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3 years ago

Which expression represents “add 7 and a number n, then multiply 8 cubed!?”

Mathematics

1 answer:

Paraphin [41]3 years ago

3 0

Answer:

A. Would be your answer

Step-by-step explanation:

7 plus a number n is 7+n, so B and D are already incorrect.

The phrase “and then multiply” suggests parenthesis be around the numbers/variables you would need to do first, so that excludes C.

Making A. your only answer left

Hope I helped!

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Which is more, 1 kilometer or 1,359 meters?

algol13

Answer:

1359 meters

Step-by-step explanation:

thenks and mark me brainliestt :))

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2 years ago

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The United States is about the only country that still uses the units feet, miles, and gallons. However, you might see some car

Black_prince [1.1K]

Answer: $4.5 \text{ miles per gallon}$

Step-by-step explanation:

Given : The fuel efficiency of car = 7.6 km per kilogram

We also given that

1 mile = 1.609 km

Then, $\text{1 km}=\dfrac{1}{0.609}\text{ mile}$

1 gallon = 3.785 liters

$\text{1 liter}=\dfrac{1}{3.785}\text{ gallon}$

1 liter of gasoline = 0.729 kg

Then, $\text{1 kg}=\dfrac{1}{0.729}\text{ liter}$

$\Rightarrow\ \text{1 kg}=\dfrac{1}{0.729}\times\dfrac{1}{3.785}\text{gallon}$

Now, the fuel efficiency of car will be :

$7.6\times\dfrac{1}{0.729}\times\dfrac{1}{3.785}\times\dfrac{1}{0.609}\\\\=4.52275317827\approx4.5 \text{ miles per gallon}$

Hence, the car’s fuel efficiency in miles per gallon= 4.5

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3 years ago

Part E

Rina8888 [55]

Answer:

Step-by-step explanation:

OK you should really have these by now.

Translation, reflection and rotations do not change segment lengths or angular relationships. They only change line slopes and/or y-intercepts.

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2 years ago

1) Solve the inequality.<br> 8x + 9 < 4x - 3

Nitella [24]

Answer:

x < -3

Step-by-step explanation:

subtract 4x: 4x + 9 < -3

subtract 9: 4x < -12

divide by 4: x < -3

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3 years ago

What is 25% of 10....

Gekata [30.6K]

Answer: 2.5

10 X 25%

25% = 25/100 = 0.25

10x0.25 = 2.5

Hope this helps!!

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3 years ago

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