Answer:
समांतर श्रेणी का प्रथम पद a = 2
[tex] t_{13}= 26[/tex]
Step-by-step explanation:
माना समांतर श्रेणी का प्रथम पद a और सामन्य अन्तर d है.
इसलिए..
[tex] S_6 = 42....(given) [/tex]
[tex]\therefore \frac{6}{2}\{2a + (6-1)d\}= 42 [/tex]
[tex]\therefore 3\{2a + 5d\}= 42 [/tex]
[tex]\therefore \{2a + 5d\}= \frac{42}{3} [/tex]
[tex]\therefore 2a + 5d=14...... (1)[/tex]
[tex] t_{10} : t_{30}= 1 : 3.....(given) [/tex]
[tex] \therefore \frac{t_{10}}{t_{30}} = \frac{1}{3} [/tex]
[tex] \therefore \frac{a +9d}{a+29d} = \frac{1}{3} [/tex]
[tex] 3(a + 9d) = a + 29d[/tex]
[tex] 3a + 27d = a + 29d[/tex]
[tex] 3a - a = 29d - 27d [/tex]
[tex] 2a= 2d [/tex]
[tex] a= d...... (2)[/tex]
समीकरण (1) और (2) से:
[tex]\therefore 2a + 5a=14[/tex]
[tex]\therefore 7a=14[/tex]
[tex]\therefore a=\frac{14}{7}[/tex]
[tex]\therefore a=2[/tex]
समांतर श्रेणी का प्रथम पद a = 2
a = d = 2... (समीकरण 2 से)
[tex] t_{13}= 2 + (13-1)2[/tex]
[tex] t_{13}= 2 + 12\times 2[/tex]
[tex] t_{13}= 2 + 24[/tex]
[tex] t_{13}= 26[/tex]
What is 30 % of 69.95
Answer:
20.985
Step-by-step explanation:
How do I calculate 30 percent off?
Take the pre-sale price.
Divide the original price by 100 and multiply it by 30.
Take this new number away from the original one.
The new number is your discounted value.
Which numbers belong to the solution set of the inequality? x+6= 42
Answer:
36
Step-by-step explanation:
Answer:
x=36 is your answer
Step-by-step explanation:
Simplifying
x + 6 = 42
Reorder the terms:
6 + x = 42
Solving
6 + x = 42
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-6' to each side of the equation.
6 + -6 + x = 42 + -6
Combine like terms: 6 + -6 = 0
0 + x = 42 + -6
x = 42 + -6
Combine like terms: 42 + -6 = 36
x = 36
Simplifying
x = 36
NEED HELP MY GRADE DEPENDS ON ITT!!!!!!!! I will mark brainliest answer.
find the value of f and g in the figure below.
Answer:
DONT PRESS THAT LINK
Step-by-step explanation:
The answer is 7/5
Please help:)
Answer:
AB = 1.4 or 7/5
Step-by-step explanation:
(Excuse my rambling but I wanted to be sure of myself)
AD = 2(5/2) = 5
AD is a diameter.
any triangle in a circle with the hypotenuse as the diameter is a right triangle.
Draw a line from point A to point C.
ΔACD is a right triangle.
Solve for ∠CAD:
sin CAD = 3/5 = 0.6000
∠CAD = 36.87°
arc CD = 2 x 36.87° = 73.74°
arc BC = arc CD = 73.74°
arc DB = 147.48°
∠BAD = 1/2 (147.48°) = 73.74°
draw a line from point D to point B
ΔBAD is a right triangle.
cos 73.74° = AB/5
AB = 1.4
PLEASE I NEED HELP CLICK ON THIS IMAGE
Answer:
There is no mode (B)
Step-by-step explanation:
g Suppose a kind of disease exists within 1% of the population and a certain test can help diagnose it. If someone has the disease, the test will give a positive result with a 95% probability. On the other hand, if someone does not have the disease, the test result will give a negative result 97% of the time. If David did the test once, what is the probability that the test result is positive
Answer:
0.0392 = 3.92% probability that the test result is positive.
Step-by-step explanation:
Probability of a positive test:
95% of 1%(person has the disease)
100 - 97 = 3% of 100 - 1 = 99%(person does not have the disease).
What is the probability that the test result is positive?
[tex]p = 0.95*0.01 + 0.03*0.99 = 0.0392[/tex]
0.0392 = 3.92% probability that the test result is positive.
yes or no question Ross has a fourth of the amount needed to buy a new computer. The computer costs $213 and the additional software costs $55. Does the expression (213 + 55) ÷ 4 show how you could calculate the amount of money Ross has? Explain.
Answer:
yes
of you plus 213+55=268
then divide it 268÷4
there you will get the final answer
Answer: answer is (B. Yes. Dividing the total cost by 4 is the same as multiplying by 1/4
Step-by-step explanation:
because when there is a fraction you flip it upside down and multiply and you get a similar
hope that helped please can you mark me as brainless pls tysm
Find the mean, median, and
mode of this data set:
2, 3, 4, 5, 5, 6, 8
Answer:
Mean: 4.71
Mode: 5
Median: 5
Step-by-step explanation:
5 2/6 - 2 3/6 in simplest form
Answer:
I believe 25/ 6 is the answer
Step-by-step explanation:
please answer !! will give brainliest
Answer:
7.10 I think its 7.10
HELP PLZ, 100 points!!!
hope it helps you ❣️
Answer:
10.25%
Step-by-step explanation:
Let the original number be represented with x.
