Answer:
A student answered 45 problems on a test correctly and received a
grade 90%. How many problems were on the test, if all the problems were worth the same number
were worth the same number of marks? (Round to the nearest whole
number)
100/90 * 45 = 50
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Explain what is the difference between fractions and percentages
and also state the relationship they have with each other
The numbers which are decimals by nature can be represented in the form of fractions. For example, 0.5 can also be written as 5/10. ... Percentages refer to decimal numbers to the base 100. These are represented by a % (percent sign).Since a percent is a ratio a ratio can be written as a fraction. This means any of these forms can be converted to any of the others.
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40% of the 7920 visitors to an amusement park were children. 25% of these children and 1/3 of the adults were repeat visitors. How many percent of the visitors were visiting the amusement park for the first time?
Total number of visitors = 7920
Find the number of children:
Children = 40% of 7920
Children = 0.4 x 7920
Children = 3168
Find the number of adults:
Adult = 7920 - 3168 = 4752
Find the number of repeated visitors that are children:
Repeated visitors = 25% x 3168
Repeated visitors = 0.25 x 3168
Repeated visitors = 792
Find the number of children that are visiting for the first time:
First time visitors = 3168 - 792 = 2376
Find the number of repeated visitors that are adult:
Repeated visitors = 1/3 x 4752
Repeated visitors = 1584
Find the number of adults that are visiting for the first time:
First time visitors = 4752 - 1584 = 3168
Find the total number of first time visitors:
Total number of first time visitors = 3168 + 2376 = 5544
Answer: There are 5544 visitors that are visiting for the first time
Solve the inequality, write the answer in interval notation.
9514 1404 393
Answer:
(-∞, 2-√7) ∪ (2+√7, ∞)
Step-by-step explanation:
The factored form of a polynomial is helpful for solving related inequalities. For quadratics with two real zeros, the sign changes at each zero. If the leading coefficient is positive, the sign is positive to for x-values "outside" either zero, and is negative between the zeros.
Your inequality can be written in standard form as ...
x² -4x -3 > 0
x² -4x +4 -7 > 0
(x -2 -√7)(x -2 +√7) > 0 . . . . . factor the difference of squares (x-2)² -7
The zeros are at x=2-√7 and x=2+√7, so the product of these factors will be positive for x < 2-√7 and x > 2+√7. The solution in interval notation is ...
(-∞, 2-√7) ∪ (2+√7, ∞)
_____
Additional comment
We suspect a typo in the problem statement. If it were to read ... > -3, then the zeros would be at 1 and 3, and the solution would be (-∞, 1)∪(3, ∞).
If 3 is the input for this function machine, what is the output?
x² + 2x +1
(4×10)+(7×1/10) in fractions
Answer:
I think it's 308
...........
Trong tháng 05, tại cơ sở sản xuất có tài liệu sau. Tính thuế TTĐB mà cs phải nộp trong tháng. 1. Mua 5.000 lít rượu nguyên chất, với giá mua chưa thuế tiêu thụ đặc biệt 20.000đ/lít, thuế suất thuế TTĐB 65% 2. Trong tháng cơ sở sử dụng toàn bộ NL trên và sản xuất 15.000 chai rượu thuốc và đã tiêu thụ hết, với giá bán chưa thuế GTGT 120.000đ/chai, thuế suất TTĐB rượu thuốc 65%.
Answer:
what's this
Step-by-step explanation:
I cannot anderstand
Which statement compares the two numbers correctly?
7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 ________ 73.293
7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 < 73.293
7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 = 73.293
73.293 > 7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001
7 x 10 + 3 x 1 + 3 x 0.1 + 8 x 0.01 + 5 x 0.001 > 73.293
Answer:
last statement compares the two numbers correctly
Step-by-step explanation:
reason:when we add all the products of the first set of numbers we get 73.385 where the second number is only 73.293 which is less than 73.385
PLEASE HELP
I WILL MARK BRAINLIEST
maths 5x² - x(x + 4)
You deposited $2,500 in a savings account
that yields 5% simple interest. You keep your
money in the account for 10 years. How much
interest will you earn?
