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Alex Ar [27]
3 years ago
11

I need help in solving this math question(-2z2-14)-(-12z2)

Mathematics
1 answer:
g100num [7]3 years ago
3 0
(-2z^2-14)-(-12z^2) =

Remove parentheses:

-2z^2 - 14 + 12 z^2

Group like  terms :

-2z^2 + 12z^2-14

add similar elements: 

-2z^2+12z^2 = 10z^2

=10z^2-14

hope this helps!
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Two trains 500 miles apart accidentally are on the same track heading toward each other. The passenger train is traveling 80 mph
Natalka [10]

Answer:

2 miles

Step-by-step explanation:

Their combined speed (speed of closure) is 80 mph + 40 mph = 120 mph.

120 mi/h = 120 mi/(60 min) = 2 mi/min

The distance between the trains at the 1-minute mark is ...

(1 min) · (2 mi/min) = 2 mi

They were warned when two miles apart.

3 0
3 years ago
To find the product of two digit number and a 1 digit number you can multiply the tens multiply the ones and find of each
kumpel [21]

Yes you can multiply 10 to find the numbers

4 0
3 years ago
Date
ololo11 [35]

Answer: 22%, 0.22, 11/50

Step-by-step explanation:

As a percent, 44/200 × 100 =

0.22 × 100

= 22%

As a decimal, divide 44 by 200 using a calculator; 44÷200 = 0.22

As a fraction in the simplest form, 44/200, we find the greatest common factor for the numerator and denominator, which is 4, divide 4 by numerator = 11

Divide 4 by denominator = 50

44/200 as a fraction = 11/50

5 0
3 years ago
find the approximate area of the shaded region below, consisting of a right triangle with a circle cut out of it. Use 3.14 as an
skad [1K]

Answer:

2794 m^2

Step-by-step explanation:

Area of Triangle - Area of Circle

1/2bh - piR^2

4050 - 1256

= 2794

3 0
3 years ago
Convert repeating decimal 9.81 to a fraction
vampirchik [111]

Answer:

981/100

Step-by-step explanation

step: 9.81= 9.81/1

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9.81/1 = (9.81*100)/(1*100)= 981/100

thus 981/100 is also equal to 9 81/100

6 0
3 years ago
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