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Alla [95]
3 years ago
9

Complete the steps to factor the tens 30 x 40

Mathematics
2 answers:
bija089 [108]3 years ago
8 0
(3 * 10) * (4 * 10)
For now we can just do 3*4 and add the 0s later.
So 3 * 4 = 12 and now we add the zeros that we took away so it's now 1200. Tbh, I think that's what it means by factoring the tens because I haven't done it in so long, so I'm sorry if that's not what it is, but the answer is 1200.
OR it might be asking:
(3 * 4) * (10 * 10)
So then it's 12 * 100 which equals 1200.
Harlamova29_29 [7]3 years ago
6 0
1,200 is the answer.
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Find the rational zeros of the polynomial function, f(x)= 4x^3-8x^2-19x-7
Dima020 [189]

Answer:

The rational zero of the polynomial are \pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1  .  

Step-by-step explanation:

Given polynomial as :

f(x) = 4 x³ - 8 x² - 19 x - 7

Now the ration zero can be find as

\dfrac{\textrm factor of P}{\textrm factor Q} ,

where P is the constant term

And Q is the coefficient of the highest polynomial

So, From given polynomial ,  P = -7 , Q = 4

Now , \dfrac{\textrm factor of \pm P}{\textrm factor of \pm Q}

I.e  \dfrac{\textrm factor of \pm P}{\textrm factor of \pm Q} = \frac{\pm 7 , \pm 1}{\pm 4 ,\pm 2,\pm 1 }

Or, The rational zero are \pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1

Hence The rational zero of the polynomial are \pm \frac{7}{4}, \pm \frac{1}{4},\pm \frac{7}{2},\pm \frac{1}{2},\pm 7,\pm 1  .  Answer

7 0
3 years ago
What is 2x squared plus 7x minus 15= 0
OverLord2011 [107]

Answer:

Step-by-step explanation:

The answer is 0

4 0
2 years ago
Gia is painting her wall. 1 liter of paint can cover 10 square meters. She has a rectangular wall that
garik1379 [7]
5*4 equals 20 so her wall is 20 square meters
Given that one litre can cover 10 square meters, she needs 2 litres of paint to cover the wall
7 0
3 years ago
A toxic radioactive substance with a density of 7 milligrams per square centimeter is detected in the ventilating ducts of a nuc
uysha [10]
For this case we have an equation of the form:
 y = A * (b) ^ t
 Where,
 A: initial amount
 b: decrease rate
 t: time in years.
 Substituting values we have:
 7 = A * (0.5) ^ ((1/20) * t)
 For t = 45 years we have:
 7 = A * (0.5) ^ ((1/20) * 45) 
 Clearing A:
 A = 7 / ((0.5) ^ ((1/20) * 45))
 A = 33.3
 Answer:
 
the density of the substance when it was deposited 45 years ago was:
 
A = 33.3 milligrams per square centimeter
5 0
3 years ago
Someone please do this for me to be the brainliest personnn I will love you forever
laila [671]

Answer:

1) 2

2) -7/6

3) -5/4

4) -1/2

5) -13/28

6) 9/7

Step-by-step explanation:

5) (-6-7)/(17-(-11))=-13/28

6) (4-(-5)/(3-(-4))=9/7

5 0
3 years ago
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