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3 years ago

PLEASE HELP

Mathematics

1 answer:

AysviL [449]3 years ago

6 0

Answer

Given expression,

$(81x^2-25)\times \dfrac{6}{18x+10}$

We have to find the value of x for which the expression is undefined.

Simplifying the given expression

$((9x)^2-5^2)\times \dfrac{3}{9x+5}$

$(9x-5)(9x+5)\times \dfrac{3}{9x+5}$

$3(9x-5)$

On solving we can see that the expression is defined for all value of x.

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Which expression is equivalent to (r^-7)^8

ahrayia [7]

Answer:

1/r^56

Step-by-step explanation:

Not sure if you did a typo there or what cus 7 x 8 should be 56

Whenever the power of a number is negative, you flip. So r^-7 becomes 1/r^7

Remove the bracket and distribute 8 to the power of 1 and r^7

1 to the power of 8 will still be 1, r^7 x 8 = r ^ 56

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3 years ago

The Angle of depression from the top of the flagpole to an object on the ground it's 33° if the object is 60 feet from the base

N76 [4]

Answer:

The flag pole is 38.96 feet tall.

Step-by-step explanation:

The angle of depression from the top of the flagpole to an object on the ground is 33°.

The object is 60 feet from the base of the cliff.

We need to find the height of the flag pole.

Here, base, B = 60 feet

We know that,

$\tan\theta=\dfrac{P}{B}$

Put all the values to find P.

$P=B\times \tan\theta\\\\P=60\times \tan(33)\\\\P=38.96\ ft$

So, the flag pole is 38.96 feet tall.

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2 years ago

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denis-greek [22]

Answer:

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Step-by-step explanation:

attached

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2 years ago

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Tems11 [23]

Answer:

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2 years ago

Jill is going to multiply a whole number greater than zero by 5. The last digit in the product will either be 0 or what other nu

IRINA_888 [86]

Every number times 5 the last digital number will be 5 or 0

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