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s2008m [1.1K]
4 years ago
8

Help me pleaseeeeeeeeeeeeeee

Mathematics
1 answer:
Free_Kalibri [48]4 years ago
6 0
34: compounds 29. noble gases 39. electrons 40. non-metal
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What is ......<br><br>(23×10)+(23×7)=​
babunello [35]

Answer:

391

Step-by-step explanation:

(23 x 10) + (23 x 7) =

230 + 161 =

391

Hope this helps! Please mark as brainliest.

5 0
4 years ago
The set of x values of a function, this is another name for domain
Naily [24]
The set of x values of a function is another name for domain. and the set of y values of a function is another name for range.

hope this helps, God bless!
5 0
3 years ago
What is the reasons for isosceles triangle theorem
podryga [215]
By the isosceles triangle theorem the two angles opposite the equal sides are themselves equal while if the third side is different then the third angle is different.
8 0
3 years ago
Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.)
Luda [366]

Answer:

a.b = (1*0) + (-4*2) +(1*-2)= -10

And replacing we got:

cos \theta = \frac{-10}{\sqrt{18} \sqrt{8}}= -\frac{10}{\sqrt{144}}= -\frac{10}{12}= -\frac{5}{6}

And we can find the angle with the inverse cosine function and we got:

\theta =cos^{-1} (-\frac{5}{6})= 146.44°

Step-by-step explanation:

for this case we can use the following identity:

cos \theta = \frac{a.b}{|a| |b|}

We can begin finding the norm for each vector and we got:

|a| =\sqrt{(1)^2 +(-4)^2 +(1)^2}= \sqrt{18}

|b| =\sqrt{(0)^2 +(2)^2 +(-2)^2}= \sqrt{8}

Now we can find the dot product and we got:

a.b = (1*0) + (-4*2) +(1*-2)= -10

And replacing we got:

cos \theta = \frac{-10}{\sqrt{18} \sqrt{8}}= -\frac{10}{\sqrt{144}}= -\frac{10}{12}= -\frac{5}{6}

And we can find the angle with the inverse cosine function and we got:

\theta =cos^{-1} (-\frac{5}{6})= 146.44°

5 0
3 years ago
What is the midpoint of the segment shown below?<br> Help me plz
Luda [366]
The midpoint would be A: (6,3) :)
3 0
3 years ago
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