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1 year ago

10

Write a multiplication expression that you can use to find 1 3/7 ÷ 10 1/9. Then find the quotient.

1 answer:

lidiya [134]1 year ago

4 0

Answer:

$\frac{90}{637}$

Step-by-step explanation:

$1. \: \frac{1 \times 7 + 3}{7} \div 10 \frac{1}{9} \\ 2. \: \frac{7 + 3}{7} \div 10 \frac{1}{9} \\ 3. \: \frac{10}{7} \div 10 \frac{1}{9} \\ 4. \: \frac{10}{7} \div \frac{10 \times 9 + 1}{9} \\ 5. \: \frac{10}{7} \div \frac{90 + 1}{9} \\ 6. \: \frac{10}{7} \div \frac{91}{9} \\ 7. \: \frac{10}{7} \times \frac{9}{91} \\ 8. \: \frac{10 \times 9}{7 \times 91} \\ 9. \: \frac{90}{7 \times 91} \\ 10. \: \frac{90}{637}$

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3 years ago

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2 years ago

A single layer of gold atoms form a surface whose dimensions are 1.0x10^3 angstroms by 1.0x10^3 angstroms. 1 angstrom=10^-10 met

erastovalidia [21]

Answer:

Part A) $1*10^{6}\ angstroms^{2}$

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Step-by-step explanation:

Remember that

When multiply numbers in scientific notation, multiply the coefficients and then add the exponents

Part A) what is the area of this surface in square angstroms?

The area is equal to

$A=(1*10^{3})( (1*10^{3})=(1)*(10^{3+3})=1*10^{6}\ angstroms^{2}$

Part B) What is the surface area in square centimeters

we know that

1 angstrom=10^-10 m

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1 angstrom=10^-8 cm

Convert angstroms to cm

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The area is equal to

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3 years ago

Two joggers run 5km north and then 12km west. What is the shortest distance to the nearest tenth of a kilometer, they must trave

lesantik [10]

Answer:

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Step-by-step explanation:

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As you can see from the attachment, right angle triangle is formed by the given information, and we have to find hypotenuse.

lets apply Pythagoras theorem to determine the shortest distance

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where a=12km and b=5km

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c= 13 km.

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3 years ago

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