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3 years ago

Why is it important that everyone follow the same order of operations when evaluating expressions?

2 answers:

7 0

Because if not, different people would get different answers. If the expression is evaluated without using the order of operations, the answer won’t be the same. I hope this helps!

deff fn [24]3 years ago

4 0

As an example, let’s say we had 3+4x2
Without PEMDAS, we would add 3 and 4, then multiply by 2, getting 14 (the wrong answer).
With PEMDAS, we would multiply 4 and 2, then add 3, getting 11 (the correct answer!).
So if you don’t use PEMDAS, you’ll just get a different answer than you should’ve. Hope that helped!

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On a test, shelly got approximately 93% of the items correct. she got 76 questions right. how many questions were on the test? a

svetlana [45]

You multiply 76 by 0.93. That is 70.68 which rounds to 71. To check, (71/76) = ~93.

8 0

3 years ago

Colin invests £4800 into his bank account.

weeeeeb [17]

Answer:

$5903.39

Step-by-step explanation:

This can be solve using compound interest formula. The formula is:

$F=P(1+r)^t$

Where

F is the future amount (what we are looking for)

P is the present amount (which is 4800)

r is the rate of compound interest per year, in decimal (3% per year, 3/100 = 0.03)

t is the time in years ( t = 7)

Now we substitute these values into the formula and find F:

$F=P(1+r)^t\\F=4800(1+0.03)^7\\F=4800(1.03)^7\\F=5903.39$

So, Colin would have $5903.39 after 7 years, in his account.

7 0

3 years ago

Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster. Upper A magazine asks its r

AlladinOne [14]

Answer:

Convenience sampling

Step-by-step explanation:

Convenience sampling is a type of non-probability sampling method that is used base on the ease of access to subjects or people. The only criteria is whether the participants agree to participate. It is the most commonly used sampling technique because it is readily available, easy to access, prompt, uncomplicated, and economical. Although it is not often recommended for research because of sampling error possibility and lack of representation of population. Examples of convenience sampling are sharing flyers of upcoming events or promotion in a shopping mall, asking people to answer questions in a store, online and offline survey and collecting market research data from a conveniently available pool of respondents.

Considering, Upper A magazine asks its readers to call in their opinion regarding the quality of the articles is a convenient way of collecting market research data from available readers who may agree to participate. Therefore, the sampling is a convenience sampling.

6 0

3 years ago

What number is halfway between –3 and 4 ?

Levart [38]

Answer:

0.5

Step-by-step explanation:

4-(-3)

4+3=

Half of 7 is 3.5

4-3.5=0.5

4 0

3 years ago

Read 2 more answers

Solve for x in the diagram below.

SVEN [57.7K]

Step-by-step explanation:

x+(3x+10)=90

4x+10=90

4x=80

x=20 Ans

6 0

3 years ago