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fiasKO [112]
2 years ago
8

I can't solve this I need help??? ​

Mathematics
2 answers:
vredina [299]2 years ago
5 0
Picture or questions?
Semenov [28]2 years ago
3 0

Answer:

Yes.

Step-by-step explanation:

THERE IS NO QUESTION

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How many solutions does the equation have? 4x+19=-9-6x
valentinak56 [21]

Answer:

one solution; x= -28/10

Step-by-step explanation:

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2 years ago
The volume of a cubic box is 10 to the power of 6 cubic millimeters. Write the volume in standard form
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1 \times 10^{6} mm^{3}
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2 years ago
Using the Law of Cosines, in triangle DEF, if e=18yd, d=10yd, f=22yd, find measurement of angle D
Ivahew [28]
Check the picture below.

\bf \textit{Law of Cosines}\\ \quad \\
c^2 = {{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)\implies 
c = \sqrt{{{ a}}^2+{{ b}}^2-(2{{ a}}{{ b}})cos(C)}
\\\\\\
\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}=cos(C)\implies cos^{-1}\left(\cfrac{{{ a}}^2+{{ b}}^2-c^2}{2{{ a}}{{ b}}}\right)=\measuredangle C\\\\
-------------------------------\\\\
\begin{cases}
d=10\\
e=18\\
f=22
\end{cases}\implies cos^{-1}\left(\cfrac{{{ 18}}^2+{{ 22}}^2-10^2}{2(18)(22)}\right)=\measuredangle D

\bf \implies cos^{-1}\left(0.893\overline{93}\right)=\measuredangle D\implies 26.63^o\approx \measuredangle D

7 0
3 years ago
5x^2-(3xy-7x^2)+(5xy-12x^2)<br> When x=-0.25, and y=4
prohojiy [21]

5x^2-(3xy-7x^2)+(5xy-12x^2)=5x^2-3xy+7x^2+5xy-12x^2=2xy\\\\ 2\cdot(-0.25)\cdot4=-2

5 0
3 years ago
Read 2 more answers
Which shape has the greatest number of lines of symmetry
andrew-mc [135]
It’s the circle. Obviously
3 0
2 years ago
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