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Zepler [3.9K]
3 years ago
10

Given: 2x + 30 = -4(5x -2); Prove: x = -1

Mathematics
1 answer:
Lady_Fox [76]3 years ago
6 0
2x + 30 = -20x + 8
2x + 20x = 8 - 30
22x = -22
x = 1
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Answer 20 are left

Step-by-step explanation:

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3 years ago
Jai Narayan sells two radio sets for 2288 each.
san4es73 [151]

Answer:

1%

Step-by-step explanation:

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By using the formula

C.P of one radio=\frac{2288\times 100}{110}=$2080

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Total C.P of two radios=2080+2542.2=$4622.2

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Loss%=\frac{Loss}{C.P}\times 100

Loss %=\frac{46.2}{4622.2}\times 100=1%

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5 0
3 years ago
If y=a sin 3x+ b cos 3x and <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bd%5E%7B2%7D%20y%20%7D%7Bdx%5E%7B2%7D%20%7D" id="TexFormu
Black_prince [1.1K]

Step-by-step explanation:

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Next, you have to compare it :

let d²y/dx² = ky,

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3 years ago
The 8 red markers in a package account for 4% of all markers in the package. How many markers are in the package?
Vlad [161]

Answer:

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