To find the total number of photographs, we use the fact that 30% were perfect, meaning 70% were not perfect. By setting up the equation 0.70x = 210, we can solve for x, finding that there were 300 photographs in total.
If 30% of John's photographs were perfect and 210 were not perfect, determining the total number of photographs involves understanding percentages and basic algebra. Here's the step-by-step breakdown of solving the problem:
Let's call the total number of photographs 'x'.Since 70% of the photographs are not perfect (as 30% are perfect), we know that 0.70x equals the number of not perfect photographs.We can set up the equation: 0.70x = 210.To find 'x', divide both sides of the equation by 0.70: x = 210 / 0.70.This gives us the total number of photographs, x = 300.Therefore, there were 300 photographs in total.
The total number of photographs is 300.
If 30% of John's photographs were perfect, it means that 70% were not perfect. Since 210 photographs were not perfect, we can set up an equation to find the total number of photographs. Let x represent the total number of photographs. We know that 70% of x equals 210:
[tex]\[ 0.70x = 210 \][/tex]
Solving this equation, we find that
[tex]\( x = \frac{210}{0.70} = 300 \)[/tex]
Therefore, there were 300 photographs in total. This calculation assumes that all photographs are either perfect or imperfect, with no other categories.
if Mary pitches a baseball with the initial height of 6 feet and a velocity of 73 feet per sec, how long will it take for the ball to hit the ground
PLZ somebody tell me ;c
Easy question about triangles that I forgot what they look like so I feel too lazy to look them up (13 POINTS)
a child is 2-1/2 feet tall. the child's mother is twice as tall as the child. how tall is the child's mother?
What is the length of leg y of the right triangle? A right triangle with hypotenuse 85 and legs 84 and y 1 9 13 26 Question 11(Multiple Choice Worth 1 points)
a^2 +b^2 = c^2
a^2 +84^2 = 85^2
a^2 + 7056 =7225
a^2 = 169
a= sqrt(169)
a=13
length of leg y = 13
What is number ll I'm in advanced math and this is the only one I don't know. I'm in the 7th grade and in 9th grade math please help me.
What is rhe name of the period that has the digits 751
The name of period that has 751 in the number
is hundreds.
Because Period is considered to a group of places of the
digits.
In this case, the given number is 751 and it is the group of hundred because 700 is the highest number it contains.
We can also write 751 as
751 = 700 + 50 + 1
It means,
7 hundreds + 5 tens + 1 onesEach level of a smartphone app adds more gems for you to match. On level one, there were 13 gems. On level twelve, there were 123 gems. When you complete all twelve levels, how many total gems will you have matched?
Answer:
816 is your answer
Step-by-step explanation:
The Shake Shack sells large and small shakes. A large shake costs $5, and a small shake costs $3. On Sunday, the Shake Shack had a total revenue of $479. Which equation can be used to represent x, the number of small shakes sold and y, the number of large shakes sold?
479x + 479y = 15
4x + 4y = 479
5x + 3y = 479
3x + 5y = 479
Answer:
3x + 5y = 479
Step-by-step explanation:
As the problem states it, the number of small shakes will be represented by "x" and the number of large shakes will be represented by "y", so we know that the number of each mutiplied by the cost, its equal to the total revenue which is $479, so we just put that into an equation:
3x + 5y=$479
And that´s the equation that can be used to represent that inequality.
The maximum height of a vehicle that can safely pass under a bridge is 12 feet 5 inches. A truck measures 162 inches in height. Which best explaims whether or not the truck can pass safely under the bridge?
Is the decimal form of 13/3 a rational number
What value correctly fills in the blank so that the expressions are equivalent?
18 + 45 = ___ ´ (2 + 5)
-----------------------
2
3
7
9
Answer:
the answer is 9
Step-by-step explanation:
i just did it
20 POINTS!!! WRONG ANSWERS WILL BE REPORTED!!
A line passes through (1, –5) and (–3, 7).
a. Write an equation for the line in point-slope form.
b. Rewrite the equation in slope-intercept form.
