Answer:
the answer is 30%
Step-by-step explanation:
24/80 = 0.3 or 30%
3(5x – 10) < 30x solve for x
Answer:
x>-1.25
Step-by-step explanation:
3(5x-10)<30x
15x-20<30x
-20<15x
-20/15<x
-1.25<x
x>-1.25
Step-by-step explanation:
Step 1: Distribute
[tex]3(5x - 10) < 30x[/tex]
[tex](3 * 5x) + (3 * -10) < 30x[/tex]
[tex]15x - 30 < 30x[/tex]
Step 2: Subtract 15x from both sides
[tex]15x - 15x - 30 < 30x - 15x[/tex]
[tex]-30 < 15x[/tex]
Step 3: Divide both sides by 15
[tex]-30 / 15 < 15x / 15[/tex]
[tex]-2 < x[/tex]
Answer: [tex]x > -2[/tex]
A set of bicycle prices are normally distributed with a mean of 300 dollars and a standard deviation of 50 dollars.
A sports bicycle has a price of 380 dollars.
What proportion of bicycle prices are lower than the price of the sports bicycle?
You may round your answer to four decimal places.
Answer:
0.9452
Step-by-step explanation:
Answer for Khan academy
The proportion of bicycle prices that are lower than the price of the sports bicycle is approximately 94.52%.
What is Z -score?A Z-score is defined as the fractional representation of data point to the mean using standard deviations.
We can start by standardizing the sports bicycle price using the formula:
z = (x - μ) / σ
where x is the sports bicycle price, μ is the mean, and σ is the standard deviation.
Substituting the values, we get:
z = (380 - 300) / 50 = 1.6
Now, we can use a standard normal distribution table or calculator to find the proportion of values below 1.6.
From the z-table, we find that this proportion is approximately 0.9452.
Therefore, the proportion of bicycle prices that are lower than the price of the sports bicycle is approximately 94.52%.
Learn more about the z-score here:
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Beth participated in a free throw contest. She took 10 shots, and she made 6 of them.
Beth wants to know how to describe the number of baskets she made.
Answer:
Beth made 60% of her shots.
Step-by-step explanation:
Given:
Total shots take = 10
Total goal = 6
Find:
Best describer this number.
Computation:
Converting goal numbers into percentage:
⇒ Total goal percentage = [Total goal/Total shots take]100
⇒ Total goal percentage = [6/10]100
⇒ Total goal percentage = 60%
Beth made 60% of her shots.
Answer:
6:10 is the ratio
Step-by-step explanation:
as a fraction it would be 6/10
as a decimal it would be 0.60 or 0.6
and she made 60% of her shots
Correct answers only please!
To the nearest cent, how much interest will she earn in 2 years?
Use the formula B = p(1 + r)t, where B is the balance (final amount), p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.
Answer:
$915.92
Step-by-step explanation:
i = p(1 + r)^t
i = $800(1 +.07)^2
i = $800(1.07)^2
$915.92
Which triangle could be drown as it is described? DUE TONIGHT HELP PLZZZZZZ!!!!
Mrs.Garcia is making bread using a total of 400 grams of gluten free flour.The recipe calls for 70% of the flour to be almond flour. She needs to know how much almond flower to use.
Answer:
She needs 280 grams of almond flour.
Step-by-step explanation:
This question can be solved using a rule of three.
400 grams is 100% = 1. How much is 70% = 0.7?
400 grams - 1
x grams - 0.7
x = 400*0.7
x = 280
She needs 280 grams of almond flour.
Answer:
120g
Step-by-step explanation:
70% of flour in 400g is expressed as
= 70/100×400
=0.7×400
=280g
Therefore, the amount of almond flour to be used by Mrs Garcia in making the recipe is
=400g-280g
=120g
Thus, Mrs Garcia requires 120g of almond flour
20 POINTS FOR 2 QUESTION PLEASE HELP WILL GIVE BRAINLIESTT
Answer:
8.a 9.acb
Step-by-step explanation:
good luck
6th GRADE MATH:
Noah bought 2.5 kilograms of colored tile chips for a mosaic art project. What is the mass of the chips in grams?