我知道答案 但是如果你懂中文，我不知道怎么去掉这个语言回复
what is the LCD of 1/10 and 1/12
Answer:
60
Step-by-step explanation:
You need to find a denominator where both numbers are able to be divisible. 60 is lowest number as the new fractions would be 6/60 and 5/60
Cecilia set a goal to raise $4,800.00 for her favorite charity this year. She has decided to participate in a walk-a-thon to help her reach her goal. She found 30 sponsors and each sponsor has agreed to give her $0.50 for each mile that she walks in the walk-a-thon. If she walks a total of 25 miles, how much money will she still need to raise in order to reach her goal for this year?
A.
$4,675.00
B.
$5,175.00
C.
$4,762.50
D.
$4,425.00
Answer:
4,425$
Step-by-step explanation:
find the amount of Money raised
buy multiplying the amount raised per mile by each sponsor with the number of sponsor and the number of miles walked
[tex](30 \times 0.50) \times 25 = 375[/tex]
to find the remaining, subtract the raised amount from the intended amount.
[tex]4800 - 375 = 4425[/tex]
Do you do anything with excel?
like when you breathe out when you stop in stops breathing
Caleb rode his bike for
3
1
2
miles in the morning. Then he rode his bike another
2
1
2
miles in the afternoon.
Answer:
6 miles
Step-by-step explanation:
3+1/2+2+1/2=6miles
HELP NOW ILL GIVE BRAINLIEST
Answer:
5x + 2y = - 26
Step-by-step explanation:
( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] ) , m
y - [tex]y_{1}[/tex] = m ( x - [tex]x_{1}[/tex] )
~~~~~~~~~~~~~~~~
( - 8 , 7 ) , m = - [tex]\frac{5}{2}[/tex]
y - 7 = - [tex]\frac{5}{2}[/tex] ( x - ( - 8 ) )
y + [tex]\frac{5}{2}[/tex] x = 7 - 20
5x + 2y = - 26
How many ways can 100 be written as the sum of distinct integers from the set {1, 2,..., 15}?
Answer:
48 ways
Step-by-step explanation:
Let me take a guess
S₁_₁₅ = (1+15)*7 + 8 = 120
There are 48 combinations of distinct digits from 1 to 15 to make 20
120-20=100
So every 20 has a corresponding 100
I wish I got it right, otherwise report it.
Joy has some pairs of shoes six pairs of them are sneakers what expression shows how many pairs of shoes joy has that are not sneakers
how do you divide 2.6 by 2.952
Answer:
how do you divide 2.6 by 2.952
Step-by-step explanation:
The blue Jays played 50 games. They won 3/5 of there games. How many games did they win?
Answer:
The number of games they won = 3/5 * 50=30games
Step-by-step explanation:
what is the slope and y intercept of −5x = 8−y
Answer:
im pretty sure its -5
Step-by-step explanation:
The slope-intercept form is y = m x + b
where m
is the slope and b
is the y-intercept.
y = m x + b
Using the slope-intercept form, the slope is
− 5 . m = − 5 i think im right but if this helpful your welcome uwu
Answer:
Slope is 5 and y-intercept is 8
Step-by-step explanation:
-5x = 8 - y Solve for y
-5x - 8 = -y
5x + 8 = y multiply by -1
So y = 5x + 8
Using y = mx + b "m" is the slope 5 "b" is the y-intercept
Another Khan acd question
A sample of bacteria is growing at an hourly rate of 15% according to the continuous exponential growth function. The sample began with 14 bacteria.
How many bacteria will be in the sample after 25 hours? Round your answer down to the nearest whole number.
Answer:
mabye 45
Step-by-step explanation:
the bacteria increases 2 per hour so it should be 45
sorry if I am wrong it is just the answer I calculated
What is the ratio of consonants to syllables?
PTERODACTYL
Answer:
Step-by-step explanation:
Pterodactyl has 8 consonants and 4 syllables. So the ratio is 8 to 4, or 2 to 1, if reduced.
