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Liono4ka [1.6K]
3 years ago
13

I need help on fractions and decimal world problems​

Mathematics
1 answer:
rjkz [21]3 years ago
8 0
What answer do you need help on
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Long-grain rice costs $0.72/lb. How much would 2.7 lb of long-grain rice cost?
sweet-ann [11.9K]
If $.72 per 1lb, then $x per 2.7lb, by using proportional property:

.72/1 = x/2.7      cross multiply

x = (.72)*(2.7) = $1.94
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3 years ago
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9 Quesions, 30 Points!!!! PLEASE HELP!
Sloan [31]
Note: I'm afraid I can't put the work for the answers, for lack of time =/
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1. 0 or -3

2. 0 or 4

3. -2 or 3

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9. Substitute 0 for h in "h = -16x^2 + 16x" then solve for x
0 = -16x^2 + 16x

<span>Subtract -16x^2+16x from both sides.
</span><span>0−<span>(<span><span>−<span>16x2</span></span>+16x</span>)</span></span>=<span><span><span>−<span>16<span>x2</span></span></span>+<span>16x</span></span>−<span>(<span><span>−<span>16x2</span></span>+16x</span>)
</span></span><span><span>16<span>x2</span></span>−<span>16x</span></span>=<span>0
</span>
Factor the left side of the equation
<span><span>16x</span><span>(<span>x−1</span>)</span></span>=<span>0
</span>
Set factors to equal 0
<span><span>16x</span>=<span><span><span>0<span> or </span></span>x</span>−1</span></span>=<span>0
</span>x = 0 or x = 1
3 0
3 years ago
Which points did you include in your response? Check all that apply
iogann1982 [59]

Answer:

any of them work

Step-by-step explanation:

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just olya [345]

Answer:

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Step-by-step explanation:

If there are 150 teachers and 50 are math teachers to find the percentage you have to divide 50 by 150 and get .33333333 repeating so its 33%

8 0
3 years ago
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