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PolarNik [594]
3 years ago
9

Is the graph of 4x + 5y = a line? Explain.

Mathematics
1 answer:
malfutka [58]3 years ago
8 0

Answer:

Step-by-step explanation:

4x + 5y = 0 means : y=(-4/5)x

is the line passes by O(0 ; 0) when the slope is -4/5

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Drag the coordinates to match the coordinates of each point on the left with the coordinates of its reflection across the x-axis
fredd [130]

Answer:

1. (-2,-7)

2. (3,-9)

3. (7,-2)

4.(-3,9)

Step-by-step explanation:

Since the reflection is across the x-axis, the y-coordinate will be flipped.

Example: (-7,4) would become (-7,-4)

HOWEVER, if the reflection is across the y-axis, the x coordinate will be flipped.

Example: (-7,4) would become (7,4)

6 0
2 years ago
Read 2 more answers
Simplify expression 3(d+5)
steposvetlana [31]

Answer:

your answer would be 21

~hope this is the right answer, have a great day/night~

Step-by-step explanation:

6 0
3 years ago
Please help? I'm. terrible at these
kykrilka [37]
13.5 = 30% of 45
4.5 = 15% of 30
4.6 = 23% of 20
4.2 = 60% of 7

Hope this helps!!
3 0
3 years ago
Find the volume of a cylinder with a radius of 4 in and a height that is 3 times the radius
german

Answer:

Volume of a cylinder: V = π * r² * h ,

Base surface area of a cylinder: A_b = 2 * π * r² ,

Lateral surface area of a cylinder: A_l = 2 * π * r * h ,

Total surface area of a cylinder: A = A_b + A_l ,

Step-by-step explanation:

So, when the radius is tripled, the volume will be 3 squared = 9 times than the previous one.

8 0
2 years ago
Read 2 more answers
NEED HELP RN!!!!!
Kazeer [188]

Answer:

4(2n-5)

Step-by-step explanation:

So we know Valerie has 5 less than double the number of brad's books. Brad has n books, so make that 2n to double it.

Because she has 5 less than that, the expression is now 2n-5. The is the total of Valerie's books.

We know that Brad has 4 times the number of Valerie's books, so just multiply that expression by 4.

The final answer is 4(2n-5).

You're welcome. :)

4 0
3 years ago
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