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makvit [3.9K]
3 years ago
12

Model the following multiplication expression: 3x 1 1/4

Mathematics
2 answers:
tresset_1 [31]3 years ago
8 0
8. 25 I'm pretty sure
dangina [55]3 years ago
4 0
<span>3x 1 1/4
3 x 5\4=15\4
answer=3.75</span>
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Please answer with clear instructions so that i can apply this to other questions.
kvv77 [185]

Answer:

10 terms

Step-by-step explanation:

equate the sum formula to 55 and solve for n

\frac{1}{2} n(n + 1) = 55 ( multiply both sides by 2 to clear the fraction )

n(n + 1) = 110 ← distribute parenthesis on left side

n² + n = 110 ( subtract 110 from both sides )

n² + n - 110 = 0 ← in standard form

Consider the factors of the constant term (- 110) which sum to give the coefficient of the n- term (+ 1)

the factors are + 11 and - 10 , since

11 × - 10 = - 110 and 11 - 10 = + 1 , then

(n + 11)(n - 10) = 0 ← in factored form

equate each factor to zero and solve for n

n + 11 = 0 ⇒ n = - 11

n - 10 = 0 ⇒ n = 10

However, n > 0 , then n = 10

number of terms which sum to 55 is 10

7 0
2 years ago
contradictions!!!! i dont get them help me with 5 of them pleaseee i will mark you brainlest answer and everything
vodomira [7]
Contradictions usually mean they go against established rules. Squaring a negative number is one example if it is in math. But just think of anything that goes against what is known.  
3 0
3 years ago
Help me please it easy.
gregori [183]

Answer: there is no picture attached or equation? what's the question?

Step-by-step explanation:

4 0
3 years ago
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I need help I will rate you brainliest
Tems11 [23]

Answer:

it would be subtraction

Step-by-step explanation:

Because if you are trying to get you would do 2-2 to get 0 and have x by itself

3 0
3 years ago
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Suppose that 6 out of 24 people leave a meeting early. what percent of the people leave early​
Alisiya [41]
25% of people leave early as 6 is 1/4 of 24. You can solve this by dividing 6 by 24 (I believe, maybe check with someone on that but that’s how i figured it out).
4 0
3 years ago
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