Please mark as brainliest if this helped you, and let me know if you have any questions. :)
what is the value of 2(c+1) = 10
Answer:
c=4
Step-by-step explanation:
2c+2=10
2c=8
c=4
What sales tax, at a rate of 6 1/2%, much you pay on the purchase of a computer hard disk drive costing $258.75?
Answer:
275.57
Step-by-step explanation:
258.75 ×6.5=16.817
275.57 +26.82 =275.57
y=-3x^2+239x-2268
y=−3x
2
+239x−2268
Answer:
x=$39.83 (best price)
Step-by-step explanation:
Modern Electronics offers a one-year monthly installment plan for a big screen TV. The payment for the first month is
$62, and then it increases by 4% each month for the rest of the year. Which expression can be used to find the total
amount paid in the first 12 months?
O 62/ 1-0.0412
1 -0.04
1 -1.0412
O 62
1 -0.04
1 - 1.0412
62
1 - 1.04
1 - 1.040.04
62
0 (
1-12
Answer:
64.48 (I am 45% sure) The number are mixed and hard to understanding.
Step-by-step explanation:
The linear equation of the total amount paid in the first 12 months will be y = 64.48x - 2.48.
What is the linear system?A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.
Modern Electronics offers a one-year monthly installment plan for a big-screen TV.
The payment for the first month is $62, and then it increases by 4% each month for the rest of the year.
Then the payment after a month will be
Monthly payment = 1.04 × 62
Monthly payment = $64.48
Then the linear equation of the total amount paid in the first 12 months will be
y = 64.48(x - 1) + 62
Where y is the cost and x is the number of months.
The equation can be written as
y = 64.48x - 2.48
More about the linear system link is given below.
https://brainly.com/question/20379472
#SPJ2
Need help with the second part ASAP.
9514 1404 393
Answer:
1/x = (1+√5)/2 ≈ 1.618034
Step-by-step explanation:
Since you are only interested in the second part, we presume you have solved the quadratic equation to find ...
x = (√5 -1)/2 ≈ 0.618034
The second part asks for 1/x. The usual method for rationalizing the denominator will be useful for this. Multiply numerator and denominator by the conjugate of the denominator.
[tex]\dfrac{1}{x}=1\div\dfrac{\sqrt{5}-1}{2}=1\times\dfrac{2}{\sqrt{5}-1}\\\\=\dfrac{2(\sqrt{5}+1)}{(\sqrt{5}-1)(\sqrt{5}+1)}=\dfrac{2\sqrt{5}+2}{5-1}=\boxed{\dfrac{\sqrt{5}+1}{2}\approx1.618034}[/tex]
_____
Additional comment
You may notice that 1/x = x+1.
help
struggling here :)))
Answer:25
Step-by-step explanation:
PLEASE HELP!
Charlie ate ¾ cup dry food for breakfast and another ½ cup for dinner. If the food
has a caloric density of 360kcal/cup, how many kcal did Charlie eat in total? Please show work!
Answer: 450 kcal
Step-by-step explanation:
So you know the food is 360 kcal per 1 cup
by setting up a proportion, you can relate the number of kcal to cups.
[tex]\frac{360 kcal}{1 cup} = \frac{?kcal}{(3/4 +1/2)cup} \\\\[/tex]
we can simplify the fraction to this:
[tex]\frac{360 kcal}{1 cup} = \frac{?kcal}{(5/4)cup} \\\\[/tex]
by cross multiplying you can solve the proportion
(360) * (5/4) = (?) * (1)
simplifying gets this:
450 = ?
so he ate 450 kcal total
HELP ME OUT PLEASE I NEED A ANSWER ASAP!!!
What is the slope of line segment AB?
A) 2/3
B) 3/4
C) 4/3
D) -3/4
In a class 15 students like Maths. 20 students like English and 10 students like science. 5 students like all three subjects. If there are 50 students in the class, how many students like none of the three subjects?
Answer:
Everyone likes a subject so 0 students like none.
15+10+20+5=50