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3 years ago

Simplify the following expression: 2x − 4y + 3x2 + 7y − 16x.

Mathematics

2 answers:

mafiozo [28]3 years ago

5 0

Answer:

-14x+3y+6

Step-by-step explanation:

first do 3x2

then do 2x-16x

then do -4y+7y

algol [13]3 years ago

4 0

Answer:

3x2×3y-14x

Step-by-step explanation:

Combine like terms

-4y and 7y = 3y

-16x and 2x= -14x

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Which equation(s) have x = –3 as the solution? log3(2x + 15) = 2 log5(8x + 9) = 2 log4(–20x + 4) = 3 logx81 = 4

baherus [9]

Answer:

log_3(2x+15)=2 and log_4(-20x+4)=3

Step-by-step explanation:

Plug it in and see!

$log_3(2x+15)=2\\log_3(2(-3)+15)=2\\log_3(-6+15)=2\\log_3(9)=2\\\text{ This is a true equation because } 3^2=9\\\\\\log_5(8(-3)+9)=2\\log_5(-24+9)=2\\log_5(-15)=2\\\\\text{ Not true because you cannot do log of a negative number }\\\\log_4(-20(-3)+4)=3\\log_4(64)=3\\\text{ this is true because } 4^3=64\\\\\\log_x (81)=4\\log_{-3}(81)=4\\\text{ the base cannot be negative }\\\\\\\\\text{ There is only two options here} \\\\log_3(2x+15)=2 \text{ and } log_4(-20x+4)=3$

6 0

3 years ago

Read 2 more answers

How many tons are in 448,000 ounces?

777dan777 [17]

Answer: 14

Step-by-step explanation: hope this helps u :)

4 0

3 years ago

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A center-pivot sprinkler system operated by Colorado Land & Agriculture, Inc., is used to water the alfalfa in a circular fi

omeli [17]

Answer:

The answer is "1.448 miles".

Step-by-step explanation:

X= The distance to both the nozzle clogged from of the starting point.

X $\sim$ Uniform(0,2) miles.

They are simulating the random number Y=0.724, and the Y has both a distribution uniform(0,1). Therefore 2Y is distributed evenly (0.2). And They model the clogging of its nozzle at 2Y=1.448 miles

8 0

2 years ago

Can someone help me with question 5-9

Tju [1.3M]

If a circle is equal to 365°, take 365° and multiply is by each percentage:
Potatoes - 365° x .088 = 32.12 = 32°
Green Beans - 365 x .119 = 43.435 = 43°
Corn - 365 x .151 = 55.115 = 55°
Carrots - 365 x .108 = 39.42 = 39°
Broccoli - 365 x .197 = 71.905 = 72°

7 0

3 years ago

PLEASE HELP AND EXPLAIN! (3 different problems)

Margaret [11]

Answer:

a}4/3

b}

c}-1/4

Step-by-step explanation:

a}4-c/4-(2+b)

putting the values of b and c n its place

4-(-4)/4-(2-4)

4+4/4-(-2)

8/4+2

8/6

4/3 or 1.33

b}IDK SORRY

c} y-x+5+y/4

-1-4+5-1/4

-6+5/4

-1/4

5 0

3 years ago