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3 years ago

Combine like terms to create an equivalent expression. 3.4 − 2.8d + 2.8d − 1.3

Mathematics

1 answer:

love history [14]3 years ago

8 0

Answer: the answer is: 5.6d+2.1 thats the final answer to that question.

Step-by-step explanation:

this is how you would combine like terms; you would match whatever #'s or letters together that is how you combine like terms.

for this one you would do it like this... 2.8d+2.8d-3.4-1.3 (this is how you would combine them) to solve it you would add 2.8d and 2.8d and would minus 3.4 and 1.3. i didn't solve it yet for you. if you would like me to solve it, let me know. but i explained it to you already on how to solve it.

hope that helps!

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A coin is tossed four times What is the probability of getting four heads? (1 mark) a) b) What is the probability of getting exa

BlackZzzverrR [31]

<h2>Answer:</h2>

1. A coin is tossed four times. What is the probability of getting four heads?

Each toss has a 1/2 chance of getting a head.

So the chance of getting all four heads can be calculated as :

$1/2\times1/2\times1/2\times1/2=1/16$

2. A coin is tossed four times. What is the probability of getting two heads?

Each toss can have 2 results, so 4 flips will have $2^{4}$ or 16 results.

Getting two heads means getting two tails also. So, we can get the number of times two heads come = $\frac{4!}{2!2!}$ = 6

We can write the groups like - {HHTT,HTHT,HTTH,THHT,THTH,TTHH}

So, the required probability is : 6/16 or 3/8.

3. Not getting two heads means getting 3 tails and 1 head or all tails.

Probability of having all tails = $1/2\times1/2\times1/2\times1/2=1/16$

Probability of one head(1st trial) and three tails = 1/16

Probability of one head (2nd trial) and three tails (the 1st, 3rd and 4th trials) = 1/16

Probability of one head (3rd trial) and three tails (the 1st, 2nd and 4th trials) = 1/16

Probability of one head (4th trial) and three tails (the 1st, 2nd and 3rd trials) = 1/16

So, the total probability showing only one or none head and at least three tails = $1/16+1/16+1/16+1/16+1/16=5/16$

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3 years ago

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A bakery uses 8 table spoons of honey for every 10 cups of flour to make bread dough some days they bake bigger batches and some

Arada [10]

Answer:

The ratio would be, 4 tablespoons of honey: 5 cups of flour

Step-by-step explanation:

4/5 is the simplified version of 8/10, which is what we were first given

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Asher has about a probability of winning then Ethan has which could be the outcome that Ashlee needs to win the game select thre

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Answer:

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Rolling a sum less than 5, there is 6 possibilities, which is a better chance.

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Rolling a sum of 9,

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