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stepan [7]
3 years ago
7

(2×n)×4=2×(3×4)n=3 Find the value of n

Mathematics
1 answer:
zaharov [31]3 years ago
3 0

Answer:

n=-12

Step-by-step explanation:

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Joseph tweets 13 times aa day. Define each variable and write an algebraic expression to describe the number of posts after any
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13x

Hope this helps!

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This morning, Carmen's car had 29.03 gallons of fuel. Now, 2.9 gallons are left. How much fuel did Carmen use?
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Step-by-step explanation:

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How tall is the flagpole?<br> X<br> 6 ft<br> 15 ft<br> 4.5 ft
sweet-ann [11.9K]

Answer:

x = 20 ft

Step-by-step explanation:

We can use similar triangles and ratios to solve

4.5 ft         6 ft

--------- = ---------------

15 ft             x ft

Using cross products

4.5x = 15*6

4.5x =90

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3 years ago
How many different ways can a president and vice president be selected from a class of 22?
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3 years ago
Read 2 more answers
Layla emptied out her change jar to buy a new binder for school. She found 147 coins consisting of dimes and nickels that totale
den301095 [7]

Answer:

d + n = 147

0.10d + 0.05n = 11.65

d = 86, n = 61

Step-by-step explanation:

Let

Number of dimes = d

Number of nickels = n

Total coins = 147

Total value = $11.65

d + n = 147 (1)

0.10d + 0.05n = 11.65 (2)

From (1)

d = 147 - n

Substitute d = 147 - n into

0.10d + 0.05n = 11.65

0.10(147 - n) + 0.05n = 11.65

14.7 - 0.10n + 0.05n = 11.65

- 0.10n + 0.05n = 11.65 - 14.7

-0.05n = -3.05

n = -3.05 / -0.05

= 61

n = 61

Substitute n = 61 into

d + n = 147

d + 61 = 147

d = 147 - 61

d = 86

6 0
3 years ago
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