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3 years ago

Help me with this please

Mathematics

1 answer:

bulgar [2K]3 years ago

5 0

$\huge \color{Lime} Answer:$

$\medium \color{Red} Cone$

$\medium \color{Yellow} Cylinder$

$\medium \color{Purple} Rectangular Prism$

$\medium \color{Green} Triangular Prism$

$\medium \color{Blue} Rectangular Pyramid$

<h2>Watch carefully because Cylinder and Rectangular Prism changed position.</h2>

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Solve |y - 2|<10<br><br> {y|-8 < y < 12}<br> {y|-12 < y < 8}<br> {y|-8 < y < 8}

lukranit [14]

The answer is -8 < y < 12

3 0

3 years ago

walnut grower estimates from past records that if 20 trees are planted per acre, then each tree will average 60 pounds of nuts p

laila [671]

Answer:

5 trees should be planted to maximize the yield per acre,

The maximum yield would be 1250

Step-by-step explanation:

Given,

The original number of trees per acre = 20,

Average pounds of nuts by a tree = 60,

Let x be the times of increment in number of trees,

So, the new number of trees planted per acre = 20 + x

∵ for each additional tree planted per acre, the average yield per tree drops 2 pounds,

So, the new number of pounds of nut = (60 - 2x)

Thus, the total yield per acre,

$Y(x) = (20+x)(60-2x)$

Differentiating with respect to t ( time ),

$Y'(x) = (20+x)(-2) + 60 - 2x = -40 - 2x + 60 - 2x = 20 - 4x$

Again differentiating with respect to t,

$Y''(x) = -4$

For maxima or minima,

$Y'(x) = 0$

⇒ 20 - 4x = 0

⇒ 20 = 4x

⇒ x = 5,

For x = 5, Y''(x) = negative,

Hence, Y(x) is maximum for x = 5,

And, maximum value of Y(x) = (20+5)(60 - 10) = 25(50) = 1250,

i.e. 5 trees should be planted to maximize the yield per acre,

and the maximum yield would be 1250 pounds

4 0

2 years ago

Find the surface area of each prism

goldfiish [28.3K]

Answer:

Step-by-step explanation:

Surface area = ( 6 *10 ) *3 + ( ( 7*4.87) /2)*2 = 180 + 34.09 = 214.09

Surface area = (5*10) *3 + (( 7*4.2)/2)*2 = 150 +29.4 = 179.4

6 0

3 years ago

Carrie has 300 marbles 25 of the marbles are green 15% of the marbles are red and the rest of the marbles are blue how many blue

Rus_ich [418]

Answer:

230.

Step-by-step explanation:

$\: \: \: \: 300 - 25 - \frac{15}{100} \times 300 = \\ = 275 - 45 = \\ = 230$

Hope this helps!

4 0

3 years ago

Read 2 more answers

64 percent of what number is 48

sergey [27]

The answer I got was 75%

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3 years ago