Answer:
2500 grams
Step-by-step explanation:
to go from kilogram to grams, u should multiply the kilograms by 1000 to get the grams
b) Write 25 x 10° in standard form.
Answer:
2.5x10^1
Step-by-step explanation:
When the first number goes down, add one to the 10's power
Answer:
2.5x10∧1
Step-by-step explanation:
Sarah is buying plants and soil for her garden! The soil Sarah wants costs $3.50 per bag, and the plants she wants are $8 each. Sarah can buy at most 20 items, as this is all she can fit in her car, and she cannot spend more than $150. Let x represents the number of bags of soil and y represents the number of plants:
Answer:
x+y ≤20
3.50 x +8 y ≤150
Step-by-step explanation:
Hi, the rest of the question is:
How do you write a system of linear inequalities to model the situation?
So, for the first inequality:
The sum of the number of soil bags (x) and plants(y) bought must be less or equal to 20.
x+y ≤20
For the second inequality:
The product of the number of soil bags (x) and the price of each bag (3.50) ; plus the number of plants bought(y) and the price of each plant (8) must be less or equal to 150.
3.50 x +8 y ≤150
In conclusion, the system is:
x+y ≤20
3.50 x +8 y ≤150
another 1 will give crown to the correct answer
Answer:
4, know that in a slope-intercept form the coefficient of x is the slope.
Step-by-step explanation:
Answer:
Slope is 4
Step-by-step explanation:
evaluate each of the following 8!
show work please
Answer:
40320
Step-by-step explanation:
8! to --> 8*7*6*5*4*3*2*1
=40320
I need the answers to these question (with steps)
1. simplify -5^ -1
2. simplify -1/y^ -4
3. simplify 5^ 4 x 5^ 7
thanks!
Answer:
-5^ -1 = 1/(-5) = -1/5
-1/y^(-4) = -(1/(1/y^4)) = -y^4
5^4 x 5^7 = 5^(4 + 7) = 5^11
Hope this helps!
:)
Answer:
1. -1/5
2. -y⁴
3. 5¹¹
Step-by-step explanation:
1. simplify -5^ -1
1/(-5)
-1/5
2. simplify -1/y^ -4
-1 × y⁴
-y⁴
3. simplify 5^ 4 x 5^ 7
5^(4+7)
5¹¹
Need help ASAP !! Anyone get this question ?
Answer:
1:3
Step-by-step explanation:
Down arrows: 4 out of 12
4:12
1:3
Answer:
4:12, 4 to 12, or 4/12
Step-by-step explanation:
this is so simple, first see how many down arrows are there
down arrows: 4
then count the total arrows
total: 12
down arrows to total arrows
4:12
Which of the ordered pairs is
4x – 1= 3y + 5
ANSWER IS ONE THE SHEET
hope this help
Which scenario would provide the least biased results? Surveying people at a concert about their favorite bands surveying every 10th person who enters a mall about their favorite type of cookie surveying people at a sporting event about their favorite team surveying 6th grade students about the location of the 8th grade dance
Answer:
The 10th person who enters the mall about their fav cookie.
Step-by-step explanation:
in a concert they went there bcs they like that band. In the sport one they like that sport team so they watch it. The sisth grade one is just wrong bcs it just is.
A person jogs 1/2 mile in 1\8 hour. What is the persons speed per hour
Answer:
4 miles per hour is the speed
Answer: 4 miles per hour
Step-by-step explanation:
distance=1/2miles=0.5miles
time=1/8hours=0.125hours
Speed=distance ➗ time
Speed =0.5 ➗ 0.125
Speed =4 miles per hour
what's the value of a cube if the length is 44 the height is 45 in The width is 43?
Answer:
Step-by-step explanation:
Value of a cube = length*height*width
Value of a cube = 44*45*43
= 85140
I hope it'll help you much
Thank you for asking
what is the sum of the fractions below?
2/3 +3/4
Answer:
17/12 or 1 5/12
Step-by-step explanation:
How is writing expressions with variables and numbers similar to writing expressions using words?
Whoever answers this first will get brainliest.
The expressions in which the numbers, or variables, or both, are connected by operational signs (+, - etc.) are called algebraic expressions. For example 5, 4x, a+b, x−y.
