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3 years ago

Find the solutions to the equation below x^2-25=0

Mathematics

2 answers:

Arlecino [84]3 years ago

3 0

Answer:

x=5,x=-5

Step-by-step explanation:

The screenshot below will explain the answer

almond37 [142]3 years ago

3 0

Answer:

x = 5, -5

Step-by-step explanation:

Find the roots of $x^{2} -25=0$ by solving for x.

Add 25 to both sides

$x^{2} =25$

Square root both sides

$x = 5$

$x=-5$

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Peter is planting a rectangular garden. The length is 15 yards longer than the width. Jorge is planting a square garden. The sid

const2013 [10]

If the width of peter's garden is 32 yards, the ratio of the areas is 47: 32

<h3>Area of a rectangle.</h3>

area of rectangle = lw

where

l = length
w = width

Therefore,

Peter rectangular garden

l = 15 + x

Jorge is planting a square garden. The sides of Jorge's garden are equal to the width of Peter's garden.

Therefore,

x = side of Jorge garden

The ratios are as follows;

(15 + x)x : x²

Therefore, if the width of peter's garden is 32 yards, the ratio of the areas is as follows:

(15 + 32)32 : 32²

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376: 256

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47: 32

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1 year ago

Christopher borrowed $22,000 for 7 years. At the end of the loan, he had paid a total of $27,390. Find the interest rate on the

oee [108]

Step-by-step explanation:

okay so we know i = prt

in this scenario

p = 22,000

r = ?

t = 7

i = 27,390

the equation for r is (i/p*t)

so now let's plug in what we know

r = 27,390/22,000 * 7

r = 1.245 / 7

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5 0

3 years ago

The value, V (t), in dollars, of a stock t months after it is purchased is modeled by the following equation.

11Alexandr11 [23.1K]

Answer:

Step-by-step explanation: $V(t)= 42(1-e ^{1.5t} ) +36$ is given value in dollars of a stock in t months after it is purchased.

a) Substitute 1 for t

$V(1) = 42(1-e^{-1.5} )+36 \\=67.852\\=67.85$

V(12) = $V(1) = 42(1-e^{-1.5*12} )+36 \\=77.00$

b) Find derivative for V

$V'(t) = 42(-1.5) e^{-1.5t} )\\\\=-63e^{-1.5t}$

c) When V(t) = 75

$V(t)=75= 42(1-e ^{1.5t} ) +36\\1-e ^{1.5t=0.9286\\=-2.639$

d) As t tends to infinity, exponent being in negative t tends to 0

So V tends to 42(1-0)+36 = 78

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3 years ago

Use a calculator to find the trigonometric ratio to four decima place tan 23

Aneli [31]

Answer:

=0.4245 (4dp)

Step-by-step explanation:

tan(23)=0.4244748162

=0.4245 (4dp)

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3 years ago

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klio [65]

Answer:

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Step-by-step explanation:

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2 years ago