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MissTica
4 years ago
14

Write an expression that can be used to find 4 *275 using mental math and properties of numbers.

Mathematics
1 answer:
Nadya [2.5K]4 years ago
8 0
275+275+275+2751=1100
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2.8 in fractional notation
Tcecarenko [31]
.28 if 1 was 100,and .28 was 2.8, then we divide 100 by 100 same for 2.8
6 0
4 years ago
Reena has 12 more dimes than she does quarters. If Reena has a total of 28 coins, how many quarters, qq, and how many dimes, dd,
erastovalidia [21]
Q = d - 12
q = 28 - d

d - 12 = 28 - d
d + d = 28 + 12
2d = 40
d = 40/2
d = 20 <== 20 dimes

q = d - 12
q = 20 - 12
q = 8 <== 8 quarters

5 0
4 years ago
Find the distance between the origin and the point (10,45,57)
Marina86 [1]

Answer:

Step-by-step explanation:

3D space  (x, y, z)  = (10, 45, 57)

I will use  x² + y² = (2D Hyp)²  and (2D Hyp)² + z² = (3D Hyp)²

which is just x² + y²  + z² = (3D Hyp)²

10² + 45²  + 57² = (3D Hyp)²

100 + 2025 + 3249    =  5374   =   (3D Hyp)²    the destance from the origin

                                                   =  73.31    the destance from the origin

3 0
3 years ago
Can someone help me with this please?!?!
loris [4]

Answer:

7

Step-by-step explanation:

8 0
4 years ago
Help me please thank you so much !!
mash [69]

this one would also be the third option

5 0
3 years ago
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