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zhuklara [117]
3 years ago
12

Please help whats the answer !!?

Mathematics
1 answer:
Soloha48 [4]3 years ago
3 0

The correct answer is the one on the top right corner.

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What is the sum of the numbers in the series? 15 + 11 + 7 + . . . + (–129)
babymother [125]
Using Gauss's method
Total number of terms = [15-(-129)]/4+1=36+1=37
Add
S=15+11+7+....-125-129
S=-129-125-...+7+11+15
--------------------------------
2S=-114-114-114...(37 times)
=>
sum=S=(1/2)*(-114)*37=-2109


Using AP, T(n)=15+11+7+....-129
T(n)=19-4n  => T(1)=15, T(37)=-129
S(n)=(1/2)(37)(T(1)+T(37)=(1/2)37(15-129)=2109
3 0
3 years ago
If a student is 65.0 in tall, what is her height in m? (2.54 cm = 1 inch)
spayn [35]

Answer:

Height of the student=1.651m

Step-by-step explanation:

Given: Height of a student= 65.0 inch.

To find: Height of a student in meters.

Solution:

We know that 1 inch=2.54 cm, then

65.0 inch will be =2.54{\times}65.0

65.0 inch will be=165.2 cm

Also, we know that 1cm=\frac{1}{100} m, then

165.2 cm will be equal to=\frac{1}{100}{\times}165.1

165.2 cm will be equal to=1.651 meters

Therefore, the height of a student in meters will be 1.651 meters.

5 0
3 years ago
Y = 4 + x/3 is linear or nonlinear
Aneli [31]

Answer:

It is Linear because it runs in a straight line

Step-by-step explanation:

7 0
3 years ago
last year the hiking club had 19 members. this year there are 37 members in the club. estimate the percetnage change in the numb
Mama L [17]
About 190% because its almost two times the original number

I hope that answers your question
7 0
2 years ago
Find the value of A E B C and D please
Nikolay [14]
Looks like you've got 3 lines that are all parallel with one transversal diagonally running down the middle. 
Since all of the other lines are parallel to one another, there are only two different angle combinations to be made by the transversal and one of the other lines, one of which being the given 60º angle. 
The other one is found by subtracting that from 180 since a straight angle measures 180º. 
180 - 60 = 120 
The smaller ones are always 60º, and the larger ones are always 120º. 
That means that a = 60, b = 60, and d = 60 
It also means that c = 120 and e = 120. 
Hope this helps!
5 0
3 years ago
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