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Alla [95]
2 years ago
11

Solve the equation

Mathematics
1 answer:
Arturiano [62]2 years ago
3 0

Answer:

x + 5 = 2

x = 2 - 5

x= -3

I hope it's helps you

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Please help! Will mark brainliest
ser-zykov [4K]

Answer:

Step-by-step explanation:

t1 = a1

t2 = a1 + d

t3 = a1 + 2d

The sum is t1 + t2 + t3 = a1 + a1 + d + a1 + 2d = 3a1 + 3d

Second question

t1 = a1

t2 = a1 + d

t3 = a1 + 2d

t4 = a1 + 3d

...

tn = a1 + (n - 1)*d

Sum = (a1 + a1 + (n- 1)*d) * n / 2

Sum = (2a1 + nd - d) * n / 2

Sum = (2a1*n + n^2*d - nd) / 2

5 0
2 years ago
An Arithmetic series has 20 terms. The first term is -81. The sum of all the terms is -480. Use the arithmetic sum formula to fi
timama [110]

Answer:

The last term is 33.

Step-by-step explanation:

Sn = (n/2)(a1 + L)    where a1 = first term and L = the last.

So:

-480 = (20/2) ( -81 + L)

-480 = 10( L - 81)

L- 81 = -480 / 10 = -48

L = -48 + 81

L = 33.

4 0
3 years ago
How long would it take to have $1335.60 in interest if principal is $5300 and interest rate is 7%
Solnce55 [7]
(5300 + 1335.6)  = 5300(1 + 0.07)^n   where n is the number of years required

6635.6 = 5300(1.07)^n
(1.07)^n = 1.252
n log 1.07  = log 1.252

n =  log 1.252 / log 1.07 = 3.32 years Answer








5 0
3 years ago
The ratio of boys to girls in Mrs. Ronilo's math class is 3 to 2. What percent of the class is boys?
maksim [4K]
60% please make me as the most brainlyest
5 0
3 years ago
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In ΔABC, ∡A is a right angle, and m∡B = 45°. What is the length of BC? If the answer is not an integer, leave it in simplest rad
NikAS [45]
BC² = 11² + 11²

BC² = 121 + 121

BC² = 242

BC = √242

BC = 11√2

Answer: 11√2
8 0
3 years ago
Read 2 more answers
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