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2 years ago

Hey! can you please do these 5 questions correctly? Thanks and i need answers ASAP :)) (will give 20 points and brainliest)

Mathematics

1 answer:

max2010maxim [7]2 years ago

4 0

Answer:

6.) 13 > c; open; left

7.) -9 < s; open; right

8.) 16 $\geq$ j; closed; left

9.) -16 $\leq$ z; closed; right

10.) 18 < w; open; right

Explanation:

Open (exclusive) whenever the sign is > and <. Closed (inclusive) whenever the sign is $\geq$ and $\leq$ . Goes to the left if the letter has the less than(#>c, c<#) or the less than and equal to(# $\geq$ c, c $\leq$ #) sign points towards it. Goes to the right if the letter has the greater than(#<c, c>#) or the greater than and equal to(# $\leq$ c, c $\geq$ #) sign points towards it. For the first part of the the questions just move all of the numbers to one side and the variables to the other.

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The combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO₂). Two autos are making a trip of 600 m

rewona [7]

Answer:

Approximately 50 pounds less carbon (in CO₂) will be produced by the second auto on this trip.

Step-by-step explanation:

We have been given that the combustion of one gallon of automobile fuel produces about 5 pounds of carbon (in CO₂). Two autos are making a trip of 600 miles.

Let us find amount of fuel used by autos by dividing the total distance by their mileage.

$\text{Fuel used by 1st auto}=\frac{\text{ 600 miles}}{\frac{\text{ 20 miles}}{\text{gallon}}}$

$\text{Fuel used by 1st auto}=\frac{\text{ 600 miles}}{\text{ 20 miles}}\times \text{gallon}$

$\text{Fuel used by 1st auto}=30 \text{ gallons}$

$\text{Fuel used by 2nd auto}=\frac{\text{ 600 miles}}{\frac{\text{ 30 miles}}{\text{gallon}}}$

$\text{Fuel used by 2nd auto}=\frac{\text{ 600 miles}}{\text{ 30 miles}}\times \text{gallon}$

$\text{Fuel used by 2nd auto}=20 \text{ gallons}$

Let us find the difference of fuel used by both autos.

$\text{Number of gallons that 2nd auto used less than 1st auto}=30-20$

$\text{Number of gallons that 2nd auto used less than 1st auto}=10$

Since one gallon of automobile fuel produces about 5 pounds of carbon, so 10 gallons of fuel will produces $5\times 10=50$ pounds of carbon.

Since 2nd auto used 10 gallons less than 1st auto, therefore, 2nd auto will produce 50 pounds less carbon than 1st auto.

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2 years ago

What is the product?<br><br> (5r + 2)(3r − 4)

bazaltina [42]

this is the answer 15r^2 − 14r − 8

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3 years ago

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3 years ago

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Answer:

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3 years ago

Read 2 more answers

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Maurinko [17]

The given equation is:

x+ $\frac{1}{2} (6x-4)=6.$

Multiplying both sides by 2 we have:

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8x=16.[Addition property of equality]

Dividing both sides by 8:

x=2 [Division property of equality.]

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7 0

3 years ago