2 years ago

Can some one help will give brainliest

Mathematics

1 answer:

Cloud [144]2 years ago

8 0

Answer:

yeah pretty sure it's D. B

You might be interested in

You purchase a lottery ticket for $2 from a grocery store. There are a total of 100,000 tickets in circulation. The grand prize

FrozenT [24]

I'm pretty sure its B but I would double check before you put the answer in :)

8 0

2 years ago

Jamie took an 8-week keyboarding class. At the end of each week, she took a test to find the number of words she could type per

Bingel [31]

She improved about 4.3 words per min each week

6 0

3 years ago

Jean runs 8 mi and then rides 11 mi on her bicycle on a biathlon. She rides 9 mph faster than she runs. If the total time for he

Ipatiy [6.2K]

Let Jean's speed while running = x mph

Then Jean's speed while riding will be = x+9 mph

Distance covered by running = 8 miles

Distance covered by riding = 11 miles

Total time taken to complete the race = 1.5 hours

As, $time=\frac{distance}{speed}$

So, time for running= $\frac{8}{x}$

And time for riding= $\frac{11}{x+9}$

Equation becomes:

$\frac{8}{x}+\frac{11}{x+9}=1.5$

Now, multiply every term by 2x(x+9) to clear denominators:

$16(x+9)+22x=3x(x+9)$

Simplifying it we get

$3x^{2}-11x-144=0$

Solve the quadratic equation using formula

$x= \frac{-b+\sqrt{b^{2}-4ac }}{2a}$

putting a=3 , b= -11, c= -144

we get (x - 9)(3x + 16) = 0

where x=9 and x= $\frac{-16}{3}$

Neglect the negative answer as speed cannot be negative, so x = 9 mph

Hence, Jean's running speed is 9 mph and riding speed is x+9 = 9+9 = 18 mph

4 0

3 years ago

Which function does not have a vertical asymptote

Gemiola [76]

Answer:

$y=\frac{5x}{1+2x^2}$

Step-by-step explanation:

$Option ~A ~ does ~ not ~ have ~a ~ vertical~ asymptote$

--------------------------

Hope it helps...

Have a great day!!

8 0

3 years ago

Wats 200 + 142 Only genius can answer this!!! Lol

attashe74 [19]

Answer:

342

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers