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trapecia [35]
4 years ago
5

Solve for x. Write the smaller solution first, and the larger solution second. (x−7)(−4x−2)=0

Mathematics
1 answer:
Fed [463]4 years ago
5 0
Solve for x:
(-4 x - 2) (x - 7) = 0

Split into two equations:
-4 x - 2 = 0 or x - 7 = 0

Factor constant terms from the left hand side:
-2 (2 x + 1) = 0 or x - 7 = 0

Divide both sides by -2:
2 x + 1 = 0 or x - 7 = 0

Subtract 1 from both sides:
2 x = -1 or x - 7 = 0

Divide both sides by 2:
x = -1/2 or x - 7 = 0

Add 7 to both sides:
Answer: x = -1/2 or x = 7
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Answer:

the square root of 225 is 15.9

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3 years ago
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A bag contains pennies, nickels, dimes, and quarters. There are 50 coins in all. Of the coins, 16% are pennies and 38% are dimes
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4 0
3 years ago
If Valerie deposited 12,000 into an account threat earns 15% simple annual interest how much money will she have after 3 years
Ad libitum [116K]

Answer:

The amount which she will have into account after 3 years is  17,400  unit

Step-by-step explanation:

Given as :

The principal which is deposited into an account = 12,000  unit

The rate of interest simple annual = 15%

The Time period = 3 years

Let The amount which she have after 3 years = A  unit

<u>From simple Interest method</u>

Simple Interest = \frac{Principal\times Rate\times Time}{100}

Or , Simple Interest = \frac{12,000\times 15\times 3}{100}

Or,  Simple Interest = \frac{540,000}{100}

∴    Simple Interest = 5,400  unit

Now,

Amount = Principal + Simple Interest

Or, A =  12,000  unit + 5,400  unit

∴   A =  17,400  unit

Hence The amount which she will have into account after 3 years is  17,400  unit . Answer

6 0
3 years ago
The length of the hypotenuse of a 30°–60°–90° triangle is 24. What is the perimeter?
Volgvan

Answer:

Step-by-step explanation:

6 0
3 years ago
Can someone PLEASE help me with these and I will mark brainliest!
Ber [7]

Answer:

1) = 32.02

2) = 18

Step-by-step explanation:

1) 20^2 + 25^2 = 1025

sq rt 1025 = 32.02

2) 30^2 - 24^2 = 324

sq rt 324 = 18

7 0
3 years ago
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