Answer:
Lucy had 40 books last year.
Step-by-step explanation:
assuming 100% is the percent;
100% + 70%
100 : x
170 : 68
cross multiply = 170x = 100 x 68
-------- ————-
170 170
cancel 170/170
therefore x = 100 x 68 divided by 170
result is 40
The number of books that Lucy has last year will be 40 books.
What is the percentage?The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.
The percentage is given as,
Percentage (P) = [Final value - Initial value] / Initial value x 100
Lucy has 68 books. This number of books is 70% more than the number of books she had last year.
Let 'n' be the number of books. Then the equation is given as,
1.7 n = 68
n = 68 / 1.70
n = 40
The number of books that Lucy has last year will be 40 books.
More about the percentage link is given below.
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Question 1 of 10
Which of these expressions entered into a graphing calculator will return the
probability that 450 or fewer heads come up when flipping a coin 500 times?
A. binomcdf(450, 0.5, 500)
B. binomcdf(500, 0.5, 450)
C. binomcdf(500, 450, 0.5)
D. binomcdf(450, 500, 0.5)
The expression for the situation is binomcdf(500, 0.5, 450).
The correct option is B.
What is a cumulative distribution function?The probability distribution of random variables is described using the cumulative distribution function. The probability for a discrete, continuous, or mixed variable may be described using it. The cumulative probability for a random variable is calculated by adding the probability density function.
Given:
A coin is flipped 500 times.
The probability when the coin is flipped once,
= 1/2
= 0.5
we want P (X ≤ 450), and this will use a binomial cumulative distributive function,
the parameters of a binomial cumulative distributive function are,
binomcdf (total trials, probability, up to some number)
That means,
binomcdf(500, 0.5, 450)
Therefore, binomcdf(500, 0.5, 450) is the required expression.
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Kevin has five less than twice the number of baseball caps Steph has. If Kevin has 13 baseball caps, how many baseball caps does Steph have?
Answer:
21
Step-by-step explanation:
13x2=26-5=21 so thats how I got the answer
What are the zeros of this function? HELP
Answer:
answer is B
Step-by-step explanation:
If the coordinates of point E are (-4, y), what is the value
of y?
O -8
O -4
O0
O8
The value of y is -8
What is slope of the line?"The slope of tee line passing through points [tex](x_1,y_1),(x_2,y_2)[/tex] is [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]"
What is y-intercept?"The point at which the graph intersects the Y-axis."
What is slope intercept form of the line?"y = mx + c, where m is the slope of the line and c is the Y-intercept."
For given question,
We have been given the graph of a line.
From the graph, we can observe that the line is passing through the points (4, 4) and (-6, 0)
Using slope formula the slope of the line would be,
[tex]\Rightarrow m=\frac{4-(-6)}{4-0}\\\\\Rightarrow m=\frac{10}{4}\\\\\Rightarrow m=\frac{5}{2}[/tex]
Also, the line intersects y-axis at y = 2
This means the y-intercept is c = 2
Using the slope-intercept form of the line the equation of the line would be,
[tex]y=mx+c\\\\y=\frac{5}{2}x+2[/tex]
Point E(-4, y) lies on the given line.
So, this point satisfies the equation of the line.
[tex]\Rightarrow y=\frac{5}{2}(-4)+2\\\\ \Rightarrow y=-10+2\\\\\Rightarrow y=-8[/tex]
Therefore, the value of y is -8
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PLEASE HURRY
In a local city, the temperature at noon is Negative 3 degrees Celsius. The temperature is expected to decrease by 2.5 degrees Celsius each hour until the temperature reaches Negative 18 degrees Celsius. How many hours will it take for the temperature to reach Negative 18 degrees Celsius? 6 hours 7 hours 7.2 hours 8.4 hours
Answer:
6 hours
Step-by-step explanation:
-3-2.5-2.5-2.5-2.5-2.5-2.5=18
srry if I took too long
Answer:
6 HOURS
Step-by-step explanation:
The correct answer would be 6 hours or A!
Hope this helps! Have a great day! :))
the shapes below are mathematically simillar
Answer:
6
Step-by-step explanation:
What is the value of x if x^1/2=64^1/3
Answer:
x=16
Step-by-step explanation:
[tex]x^{\frac{1}{2} }=64^{\frac{1}{3 } }=(4^3)^{\frac{1}{3} }=4^{3 \times \frac{1}{3} }=4 \\squaring\\x=4^2=16[/tex]
need this quick yal. name the angle in 4 different ways
Answer: <def, <fed, <e, <2
Step-by-step explanation:
Not sure about angle 2 but I’m sure of the rest
Hope it helps
i need the answer pls!!!
How many of you guys are wearing "Into The Night" by Bath & Body Works right now?
Answer:
I am *oop*
Step-by-step explanation:
Could you answer this below plz?
Answer:
the first one
Step-by-step explanation:
i think
Answer this please, will give 100 points.
