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4 years ago

18. © MP.2 Reasoning A club collected

Mathematics

1 answer:

My name is Ann [436]4 years ago

4 0

Answer:

Step-by-step explanation:

You would do $3,472 to $3,000 divided by $680 that you would go to $700 so you would then do $3,000 divided by $700 = 5

I estimated because dividing those numbers would give you 5.105882353 so an estimation would be 5 instead of all of those numbers

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How would you solve the following problem?

seraphim [82]

The answer should be 1/9y^4

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3 years ago

Tim has a large collection of books. The number of paperback books he owns is three less then four times the number of hardcover

dlinn [17]

Answer: let the no of paperback books be x and hardcover books be y

4y - x = 3

Therefore, x - 4y = -3 -----(1)

x + y = 447 ----(2)

Put x = 447 - y in eqn 1

447- y - 4y = -3

-5y = -3 - 447

-5y = -450

y = 90

x = 357

Step-by-step explanation:

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3 years ago

School started at 9:15am. After two period lasting 50min each, children had a break. At what time was the break?

pogonyaev

Answer:

10:55

Step-by-step explanation:

9:15/10:05/10:55

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3 years ago

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It would be 9 x 7 units

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4 years ago

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What is an equation of the line that passes through the point (-4,-6) and is perpendicular to the line 4x+5y=25

elixir [45]

Answer:

$y = \frac{5}{4} x - 1$

Step-by-step explanation:

The equation of a line is usually written in the form of y=mx+c, where m is its gradient and c is its y-intercept.

First rewrite the equation of the given line in the form of y=mx +c.

4x+5y=25

5y= -4x +25

$y = - \frac{4}{5} x + 5$

The gradient of the given line is $- \frac{4}{5}$

The product of the gradient of perpendicular lines is -1.

$( - \frac{4}{5} )(gradient \: of \: line) = - 1 \\ gradient \: of \: line = - 1 \div ( - \frac{4}{5} ) \\ gradient \: of \: line = \frac{5}{4}$

Thus, m= $\frac{5}{4}$

$y = \frac{5}{4} x + c$

Substitute a coordinate to find c.

When x= -4, y= -6,

$- 6 = \frac{5}{4} ( - 4) + c \\ - 6 = - 5 + c \\ c = 5 - 6 \\ c = - 1$

Hence, the equation of the line is

$y = \frac{5}{4} x - 1$

7 0

3 years ago