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Lady bird [3.3K]
3 years ago
9

A single box of thumb tacks weighed 3 1

Mathematics
1 answer:
emmasim [6.3K]3 years ago
5 0
3 \frac{1}{2} *4 \frac{1}{7} = \frac{7}{2} * \frac{29}{7} = \frac{29}{2} =  14\frac{1}{2} =14.5
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Consider the two expressions 4b(b+1) and (2b+7)(2b-8). Compare their values if b=-3, b=-2, and if b=10. Is it true that for an v
frutty [35]

Answer:

FIRST EXPRESSION:

-  If b=-3, the value of 4b(b+1) is  24

-  If b=-2, the value of 4b(b+1) is  8

- If b=10, the value of 4b(b+1) is  440

 SECOND EXPRESSION:

-  If b=-3, the value of (2b+7)(2b-8)) is  -14

-  If b=-2, the value of (2b+7)(2b-8)) is  -36

- If b=10, the value of (2b+7)(2b-8)) is  324

Yes, for any value of "b" the value of the first expression is greater than the value of the second expression.

Step-by-step explanation:

Substitute the given values of "b" into each expression and evaluate.

- For the first expression 4b(b+1), you get:

If b=-3 → 4(-3)(-3+1)=24

If b=-2 → 4(-2)(-2+1)=8

 If b=10 → 4(10)(10+1)=440

 - For the second expression (2b+7)(2b-8)), you get:

If b=-3 → (2(-3)+7)(2(-3)-8)=-14

If b=-2 → (2(-2)+7)(2(-2)-8)=-36

 If b=10 → (2(10)+7)(2(10)-8)=324

You can observe that for any value of "b" the value of the first expression is greater than the value of the second expression.

7 0
3 years ago
What is the coefficient of the term x7y in the expansion of (x + y)^8?
s344n2d4d5 [400]
<span>The coefficient for x^7*y is equal to 8Choose7 which is 8!/7! which is 8, or answer b. Pascal's triangle may be used to capture this as well, or use the exponent as above.</span>
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3 years ago
Write log4 14 as a logarithm of base 3. <br><br> HELP!!!!!
Sonja [21]
It would be log3 14/log3 4
Hope this helps. (:
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3 years ago
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A school newspaper will survey students about the quality of the
Novay_Z [31]
Method 2 is the least biased.

1) vegetarians are a select group, so they might have a certain biased perspective
2) if students are chosen randomly from every grade, all grades are included and there will be a variety of responses
3)not all students dislike the program, so it is an unfair representation
4)only students who have a strong opinion will complete the survey
3 0
3 years ago
14/15 divided by 1 1/20=?
aalyn [17]
This is the answer to your question. I hope this helps!

5 0
3 years ago
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