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Semmy [17]
3 years ago
6

Solve the system by graphing -x + 4y =-2 -2x+5y =-4

Mathematics
1 answer:
GrogVix [38]3 years ago
3 0

Graph the equations first, and then locate the intersection.

(2, 0)

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For the following exercises, determine whether each of the following relations is a function.
RSB [31]

Answer:

The relation {(2,1),(3,2),(-1,1),(0,-2)} is a function because the domain {2,3,-1,0} and range {1,2,1,-2} of the relation is paired exactly only once.

Step-by-step explanation:

The given relation is {(2,1),(3,2),(-1,1),(0,-2)}.

It is required to determine the relation is a function.

Step 1 of 1

The given relation is {(2,1),(3,2),(-1,1),(0,-2)}.

This relation shows that the domain of the relation {2,3,-1,0} is paired with one element of the range {1,2,1,-2}.

Hence, the relation is a function.

7 0
2 years ago
PLEASE ANYBODY HELP ME PLEASE I BEG OF YOU!!! PLEASE WILL GIVE BRAINLIEST
muminat

Answer:

Paper route earnings each week=($87.8-$37.8) / 10 =$5

If $5=20% we have to find how money is the 100%.

$5-----------------20%

x------------------100%

x=($5*100%) / 20%=$25

solution: $25.00

Step-by-step explanation:

5 0
3 years ago
Yes or no 2 problems below giving brainlest
astra-53 [7]

Answer:

Problem 13: yes

Problem 14: no

Step-by-step explanation:

Problem 13:

Plug the values of x and y to solve.

-23 = -7(5) + 12

-23 = -35 + 12

-23 = -23

The values are equal, so the coordinates <u>do</u> solve the equation. It's a yes.

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

Problem 14:

Plug the values of x and y to solve.

-9 = -7(-3) + 12

-9 = 21 + 12

-9 = 33

The values are not equal, so the coordinates <u>do not</u> solve the equation. It's a no.

hope this helps :)

8 0
3 years ago
What is the opposite of 3 over 4
Hoochie [10]

Answer:

Step-by-step explanation:

Explanation: There is nothing known as opposite in algebra. If you mean additive inverse it is 34 and if you mean multiplicative inverse or reciprocal it is −43 . multiplicative inverse, also called reciprocal, is the number which when multiplied with the number results in 1 , the multiplicative identity element.

6 0
3 years ago
Read 2 more answers
Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 90 pounds of algae, how much al
eimsori [14]
If it doubles every 4 hours, in 12 hours you will have 3 doublings.
2 * 2 * 2 = 8
90*8 = 720 pounds of algae

7 0
3 years ago
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