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3 years ago

The solution x + b > -14 is x > -21. What is the value of x?

Mathematics

1 answer:

Morgarella [4.7K]3 years ago

8 0

Answer:

b=+7

Step-by-step explanation:

Because when you choose -7

you will get it another side pos+

That's a mistake.

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If s = 1 over 3 unit and A = 18s2, what is the value of A, in square units? ____ square unit(s). (Input whole number only.)

arsen [322]

S= $\frac{1}{3}$
A=18 $s^{2}$
A=18*( $\frac{1}{3 )^{2} }$
A=2

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3 years ago

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True or false y4 equals 16 if y is 2.

enyata [817]

False, y4 would equal 8 if y=2

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Whats the radius for the circle? x^2+2x+y^2+4y-6=0

MAXImum [283]

Answer:

r = $\sqrt{11}$

Step-by-step explanation:

So we need to complete the square for both parts of the equation

First though we can add the 6 to the other side so we have x² + 2x + y² + 4y = 6

So first we can complete the square for x² + 2x

To do so we need to use $(\frac{b}{2} )^{2}$ to figure out the number we need to add to both sides

In this case our b is 2, so substituting this in we get $(\frac{2}{2} )^{2} =(1)^{2} =1$

Here we add 1 to both sides and now we have x² + 2x + 1 + y² + 4y = 6 + 1

Now we can follow the same steps to complete the square for y² + 4y

Here our b is 4, so substituting this in we get $(\frac{4}{2} )^{2}=(2)^{2} =4$

Now we add 4 to both sides and now we have x² + 2x + 1 + y² + 4y + 4 = 6 + 1 + 4

Now condensing everything we have (x + 1)² + (y + 2)² = 11

The formula for a circle is (x - h)² + (y - k)² = r²

In our equation we have r² = 11

To find the radius we need to take the square root of both sides $\sqrt{r^{2}} =\sqrt{11}$ to get r = $\sqrt{11}$

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3 years ago

Find an expression for the nth term -3 , 2 , 7, 12

slavikrds [6]

Answer:

5n-8

Step-by-step explanation:

Because this is an arithmetic progression, there is simply an addend that is being added to every number. Because that is 5, the expression, for now, would be 5n. However, the progression does not start at 0, so we will have to subtract 3, and then it would be 5n - 3. We're still not at the answer; this is because the first term starts at 1, not 0. We will have to account for that, so subtract the coefficient, or 5, from the whole expression. That would be 5n - 8, and that would be the answer.

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3 years ago

What is the value of 0.5 + 0.3? Write your answer as a fraction in lowest terms.

Nikitich [7]

Answer:

4/5

Step-by-step explanation:

=.8

.8 into a fraction is 4/5

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3 years ago

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