Answer:
Sometimes in math we describe an expression with a phrase. For example, the phrase
"2222 more than 5555"
can be written as the expression
2+52 + 52+52, plus, 5.
Similarly, when we describe an expression in words that includes a variable, we're describing an algebraic expression (an expression with a variable).
For example,
"3333 more than xxxx"
can be written as the algebraic expression
x+3x+ 3x+3x, plus, 3.
But why? Why use math if we can describe things in words? One of the many reasons is that math is more precise and easier to work with than words are. This is a question you should keep thinking about as we dig deeper into algebra.
Different words for addition, subtraction, multiplication, and division
Here is a table that summarizes common words for each operation:
Operation Words Example algebraic expression
Addition plus, sum, more than, increased by x+3x + 3x+3x, plus, 3
Subtraction subtracted, minus, difference, less than, decreased by p−6p - 6p−6p, minus, 6
Multiplication times, product 8k8k8k8, k
Division divided, quotient a÷9a \div 9a÷9a, divided by, 9
For example, the word "product" tells us to use multiplication. So, the phrase
"the product of 8888 and kkkk
Let's take a look at a trickier example
Write an expression for "mmmm decreased by 7777".
Notice that the phrase "decreased by" tells us to use subtraction.
So the expression is m−7m - 7m−7m, minus, 7.
If x = 5, find the value of
a) x2
b) (x + 3)2
Answer: a) = 10
b) = 16
Step-by-step explanation:
a) as x = 5 so putting the value of x in given equation
5 multiplied by 2 is equal to 10
b) Putting value of x in given equation
= (5 + 3) 2
According to BODMAS solve the brackets first
= 8 x 2
= 16
2) Which of the following is the quadratic
equation in standard form?
-b+ Vb2 - 4ac
A) X=
B) y=alr - h)? +k
2a
C) y=ax+bx+c D) y = ax + bx+c
Answer:
a
Step-by-step explanation:
its a because i looked it up and it said a
Determine the intercepts of the line.
2x+5y=-6
Answer:
Step-by-step explanation:
hello : 2x+5y= - 6
1) the x-intercept when y=0 : 2x+5(0)= -6
means : 2x=-6 so : x=-6/2 = -3
2) the y-intercept when x=0 : 2(0)+5y= -6
means : 5y=-6 so : x=-6/5
What’s the answer to this
Answer:
A point on either side of the line
Step-by-step explanation:
To determine which side to shade, you look at a point on each side of the line. One will make the inequality true and one will not. Shade on the side that will make the inequality true
(2/3) ⋅ (5/9)
i just need the answer.
Answer:
10/27
Step-by-step explanation:
Can someone answer this question please please answer it correctly I’d it’s correct I will mark you brainliest please help me
The formula for the area of a circle is A = pi x (radius^2).
We need the radius of the circle in order to use the formula. The radius is equal to 1/2 of the diameter of the circle. The radius goes from the center to one side of the circle, whereas the diameter touches two sides of the circle and goes through the center.
radius = 6 / 2 = 3 units
Remember that a semi-circle is equal to 1/2 of a full circle. So we need to find the area of the whole circle and divide it by 2.
A = pi x 3^2
A = 9pi
A = 4.5pi = 14.13 units^2
Hope this helps! :)
Look at the attached picture
Hope it will be helpful to you..
Good luck for your test...(◕ᴗ◕✿)
Find the area of a circle with (a) a radius of 9.2 centimeters and (b) a diameter of 50.5 inches.
Round your answers to the nearest hundredth.
Answer:
Circle A: 265.9 cm²
Circle B: 2002.96 inches²
Step-by-step explanation:
Hi there!
Circle A
[tex]A=\pi r^2[/tex] where r is the radius of the circle
Plug in the radius 9.2 cm
[tex]A=\pi (9.2)^2\\A=84.64\pi \\A=265.90[/tex]
Therefore, the area of the circle is 265.9 cm² when rounded to the nearest hundredth.
