MATHEMATICS MIDDLE SCHOOL

Mr. Anderson drove 168 miles in 3 hours. He then drove the next 2 hours at a rateof 5 miles an hour faster than the first rate,
How many miles did Mr. Anderson drive during th
hours?

Answers

Answer 1

Answer:

Answer:

If you were asking how many miles in total: 290 miles.

If you were asking how many miles in the 2 hours: 122 miles

Step-by-step explanation:

In the first 168 miles,

$Since \nv_1=168miles/3h=56 miles/h\n\nThus \nv_2=v_1+5=56+5=61miles/h\n\nX_1=168miles\nX_2=v_2*2h=61*2=122miles\nX_1+X_2=168+122=290miles\n\n$

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Which can be solved using this equation?8x + 5 = 253 A. There are 253 students attending a ball game in a nearby city. Eight buses that are filled will be transporting students. The other students will be traveling by car. How many students will be arriving by car? B. There are 253 students attending a ball game in a nearby city. Eight students will be traveling to the game by car. Five buses that are filled will be transporting the other students. How many students are in each bus? C. There are 253 students attending a ball game in a nearby city. Five students will be traveling to the game by car. Eight buses that are filled will be transporting the other students. How many students arrive by bus? D. There are 253 students attending a ball game in a nearby city. Five students will be traveling to the game by car. Eight buses that are filled will be transporting the other students. How many students are in each bus?

a gumball machine contains 23 green gumballs, 52 red gumballs, 34 blue gumballs, 61 yellow gumballs, and 30 pink gumballs. what percentage of the gumballs are red?

Answers

24 percent are red of the gumballs

Write the expression 7x^10 + 6x^5 + 5 in quadratic form.a 7x P) + 6x +5
7x10 + 6(x+0 x
6. 7(x)* +6x? +5
7720 + 6(220)2 = 5

Answers

For this case we have the following expression:

$7x^(10) + 6x ^ 5 + 5$

We must rewrite it quadratically:

By definition, a quadratic equation is of the form:

$ax ^ 2 + bx + c = 0$

Now, suppose $u = x ^ 5$

Rewriting the given expression with the change of variable we have:

$7u ^ 2 + 6u + 5$

So, we have a quadratic expression.

Returning the change we have:

$7 (x ^ 5) ^ 2 + 6 (x ^ 5) +5$

ANswer:

Option B

What is the cube root of 30

Answers

Cube root of 30:

Equivalent to 30^(1/3) = 3.10723250595
Approximately rounded to 3.12.

this is the cube root of 30: 3.1072325059538588668776624275224

Cupro-nickel coins are minted by mixing copper and nichel in the ratio 4:1a) How much copper is needed to mix with 20kg of nickel?
b) How much nickel is needed to mix with 20kg of copper?

Answers

Copper: Nickel = 4:1

a) How much copper needed for 20 kg nickel
   C:N = 4: 1
   C:20 = 4:1

C/20 = 4/1 Cross Multiply
C*1 = 4*20
C = 80

80kg Copper would be needed.

b) How much Nickel would be needed for 20 kg of Copper
   C:N = 4: 1
   20:N = 4:1

20/N = 4/1 Cross Multiply
4*N = 1*20
4N = 20 Divide both sides by N.

N = 20/4 = 5

5kg Nickel would be needed.

Find the sum or difference 167.9+83.97

Answers

If you added it up, you'd get 251.87

Answer: 251.87

Hope it helps

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