3 years ago

Five times a number is added to two times its square. if the result is 168, find the number

Mathematics

1 answer:

Andreas93 [3]3 years ago

3 0

5x+(2x)^2= 168 now solve this

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Mr. John Doe was fighting out his federal income tax. His income was $26,800, but he was able to subtract $5,500in deductions. H

Ber [7]

Answer:

Step-by-step explanation:

7 0

3 years ago

The circumference of a circular table top is 283.48 inches. Find the area of this table top. Use 3.14 for piπ

velikii [3]

$\pi \times r {}^{2} \\ 3.14 \times {283.48}^{2} =$

252,333.258656 inches 2

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3 years ago

Ab and bc form a right angle at point B. if a= (-3,-1) and B= (4,4) what is the equation of BC?

Vesnalui [34]

Answer:

Option C $-7x-5y=-48$

Step-by-step explanation:

step 1

Find the slope of AB

we have

A(-3,-1) and B(4,4)

The slope m is equal to

$m=(4+1)/(4+3)$

$m=5/7$

step 2

Find the slope of BC

we know that

If two lines are perpendicular, then the product of their slopes is equal to -1

$m1*m2=-1$

we have

$m1=5/7$

substitute

$5/7*m2=-1$

$m2=-7/5$

step 3

Find the equation of the line into slope point form

$y-y1=m(x-x1)$

we have

$m=-7/5$

$B(4,4)$

substitute

$y-4=-(7/5)(x-4)$

Multiply by 5 both sides

$5y-20=-7x+28$

$7x+5y=28+20$

$7x+5y=48$

Multiply by -1 both sides

$-7x-5y=-48$

3 0

3 years ago

Select the correct answer,

krok68 [10]

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4 0

3 years ago

To increase an amount by 5.4% what single multiplier would you use

Rama09 [41]

I would use the decimal form of 5.4%. It is very easy to convert a percentage into a decimal. All you have to do is move the decimal point two places to the left and remove the % sign.

5.4% = 0.054

So, 0.054 would be your multiplier.

7 0

3 years ago