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tester [92]
3 years ago
13

Johnathan can jog 3 2/5 miles in 7/8 hour. Find his average speed in miles per hour???

Mathematics
1 answer:
Allisa [31]3 years ago
8 0
Your speed is 3.9 miles per hour
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Find four consecutive even integers such that seven times the first exceeds their sum by 18.
Ganezh [65]

Answer:

10, 12, 14, 16

Step-by-step explanation:

Given: Four consecutive even integers such that seven times the first exceeds their sum by 18.

Lets assume the first number be "x".

As it is even integers

∴ Second consecutive number will be (x+2)

  Third consecutive number will be (x+4)

  Fourth consecutive number will be (x+6)

Now, as given seven times the first exceeds their sum by 18.

∴ [x+(x+2)+(x+4)+(x+6)]+18 = 7x

solving the equation to find the number.

⇒ [x+(x+2)+(x+4)+(x+6)]+18 = 7x

Opening parenthesis

x+x+2+x+4+x+6+18 = 7x

⇒ 4x+30= 7x

subtracting both side by 4x

⇒ 30= 3x

Dividing both side by 3

∴ x= 10.

Hence, subtituting the value x to find four consecutive even integers.

  First number is 10

  Second consecutive number will be (10+2) = 12

  Third consecutive number will be (10+4)= 14

  Fourth consecutive number will be (10+6) = 16

∴ Four consecutive even integers are 10,12,14,16.

8 0
3 years ago
WILL MARK BRAINLIEST!! please answer all questions
lana66690 [7]

Answer:

1a) −24x^4−52x^3+198x^2+126x−325

2a) 14x^2+7x−41

3a) 30x^3+9x^2+32x−7

Step-by-step explanation:

7 0
3 years ago
2 5/12 x 2 2/3<br><br> pls helpp
MA_775_DIABLO [31]

Answer: 58/9

Step-by-step explanation:

5 0
3 years ago
Find the exact value of sin 10pi/3
guajiro [1.7K]

Answer:

− √ 3 /2  or -0.86602540 ...

Step-by-step explanation:

4 0
3 years ago
Find the average rate of change of f(x)=-x^2+2x+2 from x=2 to x=6. Simplify your answer as much as possible.
Eduardwww [97]

Answer:

- 6

Step-by-step explanation:

The average rate of change of f(x) in the closed interval [ a, b ] is

\frac{f(b)-f(a)}{b-a}

Here [ a, b ] = [ 2, 6 ] , then

f(b) = f(6) = - 6² + 2(6) + 2 = - 36 + 12 + 2 = - 22

f(a) = f(2) = - 2² + 2(2) + 2 = - 4 + 4 + 2 = 2 , then

average rate of change = \frac{-22-2}{6-2} = \frac{-24}{4} = - 6

8 0
3 years ago
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