wrote this expression on the board: 2 12 ÷ 34 She asked her students to write a word problem that could be solved using the expr
1 answer:
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Answer:
Mark's mass is 26 kg.
Step-by-step explanation:
Average mass of Jeremy, Mark and Zack = 28kg
Average mass of Jeremy and Zack = 29 kg
Let,
Jeremy's mass = x
Mark's mass = y
Zack's mass = z
Average of three of them =
28 =
x+y+z = 84 Eqn 1
x+z = 58 Eqn 2
Now putting value of x+z from Eqn 2 in Eqn 1
x + z + y = 84
58 + y = 84
y = 84 - 58
y = 26
Thereofore,
Mark's mass is 26 kg.
Answer:
Area = 153.8 cm/ m
Step-by-step explanation:
Area of circle = 22 ÷ 7 × r²
= 22 ÷ 7 × (7²)
= 22 ÷ 7 × 49
= 3.14 × 49
= 153.8 cm/ m
1. The 4 is in the thousands place
2. 50
3. <span>2,168 + 305 = 2473
4. estimate </span><span>156 + 235
160 + 240 = 400
5. </span><span>8,631 - 5,950 = 2,681
</span>6. 724 * 17 = 12,308<span>
7. 14÷6,230 = 2.25</span>×
<span>
8. 962÷ 39
960</span>÷ 40 = 24<span>
9. .7
10. 36.90
+7.35
-----------
44.25
11. 9.610
-0.268
----------
9.342
12. 419.2
x 2.54
-------------
16768
209600
838400
--------------
1064.768

13. 4</span>
(pretend sqrt sign is division sign
<span> -0
--------
12
-12
--------
</span> 08
- 8
--------
06
-4
----------
20
-20
--------
0
answer: 32.150
14. least to greatest: 0.031, 0.124, 0.31, 0.5, 1.24
15. 29.95
x 36
-----------
17970
- 89850
-----------
107820
2. 50
3. <span>2,168 + 305 = 2473
4. estimate </span><span>156 + 235
160 + 240 = 400
5. </span><span>8,631 - 5,950 = 2,681
</span>6. 724 * 17 = 12,308<span>
7. 14÷6,230 = 2.25</span>×
8. 962÷ 39
960</span>÷ 40 = 24<span>
9. .7
10. 36.90
+7.35
-----------
44.25
11. 9.610
-0.268
----------
9.342
12. 419.2
x 2.54
-------------
16768
209600
838400
--------------
1064.768

13. 4</span>
<span> -0
--------
12
-12
--------
</span> 08
- 8
--------
06
-4
----------
20
-20
--------
0
answer: 32.150
14. least to greatest: 0.031, 0.124, 0.31, 0.5, 1.24
15. 29.95
x 36
-----------
17970
- 89850
-----------
107820