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3 years ago

PLEASE I NEED HELP ON THIS T^T

Mathematics

1 answer:

nignag [31]3 years ago

3 0

Answer:

Step-by-step explanation:

we can solve this using basic algebra

We set up the equation using the info that each video costs $5 and that we but 12 of them

12(1 * 5) + x = 70

(Please note: 1x = x)

12(5) + x = 70

60 + x = 70

60 - 60 + x = 70 - 60

x = 10

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the ratio of high school students who were homeschooled to those who attended other schools was three to seven. if there were 90

lina2011 [118]

Answer:

210 high schoolers as ratio becomes 90:210

Step-by-step explanation:

we can see that 3:7 can be multiplied if 3 x 3 = 9 then 7 x 3 =21 we just add the zero and find a 90:210 ratio

6 0

4 years ago

What's In

Kitty [74]

Answer:

4/5

1/2

1/5

1/2

2/3

Step-by-step explanation:

simply try to find a number that is a factor of both numbers in the fraction and divide it to simplify the fraction

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3 years ago

(3x^3-2x^2+4x-8)-(5x^3+12x^2-3x-4)

n200080 [17]

Answer: $-2x^3-14x^2+7x-4$

Step-by-step explanation:

$(3x^3-2x^2+4x-8)-(5x^3+12x^2-3x-4)$

Distribute the negative sign.

$(3x^3-2x^2+4x-8)-5x^3-12x^2+3x+4$

Remove the other parentheses.

$3x^3-2x^2+4x-8-5x^3-12x^2+3x+4$

Combine like terms.

$-2x^3-14x^2+7x-4$

3 0

3 years ago

D(1) = 1.<br> d(n) = n.d(n-1), for n > 2

melamori03 [73]

Answer:

Step-by-step explanation:

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8 0

3 years ago

Read 2 more answers

Hi, I'm struggling on level 2 for

andrew11 [14]

Answer:

Step-by-step explanation:

we know 100 cm are in one meter, so, 3 meters = 300 cm

then 20/300 = 20 cm of 3 meters , now just reduce the fraction

20/300

= 2 / 30

= 1/15

see??

6 0

2 years ago