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n200080 [17]
3 years ago
15

1. Sally said that when you add or subtract positive or negative decimals, you can change the order of the decimals and still ge

t the same answer. Use these decimals to answer the questions
Mathematics
1 answer:
Oduvanchick [21]3 years ago
7 0

can you type the decimals in the comments
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F(x)=-12x - 2x + 60x² +14x-60
Leona [35]

Answer:

x=±1. are the factors of the quadratic equation.

Step-by-step explanation:

Given quadratic expression, f(x)=-12x - 2x + 60x² +14x-60

Rearranging and adding the terms in the expression and equating to zero.

f(x)= 60x² -60=0

60(x² - 1) =0

The zero product property states that if the product of a⋅b=0 then either a or b equal zero or both of them must be equal to zero. This basic property helps us solve the quadratic equations like (x+2)(x-5)=0 where x =-2,5.

from the zero product property we can infer that 60≠0⇒x² - 1=0

⇒(x+1)×(x-1) = 0

⇒x=±1.

Therefore, x=±1. are the factors of the quadratic equation.

3 0
3 years ago
ZABC and ZDEF are complementary angles.
Marat540 [252]

Answer:

x = 36

Step-by-step explanation:

Complementary angles add to 90 degrees

54+x = 90

x = 90-54

x = 36

4 0
2 years ago
Read 2 more answers
I NEED HELP ASAP!!
S_A_V [24]
(1,-1)
(-4,2)
(-2,1)
I believe these will work
4 0
3 years ago
X^2 + y^2=40 and y=x-4 solve this simultaneous equation
inn [45]
Write x-4 instead of y.
x²+(x-4)²=40
x²+x²-8x+16=40
2x²-8x-24=0
x²-4x-12=0
(x-6)(x+2)=0
x=6 or x=-2

for x=6, y=6-4 = 2
for x=-2, y=-2-4 = -6
3 0
3 years ago
If Katrina runs at a pace of 3 mph how many miles can she run in 2 hours
inessss [21]
6 miles.

3 miles per hour times 2 hours.
3 x 2 = 6.
6 0
3 years ago
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