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2 years ago

Please help quickk!!

Mathematics

1 answer:

Airida [17]2 years ago

3 0

21 = 6

7 = 5

1 = 4

hope this helps

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9 more than 4 times a number is the same as one less than twice the number . find the number

solong [7]

Let the no be x
4x+9=2x-1
2x=-10
x=-5

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3 years ago

Ben has 12 more autographed baseball cards than Kevin. If Ben has 27 cards, how many does Kevin have?

777dan777 [17]

Idk man it’s a hard one

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3 years ago

Read 2 more answers

The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $380 for 48

andrezito [222]

Answer:

$y=0.2x+284$

Step-by-step explanation:

Let x be the distance driven, d-distance and C our constant.

Our information can be presented as:

$y=mx+c\\\\450=830x+C\ \ \ \ \ \ \ \ \ eqtn 1\\\\380=480x+C\ \ \ \ \ \ \ \ \ eqtn 2$

#Subtracting equation 2 from 1:

$70=350x\\x=0.2$

Hence the fixed cost per mile driven, $x$ is $0.20

To find the constant, $C$ we substitute $x$ in any of the equations:

$450=830x+C\ \ \ \ \ \ \ X=0.2\\\therefore C=450-830\times0.2\\=284$

Now, substituting our values in the linear equation:

$y=0.2x+284$ #y=cost of driving, x=distance driven

Hence the linear equation for the cost of driving is y+0.2x+284

7 0

2 years ago

Find the product (a^2-b)(5a^2+6b)

Pie

Answer:

5a^4+a^2b−6b^2

Step-by-step explanation:

1. Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd.

5a^4+6a^2b−5ba^2−6b^2

2. Collect like terms.

5a^4+(6a^2b−5a^2b)−6b^2

3. Simplify.

5a^4+a^2b−6b^2

7 0

2 years ago

Please help me please!!!!!!

amm1812

The answer is D. I graphed it on Desmos Graphing Calculator and I've linked the screenshot.

Hope this helps :)

7 0

3 years ago