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3 years ago

PLEASE HELP I WILL MARK BRAINLIEST AND GIVE EXTRA POINTS

Mathematics

1 answer:

xxMikexx [17]3 years ago

5 0

Answer:

45 $cm^{2}$

sorry if it is not what u needed

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How to change 13/20 to a percent

ASHA 777 [7]

Answer:

65%

Step-by-step explanation:

Since percentages are out of 100, you can write 13/20 as (13*5)/(20*5) = 65/100, which translates to 65%

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2 years ago

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Question below :)))))))))))))))))

nalin [4]

25 candy in a bag, if 2/5 or 40% of candy is caramels. Then 10 in each bag is caramels.

Your answer would be C.

3 0

3 years ago

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Given a term and the common difference, find the explicit formula.<br> 8. a(19) = 135<br> d = 15

Rasek [7]

The explicit formula is a(n) = 15(n – 10)

<u>Solution:</u>

Given, a term a(19) = 135 and common difference d = 15

We have to find the explicit formula.

Now, we know that, a(n) = a + (n – 1)d where a(n) is nth term, a is first term, d is common difference,

So, for a(19)

$\begin{array}{l}{\rightarrow a(19)=a+(19-1) 15} \\\\ {\rightarrow 135=a+18 \times 15} \\\\ {\rightarrow a=135-270} \\\\ {\rightarrow a=-135}\end{array}$

Now, we know that, an explicit formula is an expression for finding the nth term,

So, in our problem, expression for finding nth term is a + (n – 1)d

$\begin{array}{l}{\rightarrow-135+(n-1) 15} \\\\ {\rightarrow-135+15 n-15} \\\\ {\rightarrow 15 n-150} \\\\ {\rightarrow 15(n-10)}\end{array}$

Hence, the explicit formula is a(n) = 15(n – 10).

7 0

3 years ago

Tom drives a truck. His regular trip is a distance of 280 km. He drives at an average speed of 80 km/h. For safety reasons Tom’s

kakasveta [241]

Cost of fuel = 30% of $400 000 = 30/100 x 400000 = $120 000

Fuel amount = $120 000/$1.5 = 80 000 liters
new cost of fuel = 80000 x $1.6 = $144 000

increase in cost = 144000 - 120000 = $24000

So the increase in petrol price increases the operating cost by $24000

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3 years ago

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PLZ HELP THANKS! Find the equation of the line passing through the pair points (-8,6) (-9,-9). The equation of the line in the f

timurjin [86]

Answer:

The answer is

Step-by-step explanation:

To find the equation of the line we must first find the slope (m)

$m = \frac{y2 - y1 }{x2 - x1}$

So the slope of the line using points

(-8,6) (-9,-9) is

$m = \frac{ - 9 - 6}{ - 9 + 8} = \frac{ - 15}{ - 1} = 15$

So the equation of the line using point (-8,6) and slope 15 is

y - 6 = 15( x + 8)

y - 6 = 15x + 120

Writing the equation in the form

Ax+By=C

We have

15x - y = -120-6

The final answer is

Hope this helps you

8 0

3 years ago