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posledela
3 years ago
12

HELP ME PLEASE!!!!

Mathematics
1 answer:
Mariulka [41]3 years ago
3 0
27=9\cdot3\\48=16\cdot3\\\\7\sqrt{27}+5\sqrt{48}=7\sqrt{9\cdot3}+5\sqrt{16\cdot3}=7\cdot\sqrt9\cdot\sqrt3+5\cdot\sqrt{16}\cdot\sqrt3\\\\=7\cdot3\cdot\sqrt3+5\cdot4\cdot\sqrt3=21\sqrt3+20\sqrt3=41\sqrt3\\\\\text{Used:}\ \sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}\\\\\text{Answer:}\ 41\sqrt3
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ABC ≃DEF. Find the lengths of the given sides
GuDViN [60]

Answer:

BC = 8 and EF = 8.

Step-by-step explanation:

Since triangle ABC and DEF are congruent to each other, BC corresponds with EF (as determined by the triangle names).

Set BC and EF equal to each other.

x + 6 = 3x + 2

Subtract x from both sides.

6 = 2x + 2

Subtract 2 from both sides.

4 = 2x.

Divide 2 on both sides.

x = 2.

Substitute 2 for x.

BC = 2 + 6

BC = 8

Since we already know that EF is congruent to BC, EF is also 8.

EC = 3(2) + 2

EC = 6 + 2

EC = 8

5 0
3 years ago
What is the length of side BD?
VashaNatasha [74]

Answer:  26.1

<u>Step-by-step explanation:</u>

cos\theta=\dfrac{adjacent}{hypotenuse}\\\\\\cos(40^o)=\dfrac{20}{BD}\\\\\\BD=\dfrac{20}{cos(40^o)}\\\\\\BD=26.1

4 0
3 years ago
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A bank charges a service fee of 70.50 per month for a checking acount
timurjin [86]

The months till the account stability is terrible is 1.3 months.

<h3>What is account stability?</h3>
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To learn more about account stability from the given link:

brainly.com/question/13387881

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4 0
1 year ago
Plz plz plz plz help me​
Basile [38]

Answer:

  • 240 plants

Step-by-step explanation:

<u>Find the area of the garden:</u>

  • A = 1/2bh
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<u>Number of plants:</u>

  • 60*4 = 240 plants
7 0
3 years ago
Read 2 more answers
HELP:::: Find the volume
ad-work [718]

Answer:

94,080 cm^3

Step-by-step explanation:

V= L • W • H

V= 42 • 35 • 64

V= 94,080

Hope this helps, good luck!

4 0
3 years ago
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