All categories

3 years ago

Please help with the bonus. I beg

Mathematics

1 answer:

salantis [7]3 years ago

8 0

Answer:

8-8/8+8

Step-by-step explanation:

answer = 8-8/8+8

= 8-1+8

= 7+8

= 15

You might be interested in

Haley's work evaluating (-2) is shown below.

iren [92.7K]

Answer: she made a sign error when multiplying and should have had 256 as a final answer

Step-by-step explanation:

When multiplying negatives, it you multiply an even number of negatives, the answer is a positive. And vise versa.

6 0

4 years ago

a car travels 120 mi. a second car, travelling 10 mph faster than the first car, makes the same trip in 1 hr less time. find the

Murrr4er [49]

Let x be the speed of the first car, then (x + 10) is the speed of the second car.

We can write the equation by the condition of the problem:

$\frac{120}{x}- \frac{120}{x+10}=1 \\ 120(x+10)-120(x)=1(x)(x+10) \\ 120x+1200-120x=x^2+10x \\ x^2+10x-1200=0 \\ D=b^2-4ac=10^2-4*1*(-1200) = 100+4800 = 4900 \\ x_{1,2}= \frac{-bб \sqrt{D} }{2a} \\ \\ x_1= \frac{-10- \sqrt{4900} }{2}= \frac{-10-70}{2} = -\frac{80}{2}=-40 \ \ \ \O$

$x_2= \frac{-10+ \sqrt{4900} }{2}= \frac{-10+70}{2} = \frac{60}{2}=30$ mph speed of the first car

Then 30+10=40 mph speed of the second car

Answer: 30mph and 40 mph.

I hope this helps.

8 0

4 years ago

Find the value of x and y in the diagram below.

defon

Answer:

Step-by-step explanation:

cos 30 = 9/x

x = 9/( $\sqrt{3}/2$ ) = 6 $\sqrt{3}$

(6 $\sqrt{3}$ )² - 9² = x²

x² = 27

x = 3 $\sqrt{3}$

7 0

3 years ago

HELP KE PLEASE HELP I NEED HELP

Lelechka [254]

Answer:

(3,2)

Step-by-step explanation:

The vertex is where the two rays meet at a point

The vertex is at x=3 and y =2

(3,2)

4 0

3 years ago

Write an expression that shows how to use the halving and doubling strategy to find 28 x 50

alex41 [277]

=1,400 because i worked the problem out

3 0

4 years ago