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Julli [10]
3 years ago
9

15. (4x +- 21) (x - 23)

Mathematics
1 answer:
Nadya [2.5K]3 years ago
3 0

Answer:

4

2

−

1

1

3

+

4

8

3

Step-by-step explanation:

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Determine whether the equation defines y as a function of x.<br> x+y=9 and x^2+y^2=1 and x=y^2
Murrr4er [49]

Answer:

Function: x+y=9

Not Function: x^2+y^2=1    and     x=y^2

Step-by-step explanation:

Given

x+y=9

x^2+y^2=1

x=y^2

Required

Determine if y is a function of x

Solving x+y=9

x+y=9

Make y the subject of formula

y = 9 - x

<em>Hence; y is a function of x</em>

Solving x^2+y^2=1

x^2+y^2=1

Subtract x² from both sides

y^2=1 - x^2

Square root of both sides

y =\± \sqrt{1 - x^2}

This implies that

y =\sqrt{1 - x^2}     or     y =-\sqrt{1 - x^2}

<em>Because </em>y<em> can be any of those two expressions, it is not a function.</em>

Solving x=y^2

x=y^2

Reorder

y^2 = x

Take square roots

y = \±\sqrt{x}

This implies that

y = \sqrt{x}      or        y = -\sqrt{x}

<em>Because </em>y<em> can be any of those two expressions, it is not a function.</em>

4 0
3 years ago
What is the measure of EBG?
Mars2501 [29]

Answer:

Easy. 41+32= 73 degrees

Step-by-step explanation:

4 0
3 years ago
PLEASE HELP I'M DESPERATE!!!<br><br> Order these from least to greatest.<br><br> 5/4, 1, 6/5
Kazeer [188]

Answer:

5/4 6/5 1 or 1 1/4. 1 1/6. 1

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
electric switches that regularly sell for $0.69 each are advertised this week at 5 for $2.75 . how much is saved by purchasing 5
grandymaker [24]

Answer:

So we will be saving a total of $0.7 at new rate

Step-by-step explanation:

Given:

Original price =$ 0.69

New price = $ 2.75 per 5 switches

To find:

Saving = ?

Solution:

The original per price of the switch is given as = $ 0.69

Discounted price of 5 switches at $2.75

5 Switch price at original price = Original price * No of switches

                                                       = 0.69 * 5

                                                       = $ 3.45

Total saving at buying 5 switches = 3.45 - 2.75

                                                           =$0.7

So we will be saving a total of $0.7 at new rate

3 0
4 years ago
How do I find the final price
Tema [17]
Add the sales tax from the discounted price
7 0
3 years ago
Read 2 more answers
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