MATHEMATICS
HIGH SCHOOL

y=

x=

Answer: Use elimination method (add equations together).

-5y-10x-3y+10x=45-5

-8y=40

y=-5

Plug this value into one of the first equations.

-3(-5)+10x=-5

15+10x=-5

10x=-20

x=-2

Final answer: (-2,-5)

-5y-10x-3y+10x=45-5

-8y=40

y=-5

Plug this value into one of the first equations.

-3(-5)+10x=-5

15+10x=-5

10x=-20

x=-2

Final answer: (-2,-5)

Answer: The answers are -2 and -5

MIDDLE SCHOOL

Is this statement true 65.023>65.23?

Answer:

No

Step-by-step explanation:

the first one would be 65 and 23/1000, while the other one is 65 and 23/100

MIDDLE SCHOOL

A bill cost $45.80. They leave a 20% tip. How much should they leave for tip?

Find 20% of 45.80

0.20 * 45.8 = 9.16

So they should leave $9.16 for the tip.

0.20 * 45.8 = 9.16

So they should leave $9.16 for the tip.

45.80 multiply by 0.20 equals 9.16

MIDDLE SCHOOL

zahra cuts a loaf of bread into 5 equal pieces she then cuts each piece into 3 equal slices what fraction of the whole loaf is one slice of bread

One slice of bread would be 1/15

MIDDLE SCHOOL

A box contains 30 radio chips of which 10 are defective. If 7 chips are picked at random out of the box randomly, what is the probability that at least 8 are defective? Needs to show all work.

Answer the chace is 50%

Step-by-step explanation:

because if you defined it then simplify it u get 50

Answer my question first

if one ratio is given find all other find sin30+cos30?