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pshichka [43]
4 years ago
14

write a expression that shows how to multiply 7×256 using expanded form and distributive property

Mathematics
2 answers:
AlekseyPX4 years ago
6 0
(7 times 200)plus (7 times 50) plus (7 times 6)
S_A_V [24]4 years ago
3 0
Distributive property would be 7 (256) = 7 (200+50+6) = 7 (200)+7 (50)+7 (6) = 1400+350+42 = 1,792
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Solve: 12^x2+5x-4 =12^2x+6
lyudmila [28]

Answer:

x=2, x=-5

Step-by-step explanation:

to work more comfortably, the first thing we need to do is work the equation linearly, for that we take advantage of the property of logarithms that tells me that log(a^{b})=b*log(a)

in this way, the equation remains as:

log(12^{x^{2} +5x-4 } )=log(12^{5x+6} ) \\ (x^{2} +5x-4 )*log(12)=(5x+6) *log(12)\\x^{2} +5x-4 = 5x+6

Now we clear the equation so that it is of the form ax^{2} +bx+c=0

x^{2} +5x-2x=6+4\\ x^{2} +3x-10=0

finally, we apply the equation to solve second degree equations

x = \frac{-b \pm \sqrt {b^2-4ac}}{2a}

x = \frac{-3 \pm \sqrt {3^2-4*1*(-10)}}{2*1}\\ x = \frac{-3 \pm \sqrt {9+40}}{2}\\ x = \frac{-3 \pm 7}{2}

x=2 and x=-5

Done

5 0
4 years ago
Okay which fraction is equal to 0.370?
SashulF [63]

It should be B) because it the closest.

4 0
3 years ago
Read 2 more answers
Kimmy saving accounts has a balance of $76.23 in June by September her balance is 5 time as much as her June balance between Sep
hammer [34]

Answer:

Kimmy balance in December will be $545.21.

Step-by-step explanation:

Given:

Balance in account in June = $76.23

Now Given, by September her balance is 5 time as much as her June

It means that Balance in account till September is 5 times Balance in account in June.

framing in equation form we get;

Balance in account till September = 5\times \$76.23 = \$381.15

Also Given:

Balance Deposited in account between September and December = $87.83

Now We need to find balance till December.

Kimmy balance till December will equal to sum of Balance in account in June and Balance in account till September and Balance Deposited in account between September and December.

framing in equation form we get;

Kimmy balance till December = \$76.23+ \$381.15+\$87.83 = \$545.21

Hence Kimmy balance in December will be $545.21.

3 0
3 years ago
Which of the following is a root of the polynomial function below​
Lisa [10]

Answer: "C"

roots would make the function "0"

so just plug in the numbers...

with a + 12 you need minuses to cancel out...

B & C can not be the answer...

A is -i -3 + 4i - 12 which also is not 0

C is :  8i -12 -8i +12 WHICH DOES = 0

Step-by-step explanation:

8 0
3 years ago
A beach ball has a mass of 5 g and a volume of 20 cm3. What is the object's density? A. 4 g/cm3 B. 100 g/cm3 C. 0.25 D. g/cm3 4
Triss [41]
<h2>Hello!</h2>

The answer is:

C.  0.25\frac{g}{cm^{3} }

<h2>Why?</h2>

The density is the relation between the mass and the volume of an object. We are given four options to chose, and we can find the correct one by doing the following calculations:

Density=\frac{mass}{volume}=\frac{5g}{20cm^{3}}=0.25\frac{g}{cm^{3}}

So, the correct options is C.  0.25\frac{g}{cm^{3} }

Have a nice day!

7 0
4 years ago
Read 2 more answers
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