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3 years ago

There are 3 red marbles and 8 blue marbles in a bag.

Mathematics

1 answer:

exis [7]3 years ago

3 0

A) 3:11
b) 11:8
this should be correct

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Determine the y-intercept of 5x-6y=10

Tema [17]

Answer:

The y intercept of the equation is 10.

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3 years ago

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If someone type an average of 63 words per minute. how many word can they type in 135 minutes?

Rasek [7]

8505. You would do 63 times 135 to get 8505

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4 years ago

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PLEASE HELP

Masja [62]

Answer:

y = 50x + 20

Step-by-step explanation:

$m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

Use the slope-intercept formula to find the slope.

$m = \frac{120 - 20}{2 - 0}$

$m = \frac{100}{2} = 50$

The y-intercept is where the line crosses the y-axis.

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3 years ago

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tickets originally worth p dollars were discounted by 28%. which expression represents the discounted price of the tickets?

castortr0y [4]

Answer:

.72p

Step-by-step explanation:

1p equals the original price

100 percent of p

we are reducing it by 28 percent, which means only 72 percent of p will remain

72 percent or .72

.72p

8 0

2 years ago

Find four numbers that form a geometric progression such that the third term is greater than the first by 12 and the fourth is g

son4ous [18]

Answer:

5 , 4.5, 13.5 and 40.5

Step-by-step explanation:

Since the numbers are in geometric progression, their form is essentially:

a, ar, ar^2 and ar^3

Where a and r are first term and common ratio respectively.

From the information given in the catalog:

Third term is greater than the first by 12 while fourth is greater than second by 36.

Let’s now translate this to mathematics.

ar^2 - a = 12

ar^3 - ar = 36

From 1, a(r^2 - 1) = 12 and 2:

ar(r^2 - 1) = 36

From 2 again r[a(r^2 -1] = 36

The expression inside square bracket looks exactly like equation 1 and equals 12.

Hence, 12r = 36 and r = 3

Substituting this in equation 1,

a( 9 - 1) = 12

8a = 12

a = 12/8 = 1.5

Thus, the numbers are 1.5, (1.5 * 3) , (1.5 * 9), (1.5 * 27) = 1.5 , 4.5, 13.5 and 40.5

7 0

3 years ago