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vesna_86 [32]
2 years ago
10

Need help with question 3, 8, 13, 15, 17, 18

Mathematics
1 answer:
antoniya [11.8K]2 years ago
8 0

Answer:

18. 8x+40

8. 2hours 30 minutes

Step-by-step explanation:

8. 8x2= 16

8 divided by 2 is 4

4+16= 20

4mph = 30 minutes

8mph = 1 hour

8+8+4= 2 hours and 30 minutes

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The input-output table shows and values that satisfy the equation Y= 4X +21
Hunter-Best [27]
Answer: 41

Explanation: Use the equation. If you put the x value, which is 5, into the equation, you can solve.

4(5)+21

4 x 5 is 20

20+21=41

hope this helps!!
7 0
2 years ago
What is the equation of the circle that has a center at (-3, 1) and a radius of 5? A) (x + 3)2 + (y - 1)2 = 5 B) (x - 3)2 + (y +
Gnoma [55]

Answer:

C

Step-by-step explanation:

The vertex form of the equation of a circle is (x-h)^2 + (y-k)^2 = r^2 where (h,k) is the center of the circle and r is the radius. This means that for the circle with center (-3,1) and radius 5 substitute into the vertex form these values. Substitute h = -3, k= 1, and r = 5. The equation becomes (x--3)^2 + (y-1)^2 = 5^2. This simplifies to (x+3)^2 + (y-1)^2 = 25. The solution is C.

7 0
2 years ago
PLEASE HELP ASAP WILL MARK BRAINLIEST, SIMPLE MATH PROBLEM
Blizzard [7]

Answer:

12

Step-by-step explanation:

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8 0
3 years ago
NEED HELP FAST!!!!!
slava [35]
5p-4p-8=-2+3

Combine like terms
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8 0
3 years ago
Read 2 more answers
FINAL DUE IN 30 MINUTES: the equation 2y + x = 0 is shown on the graph below as a
julia-pushkina [17]

Answer:

Red line

Step-by-step explanation:

2y+x=0

2y=-x

y=-x/2

Put the equation into y=mx+b so you would need to subtract the x to put it on the right side so then you’ll have 2y=-x+0 then divide by 2 to get the y by itself then you’ll have y=-2x+0 that means the line would be negative and the y-intercept is 0 and the only line that follows that is the red line.

6 0
1 year ago
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