 3 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:
4/15 = 0.2667
The answer is rounded to the nearest four decimal points if necessary.
Please answer this correctly without making mistakes I want ace expert and genius people to answer this correctly without making mistakes my homework is due today I have to finish this today
Answer:
24 i think
Step-by-step explanation:
I evaluated using he given value
