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pantera1 [17]
3 years ago
7

A phone is originally priced a $40, is discounted to$30.What is the percent of discount?

Mathematics
1 answer:
natulia [17]3 years ago
5 0

Answer:

10%

Step-by-step explanation:

40-10=30

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Find 3 ordered pairs which are Solutions to the equation 2x - 3y = 12
KonstantinChe [14]
2x-3(0)=12
2x=12
x=6
(6,0)

2(0)-3y=12
-3y=12
y=-4
(0,-4)

2x-3(2)=12
2x-6=12
2x=18
x=9
(9,2)

ANSWERS: (6,0) (0,-4) (9,2)
7 0
4 years ago
What is the maxima minima or zero for this graph???
ANTONII [103]

Maximum is the highest a graph can reach. In this case the graph continues forever therefore the maximum is:

infinity or ∞

The minimum is the lowest place the graph reaches. In this case it would be:

-6

The zeros are where the graph intersects the x axis. In this case it would have two zeros, which are:

(-3, 0) and (0.5, 0)

Hope this helped!

~Just a girl in love with Shawn Mendes

5 0
4 years ago
Does anyone know how to do number 18????
AnnyKZ [126]

Answer: angle ITU = 145 degrees

===============================================

Explanation:

Angle STU is the largest angle composed of the smaller angles STI and ITU.

In other words, the two smaller angles add up to the larger one.

(angle STI) + (angle ITU) = angle STU

( 20 ) + ( 12x+1 ) = 13x + 9

20+12x+1 = 13x+9

12x+21 = 13x+9

21-9 = 13x-12x

12 = x

x = 12

Using this x value, we find that,

angle ITU = 12x+1 = 12(12)+1 = 145 degrees

----------

As a side note,

angle STU = 13x+9 = 13(12)+9 = 165 degrees

This is confirmed with

(angle STI) + (angle ITU) = (20) + (145) = 165 = angle STU

3 0
3 years ago
What is the result of subtracting the second equation from the first?
Elina [12.6K]

Answer:

-9

Step-by-step explanation:

The awnswer to the first equation is -4 and -4-5 is equal to -9

7 0
3 years ago
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(-64)^(1/2) evaluated?
bazaltina [42]

Answer:

8i

Step-by-step explanation:

<em>When a quantity is raised to a fractional power, you need to root it to the power of the denominator. </em>

<em>For example, </em><em>(-64)^(1/2)  =  √(-64) </em>

<em>Since you are taking the root of a negative, you will need to put an </em><em>i</em><em> (imaginary) in your answer.</em>

3 0
3 years ago
Read 2 more answers
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