What's the simplified form of 2x + 3 - x + 5?a. 3x + 8
b. x - 8
c. x - 2
d. x + 8

Answers

Answer 1

Answer: D.
Because you can combine all like terms. 2x and -x can be solved. That would equal x. +3 and +5 can be combined to make a positive 8. Therefore the answer would be x+8.

Answer 2

Answer: Ok so at first this problem may seem confusing but no worries. MATH is like that so our first step is to combine like terms which are the variables in the equation . So we have 2x+3-x+5 so like I said combine like terms is the first step so 2x and 1x are like terms because they have the variable x involved so when we subtract we get a result of 1x now wr have to add the constants which afr the numbers without variables which would equal the final form 1x+8 your answer is d

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In a group of 55 people, 33 are coffee drinkers and 12 are tea drinkers. Assuming that no one in this group drinks both tea and coffee, what is the probability that a person picked at random from the group does not drink tea or coffee?

Answers

12+33=45. 45/55 people drink tea or coffee. This means if you picked someone randomly there would be a 45/55 chance that they drink tea or coffee. This means there is a 10/55 chance of someone who drinks neither. We can simplify this to 2/11.

Answer:

D. 2/11

Step-by-step explanation:

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What is x^2 -7x + 12 = 0 what is using method of factoring

Answers

$x^2 -7x + 12 = 0 \n \n (x - 4)(x - 3) = 0 \n \n x = 4, 3 \n \n$

The final result is: x = 4, 3.

The ratio of boys to girls in a group is 7:2. If there are 65 more boys than girls, work out how many boys there are.

Answers

Answer:

91 boys

Step-by-step explanation:

Given that the ratio of boys to girls = 7 : 2 = 7x : 2x ( x is a multiplier )

There are 65 more boys than girls , thus

7x = 2x + 65 ( subtract 2x from both sides )

5x = 65 ( divide both sides by 5 )

x = 13

There are 7 × 13 = 91 boys in the group

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4x-3-3x=12+2x Find x

Answers

Answer: X= -15

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

A certain species of tree grows an average of 3.1 cm per week. Write an equation for the sequence that represents the weekly height of this tree in centimeters if the measurements begin when the tree is 400 centimeters tall.