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Lina20 [59]
3 years ago
5

PLEASE HELP ASAP! BRAINLIEST TO BEST/RIGHT ANSWER!

Mathematics
1 answer:
Gelneren [198K]3 years ago
4 0
3x3x3x3 = 81
x.x.x.x = x^4
2x2x2x2 = 16

B. 81x^4/16
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Triangle DEF is an isosceles, so DEF = DFE.
Katarina [22]

Answer:

m∠CFD=105\°

Step-by-step explanation:

we know that

m∠CFD+m∠DFE=180\° ------> by supplementary angles

we have

that

m∠DFE=m∠DEF=75\°

so

m∠CFD+75\°=180\°

m∠CFD=180\°-75\°=105\°

8 0
3 years ago
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Mike has 57 action figures. Alex has 186 action figures. Which is the best estimate of the number of action figures together?
MariettaO [177]
57 rounds to 60 and 186 rounds to 190. 60+190=150

5 0
3 years ago
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A. What is 45/56 simplified?
dimulka [17.4K]

Answer:

Below in bold.

Step-by-step explanation:

In each case you divide top and bottom by the GCF.

A. The GCF of 45 and 56 is 1.

so the answer is 45/56.

B. 15/16 (GCF = 1)

C. Here the GCF is 5 so the answer is (35/5) / (80/5)

= 7/16.

D. 5/6 (GCF is 4).

8 0
3 years ago
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At noon, ship A is 170 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 20 km/h. How fast is
garik1379 [7]
Check the picture below.

now, keep in mind that ship B is going at 20kph, thus from noon to 4pm, is 4 hours, so it has travelled by then 20 * 4 or 80 kilometers, thus b = 80.

whilst the ship B is moving north, the distance "a" is not really changing, and thus is a constant, that matters because the derivative of a constant is 0.

\bf c^2=a^2+b^2\implies \stackrel{chain~rule}{2c\cfrac{dc}{dt}}=0+2b\cfrac{db}{dt}\implies \cfrac{dc}{dt}=\cfrac{b\frac{db}{dt}}{c}
\\\\\\
\begin{cases}
\frac{db}{dt}=20\\
c=10\sqrt{353}\\
b=80
\end{cases}\implies \cfrac{dc}{dt}=\cfrac{80\cdot 20}{10\sqrt{353}}\implies \cfrac{dc}{dt}=\cfrac{160}{\sqrt{353}}
\\\\\\
\textit{and rationalizing the denominator}\implies \cfrac{160\sqrt{353}}{353}

8 0
3 years ago
BRAINLIEST! URGENT! Please help me, If you can explain how you got the answer and if you answer both questions, I will mark you
anastassius [24]

Answer:

1. I have simplified the first question:

x=\frac{10-ab}{a-4};\quad \:a\ne \:4

2. I have found the parabola properties:

\left(h,\:k\right)=\left(\frac{5}{2},\:\frac{25}{4}\right),\:p=-\frac{1}{4}

6 0
2 years ago
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