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inessss [21]
3 years ago
13

Find the sum. 2/5 + 1/2​

Mathematics
2 answers:
dybincka [34]3 years ago
5 0
2/5 + 1/2

4+5 / 10 • look for the LCD of 5 and 2
which is 10 then 5 goes 2
times into 10 the multiply by 2
= 4. Then 2 goes 5 times into
10 then multiply by 1 = 5.

Therefore the sum of 2/5 + 1/2 =9/10
Crazy boy [7]3 years ago
5 0

Answer:

9/10 NINE OVER 10

Step-by-step explanation:

To add two fractions they must be over a common denominator, which for this problem is  10. To put each fraction over a common denominator we must multiply each fraction by the appropriate form of  1. 2/5 + 1/2 ( 2/2 X 2/5 ) +  (5/5 X 1/2 ) --> 4/10 + 5/10

We can now add the numerators of the two fractions over the common denominator: 4/10 + 5/10 ---> 4+5/10 ---> 9/10.

Hope this helps! I know what does though, marking me brainliest.

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2x - 10 =28 what is x
Brut [27]

Answer:

x = 19

Step-by-step explanation:

2x - 10 = 28

2x = 38

x = 19

Best of Luck!

5 0
4 years ago
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3 0
3 years ago
An=an−1−4 a1=15 to explicit formula
USPshnik [31]

Answer:

a_n=3n-12

Step-by-step explanation:

We are given the recursive formula:

a_n=a_{n-1}-4, a_1=15

This is the recursive formula for an arithmetic sequence.

The explicit formula for an arithmetic sequence is given by:

a_n=a_1 + d({n-1} )

Where d=3 is the common difference.

We plug in this values to get:

a_n=15 + 3({n-1} )

We now expand and simplify to get:

a_n=15 + 3n-3

We simplify to obtain:

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8 0
3 years ago
PLEASEEEEEE SOMEONE HELP I WILL GIVE ALOT OF POINTS AND WHATVER ELSE PLEASEE
Triss [41]
Part A : formula for circumference = pi*D or 2piR
for circle A.... 8*pi=25.12
therefore pi=3.14
for circle B.... 3*pi=9.42
therefore pi=9.42/3
pi=3.14

part B : formula for Area =
pi \times  {r}^{2}
for circle A.... 50.24=pi*(8/2)sqr...(because diameter/2= radius)
pi=50.24/16
pi=3.14

for circle B... 7.065=pi*(3/2)sqr...
pi=7.065/2.25
pi=3.14

what do you observe?
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4 0
4 years ago
What is the measure of angle c?
Likurg_2 [28]
Answer: 120 degrees

Explanation: Flat surfaces are equal to 180 degrees. 180 minus 60 is 120.
3 0
3 years ago
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