Answer:
x > 16
Step-by-step explanation:
3/4x > 12
3x > 48
x > 16
hope this helps
In an arithmetic sequence, the 30th term is 112, and the 72nd term is 280. What is the 58th term?
Answer: 224
Step-by-step explanation: Subtract the terms and term number to find the common difference, 168/42=4. 112-29×4=-4=first term. 57×4+-4=224!
20% of ___ is 10 pls help me ✌
Answer:
200
Step-by-step explanation:
i hope this is right if not sorry
Ecologists wanted to estimate the mean biomass (amount of vegetation) of a certain forested region. The ecologists divided the region into plots measuring 1 square meter each, and they selected a random sample of 9 plots. The mean biomass of the 9 plots was 4.3 kilograms per square meter (kg/m2) and the standard deviation was 1.5 kg/m2 . Assuming all conditions for inference are met, which of the following is a 95 percent confidence interval for the population mean biomass, in kg/m2?
A) 4.3±1.96 (underroot 1.5/3).
B) 4.3±1.96 (1.5/3).
C) 4.3 ± 2.306 (underroot 1.5/9).
D) 4.3±2.3064 (1.5/9).
E) 4.3+2.30/15 (1.5/3).
Answer:
[tex]4.3 \pm 2.306\frac{1.5}{\sqrt{9}}[/tex], option c
Step-by-step explanation:
We have the standard deviation for the sample, so we use the t-distribution to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 9 - 1 = 8
95% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 8 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975[/tex]. So we have T = 2.306
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 2.306\frac{1.5}{\sqrt{9}}[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
Confidence interval:
The confidence interval is the sample mean plus/minus the margin of error. So
[tex]4.3 \pm 2.306\frac{1.5}{\sqrt{9}}[/tex]
The correct answer is given by option c.
Marvin solved the equation 4(x+5)=88 fill in the blanks
Answer:
x=17
Step-by-step explanation:
4(x+5) = 88
4x + 20 = 88
4x = 88-20
4x = 68
x = 68/4
x = 17
Answer:
17
Step-by-step explanation:
4(x+5)=88
4x+20=88
4x=88-20
4x=68
4x÷4=68÷4
x=17
The width of a kitchen is 4.2 metres.
Kitchen cupboard widths are 60cm.
How many kitchen cupboard will fit in 4.2 metres?
Enter the number only
Given:
The width of a kitchen is 4.2 metres.
Kitchen cupboard widths are 60 cm.
To find:
The number of kitchen cupboard that will fit in 4.2 metres.
Solution:
Let x be the number of kitchen cupboard that will fit in 4.2 metres.
Width of 1 cupboard = 60 cm
Width of x cupboards = 60x cm
We know that, 1 m = 100 cm.
Width of a kitchen = 4.2 metres
= 4.2×100 cm
= 420 cm
Now, the width of the x cupboards is equal to width of the kitchen.
[tex]60x=420[/tex]
[tex]x=\dfrac{420}{60}[/tex]
[tex]x=7[/tex]
Therefore, the number of kitchen cupboard that will fit in 4.2 metres is 7.
Find the equation of the linear function represented by the table below in slope-
intercept form.
Answer:
y = 3x + 5
Step-by-step explanation:
slope:
11 - (-1) / 2 - (-2) = 12/4 = 3
slope intercept form is y = mx + b, so right now you have m = 3:
y = 3x + b
now, since you know x = -2 and y =-1 is a solution, you can plug those values in:
-1 = 3 * -2 + b
-1 = -6 + b
5 = b
This means the equation is y = 3x + 5
What is the value of x in the figure below?
help me pleeeeeeeeeeeeease
Answer:
1:9
Step-by-step explanation:
9/9 = 1 and 81/9 = 9
Thus, 9:81 ratio simplified is 1:9
Please help!!!!!!!!!!
Answer:
104 ft^2
Step-by-step explanation:
Before we start, one thing to notice is the 90 degrees symbol at the corners. This lets you know a rectangle has four 90 degrees angle, which will help in the next step.
First, separate the shape to become three rectangles.
After you've done that, start with the first recantgle on the left.
The edges are 8 and 5. To find the area, you must multiple 8 by 5.
8 * 5 =40
The area is 40 for the first rectangle.
Next, we do the second rectangle to the right of the first one.
oThe edges are 6 and 4. We know it is four because the full length on the rectangle on the left is 8 and below the 6 ft is the place that says 4 ft. The 6ft line cuts to rectangle in half so the other edge will be 4 ft. (Hope that made sense )
Now we find the area of the second rectangle by multiplying 6 and 4
6 *4 = 24
Now we conclude with the third rectangle. We know one edge which is 5 and the other edge will be 8 because, at the opposite end, it tells us the length is 8.
