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4 years ago

How many marbles must be in the sixth line?

Mathematics

2 answers:

Schach [20]4 years ago

8 0

D you need more information to answer this question this is want I think I hope I answered the question right

Liula [17]4 years ago

7 0

i think for this one will need to go for

d) we need more information

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3x + y = 2 x – 2y = 10 Someone help me

Alex777 [14]

The answer is x=2 nd y=-4

5 0

3 years ago

Read 2 more answers

JOE HAS A COLLECTION OF 35 DVD MOVIES.HE RECEIVED 8 OF THEM AS GIFTS. JOE BOUGHT THE REST OF HIS MOVIES OVER 3 YEARS. IF HE BOUG

Fiesta28 [93]

So 35-8 is 27. 27 divided by 3 is 9.

9 movies each year! :D

7 0

3 years ago

Use the normal distribution to compute probability with technology - Calculator Question Suppose that the annual household incom

kondor19780726 [428]

Answer:

0.02

Step-by-step explanation:

Given a normal distribution :

Mean income (m) = 25000

Standard deviation of income (s) = 6000

X ≥ 12000

Using the relation to fund the standardized score :

Zscore =(x - m) / s

Zscore = ( 12000 - 25000) / 6000

Zscore = -13000 / 6000

Zscore = - 2.167

Using a z probability calculator :

P(Z ≤ - 2.167) = 0.015117

= 0.02

3 0

3 years ago

The Royal Fruit Company produces two types of fruit drinks. The first type is 55% pure fruit juice, and the second type is 80% p

Stolb23 [73]

Answer:

First type of fruit drinks: 48 pints

Second type of fruit drinks: 32 pints

Step-by-step explanation:

Let's call A the amount of first type of fruit drinks. 55% pure fruit juice

Let's call B the amount of second type of fruit drinks. 80% pure fruit juice

The resulting mixture should have 65% pure fruit juice and 80 pints.

Then we know that the total amount of mixture will be:

$A + B = 80$

Then the total amount of pure fruit juice in the mixture will be:

$0.55A + 0.8B = 0.65 * 80$

$0.55A + 0.8B = 52$

Then we have two equations and two unknowns so we solve the system of equations. Multiply the first equation by -0.8 and add it to the second equation:

$-0.8A -0.8B = -0.8*80$

$-0.8A -0.8B = -64$

$0.55A + 0.8B = 52$

--------------------------------------

$-0.25A = -12$

$A = \frac{-12}{-0.25}$

$A = 48\ pints$

We substitute the value of A into one of the two equations and solve for B.

$48 + B = 80$

$B = 32\ pints$

6 0

3 years ago

Tommy and Mark earned a total of $88.00 raking leaves for Mrs. Bopp. Tommy raked for 5 hours and Mark raked for 3 hours. If the

kompoz [17]

Answer:

Tommy earned $55

Step-by-step explanation:

Proportions

Tommy and Mark made $88 raking leaves for Mrs. Bopp. They were paid the same rate and Tommy raked for 5 hours while Mark raked for 3 hours.

The total time both raked is 5+3=8 hours. The rate Mrs. Bopp paid them was $88/8 = $11 per hour.

Tommy raked 5 hours, so he earned 5*$11 = $55

Tommy earned $55

8 0

3 years ago