3 years ago

Please help me with this.

Mathematics

1 answer:

ipn [44]3 years ago

8 0

-5yards+-8yards=-13yards

You might be interested in

Mandarinka [93]

Answer:

2.69 maybe not so sure ..

8 0

3 years ago

00:00

rusak2 [61]

Answer:

I thinks no for all except the last one.

6 0

3 years ago

30 tens - 3 tens 3 tenths

lubasha [3.4K]

300-30.3=269.7 because you barrow from 3 in 300 because you can't round into 0 and that equalled 7 and than you do 9-0=9 and there's 009.7 than you do 9-3=6 and that's 069.7 and you do 2-0=2 and there's 269.7

4 0

3 years ago

The solution for n-6/3n=n-5/3n+1

Paladinen [302]

I'm pretty sure the answer is -3

5 0

3 years ago

Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

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

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

$x=\frac{8\pm\sqrt{784}} {4}$

$x=\frac{8\pm28} {4}$

$x=\frac{8+28} {4}=9$

$x=\frac{8-28} {4}=-5$

therefore

The solutions are x=-5, x=9

6 0

3 years ago