Now we multiply 8 and 5.
8 * 5 = 40.
Now, the three numbers we have found are 40, 24, and 40. Our final step is to add up these three numbers from the rectangles we made to find the area.
40 + 24 + 40 = 104
The area will be 104 ft^2
I hope this explanation helped and have a good day!
pentru triunghiurile congruente ijk si lmn sau scris cate trei congruente ale elementelor acestora scrie congruentele lipsa
i am just doing this so I can get more answers
Step-by-step explanation:
Janet plants 20 varieties of flowers in the spring . She reports that 90% of the flowers she have planted bloomed
How many varieties have bloomed
Pls answer ASAP
Answer:
18
Step-by-step explanation:
90% of 20 is 18
Answer:
18
Step-by-step explanation:
90%of 20 =18
so the answer is 18
how many 1/3 inch cubes does it take to fill a box with width 2 2/3 inches length 3 1/3 inches and height 2 1/3 inches
Answer:
560/9 or around 63 cubes
Step-by-step explanation:
2 2/3 -> 8/3
3 1/3 -> 10/3
2 1/3-> 7/3
7/3 x 8/3= 56/9
56/9 x 10/3 = 560/27
560/27 divided by 1/3
= 560/9
Find the measure of 41.
{
839
41
4 1 = [?]
Enter
<1=97°
Answer:
<1+83=180 co interior angle
<1=180-83=97°
Answer:
solution given:
<1+<83°=180°[co- interior angle]
<1=180°-<83°=97°
<1=97° is your answer
Find the perimeter of the figure. due today
Answer:
24 in
Step-by-step explanation:
5in + 4in + 9in + 5in + (4in - 3in) = 24in
I just need these 4, they should be super easy!! I really need help
Answer:
1. v = 72
2. b = 8
3. 0 or -2
4. C = -24
Step-by-step explanation:
Hope this helps.. Can I get brainiest
Write the equation of a line that
passes through the point (0, 3)
with a slope of -3.
Answer:
y= -3x + 3
Step-by-step explanation:
the point given tells you the y-int
given that y=mx + b, you can plug in the values
y= -3x + 3
help meh I keep doing bad :/
Answer:
5,009.206
Explanation:
How can I solve the following systems using Gaussian elimination method, w+2x-y=4, x-y=3 , w+2x-2y=7 2u+4v+w+7x=7?
Plz help quick I will give brainly points
Let X and Y be the following sets:
X = {}
Y = {2,3, 5, 7, 11, 13}
Which of the following is the set X Y?
Answer: the answer is B
Step-by-step explanation:
Somebody help me ??!!
*this answer i made was incorrect please avoid it*
Answer:
15
Step-by-step explanation:
Pythagoras theorem
a^2+b^2=c^2
12*12=144
9*9=81
144+81=225
sq root of 225 = 15
HELP ME PLEASE HERE IS THE IMAGE I NEED THE HELP PLEASE
Answer: 1:3
Step-by-step explanation:
18 Spanish and 6 French
ratio of French to Spanish is 6:18 reduced to1:3
which one ??????????????????????????
Answer:
That if I do not know friend, sorry
A triangle has an area of 37.5 inches the height of the triangle is 20 inches what is the length of the base of the triangle?
Answer:
base = 3.75 inches
Step-by-step explanation:
37.5 = 20b/2
37.5 = 10b
b = 3.75
What is the mean?
1 2 1 3 6 3 6 2
HELP PLS WUICK! GIVING OUT BRAINLIST
After a birthday only 1/4 cake ramains what fraction is equivalent 1/4
Answer:
2/8, 3/12, 4/24, 5/20, 6/24, 7/28, 8/32, 9/36, 10/40, etc.
Step-by-step explanation:
Find the area of the shape
Solve the system of equations.
8x + 16y = -42
- 2x + 3y = 7
A. (-4,1)
B. (0.5, -2.69)
C. (4.3, 0.5)
D. (-4.25, -0.5)
Over 4 days, Krista deposited $45 into
her bank account, transferred $30 to a
friend, deposited $59, and withdrew
$18. What was the mean change per day
to Krista's account during that week?
Answer:
50
Step-by-step explanation:
45 - 30 = 15
15 + 59 = 74
74 - 18 = 56
The mean change per day to Krista's account during the week is $ 14
What is Average?
The average value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values.
Given data ,
The total sum of money in Krista's account = $45 - $30 + $59 - $18
= $56
Total number of days = 4 days
Now ,
Mean change per day = Sum of money in Krista's account / Total number of days
Mean change per day = 56 / 4
= $ 14
Hence , The mean change per day to Krista's account during the week is $ 14
To learn more about average or mean click :
https://brainly.com/question/17160638
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