Increase by 5% = 5% of x = 5/100 x X = 0.05x
So, the next number = x + 0.05x = 1.05x
Increase again by 5% = 5% of 1.05x = 5/100
x1.05x = 0.05 x 1.05x = 0.0525
So, the current number = 1.05x + 0.0525x =1.1025x
[tex] \frac{1.1025x - x}{x} = 0.1025 \times 100 = 10.25\%[/tex]
Use the figure to find the Volume.
Answer:
12π un^3
Step-by-step explanation:
Use the fomula: V= πr2 h
The radius is 2 and the height is 3.
I really don't know how to explain this but I can try, with a self- explanatory steps including the formula .
The work is in the screen shot goodluck.
Hope this helped!
Stay Safe!
change 5 feet 10 inches to centimetres
Answer:
177.8
Step-by-step explanation:
There are 30.48 centimeters per foot so multiply 30.48 by 5. And there is 2.54 centimeters in a inch so multiply 2.54 by 10. And then add the totals together to get 177.8
Find the measure of an angle whose supplement measures two times its measure
Answer:
first angle = 60
second angle = 120
Step-by-step explanation:
Let the first angle x
Let the second angle = 2x
x + 2x = 180 Supplementary angles = 180 degrees
3x = 180 Divide by 3
3x/3 = 180/3
x = 60
2x = 120
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An ice cream stand uses the expression 2 + 0.5% to determine the cost in dollars) of an ice cream cone
that has scoops of ice cream
How much does an ice cream cone with 5 scoops cost?
Complete question :
An ice cream stand uses the expression 2 + 0.5x2 to determine the cost (in dollars) of an ice cream cone that has x scoops of ice cream. How much does an ice cream cone with 5 scoops cost?
Answer:
$14.5
Step-by-step explanation:
Give the expression for the cost of ice cream cone with x scoops of ice cream :
Cost = 2 + 0.5x²
Cost of ice cream cone with 5 scoops of ice cream.
x = 5
Cost = 2 + 0.5(5²)
Cost = 2 + 0.5(25)
Cost = 2 + 12.5
Cost = 14.5
Hence, the cost of ice cream is $14.5
A bus left Lagos on Monday at 6.30a.m. and arrived Kaduna on Tuesday at 3.00p.m. How long did the journey take?
Answer:
8 hours and 30 minutes
Step-by-step explanation:
well 6:30am monday to 6:30am tuesday would be 24 hours
plus 9 hours until 3:30pm
then subtract 30 minutes to have 3:00
so 8 1/2 hours
Help!!! Please!!! I’ll mark you brainliest first person to answer!!! :)
What classification of quadrilateral is show? Explain
(a)write down the first ten square numbers.
(b)which two square numbers give a sum of 80?
(C)which two square number give a different of 11?
The tree diagram represents an
experiment consisting of two trials.
.3
.4
B
Answer:
.32
Step-by-step explanation:
.4x.8=.32
A sporting goods store is discounting all
sports balls 55%. Which value is equivalent to this
percent?
A. 15/25
B. 11/20
C. 5/10
D. 5/55
Can y’all help me on a question 15?!
pls help me i will give brainliest
Topic: Solving Word Problems Involving Linear Equations in One Variable
please show process.....
To do a job alone, it would take Beane 3 hours, Elle 4 hours and Rye 6 hours. How long would it take them to finish the job if they work together?
Step-by-step explanation:
13 hours
6 + 4 + 3 = 13
correct if wrong
Can Somebody Help Me Please?
Answer:
28 (length' unit)²
Step-by-step explanation:
the area of all A rectangle is 4*8 =32The area of the missing portion of the rectangle is equal to the area of the triangle ½*(2)*(4)=4the area of this shape equal tothe area of all A rectangle - The area of the missing portion of the rectangle = 32 - 4 = 28 (length' unit)²
find the area of the figure use 3.14 for pie
PLEASE HELP ME, THIS MEANS EVERYTHING TO ME ITS APART OF MY FINALS.❗
The ages of students who play racquetball at a school are shown in the histogram below.
How many students play racquetball at the school?
A.
60
B.
51
C.
54
D.
57
Answer:
Uhhhh... 54?
Step-by-step explanation:
Just add them together.
Here is a cuboid,
80 cm
30 cm
30 cm
Work out the total surface area of this cuboid.
(4)
Length = 80
Breadth = 30
Height = 30
Total surface area of a cuboid is=
2 ( lb + bh + hl )
Putting the values in the formula,
We get,
= 2 [ (80 x 30) + (30 x 30) + (30 x 80)]
= 2 (2400 + 900 + 2400)
= 8100 cm²
THANK YOU!!
∝ Sidhdi
As part of a school project, Tim and Jesse decide to build a birdhouse. Tim plans to house bluebirds in his birdhouse and Jesse hopes to attract wrens. Tim decides to make the floor of his birdhouse a square that measures
inches on all sides. The piece of lumber that he uses for the floor is
inches wide. How much will he need to cut off of the width of the board to make the floor?
A .3 1/4
B. 2 1/4
C.3 1/2
D. 2 3/4
Answer:
The answer is 2 3/4
Step-by-step explanation:
i need some to report my last 4 questions
Answer:
Will do!
I get the scam links too
Determine the measures of the following; (SOMEONE PLS) :v
arc AC=27°
arc BD=33°
arc CB=120°
hope it helps you ❣❣Mark me as brainliest