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Shtirlitz [24]
3 years ago
12

Which side of ΔDEF is the longest?

Mathematics
2 answers:
astraxan [27]3 years ago
7 0
The answer is B line DF
g100num [7]3 years ago
6 0

E = 77 degrees is the largest angle

Side DF is the longest side because it is opposite from the largest angle

The longest side of a triangle is always opposite the largest angle.

Answer: Choice B) line DF

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PQ= 2x +1 and QR= 5x - 44; find PQ
Lena [83]

2x+1=5x-44 that would be your equation

next start to simplify 

subtract 1 from both sides so you are left with 2x=5x-45

then subtract 5x from both sides and you have -3x=-45

then finally divide -3 from -45 to get x=15

6 0
2 years ago
Read 2 more answers
How many solutions does the system have?<br><br> y= -5x - 1<br> y = -5.2 + 7
mote1985 [20]

Answer:  y= -5x - 1

y = -5.2 + 7

Step-by-step explanation: y= -5x - 1 has 3.    y = -5.2 + 7  has 1

4 0
3 years ago
Krypton-91 is a radioactive substance that decays very quickly. The function Q(t)=Qoe^-kt models radioactive decay of krypton-91
Masteriza [31]
The "k" value should have units and should be negative.
k = -.07 / seconds
Half-Life = ln (.5) / k
Half-Life = ln (.5) / -.07
Half-Life = -.693147 / -.07
Half-Life = 9.9 seconds
(actually, wkpedia says half-life of Krypton 91 is 8.57 seconds)

elapsed time = half-life * log (bgng amt / end amt) / log (2)
elapsed time = 9.9 * log (100 / 10) / 0.30102999566
elapsed time = 9.9 * 1 / 0.30102999566
<span><span>elapsed time = 9.9 * 3.3219280949 </span>
</span><span><span><span>elapsed time = 32.8870881395 </span> </span> </span>
<span>elapsed time = 32.89 seconds (rounded)

Source:
http://www.1728.org/halflife.htm

</span>
6 0
3 years ago
Read 2 more answers
Worth 18points
svet-max [94.6K]
D.) <span>A picnic table is on sale for 40 percent off. The original price of the picnic table is x, $144.10

It is on sale for 40% so, new amount will be 60%, and x is the sale price, so in order to calculate original price, you have to multiply them

Hope this helps!</span>
8 0
3 years ago
Mandy shaded the fraction strip below to represent a fraction Shade the fraction strip below so that it represents a fraction th
Aleksandr-060686 [28]

Your question is missing the figure, so the figure for your question is attached below:

Answer:

shade 2 strips out of 4 to get fraction strip equivalent to Mandy's fraction strip

Step-by-step explanation:

As Mandy shaded the 3 trips out of the total six strips. It shows the fraction of  \frac{3}{6}

and \frac{3}{6}=\frac{1}{2}

To shade the given fraction strip so that it represents a fraction that is equivalent to Mandy's fraction strip, we should shade 2 stripes out of 4 that is equivalent to \frac{1}{2}

i.e. \frac{2}{4}=\frac{1}{2}

My Fraction Strip is equivalent to Mandy's Fraction Strip because both are equal to \frac{1}{2}

5 0
3 years ago
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