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m_a_m_a [10]
3 years ago
15

Selma is buying a cell phone for business. The regular price of the phone is $179. If she buys the phone at 20% discount how muc

h will she save?
Mathematics
1 answer:
Nuetrik [128]3 years ago
4 0

Answer:

\large \boxed{\$35.80}  

Step-by-step explanation:

Discount = Regular price × % discount

\text{Discount} = \text{\$179 regular price} \times \dfrac{\text{\$20 }}{\text{\$100 regular price}} = \textbf{\$35.80}\\\text{Selma will save $\large \boxed{\mathbf{\$35.80}}$}

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Solve x2 − 12x + 5 = 0 using the completing-the-square method. x = six plus or minus the square root of five x = negative six pl
Andru [333]

we are given

x^2-12x+5=0

we have to solve it by completing square method

step-1: Move 5 on right side

x^2-12x+5-5=0-5

x^2-12x=-5

step-2: Break middle term

x^2-2*6*x=-5

step-3: Add 6^2 both sides

x^2-2*6*x+(6)^2=-5+(6)^2

(x-6)^2=31

step-3: Solve for x

\sqrt{(x-6)^2} =\sqrt{31}

we wil get two values

First value is

x-6=\sqrt{31}

add both sides 6

x-6+6=6+\sqrt{31}

x=6+\sqrt{31}

Second value is

x-6=-\sqrt{31}

add both sides 6

x-6+6=6-\sqrt{31}

x=6-\sqrt{31}

so, solutions are

x=6+\sqrt{31}

x=6-\sqrt{31}.............Answer

5 0
3 years ago
Is 21,063 divisible by three? If it is, write a number as a product of three and another factor if not, explain
Zarrin [17]
Twenty-one thousand and sixty-three divided by three is 7021

First, take any number (for this example it will be 492) and add together each digit in the number (4+9+2 = 15). Then take that sum (15) and determine if it is divisible by 3. The original number is divisible by 3 (or 9) if and only if the sum of its digits is divisible by 3 (or 9).If a number is a multiplication of 3 consecutive numbers then that number is always divisible by 3. This is useful for when the number takes the form of (n * (n - 1)*(n + 1))Example: 492 (The original number). 4 + 9 + 2 = 15 (Add each individual digit together). 15 is divisible by 3 at which point we can stop. Alternatively we can continue using the same method if the number is still too large: 1 + 5 = 6 (Add each individual digit together). 6 ÷ 3 = 2 (Check to see if the number received is divisible by 3). 492 ÷ 3 = 164 (If the number obtained by using the rule is divisible by 3, then the whole number is divisible by 3)
4 0
3 years ago
21/x=84/120 solve the proportion​
Nimfa-mama [501]

Answer:  X= 30

Step-by-step explanation:

Hope that helped :)

3 0
3 years ago
HALP PLAEZ IM STRUGGLING<br> brainliest to whoever answers them all!
makvit [3.9K]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
What numbers multiply to -756 but when added = 1
telo118 [61]
So?
-756*x +x =1 ?
-755 x = 1
x= -1/755

or
what two numbers when multiplied equal -756 but when added together equal 1?

numbers are x and y
x*y= -756
x+y=1

rearrange the 2nd eq
y=1-x
substitute

x(1-x)=-756
distribute
x-x^2=-756
solve for zero
x^2-x-756=0

factor/quadratic equation
8 0
3 years ago
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