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3 years ago

PLEASE HELP THIS IS URGENT!!! I need an answer so bad :(

Mathematics

1 answer:

alexandr402 [8]3 years ago

8 0

Answer:

(2,6)

Step-by-step explanation:

Substitute y=3x into y=x+4 to get 3x=x+4. Solve for x.

x=2

Put x into either equation to get y=3(2) or y=(2)+4

y=6

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Find the surface area of the solid figure below:

Artemon [7]

Answer:

190

Step-by-step explanation:

Surface Area of Rectangular Prism:

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3 years ago

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Malina has to bowl four games in her league. She bowled a 149, 162, and a 152 in her first three games. She wants to have an ave

alina1380 [7]

Answer:

She needs 153

Step-by-step explanation:

Let x be the score in the 4th game

To find the average add up the scores and divide by the number of scores added

(149+162+152+x) /4 = 154

Multiply each side by 4

(149+162+152+x) /4 *4= 154*4

(149+162+152+x) = 616

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x+463=616

Subtract 463 from each side

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3 years ago

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ABCDEFGHIJKLMNOPQRSTUVWXYZ i get it

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A person plans to use 300 feet of fencing to enclose a rectangular play area. what dimensions of the rectangle would maximize th

Klio2033 [76]

The maximum "rectangle" would be a square.
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3 years ago

Find the max/min value of f(x) = 2x2 + 3x - 5

Lelechka [254]

Answer:

The minimum value is $(-\frac{3}{4},-\frac{49}{8})$ or $(-0.75,-6.125)$

Step-by-step explanation:

we have

$f(x)=2x^{2}+3x-5$

This is the equation a vertical parabola open upward

The vertex represent a minimum

The general equation in vertex form is

$f(x)=a(x-h)^2+k$

where

(h,k) is the vertex

Convert the given function in vertex form

$f(x)=2x^{2}+3x-5$

Factor 2

$f(x)=2(x^{2}+\frac{3}{2}x)-5$

Complete the square

$f(x)=2(x^{2}+\frac{3}{2}x+\frac{9}{16})-5-\frac{9}{8}$

$f(x)=2(x^{2}+\frac{3}{2}x+\frac{9}{16})-\frac{49}{8}$

Rewrite as perfect squares

$f(x)=2(x+\frac{3}{4})^{2}-\frac{49}{8}$

The vertex is the point $(-\frac{3}{4},-\frac{49}{8})$

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3 years ago