Answer:
you didnt give the answer its A
Step-by-step explanation:
cause u gay
George has 9 more dollars than Frank, who has 3 more than Richard. What is the least amount of money that must be exchanged so that they each have the same amount of money?
I know the answer is $7 but is there a quicker way to do it instead of guess and check?
If x = -6 and y = -9, find xy - 3x + 2y
What is the equation of this line of best fit in slope-intercept form?
y = −6x + 3/4
y = 6x + 3/4
y =-3/4 x + 6
y =3/4 x + 6
PLEASE HELP!!! Get brainliest answer if right @peredhel
A total of 822 tickets were sold for the school play. They were either adult tickets or student tickets. They were 72 more student tickets sold then adult tickets. How many adult tickets were sold?
1.
(05.01 LC)
The graph below shows the height an elevator travels, y, in x seconds:
What is the rate of change for the relationship represented in the graph? (1 point)
A. 1/15
B.1/14
C.14
D.15
The rate of change for the relationship represented in the graph is 15
What is rate of change?The rate of change of a linear graph is the slope of the graph
From the graph, we have the following ordered pairs
(x,y) = (0,0) and (2,30)
So, the rate of change (m) is then calculated as:
[tex]m =\frac{y_2 -y_1}{x_2 -x_1}[/tex]
This gives
[tex]m =\frac{30 - 0}{2 - 0}[/tex]
Evaluate the differences
[tex]m =\frac{30 }{2 }[/tex]
Evaluate the difference
[tex]m=15[/tex]
Hence, the rate of change is 15
Read more about rate of change at:
https://brainly.com/question/8728504
Alaska's glacier bay national park had 431,986 visitors one year the next year the park had22,351 more visitors than the year before how many people visited during the two years show your work and explain how you found your answer.
What is the answer to 8ab-2b+ab-b
what number is 10 times more than 8000
Matteo is adjusting a satellite because he finds it is not focusing the incoming radio waves perfectly. The shape of his satellite can be modeled by y^2=6x where x and y are modeled in inches. He realizes that the static is a result of the feed antenna shifting slightly off the focus point. What is the focus point of the satellite? (–1.5, 0) (0, –1.5) (0, 1.5) (1.5, 0)
Answer: (1.5, 0)
Step-by-step explanation:
Given : The shape of his satellite can be modeled by [tex]y^2=6x[/tex] where x and y are modeled in inches.
Now,the given equation [tex]y^2=6x[/tex] is a equation of parabola.
Here, coefficient of x is positive, hence the parabola opens rightwards.
On comparing this equation with standard equation [tex]x^2=4mx[/tex], we get
[tex]4m=6\\\Rightarrow\ m=\frac{6}{4}=1.5[/tex]
In standard equation, coordinates of focus=(m,0)
Thus for given equation coordinates of focus=(1.5,0)
Answer:
Answer: (1.5, 0)
Step-by-step explanation:
.736 rounded to the nearest hundredth
Solve the system by the elimination method
6x+2y=-16
-x-3y=-16
find the quotient -7 divided by 14/3
Explain how you know the valúes of the digits in the number 58
how do you solve the function 5x-4=-2(3x+2)
Suppose you find six articles related to the topic of your research paper. In how many ways can you choose four articles to read? 30 15 720 360
One hundred students are asked a survey question as they walk through the front gate at their middle school. Is this a representative sample of the schools population?
Which rate is equivalent to the unit rate of 15 miles per gallon?
thirty miles over three gallons
three gallons over thirty miles
four gallons over sixty miles
sixty miles over four gallons
Answer:
Fourth option is correct.
Step-by-step explanation:
Since we have given that
thirty miles over three gallons
Unit rate would be miles per gallon.
three gallons over thirty miles
Unit rate would be miles per gallon.
four gallons over sixty miles
Unit rate would be miles per gallon.
sixty miles over four gallons
Unit rate would be miles per gallon.
Hence, Fourth option is correct.