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3 years ago

True True or False? 1. is true The x-axis is the horizontal line. 2. is true The y-axis is the vertical line.

1 answer:

6 0

1. True
2. True
3. True, or the origin
4. False
5. False
6. False
7. Depends on your choice
8. If they y coordinate is 0

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15PTS QUICK

lana66690 [7]

Answer:

Option B

40x + 50y = 130

5x - 4y = 16

Option C

20x + 25y = 65

-20x + 16y = 64

Step-by-step explanation:

we have

$4x+5y=13$ ----> equation a

$10x-8y=-32$ ----> equation b

we know that

If two system of equations are equivalent, then their solution is the same

Part 1)

step 1

Multiply by 10 equation a both sides

$10(4x+5y)=10(13)$

$40x+50y=130$ ----> equation a'

step 2

Divide by 2 equation b both sides

$(1/2)(10x-8y)=(1/2)(-32)$

$5x-4y=-16$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

Part 2)

step 1

Multiply by 5 equation a both sides

$5(4x+5y)=5(13)$

$20x+25y=65$ ----> equation a'

step 2

Multiply by -2 equation b both sides

$-2(10x-8y)=-2(-32)$

$-20x+16y=64$ ----> equation b'

The system of equations a and b and the system of equations a' and b' are equivalent

therefore

The system of equations a' and b' have the same solution as the given system

6 0

3 years ago

Simplify (5^3)^6 leaving your answer in index form.

Ket [755]

Answer:

5^18.

Step-by-step explanation:

By the law of indices:

(a^b)^c = a^(bc)

So (5^3)^6

= 5^(3*6)

= 5^18.

4 0

3 years ago

Simplify fully A) √9/25 B) √12/√3 C) √15/√3

yaroslaw [1]

Step-by-step explanation:

A) 45

B) 6

C) 6.7082039326

8 0

3 years ago

Read 2 more answers

Please help me latterly i posted this and no one bothered too help me plz i beg of u i really need help u have no idea i am fail

Nostrana [21]

1. An equation for income, I = 3c + 2p, where c is the number of calendars sold and p is the number of posters sold.

2. When 25 calendars and 18 posters are sold, the income is $111.

3. Income for selling 12 calendars and 15 posters is $66.

4. 3 possible combinations; 1) 30 calendars and 5 posters. 2) 20 calendars and 20 posters. 3) 10 calendars and 35 posters.

Step-by-step explanation:

Step 1; It is given that each calendar costs $3 and each poster costs $2. So if c is the number of calendars sold and p is the number of posters sold.

Total income, I = 3c + 2p.

Step 2; Now if we substitute the value of c with 25 and p with 18, we get

I = 3c + 2p = 3 (25) + 2 (18) = 75 + 36 = $111.

Step 3; If the value of p is 12 and the value of c is 15, we have

I = 3c + 2p = 3 (12) + 2 (15) = 36 + 30 = $66.

Step 4; To find combinations that cost $100, we substitute I with 100. So the equation becomes 3c + 2p = 100.

When c = 30, 3 (30) + 2p = 100, 2p = 100 - 90 = 10, 2p = 10, p =5.

When c = 20, 3 (20) + 2p = 100, 2p = 100 - 60 = 40, 2p = 40, p = 20.

When c = 10, 3 (10) + 2p = 100, 2p = 100 - 30 = 70, 2p = 70, p = 35.

4 0

4 years ago

G) You guess that your favorite basketball player would score 35 points during the game. She actually scored 28. Find your perce

Svet_ta [14]

5 percent error cause 0.000000 djjj

4 0

4 years ago