MATHEMATICS HIGH SCHOOL

Johnathan has 2500 kg of sand delivered to a construction site every day. About how many tons of sand does he have delivered to the site after 4 weeks? 1 ton≈907.2 kg A) 2.5 tons
B) 19.3 tons
C) 77.2 tons
D) 324,000 tons

Answers

Answer 1
Answer:

The answer is C.

Since every week is made up of 7 days, then four weeks will have;

2500 * 7 * 4 = 70,000 kg delivered

If 907.2kg = 1 ton, then to convert 70,000 kg to tons;

70,000/907.2 = 77.16049.....

We round off to  77.2 tons
Answer 2
Answer:

Answer:

the answer C) 77.2 tons

Step-by-step explanation: I took the quiz and it is wright :)

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If m is the number of magic markers, which variable expression represents the phrase below?The difference between the number of magic markers and 7 colored pencils
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Answers

Answer:

m-7

Step-by-step explanation:

This is shown because the Difference relates to subtraction. You can then use process of elimination to see the answer will be m-7

PLEASE ANSWER THE QUESTION CORRECTLY!!!!!!!!!!!!

Answers

Answer: -2,2

Step-by-step explanation:

Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then.Find Ralph's age now.

Answers

R = 3S

R + 6 = 2 (S+6)

Substitute the first equation in the second one:

(3S) + 6 = 2 (S + 6)

3S + 6 = 2S + 12

S + 6 = 12

R = 18
S = 6

Check:

R is 3 times S now.

In 6 years, R will be (18 + 6) = 24, S will be (6 + 6) = 12.

24 = 2 x 12        yay

Twenty divided by 60

Answers

Answer:

1/3

Step-by-step explanation:

Answer: (1)/(3)

Step-by-step explanation:

Step 1:Divide both the numerator and the denominator by the GCF.

(20)/(60) ÷ (20)/(20)

Step 2: Simplify

(1)/(3)

The population of Germany is about how many times the population of Martinique?Explain your reasoning.Germany: 8.27*10^7
Martinique: 4.05*10^5

Answers

We have to take the population of Germany divided by the population of Martinique:
(8.27*10^7)/ (4.05*10^5)= 204.198.

Conclusion: The population of Germany is about 204 times as large as the population of Martinique.

Hope this helps~

which of the following best describes the relationship between (x+1) and the polynomial -3x^3-2x^2+1 a) (x+1) is a factor b) (x+1) is not a factor c) it is impossible to tell whether (x+1) is a factor

Answers

Answer:

I will solve this problem by factor theorem.

If , (x+1) is a factor of the polynomial , f(x)=-3 x^3-2 x^2 +1 then ,if we substitute,x= -1 in f(x), then, f(-1)=0.

Now,

f(-1)= -3* (-1)^3-2 * (-1)^2+1\n\n f(-1)=-3 * (-1)-2 * 1+1\n\n f(-1)=3 -2+1\n\n f(-1)=2

As, f(-1)≠ 0

Option B: (x+1) is not a factor of the polynomial , f(x)=-3 x^3-2 x^2 +1.
Hello,

3x^3+2x²-1=(x-1)(3x²-x+1)+2
remainder is 2
(x+1) is not a factor of 3x^3+2x²-1 nor of -(3x^3+2x²-1)= -3x²-2x²+1.

Answer B
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