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Yuri [45]
3 years ago
12

A molecule of sodium carbonate contains 2 atoms of sodium to every 3 atoms of oxygen. Could a compound containing 12 atoms of so

dium and 15 atoms of oxygen be sodium carbonate ? Explain
Mathematics
1 answer:
lys-0071 [83]3 years ago
7 0
Ask this question in the science category xoxo
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Which expression can be used to find the value of the expression below? (7/10) + 2/8 + 1/10 - (4/8)
kvv77 [185]

Answer:

74

Step-by-step explanation:

3 0
3 years ago
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Which would not be a step in solving 18= 24(4+x)?
sweet [91]

Answer:

doop

Step-by-step explanation:

5 0
3 years ago
Susie scored 85, 84,and 78 on three of the four math tests. if her average score for the four tests was 86. what was her score o
nata0808 [166]
(85 + 84 + 78 + x) / 4 = 86
(247 + x) / 4 = 86
247 + x = 86 * 4
247 + x = 344
x = 344 - 247
x = 97 <=== her score was 97
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3 years ago
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a water balloon is tossed into the air with an upward velocity of 25 ft/s its height h(t) in ft after t seconds is given by the
Montano1993 [528]
When the height is 0 that is when it hits the ground
solve
0=-16t²+25x+3
cant factor so use quadratic formula

for
0=ax²+bx+c
x=\frac{-b+/-\sqrt{b^2-4ac}}{2a}

so for
0=-16t²+25t+3
a=-16
b=25
c=3
so

x=\frac{-25+/-\sqrt{25^2-4(-16)(3)}}{2(-16)}
x=\frac{-25+/-\frac{625+192}}{-32}
x=\frac{-25+/-\frac{817}}{-32}
it has to be a positive time

so it will hit the ground after \frac{25+\sqrt{817}}{32} seconds
4 0
2 years ago
Jeffery is wrapping a box. the dimensions of the box are shown. What is the surface area of the box
Schach [20]

Answer: 232

Step-by-step explanation:

Surface area = everything multiplied x 2

3 0
2 years ago
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