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geniusboy [140]
2 years ago
10

Evaluate x+3xy - 2y for x= 4 and y

Mathematics
2 answers:
qwelly [4]2 years ago
3 0
Hopefully it’s correct

scZoUnD [109]2 years ago
3 0
Uhh I feel like this is legit

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A dump truck brought 1⁄3 of a ton of rock on the first trip, 1⁄2 of a ton on the second trip, but on the third trip, had to take
Allisa [31]

Answer:

1/30 of a ton

Step-by-step explanation:

Write this as an expression:

1/3 of a ton and 1/2 of a ton were taken to the site.

4/5 of a ton were remove from the site.

Amount of a ton at the site  =   \frac{1}{3}+ \frac{1}{2}- \frac{4}{5}

Solve the equation by finding <u>common denominators</u> (when the bottom numbers are the same).

(\frac{1}{3}+ \frac{1}{2})- \frac{4}{5}       Focus on the first part. The least common multiple (LCM) of 3 and 2 is "6", which will become the denominator.

For <u>1/3 to become ?/6</u>, multiply top and bottom by 2.

For <u>1/2 to become ?/6</u>, multiply top and bottom by 3.

(\frac{2}{6}+ \frac{3}{6})- \frac{4}{5}

Now we can add the numerators together over the same denominator.

\frac{5}{6}- \frac{4}{5}

Do the same thing as before and change the denominators. The LCM of 6 and 5 is "30".

For <u>5/6 to become ?/30</u>, multiply top and bottom by 5.

For <u>4/5 to become ?/30</u>, multiply top and bottom by 6.

\frac{25}{30}- \frac{24}{30}

Subtract the numerators:

\frac{1}{30}                  Answer in tons

Therefore there was 1/30 of a ton of rock left at the construction site.

7 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through the point (4, -8) and has a<br> slope of 1/2
Ivanshal [37]

Answer:

y=1/2x-10

Step-by-step explanation:

y=1/2x+b

-8=1/2(4)+b

-8=2+b

-10=b

y=1/2x-10

4 0
3 years ago
2/15 voted omar, 3/5 voted scott, how many voted for Lindsay?
Talja [164]
2/15 and 3/5 share 15 as the least common denominator, hence, added up, it equals 11/15. Lindsay has 4/15 votes.

7 0
3 years ago
There are 10 fish in the pond.Some of them swim away.There are 3 fish left.How many fish are left in the pond? Show all your thi
OleMash [197]

10

Just because the fish swam away doesn't mean they left the pond

4 0
3 years ago
Read 2 more answers
The can of corn shown below has a circular top. What is the appropriate area of the top of the can?
azamat

Answer:

A.

Step-by-step explanation:

hope this helped

stay safe

brainliest is appreciated only 1more to level up please help :)))

7 0
3 years ago
Read 2 more answers
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