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4 years ago

What did the friend do wrong in this equation?

Mathematics

1 answer:

rjkz [21]4 years ago

4 0

Answer:

4x + 2x = 90 NOT 180.

Step-by-step explanation:

x = 15 is the correct answer.

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A property contained ten acres. How many lots of not less than 50 feet by 100 feet can be subdivided from the property if 26,000

NemiM [27]

Answer:

81 lots of 5,000 square feet fits in the property.

Step-by-step explanation:

The first step is calculate the square feet of the minimum area:

$50 \: feets \times 100 \: feet = 5,000 \:square \: feet$

Second, from the ten acres we subtract the 26,000 feets of roads:

$1 \: acre = 60 \: feet \times 660\:feet = 43,560\:square\:feet\\43,560 \times 10 = 435,600\\435,600 - 26,000 = 409,600 \:square \: feet\:available$

Third, we divide the lot area over the available square feet

$\frac{409,600}{5,000} = 81.92$

81 lots of 5,000 square feet fits in the property.

7 0

4 years ago

The label on a can of lemonade gives the volume as 12 fl oz or 355ml . Verify that these two measurements are nearly equivalent

liraira [26]

We have been given that the label on a can of lemonade gives the volume as 12 fl oz or 355 ml and we are asked to verify that these two measurements are nearly equivalent.

Since we know that 1 fluid ounce equals 29.5735 ml. Let us find volume of lemonade can in ml by multiplying 12 by 29.5735.

$\text{Volume of can}=12\cdot29.5735$

$\text{Volume of can}=354.882$

$\text{Volume of can}=354.882\approx355$

We can see that 354.882 is nearly equivalent to 355. Therefore, we can say that these two measurements are nearly equivalent.

6 0

4 years ago

Increase by 40% (write the decimal multuplier)

DanielleElmas [232]

Answer: 0.040

Step-by-step explanation:

6 0

3 years ago

I need help and plez

Ksivusya [100]

100 / 120 / 121
10 11
Hope this helps

3 0

3 years ago

Find any relative extrema of the function. (Round your answers to three decimal places.)

Strike441 [17]

(x) = arcsec(x) − 8x

f'(x) = d/dx( arcsec(x) − 8x )

1/xsqrt( x^2 - 1) - 8

f'(x) = 0

1/xsqrt( x^2 - 1) - 8 = 0

8 x sqrt (x^2-1) = 1

( 8 x sqrt (x^2-1) )^2 = 1

64 x^2 ( x^2 - 1) = 1

64 x^4 - 64 x^2 =1

64 x^4 - 64 x^2 - 1 = 0

x = 1.00766 , - 1.00766

x = - 1.00766

f(- 1.00766) = arcsec(- 1.00766) − 8( - 1.00766)

f( - 1.00766 ) = 11.07949

x = 1.00766

f(1.00766) = arcsec(1.00766) − 8( 1.00766)

f(1.00766 ) = -7.93790

relative maximum (x, y) = (- 1.00766 , 11.07949 ) relative minimum (x, y) = ( 1.00766 , -7.93790 )

8 0

4 years ago