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1 year ago

Someone help please :)

Mathematics

2 answers:

antoniya [11.8K]1 year ago

8 0

Answer:

Not shaded, because the equation is not true when you plugged in ( 0,0)

Step-by-step explanation:

Blizzard [7]1 year ago

7 0

Answer: not shaded i think

Step-by-step explanation:

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Simplify expression x8y-26/x14y-5 × x-39y-21

koban [17]

The simplified form of the expression is $x^{-45} y^{-42}$

<h3>Simplifying an expression</h3>

From the question, we are to simplify the given expression

The given expression is

$\frac{x^{8}y^{-26} }{x^{14}y^{-5} } \times x^{-39} y^{-21}$

The expression can be simplified as shown below

$\frac{x^{8}y^{-26} }{x^{14}y^{-5} } \times x^{-39} y^{-21}$

$\frac{x^{8} \times x^{-39} \times y^{-26} \times y^{-21} }{x^{14} \times y^{-5} }$

$\frac{x^{8+-39} \times y^{-26+-21} }{x^{14} \times y^{-5} }$

$\frac{x^{8-39} \times y^{-26-21} }{x^{14} \times y^{-5} }$

$\frac{x^{-31} \times y^{-47} }{x^{14} \times y^{-5} }$

Then,

$\frac{x^{-31} }{x^{14} } \times \frac{ y^{-47} }{ y^{-5} }$

$x^{-31-14} \times y^{-47--5}$

$x^{-31-14} \times y^{-47+5}$

$x^{-45} \times y^{-42}$

$x^{-45} y^{-42}$

Hence, the simplified form of the expression is $x^{-45} y^{-42}$

Learn more on Simplifying an expression here: brainly.com/question/2320607

#SPJ1

3 0

1 year ago

A plane made a trip to Miami and back. It flew 400mph on the way there and flew 450mph on the return trip. How long did the trip

quester [9]

Answer:

equation: 400 + ( 450×10)= h

h= 4900.

4 0

2 years ago

4. If f(x) = |2x - 4 find f(-7)<br> a.-18<br> b. 18<br> d. 10

bezimeni [28]

Answer:

Answer is a

Step-by-step explanation:

4 0

2 years ago

The length of a rectangular garden is 5 feet less than 4 times its width. Its area is 359 square feet. Find the length and width

fiasKO [112]

Given parameters:

Area of the rectangular garden = 359ft²

Unknown:

length and width of the garden = ?

To find the length and breadth of the garden, we need to define and know that the area of a rectangle is.

Area of a rectangle = Length x Breadth

From the problem statement;

Let w = width of the rectangular garden

L = length of the garden;

Now,

length of a rectangular garden is 5 feet less than 4 times its width

L = 4w - 5

Now let us substitute this into the equation;

Area = L x w

359 = (4w - 5)w

4w² - 5w - 359

Using:

w = -b ± √b² - 4ac / 2a

where b = -5 , a = 4 and c = -359

w = -(-5) ± √-5² - 4(4)(-359) / 2(4)

w = 5 ± √25 + 5744 / 8

w = 5 ± 75.9 / 8

w = $\frac{5 + 75.9}{8} or \frac{5 - 75.9}{8}$

w = 10.1ft

The other solution is not possible it will be a negative value. Width value cannot be negative.

So L = 4w - 5 = 4(10.1) - 5 = 35.5ft

The length and breadth of the rectangular are 35.5ft and 10.1ft respectively.

3 0

2 years ago

If xy + x = 12 and dx/dt = -3, then what is dy/dt when x = 2 and y = 5?

dlinn [17]

If $xy + x = 12$ , then
$\dfrac{d}{dt}(xy+x)= \dfrac{d}{dt}(12)$ .
Use the chain rule:
$y\dfrac{dx}{dt}+x \dfrac{dy}{dt}+ \dfrac{dx}{dt}=0$ ,
Since x=2, y=5, <span>dx/dt = -3, then
</span>
$5\cdot (-3)+2\cdot \dfrac{dy}{dt}+(-3)=0, \\ 2\cdot \dfrac{dy}{dt}=18, \\ \dfrac{dy}{dt}=9$ .

3 0

2 years ago