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sasho [114]
3 years ago
5

Solve for x √2x=4√5 A. X=5√2 B. X=8√5 C. X=10 D. X=40

Mathematics
1 answer:
joja [24]3 years ago
7 0

Answer: A

Step-by-step explanation: 2x=4/5

Divide both sides by 2

2x/2= 4/5/2

simplify

x=5/2

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A dog weighs 2 pounds less than 3 times the weight of a cat. The dog weighs twenty two more pounds than the cat
Nesterboy [21]

Complete Question

A dog weighs 2 pounds less than 3 times the weight of a cat. The dog weighs twenty two more pounds than the cat.

Write and solve an equation to find the weights of the cat and the dog.

Answer:

Weight of cat = x = 12 pounds

Weight of Dog = y = 34 pounds

Step-by-step explanation:

Let's represent:

Weight of cat = x

Weight of Dog = y

A dog weighs 2 pounds less than 3 times the weight of a cat.

y = 3x - 2........ Equation 1

The dog weighs twenty two more pounds than the cat

y = x + 22....... Equation 2

The equation is given as:

y = y

3x - 2 = x + 22

Collect like terms

3x - x = 22 + 2

2x = 24

x = 24/2

x = 12 pounds

Solving for y using any of the equations:

y = 3x - 2

y = 3 × 12 - 2

y = 36 - 2

y = 34 pounds

Therefore:

Weight of cat = x = 12 pounds

Weight of Dog = y = 34 pounds

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3 years ago
Please tell me what 0.85 = a/-7.2 is. thanks
attashe74 [19]

Your answer would be a=-6.12

6 0
3 years ago
HELP PLEASE! What’s the domain and range?
NeX [460]

Answer:

Domain → (-∞, -1)∪(-1, ∞)

Range → (-∞, ∞)

Step-by-step explanation:

Given function is,

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This function is not defined when the denominator is zero.

2x + 2 = 0

2x = -2

x = -1

Therefore, x = -1 is not in the domain of this function.

And the domain will be,

(-∞, -1)∪(-1, ∞)

For all values of x (except x = -1) we get some output values (value of \frac{f(x)}{g(x)}).

Therefore, range of the function will be (-∞, ∞).

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Elan Coil [88]

Answer:

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8 0
2 years ago
Simplify the expression:<br> 7r2+5r2+9r
jenyasd209 [6]

Answer:

9r+7r+9r

Step-by-step explanation:

4 0
3 years ago
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