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Lorico [155]
3 years ago
14

The amounts of e-waste generated in a region during two years were 14,200,000 tons and 10,700,000 tons. What was the total e-was

te generated over these two years in the region, expressed in scientific notation? (5 points)
A. 2.49 ⋅ 107 tons
B. 2.49 ⋅ 1014 tons
C. 24.9 ⋅ 107 tons
D. 24.9 ⋅ 1014 tons
Mathematics
2 answers:
mafiozo [28]3 years ago
8 0
The answer is c nanannaana
MArishka [77]3 years ago
6 0

Answer:

C

Step-by-step explanation:

c because if 10,700,000 divided by 100000 its a but add that 5 times and its 1014.

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Tom has a scale model of his car. The scale factor is 12. If the actual car has 16-inch wheels, what size are the wheels on the
Allushta [10]

Answer:The scale is 1:12, and the actual car has 16-in wheels.

Step-by-step explanation:

So the setup would be a proportion:

1 over 12=x over 16

Then cross-multiply

12x=16

Divide by 12

X=16/12

=4/3 or 1 and 1/3 in. wheels on the model car.

6 0
3 years ago
Read 2 more answers
Which answer choice shows 12.473 rounded to the nearest half?
Vlad [161]

Answer:

C. 12.5

Step-by-step explanation:

If you round it into the nearest half, you'll get 12.5.

3 0
3 years ago
The vertical of three squares are joined to form a right triangle , what is the area of the largest square
lakkis [162]

Answer:

43cm²

Step-by-step explanation:

let's first consider the area of a square.

the area is L² which means all sides are equal so we take the length times the breadth which is both equal because like we said all sides are equal.

so to find the side of the square using the area, we take the square root of both of the area.

\sqrt{25}  = 5

and also

\sqrt{18}  = 4.2

so we have the height of the triangle as 5cm and the base is 4.2cm.

now, from the triangle, since we have two sides and it's a right-angled, we can use Pythagoras' formula.

\sqrt{ {5}^{2}  +  {4.2}^{2} }  = 6.53cm

so the side 6.53cm is also the same side as the largest triangle. Since it's a square, all sides are equal. So we find the area of the largest triangle by using the formula

Area = L²

Area = 6.53²

Area = 42.6cm

the nearest cm square

Area = 43cm²

8 0
2 years ago
Read 2 more answers
Calculate: <br><br> 462 grams(g)=____milligrams (mg)
egoroff_w [7]

Answer:

462 000mg

Step-by-step explanation:

1gram = 1000milligrams

Hence...462 grams...,

; 462 × 1000 = 462 000mg

3 0
3 years ago
(−10x^2+9)+(8x^2 −5x+7)
Leno4ka [110]

Answer:

-2x^2-5x+16

Step-by-step explanation:

Remove parenthesis:

-10x^2+9+8x^2-5x+7

Combine like terms:

-10x^2+8x^2-5x+9+7

= -2x^2-5x+9+7

=-2x^2-5x+16

8 0
3 years ago
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