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SpyIntel [72]
3 years ago
13

Can someone help me ???

Mathematics
1 answer:
Sphinxa [80]3 years ago
4 0
Rational numbers are whole integers w no fractions. bc the square root of 72 is not a whole number, it is irrational
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A student said that x = 4 was not a solution to the question 3(x -6) = -8
Morgarella [4.7K]

Answer:

Step-by-step explanation:

3 (4 -6) = -8 is correct.  The next step is to combine 4 and -6, obtaining

3(-2)

and this 3(-2) should equal -6, which is not the same as -8.

3(4 - 6) = 12 - 18, which differs from the student's solution.  This is the reason for the wrong answer.

6 0
2 years ago
Determine the center and radius of the following circle equation:
ioda

Answer:

C(5,-9) and r=8.

Step-by-step explanation:

C(p, q) - center

r=radius

k:x^2 +y^2 +dx+ey+f=0

x^2+y^2 - 10x+18y+42=0

d=-10, e=18, f=42

p=-d/2=-(-10)/2=10/2=5

q=-e/2=-18/2=-9

r^2 =p^2+q^2-f

r^2 =5^2 +(-9)^2 - 42

r^2=25+81-42

r^2 =106-42

r^2 =64

r=sqrt(64)

r=8

C(p,q)=C(5,-9) r=8

5 0
3 years ago
Find the surface area. SHOW WORK
anastassius [24]
22x12x5 and you will get the answer
4 0
3 years ago
Identify the self assessment test that each
ladessa [460]

there is not enough info for this

5 0
2 years ago
The original price of a toaster is $18.00. If the toaster is marked down 25%, what is the new price?
Alla [95]

Answer:

$13.50

Step-by-step explanation:

First, we got to multiply $18 by 25% or .25

$18 x .25 = $4.50

Lastly, we just subtract $4.50 from $18.

$18 - $4.50 = $13.50

5 0
3 years ago
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