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kakasveta [241]
3 years ago
10

Find the value of 3.4(4 + 7) + 2³ - 2.67

Mathematics
2 answers:
mezya [45]3 years ago
8 0
3.4(11)+8-2.67      37.4+8-2.67=42.73 The answer is 42.73


Elenna [48]3 years ago
4 0
42.73 would be the answere. you world times 3.4 times 4 and 7 then just put in to a calculator.
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16.872 divided by 0.24<br><br><br> HELP I NEED HELP QUICJ
goldenfox [79]

Answer:

70.3

Step-by-step explanation:

16.872/.24= 70.3

6 0
3 years ago
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A teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard).
Tpy6a [65]
When a teacher gives a test with questions that fall into 3 levels of difficulty (easy, moderate, and hard) The scoring method that would best allow her to identify the students who need help is: 
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If G is the number of seconds that a traffic light says green and n is the average number of cars in each lane per light cycle,
Anna007 [38]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Ayesha has a theory about two digit numbers that have a larger tens digit than ones digit. she says that reversing the digits an
stira [4]
<span>Ayesha's right.  There's a good trick for knowing if a number is a multiple of nine called "casting out nines."  We just add up the digits, then add up the digits of the sum, and so on.  If the result is nine the original number is a multiple of nine.  We can stop early if we recognize if a number along the way is or isn't a multiple of nine.  The same trick works with multiples of three; we have one if we end with 3, 6 or 9.

So </span>1284673 <span>has a sum of digits 31 whose sum of digits is 4, so this isn't a multiple of nine.  It will give a remainder of 4 when divided by 9; let's check.

</span>1284673 = 142741 \times 9 + 4 \quad\checkmark<span>

</span>Let's focus on remainders when we divide by nine. The digit summing works because 1 and 10 have the same remainder when divided by nine, namely 1.  So we see multiplying by 10 doesn't change the remainder.  So 100 \times a + 10 \times b + c has the same remainder as a+b+c.

When Ayesha reverses the digits she doesn't change the sum of the digits, so she doesn't change the remainder.  Since the two numbers have the same remainder, when we subtract them we'll get a number whose remainder is the difference, namely zero. That's why her method works.
<span>
It doesn't matter if the digits are larger or smaller or how many there are. We might want the first number bigger than the second so we get a positive difference, but even that doesn't matter; a negative difference will still be a multiple of nine. Let's pick a random number, reverse its digits, subtract, and check it's a multiple of nine:

</span>813219543092195 - 591290345912318 =  221929197179877 = 9 \times 24658799686653 \quad \checkmark

6 0
3 years ago
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Please help! i can’t seem to find a answer to the this question.
DiKsa [7]

Answer:

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