2 years ago

I really need help on this problem!!

Mathematics

1 answer:

Alex787 [66]2 years ago

5 0

Answer:

a rectangle would provide the largest area for the pigs

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A = √7 + √c and b = √63 + √d where c and d are positive integers.

mrs_skeptik [129]

Answer:

$\displaystyle a:b=\frac{1}{3}$

Step-by-step explanation:

Ratios

We are given the following relations:

$a=\sqrt{7}+\sqrt{c}\qquad \qquad[1]$

$b=\sqrt{63}+\sqrt{d}\qquad \qquad[2]$

$\displaystyle \frac{c}{d}=\frac{1}{9} \qquad \qquad [3]$

From [3]:

$9c=d$

Replacing into [2]:

$b=\sqrt{63}+\sqrt{9c}$

We can express 63=9*7:

$b=\sqrt{9*7}+\sqrt{9c}$

Taking the square root of 9:

$b=3\sqrt{7}+3\sqrt{c}$

Factoring:

$b=3(\sqrt{7}+\sqrt{c})$

Find the ration a:b:

$\displaystyle a:b=\frac{\sqrt{7}+\sqrt{c}}{3(\sqrt{7}+\sqrt{c})}$

Simplifying:

$\boxed{a:b=\frac{1}{3}}$

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2 years ago

What are the x- and y-intercepts of the graph of y = x2 + 3x − 10? (1 point)

Lynna [10]

Answer:

x-intercepts: (2, 0) and (−5, 0)

y-intercept: (0, −10)

Step-by-step explanation:

y = x^2 + 3x − 10

y-intercept when x = 0 so y = -10, so y-intercept : (0, -10))

x-intercept when y = 0 so

x^2 + 3x − 10 = 0

(x +5)(x - 2) = 0

x + 5 = 0; x = -5

x - 2 = 0; x = 2

So x-intercepts: (-5, 0) and (2,0)

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2 years ago

Evaluate. Express each result in scientific and standard form. (3.24×103)(6.7×104)

anyanavicka [17]

I’m assuming the 3 and 4 are exponents??
The answer is
2.1708 x 10^7

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2 years ago

Which fraction does point A show? A.3/7 B.3/4 C.8/5 D.7/4

IgorLugansk [536]

Answer:

d 7/4

Step-by-step explanation:

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2 years ago

What is this? I need it please 1/3x+2=1/5x-8

tatiyna

Answer:

x=-75

Step-by-step explanation:

6 0

2 years ago

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