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valkas [14]
3 years ago
5

30% of what number is 70

Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
233 1/3

you start with .3x = 70, as this is the sentence given, solving for x.
divide both sides by .3, and you get x
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A) Goats that weigh exactly 50 or 60 pounds fall into two classes.
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3 0
3 years ago
Solve by completing the square. Round<br> x^2-4x=5
Novosadov [1.4K]

Answer: -1 and 5.

Step-by-step explanation:

x - 4x = 5 : Move the constant to the left.

x^2 - 4x - 5 = 0 : Rewrite the expression.

x^2 + x - 5x - 5 = 0 : Factor the expressions.

x(x+1) - 5(x+1) = 0 : Factor the expression.

(x+1)(x-5) = 0 : Seperate into possible cases.

x + 1 = 0, x - 5 = 0 : Solve the equations.

x = -1, x = 5 : The equation has 2 solutions.

8 0
2 years ago
Help please. Having some trouble with this question
xeze [42]

Answer:

The answer to your question is 55 ft

Step-by-step explanation:

Data

Person's height = 5 ft

Person's shadow = 10 ft

Tree's height = ?

Tree's shadow = 110 ft

- Use the Thales' theorem to solve this problem

 Person's height / Person's shadow = Tree's height / Tree's shadow

- Substitution

                     5 / 10 = x / 110

-Solve for x

                     x = 5 (110) / 10

-Simplification

                     x = 550 / 10

-Result

                     x = 55 ft

-Conclusion

The tree is 55 ft height

5 0
2 years ago
Need help please<br> please use the image below to answer
spayn [35]

Answer:

Step-by-step explanation:

C and D answers look good

6 0
3 years ago
HELP
fgiga [73]

Answer:

E

Step-by-step explanation:

5 0
2 years ago
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