2 years ago

(Number 13) CAN SOMEONE PLEASE HELP ME!!

Mathematics

1 answer:

otez555 [7]2 years ago

7 0

A. 25 Keep in mind AB = BC!

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The area of trapezium is 1586cm² and the distance between sides is 26cm.If one of the parallel sides is 84cm,find the other

irinina [24]

Check the picture below.

we know the area is 1586, so

$\stackrel{\textit{area of a trapezoid}}{A=\cfrac{h(a+b)}{2}}\implies 1586=\cfrac{26(84+b)}{2}\implies 1586=13(84+b) \\\\\\ \cfrac{1586}{13}=84+b\implies 122=84+b\implies 38=b$

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1 year ago

Using appropriate properties, find the value of 249² - 248²

Lady_Fox [76]

Answer:

$\boxed{\bold{\huge{\boxed{497}}}}$

Step-by-step explanation:

=> $\sf 249^2 - 248^2$

Using Formula $\sf a^2 - b^2 = (a+b)(a-b)$

Where

a = 249

b = 248

=> $\sf (249+248)(249-248)$

=> $\sf (497)(1)$

=> 497

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2 years ago

8 < -3x + 10 greater than sign meaning greater than or equal to!

goldfiish [28.3K]

Answer:

2/3 >=x

Step-by-step explanation:

8 =< -3x + 10

subtract 10 from each side

8-10 <= -3x+10-10

-2 <=-3x

divide by -3 (remember to flip the inequality)

-2/-3 >= -3x/-3

2/3 >=x

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2 years ago

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An airplane travel at a constant speed of 575 miles per hour.write and equation that can be used to determine the number of mile

Oxana [17]

Answer:

$m = 575h$

Step-by-step explanation:

Given

$Rate = 575 miles/hour$

Required

Determine the equation for the model

Represent the number of hours with h and the miles with m.

Using distance formula:

$Distance = Speed * Time$

In this case, it is:

$Miles = Rate * Hour$

So, we have:

$m = 575 * h$

$m = 575h$

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2 years ago

H(x)=4x-2;find h(-9)

Yuki888 [10]

Answer: h(-9)=4*(-9)-2=-36-2=-38

-38 is ur answer

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3 years ago

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