All categories

3 years ago

1. What is the opposite of -17

Mathematics

2 answers:

insens350 [35]3 years ago

7 0

17 is the opposite my friend.

djyliett [7]3 years ago

5 0

Answer:

Step-by-step explanation:

You might be interested in

o-na [289]

45 + 60 + y = 180
105 + y = 180
y = 75

5 0

3 years ago

A physicist working in a large laboratory has found that light particles traveling in a particle accelerator increase velocity i

frosja888 [35]

<span>The particle will reach 50km/hr when x = 35.25 hours</span>

8 0

3 years ago

Read 2 more answers

If f(x)=2x^{2} -3x+1, find f(3)-f(2)

LUCKY_DIMON [66]

F(3) = 2(3)^2 - 3(3) + 1 = 18 - 9 + 1 = 10

f(2) = 2(2)^2 - 3(2) + 1 = 8 - 6 = 2

Then f(3) - f(2) = 10 - 2 = 8 (answer)

4 0

3 years ago

Read 2 more answers

The sales price of a single family house in Charlotte is normally distributed with mean $210,000 and standard deviation $35,000.

jarptica [38.1K]

Answer:

E(X ¯)=210,000.

Step-by-step explanation:

A sampling distribution for samples of size n=49 from a population with means μ=210,000 and standard deviation σ=35,000, has the following means anda standard deviation:

$\mu_s=\mu=210,000\\\\\sigma_s=\sigma/\sqrt{n}=35,000/\sqrt{49}=35,000/7=5,000$

If X ¯ is the mean sales price of the sample, it will have a mean value of E(X ¯)=210,000.

6 0

3 years ago

Can I get some help on these please

torisob [31]

Simply multiply the equation by 6, in order to get rid of the denominators:

$\dfrac{x}{2}+\dfrac{y}{3} = 4 \iff 3x+2y=24$

We have to rearrange the equation in the form

$(x-x_0)^2+(y-y_0)^2=r^2$

So that $r$ is the radius, and $2r$ will be the diamater. We have to complete the squares: rewrite the equation as

$x^2-6x+y^2+8y=144$

You can see that $x^2-6x$ is the beginning of $x^2-6x+9 = (x-3)^2$

Similarly, $y^2+8y$ is the beginning of $y^2+8y+16 = (y+4)^2$

So, if we add 16 and 9 to both sides, the equation becomes

$x^2-6x+9+y^2+8y+16=144+9+16 \iff (x-3)^2+(y+4)^2=169$

So, now we know that $r^2=169$ , and thus the radius is 13, so the diameter is 26.

3 0

4 years ago