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3 years ago

1. Combine the expressions(a) 7x+3+6x +11

Mathematics

1 answer:

navik [9.2K]3 years ago

6 0

13x+14. Combine like terms (7x+6x=13x) (3+11=14)

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Tessa had $90 in her checking account. She paid her cable/internet bill for $60. She deposited $50 from her part-time job before

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90-60+50-65=15

$15 in her account

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3 years ago

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A curious patterns occurs in a group of people who all shake hands with one another. It turns out that you can predict the numbe

ycow [4]

Missing part of the question

Determine the number of handshakes, i, that will occur for each number of people, n, in a particular room. (people)

Answer:

$S_n = \frac{n}{2}(n - 1)$

Step-by-step explanation:

Given

For 5 people

$\begin{array}{cc}{People} & {Handshakes} & {5} & {4} & {4} & {3} & {3} & {2} & {2} & {1} & {1} & {0} &{Total} & {10} \ \end{array}$

Using the given instance of 5 people, the number of handshakes can be represented as:

$(n - 1) + (n - 2) + (n - 3) + ........ + 3 + 2 + 1 + 0$

The above sequence is an arithmetic sequence and the total number of handshakes is the sum of n terms of the sequence.

$S_n = \frac{n}{2}{(T_1 + T_n})$

Where

$T_1 = n - 1$ --- The first term

$T_n = 0$ --- The last term

So:

$S_n = \frac{n}{2}(n - 1 + 0)$

$S_n = \frac{n}{2}(n - 1)$

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2 years ago

The question is asking me what’s the slope and is giving me 4 options and it’s very difficult

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The answer to your question is C

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3 years ago

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A car with a mass of 1,500 kg broke down on the side of the road. How much force will be required

Schach [20]

Answer:

the answer is 4,500kgm/s2

Step-by-step explanation:

force= mass × acceleration

$f = 1500 \times 3 \\ = 4500kgm {s}^{ - 2}$

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3 years ago

How to simplify this expression

dexar [7]

Answer:

$\dfrac{x+2}{x+1}$

Step-by-step explanation:

Factor the numerator and cancel common factors from numerator and denominator.

$\dfrac{x^2-4}{(x-2)(x+1)}=\dfrac{(x-2)(x+2)}{(x-2)(x+1)}=\dfrac{x+2}{x+1}$

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3 years ago

1. Combine the expressions(a) 7x+3+6x +11​

1. Combine the expressions(a) 7x+3+6x +11