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anonymous
 5 years ago
Threefourths of seven less than a number is fortytwo. Find the number.
anonymous
 5 years ago
Threefourths of seven less than a number is fortytwo. Find the number.

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(3/4)(x7) = 42. Gogogo

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\frac{3(x7)}{4} = 42 \rightarrow \frac{4(42)}{3} = x7 \rightarrow x=?\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Close.. \[ x7 = 56 \rightarrow x7+7 = 56 +7 = x = ?\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok i got another for you...i like your help

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The real trick here is in setting up the problem initially. Being able to convert word problems into workable equations is a good talent to develop.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0suzette did twice as many pushups as mark did. bonnie did five less pushups than mark did. if they did 71 pushups together how many did each do?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\text{Polpak I prefer } \implies\ \text{instead of} \rightarrow\] The latter looks to much like a limit.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Let S be the number of pushups Suzette did, and M be the number Mark did, and B is the number Bonnie did. Translate this sentence into an equation. "They did 71 pushups altogether."

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Newton: \[ \lim_{n \rightarrow 0}\] Looks like a limit \[ \rightarrow \] doesn't. Not to me anyway. And in my homework I always use a single arrow instead of the double thing, so it feels more natural to me.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That's a bit of a leap. Try just using the variables I defined. If they all did 71 pushups then: \[ M + S + B = 71\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Then we look at how M, S, and B are otherwise related.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0"Bonnie did 5 less pushups then Mark" \[ \rightarrow B = M5\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0"Suzzette did twice as many pushups as mark" \[ \rightarrow ?\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Right. Now, using what we know about S and B, we can go back to our original equation and find how many mark did. \[ M+S+B=71\] Using the fact that S=2M \[ \rightarrow M + 2M + B = 71\] Using the fact that B=M5 \[ \rightarrow ?\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I plugged in 2M for S in the M + S + B = 71 equation. Now do the same for B.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes, that's the equation for what B _is_. Now use that in the equation M + S + B = 71

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0B = M  5. Would you agree then that M + S + B = M + S + (M5) ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And since S = 2M Would you agree that M + S + (M5) = M + 2M + M  5 ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[ S = 2M \] \[\rightarrow M + S = M + 2M \] \[ B = M5\] \[ \rightarrow M + S + B = M + S + (M5) \] \[ = (M + S) + (M5) = M + 2M + M5\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Does that make sense?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0S = 2M S + 5 = 2M + 5 right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If S = 2M then S + SOMETHING = 2M + SOMETHING

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That is what equals means

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I don't understand what you're not understanding. Which part is confusing?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im a retard when it comes to math...i dnt even know where to begin to solve ur problem

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Do you understand what S = 2M means? It means that anywhere you have an S, you can replace it with a 2M and it will mean the same thing.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So if we have an equation M + S + B = 71, we can replace the S with 2M right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So rewrite the equation by replacing the S. Also replace the B since we know that B = M5.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Not quite. M + 2M = 71 is the same as saying M + S is 71. But we know that's not true because M + S + B is 71 and B is not 0. M + 2M + B = 71 is true. But since we know B = M5 we can replace B in this equation and we get?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Right. Now, since we said that M + S + B = 71 and we said that M + S + B = M + 2M + M  5 Then we know that M + 2M + M  5 = 71 So solve for M.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[ M + 2M + M 5 = 71\] \[ \rightarrow 4M 5 = 71 \] \[ \rightarrow 4M = 76 \] \[ \rightarrow M = 76/4 \] \[ \rightarrow M = 19 \]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0S = 2M = 2(19) = 38 B = M5 = 195 = 14

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the sum of three numbers is 48. the first number is 12 more than the secong number, andthe third number is 20 less than twice the second number. find the three numbers.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok. This one you're gonna need to put more of the effort into. First pick variables for each of your 3 numbers (A, B, C?). Then take each sentance and see what it's telling you about your numbers. (Try to write the sentance as an equation)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The first sentance is: The sum of the three numbers is 48. So your equation is ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Perfect. Now the next sentence. The first number is 12 more than the second. Therefore?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And finally, The third number is 20 less than twice the second number.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.02B = twice the second number. twenty less than twice the second number = twenty less than 2B = 2B  20 If 2B is 10, than 20  10 is not twenty less than 10.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So now put them all together. You have 1 equation with all 3 elements, and 2 other equations that give you replacement values for A and C. So replace them in and solve for B.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A + B + C = 48 A = 12 + B So.. ? + B + C = 48 Fill in the ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0... No A = 12 + B. So (A) + B + C = (12+B) + B + C right??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If A + B + C = 48 and A = 12 + B and C = 2B  20 the (A) + B + (C) = ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Just replace the A and the C.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0With what they equal.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i cant tell you what a equals without knowing b

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0............... You do know what A equals. A equals 12 + B. Period. It may also be represented in a different way, but you at least know that much.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So put 12 + B where there is an A. And put 2B20 where there is a C.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Right. And what does that equal again?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So what does B equal ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Actually that's not quite right.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you have 12 + B + 2B  20 which equals (12+B) + (2B20) which equals A + C. You forgot the B in the middle.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Rewrite the equation again. A + B + C = 48, A = B + 12, C = 2B20 So...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A + B + C = (12+B) + B + (2B20) ^A + ^B + ^C Right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So if A + B + C = 48, what is B.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[12 + B + B + 2B  20 = 48\] \[\rightarrow 4B  20 + 12 12 + 20 = 48  12 + 20 \] \[\rightarrow 4B = 60 + 20\] \[\rightarrow 4B = 40\] \[\rightarrow B = 10\] \[\rightarrow A = 12 + B = 12 + 10 = 2 \] \[\rightarrow C = 2B20 = 20 20 = 40 \]
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