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kirza4 [7]
3 years ago
7

Como se resuelve esto paso a paso

Mathematics
1 answer:
kondor19780726 [428]3 years ago
4 0

Answer:

by  using pemdas

Step-by-step explanation:

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Simplify:<br> 3(x+1)+7<br> Please explain how to figure it out
Sliva [168]

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3x+10

Step-by-step explanation:

6 0
3 years ago
in 1940, the u.s. army reported a total of 17,563 commissioned officers. of these, 939 were females. find the percent of female
Kisachek [45]

Answer: The percent of female commissioned officers in the army in 1940= 5.3%

Step-by-step explanation:

We are given that ,

The number of commissioned officers reported by U.S. Army  in 1940 = 17,563

The  number of female commissioned officers = 939

Then , the number of female commissioned officers in the army in 1940  would be :-

\dfrac{\text{\text{Number of Female officers}}}{\text{Total commissioned officers }}\times100

=\dfrac{939}{17563}\times100=5.3464670\approx5.3\%

Hence, the percent of female commissioned officers in the army in 1940= 5.3%

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3 years ago
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lyudmila [28]

Answer:

Option 3 and 5

Step-by-step explanation:

5 0
3 years ago
∆abc is isosceles, ab = bc, and ch is an altitude. how long is ac, if ch = 84 cm and m∠hbc = m∠bac +m∠bch?
Tems11 [23]
Given that <span>∆abc is isosceles and ab = bc, then m<bac = m<acb and m<hbc = 180 - m<bac - m<acb

Given that </span><span>m∠hbc = m∠bac +m∠bch, then m<hbc + m<bch = m<bac + 2m<bch

But m<hbc + m<bch = 90°, thus 90° = m<bac + 2m<bch

</span><span>Also, m∠bac + m∠ach = 90° ⇒ m<bac + 2m<bch = m<bac + m<ach ⇒ 2m<bch = m<ach

Since, Δabc is isosceles with ab = bc ⇒ m<bac = m<acb.

Also, m<acb = m<ach + m<bch ⇒ m<acb = 3m<bch = m<bac

</span><span><span>Since m<bch : m<ach = 1 : 2 ⇒ bh : ah = 1 : 2

Thus, bh:bc:ch=1:3:\sqrt{8}

Given that ch = 84 cm, then

\frac{bc}{ch} = \frac{bc}{84} = \frac{3}{\sqrt{8}}  \\  \\ \Rightarrow bc= \frac{3\times84}{\sqrt{8}} =63\sqrt{2}=ab

Now, ah= \frac{2}{3} (63\sqrt{2})=42\sqrt{2}

ac= \sqrt{ch^2+ah^2}  \\  \\ = \sqrt{84^2+(42\sqrt{2})^2}  \\  \\ = \sqrt{7056+3528} = \sqrt{10584}  \\  \\ =42\sqrt{6}
</span> </span>
6 0
3 years ago
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