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3 years ago

2 = because 2 = Obecause 2 2 =Obecause 2 = because

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

7 0

Answer:

Step-by-step explanation:

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Find the modulus and the unit vector along the sum of the vectors. - r₁ +r₂ +r3 given that r₁ = 2i+j+4k - r₂ = 3i-2j+7k, r3 = 5i

bazaltina [42]

j+8k

first -2i+j+4k-3i-2j+7k+5i+2j-3k

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2 years ago

13.......................

Alla [95]

Answer:

The answer is (d) ⇒ $pq^{2}r\sqrt[3]{pr^{2}}$

Step-by-step explanation:

* To simplify the cube roots:

If its number then the number must be written in the form x³

then we divide the power by 3 to cancel the radical

If its variable we divide its power by 3 to cancel the radical

∵ $\sqrt[3]{p^{4}q^{6}r^{5}}=p^{\frac{4}{3}}q^{\frac{6}{3}}r^{\frac{5}{3}}}$

∴ $p^{\frac{4}{3}}q^{2}}r^{\frac{5}{3}}=p^{1\frac{1}{3}}q^{2}r^{1\frac{2}{3}}$

∵ $p^{\frac{1}{3}}=\sqrt[3]{p}$

∵ $r^{\frac{2}{3}}=\sqrt[3]{r^{2}}$

∴ $p(p)^{\frac{1}{3}}q^{2}r(r)^{\frac{2}{3}}=p(\sqrt[3]{p})q^{2}r(\sqrt[3]{r^{2}})$

∴ $prq^{2}\sqrt[3]{pr^{2}}}$

∴ The answer is (d)

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3 years ago

My house is 20 miles from yours, but on the map it is only 4 mm away. What is the scale of the map? O A Imm = 5 mi B. I mm = 20

dlinn [17]

$\huge \bf༆ Answer ༄$

Let's use Unitary method to solve the question ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:4 \: mm \rightarrow20 \: miles$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:1 \: mm \rightarrow(20 \div 4) \: miles$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \:1 \: mm \rightarrow5 \: miles$

Therefore, 1 mm corresponds to 5 mile according to the map.

so, correct choice is ~

$\overbrace{ \underbrace{\underline{ \boxed{ \sf A }}}}$

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2 years ago

Rosita went to the mall.She purchased a smoothie for $4,a scarf for $12,and a scrunchie for $8.Rosita plans to add 4+12+8 to det

enyata [817]

Answer:

4+12+8 = 24

Step-by-step explanation:

4+8=12 + 12 = 24 :)

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3 years ago

What is the calculation of <img src="https://tex.z-dn.net/?f=2%205%20%5C6%20-%20%284%201%20%5C3%20-%203%20%5C2%29" id="TexFo

shepuryov [24]

25 ( 39 -9)

6 (6)

25  × 30

6 6

125

20 5  [ans]

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2 years ago