Answer:
y=x doesent that mean 2=3 so what you do is the line that goes up thats y and the one that goes sideways thats x so at the to go to 2 then at the side go to 3
Answer:
Step-by-step explanation:
y=x doesent that mean 2=3
In Mobius math
24/4x(2+7)
Answer:
x2=24−4x
Step-by-step explanation:
Answer:
54
Step-by-step explanation:
24÷4 = 6
2+7 = 9 then multiply both together then it gives 54
(11y + 19) °
8x °
96 °
Answer:
lol 96
Step-by-step explanation:
Lin's father is paying for a $40 meal. He has a 15%-off coupon for the
meal. After the discount, what is the subtotal of the meal Explain or show your reasoning. *
5x10^5+2x10^4+8x10^2
Answer:
52800
Step-by-step explanation:
Answer:
520800
Step-by-step explanation:
ive done this on.
help me plzzzzzz PLZZZZZZZZ
Answer:
The answer would be B- 6s+48=258
Step-by-step explanation:
This is because she earns 6 points each time she goes so it would be 6*s, and she already has 48 points so thats where the +48 comes from
:)
Answer:
6s + 48 = 258
Step-by-step explanation:
6 points = every time shoppings = number of times Anita will have to shop6s = remaining points needed48 points = points earned so far258 = total needed pointsPut them together: 6s + 48 = 258I hope this helps!
you flip a coin twice what is the probability of getting tails then getting heads
HELP ASAP
Answer: The odds of getting tails twice in a row are 1/2 * 1/2 = 1/4. So 25% of the time you'll get heads twice in a row. But, if you've already flipped a coin 99 times, and gotten heads each time, then the odds of your next flip being heads is still just 50:50.
Step-by-step explanation:
a^5b^3/a^3 = b^11
Help
Answer:
what are you trying to solve?
Plsssss helpppp meeeee!!!
80 + ? + -30 = 0 whats in the middle
Answer: The answer is -50
because 80 + -50 = 30 and 30 + -30= 0 .
You have five times as many quarters as nickels and the total of money is
$9.10. How many quarters and nickels do you have?
2) What is the length of BD and BC in the diagram below?
D(14.14)
C(11.10)
B (5.2)
please help me
Answer:
BC is 10 unit
BD is 15 units
Step-by-step explanation:
Here, given the end points of the line segments, we want to calculate BD and DC
Mathematically, the distance between two points can be calculated using the formula;
D = √(x2-x1)^2 + (y2-y1)^2
For BD, we have the following
D = √(14-5)^2 + (14-2)^2
D = √(9)^2 + 12^2
D = √81 + 144
D = √(225)
Distance BD is 15 units
For BC, we have the following
D = √(11-5)^2 + (10-2)^2
D = √(6)^2 + 8^2
D = √100
D = 10
i dont get this at all
plz i need this rn
rita iss hiking a trail thats is one tenth a mile long so far she has hiked along one tenth of the trail how far has rita hiked
Answer:
well i feel like she walked the whole thing
because one tenth is 0.1 miles and she walked that distance
Step-by-step explanation:
Isaiah bought a total of 22 pieces of candy. The tootsie rolls cost 3 cents each and
the jolly ranchers cost 5 cents each. If Isaiah spent a total of 90 cents, how many
JOLLY RANCHERS were purchased?
A) 11
B)8
C) 10
O 12
07
complete the solution of the equation. Find the value of y when x equals 9. 3x + 4y = 43 Enter the correct answer.
what two numbers add up to be 116.5
Answer:
58.25
Step-by-step explanation:
116.5 / 2
= 58.25
Hope this helps!!
58.25+58.25
Those are the two numbers that add up to that number (116.5)
Btw there are also MULTIPLE numbers that add up to 116.5, I'm just putting the one that makes the most sense.
(｡ŏ﹏ŏ)
Miri
Five less than twice the value of a number is equal to three times the quantity of four more than one-half the number. What is the number?
Answer:
2x - 5 = (1/2)
4x - 10 [multiply by 2]
x - 10 = -13 [subtract 3x from both sides]
x = -3 [add 10 to both sides]
Step-by-step explanation:
The required number would be 34 which is determined by the phrase "five less than twice the value of a number is equal to three times the quantity of four more than one-half the number"
What is algebra?Algebra is the analysis of mathematical representations, while logic is the manipulation of those symbols.
When broken down, these sorts of statements are not intimidating. First, consider "five less than twice the value of a number."
"Twice the value of a number" is simply 2x.
"Five less" is simply -5, so for the first part we have (2x-5)
Examine the second section next. "Three times four times more than one half the number."
"Three times the quantity" simply indicates "three times something."
4 + "one half the number" or 4 + (1/2)x is "the quantity of four more than one half the number."
So the second part is simply 3(4+x/2).
Finally, we complete the equation, (2x-5) = 3(4+x/2) and solve for x.
2x-5 = 12 + (3/2)x
2x-(3/2)x = 17
x/2 = 17
x = 34
Therefore, the required number would be 34.
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a frame for mrs. nunez's class picture has an area of 93.5 square inches. the length of the frame measures 8 1/2 inches. what must be the width of the frame?
Answer:
Step-by-step explanation:
length times width = area
so you have 8.5w=93.5
divide 8.5 on both sides to get your answer
w= 11
so your width must be 11 inches