All categories

3 years ago

-5x - 8y = 17 2x - 7y = -17

Mathematics

1 answer:

Mrac [35]3 years ago

4 0

Answer:

x = -5

y = 1

Step-by-step explanation:

-5x - 8y = 17

x = -5

y = 1

2x - 7y = -17

x = -5

y = 1

You might be interested in

The discriminate of a quadratic is given as b² - 4ac is equal to 0. Select the best description below.

zzz [600]

Answer:

2) the quadratic has one x intercept

Step-by-step explanation:

D = 0 => has twin quadratics as one x intercept

8 0

3 years ago

Factor the algebraic expression below in terms of a single trigonometric function. sin 2x + sin x - 2

Pie

Answer:

The factored form is (sin x +2)(sin x-1)

Step-by-step explanation:

We have been given the trigonometric function $\sin^2 x +\sinx-2$

We can factor this by AC method. In AC method we multiply the term a and c and then write the middle term b in such a way that the sum/difference is equal to the product 'ac'

Using the method, we can write sinx as 2sinx -sinx

$\sin^2 x +2\sinx-\sin x-2$

Now, we group the first two terms and the last two terms

$(\sin^2 x +2\sinx)+(-\sin x-2)$

Now, we take GCF from each group

$\sin x(\sin x +2)-1(\sin x+2)$

Factor out (sinx+2)

$(\sin x +2)(\sin x-1)$

Therefore, the factored form is (sin x +2)(sin x-1)

7 0

3 years ago

Read 2 more answers

How do you find pi?

atroni [7]

to calculate pi you can use the Nilakantha Series.

4 0

3 years ago

C represents the commission on her sales.

vlabodo [156]

First simplify the expression.
1/3(1,650+0.15c)
550+0.05c
Answer is A
Hope this helps!

3 0

3 years ago

Elena needs to find a table that will fit three cube-shaped cases, each containing a frog.

iVinArrow [24]

The area of the table is 3.75 feet
The boxes are .83333 feet by .83333 feet so that area is .69
.69x3 is 2.07 so yes they will fit on top of the table

6 0

4 years ago