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2 years ago

Solve the equation x=x+3

Mathematics

2 answers:

borishaifa [10]2 years ago

8 0

$x=x+3\ \ \ \ \ \ |subtract\ x\ from\ both\ sides\\\\0=3-FALSE\\\\no\ solution\ (x\in\O)$

fomenos2 years ago

7 0

$x=x+3\\
0=3\\
x\in\emptyset$

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The diameter of a circle is 16 kilometers.What is the circle's circumference?

qaws [65]

The equation to find the circumference of a circle is ...

c = π × d

All we need to do to find circumference is to multiply the diameter (16km) by pi (π)

c = π × 16

c = 50.27

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2 years ago

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What are the zeros of the parabola whose equation is y = x2 + 8x + 15

Sedbober [7]

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Answer:

(1) -5 and -3

Step-by-step explanation:

Descarte's rule of signs tells you the lack of sign changes among the coefficients means there are no positive real roots. That eliminates all answer choices except the first one.

If you want to go to the trouble, you can factor the equation:

y = (x +3)(x +5)

These factors are zero when x = -5 and x = -3.

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2 years ago

Q # 4 anybody help me please

Marysya12 [62]

Answer

-5/3, -1, 0.7, √2, √5

Explanation

√5 = 2.236

-1 ⇒ this is less than 1.

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0.7 > -1

√2 = 1.414 ⇒ √5 > √2

Arranging them from the least to the greatest;

-5/3, -1, 0.7, √2, √5

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2 years ago

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weqwewe [10]

Answer:

Step-by-step explanation:

The lady gets paid $8 per hour that the shop is opened, so multiply the pay rate ($8) by the amount of hours the shop is opened
$8 * 8 = $64

Now add the $64 onto the expense of running the shop

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1 year ago

The business college computing center wants to determine the proportion of business students who have personal computers (PC's)

Anastasy [175]

Answer:

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Step-by-step explanation:

We are given the following in the question:

Sample size, n = 250

p = 30% = 0.3

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Number of women belonging to union , x = 75

First, we design the null and the alternate hypothesis

$H_{0}: p = 0.3\\H_A: p > 0.3$

This is a one-tailed(right) test.

Rejection Region:

$z_{critical} \text{ at 0.05 level of significance } = 1.645$

So, the rejection region will be

$z > 1.64$

That is we will reject the null hypothesis if the calculated z-statistic is greater than 1.645

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2 years ago