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Ksivusya [100]
3 years ago
15

Good at math & need points? help!!

Mathematics
1 answer:
olga2289 [7]3 years ago
8 0

Answer:

D

Step-by-step explanation:

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Bill spends two days driving from Point A to Point B . On the first day, he drove 2 hours longer and at an average speed 5 miles
Rainbow [258]

Answer:

His average speed on the second day is 35 miles per hour.

Step-by-step explanation:

Consider the provided information.

On first day, he drove 2 hours longer than he drove on second day.

Let x = Number of hours he drove on second day.

Then x + 2 = Number of hours he drove on first day.

It is given that he drove a total of 18 hours.

Therefore,

x + (x + 2) = 18

2x + 2= 18

x=8

He drove 8 hours on second day.

x + 2 = 8+2=10

He drove 10 hours on first day.

Let y = speed driven on second day.

y + 5 = speed driven on first day.

As we know: Distance = speed × time

On first day he covers a distance of:

Distance = 10(y+5)

On second day he covers a distance of:

Distance = 8(y)

Total distance = Day 1 distance + Day 2 distance

10(y+5) + 8(y) = 680\\10y+50+8y=680\\18y=630\\y=35

Hence, his average speed on the second day is 35 miles per hour.

6 0
3 years ago
Hurry ASAP) Graph the system of equations. f ( x) = x^2 - 5x + 7 and g(x)=2x + 1. Which statements are true about the solutions
N76 [4]

Answer:

Options (2), (4) and (6)

Step-by-step explanation:

Given system of equations is,

f(x) = x² - 5x + 7

g(x) = 2x + 1

By equating both the functions,

f(x) = g(x)

x²- 5x + 7 = 2x + 1

x² - 5x - 2x + 7 - 1 = 0

x² - 7x + 6 = 0

x² - 6x - x + 6 = 0

x(x - 6) - 1(x - 6) = 0

(x - 1)(x - 6) = 0

x = 1, 6

For x = 1,

g(x) = 2x + 1

g(1) = 2(1) + 1

     = 3

For x = 6,

g(6) = 2(6) + 1

      = 13

Common points (solutions) of both the functions 'f' and 'g' are (1, 3) and (6, 13).  

Both the solutions lie in quadrant 1.

x-coordinate of the solution (1, 3) is x = 1.

y-coordinate of the solution (1, 3) is y = 3.

Therefore, options (2), (4) and (6) are the correct options.

7 0
3 years ago
Which graph represents the solution set for -2x + 3 ≥ 7 or 5x - 1 ≥ 9?
sveticcg [70]
The answer is do it yourself m8
8 0
3 years ago
Please help asap!! i’ll give brainlist if right.
r-ruslan [8.4K]

Answer:

dogs = 2

cats = 80

Step-by-step explanation:

Here I will assume that cats and dogs are proportional

c = y d, if you substitue, you get

10 = y 4, which rearranged, becomes

y = 10/4 = 2.5

now that we know y, we can work out x and y, the missing dogs and cats

4 = 2.5 d

here, dogs = 2

c = 2.5 * 32

2.5 * 32 = 80

here, cats = 80

8 0
2 years ago
What is the length of the hypotenuse of the triangle?
Alecsey [184]

Answer:

C 9\sqrt{2}

Step-by-step explanation:

5 0
3 years ago
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