Circle B
[tex]A=\pi (\frac{d}{2}) ^2[/tex] where d is the diameter of the circle (because radius=diameter/2)
Plug in the diameter 50.5 inches
[tex]A=\pi (\frac{50.5}{2}) ^2\\A=\pi (25.25) ^2\\A=637.5625\pi \\A=2002.96[/tex]
Therefore, the area of the circle is 2002.96 inches² when rounded to the nearest hundredth.
I hope this helps!
Complete the point-slope equation of the line through (-1,6) and (1,5)
Answer:
y − y1 = m(x − x1)
m = (y2-y1) / (x2-x1) = (5 - 6) / (1 - (-1)) = -1 /2
y - 6 = -1/2 (x - (-1))
y - 6 = -1/2 (x + 1)
y - 6 = -1/2x - 1/2
Step-by-step explanation:
What is the average rate of change of the function over the interval x = 0 to x = 6?
f(x)=2x−1/3x+5 <--- This is a fraction
Enter your answer, as a fraction, in the box.
Answer:
15 2/3, or 47/3
Step-by-step explanation:
I'm going to assume, correctly or not, that you actually meant f(x) = 2x^2 - (1/3)x + 5. Double check on this right now, please.
If I'm right, then evaluate f(x) at x = 0 and x = 8:
f(0) = 5
and
f(8) = 2(8)^2 - (1/3)(8) + 5 = 128 - 8/3 + 5 = 133 - (2 2/3), or: 130 1/3
Then the average rate of change of f(x) = 2x^2 - (1/3)x + 5 over the interval [0,8] is:
130 1/3 - 5 125 1/3
a. r. c. = ------------------- = ---------------- = 15 2/3, or 47/3
8 - 0 8
The average rate of change of the function [tex]f(x)=2x-\frac{1}{3} x+5[/tex] over the interval [tex]x = 0[/tex] to [tex]x = 6[/tex] will be [tex]\frac{5}{12}[/tex] .
What is average rate of change of the function ?Average rate of change of the function is a rate of change of the function, on an average, over the given interval. i.e. values of [tex]x[/tex] and [tex]y[/tex] .
Using slope formula we find Average rate of change of the function.
i.e. [tex]f(x)=\frac{f(x_{2} )-f(x_{1} )}{x_{2}-x_{1}}[/tex]
We have,
[tex]f(x)=2x-\frac{1}{3} x+5[/tex]
[tex]x_{1} = 0[/tex] to [tex]x_{2}= 6[/tex]
So,
First find [tex]f(x_{1})[/tex],
[tex]f(x_{1})=2x-\frac{1}{3} x+5[/tex]
[tex]f(0)=2*0-\frac{1}{3} *0+5[/tex]
[tex]f(x_{1})=5[/tex]
Now, find [tex]f(x_{2})[/tex],
[tex]f(x_{1})=2x-\frac{1}{3} x+5[/tex]
[tex]f(2)=2x*2-\frac{1}{3} *2+5[/tex]
[tex]f(2)=4-\frac{2}{3}+5=9-\frac{3}{2}[/tex]
[tex]f(x_{2})=\frac{15}{2}[/tex]
Now, putting values of [tex]f(x_{1})[/tex] and [tex]f(x_{2})[/tex] in given formula of [tex]f(x)[/tex],
i.e.
[tex]f(x)=\frac{f(x_{2} )-f(x_{1} )}{x_{2}-x_{1}}[/tex]
[tex]f(x)=\frac{\frac{15}{2}-5 }{6-0}[/tex]
[tex]f(x)=\frac{\frac{15-10}{2} }{6}[/tex]
[tex]f(x)=\frac{5} {12}[/tex]
So, the average rate of change of the function is [tex]\frac{5}{12}[/tex], which is find out using the slope formula.
Hence, we can say that the average rate of change of the function [tex]f(x)=2x-\frac{1}{3} x+5[/tex] over the interval [tex]x = 0[/tex] to [tex]x = 6[/tex] will be [tex]\frac{5}{12}[/tex] .
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please help quickly !
Answer:2490-2312=w; w=178 so 178 pounds
Step-by-step explanation:
Answer:
hey!
Your answer is 178 pounds!!
Step-by-step explanation:
by doing 2490lb-2312lb gives us the value of w
soo w=178 pounds!!
HOPE THIS HELPS!!
