3 years ago

How to find the altitude Of A Trapezoid Without Knowing The Area

Mathematics

1 answer:

Rudik [331]3 years ago

3 0

A=1/2 (b1+b 2)(h) is the area of a trapezoid

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The area of rectangular field is (49m2-42m+9).Find the dimensions of the field

Drupady [299]

Answer:

The dimensions are (7m-3) by (7m-3)

Step-by-step explanation:

We have the area of the rectangular field to be:

$49 {m}^{2} - 42m + 9$

We need to factorize this expression.

Let us rewrite to obtain:

${(7m)}^{2} - 2(7 \times 3)m + {3}^{2}$

We can easily see that the expression is actually a perfect square trinomial.

This gives us:

$(7m - 3)^{2}$

$(7m - 3)(7m - 3)$

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3 years ago

The table shows the snack preferences of 50 shoppers at the mall. What is the probability that one shopper, selected at random f

Monica [59]

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3 years ago

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What value of b will cause the system to have an infinite

m_a_m_a [10]

Answer:

$b=6$

Step-by-step explanation:

The correct question is

What value of b will cause the system to have an infinite number of solutions?

y = 6x – b

–3x + 1/2y = –3

we have

$y=6x-b$ ----->equation A

$-3x+\frac{1}{2}y=-3$ -----> equation B

we know that

If the system has infinite number of solutions then, the equation A must be equal to the equation B

isolate variable y in the equation B

$-3x+\frac{1}{2}y=-3$

Multiply by $2$ both sides

$-6x+y=-6$

$y=6x-6$ -------> new equation B

To find out the value of b, equate equation A and equation B

$6x-b=6x-6$

$b=6$

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3 years ago

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matrenka [14]

Answer:

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Step-by-step explanation:

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the following integers represent several dives of a submarine: -270 feet, -418 feet, -572 feet, -372 feet, -639 feet and -455 fe

leonid [27]

Answer:

-270

Step-by-step explanation:

The value closest to zero on the number line is greatest because all of the values are negative which is less than zero. -270 is closer to 0 than the other values.

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3 years ago