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2 years ago

Maths- please help me with this Q

Mathematics

2 answers:

Reika [66]2 years ago

5 0

Step-by-step explanation:

please mark me as brainlest

rjkz [21]2 years ago

5 0

Answer:

See below ↓

Step-by-step explanation:

Missing values (a)

$\left[\begin{array}{ccc}-1&1\\?&?\end{array}\right]$
Substituting x = 1 and x = -1 respectively in the equation y = x² - 4x
$\left[\begin{array}{ccc}-1&1\\5&-3\end{array}\right]$

Curve which matches the equation

On solving y = x² - 4x = x(x - 4) ⇒ x = 0, 4
It intersects the x axis at 0 and 4
The blue curve is the right one

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Given the graph below, which of the following points would be included in the graph of the inverse of the function?

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Answer : (1,-1)

a line through the points (-1, 1), (0, 2), (1, 3)

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For point (-1 , 1) , the point on inverse function is (1, -1)

For point (0 , 2) , the point on inverse function is (2, 0)

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3 years ago

The furniture store where Jada's sister works bought a table for $200 and sold it for $350. What percentage was the markup? I wa

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Answer:

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Step-by-step explanation:

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3 years ago

pls help will give brainliest Rena used the steps below to evaluate the expression (StartFraction (x Superscript negative 3 Base

kaheart [24]

Answer:

First "order of operations" mistake: step 2

First arithmetic mistake: step 4

Step-by-step explanation:

As we understand Rena's work, she wants to simplify ...

$\left(\dfrac{x^{-3}y^{-2}}{2x^4y^{-4}}\right)^{-3}$

for x = -1 and y = 2.

Her work seems to be ...

Step 1

$\text{Substitute $x=-1$ and $y=2$ into the expression}\\\\\left(\dfrac{(-1)^{-3}2^{-2}}{2(-1)^42^{-4}}\right)^{-3}\qquad\text{no error}$

Step 2

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Step 3

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Step 4

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_____

So, the first arithmetic error is in Step 4. However, the order of operations requires exponents be evaluated first. Doing that makes step 2 look like ...

$\left(\dfrac{-\dfrac{1}{4}}{2(1)\dfrac{1}{16}}\right)^{-3}=(-2)^{-3}\qquad\text{proper Step 2}$

We expect your answer is supposed to be Step 4.

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3 years ago

Solve for the value of v: V+27=117

Fudgin [204]

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