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4 years ago

Evaluate the expression when x=-6. x² +5x-3

2 answers:

8 0

You are to evaluate x^2 + 5x - 3 for x=-6

Replace each occurrence of x with parentheses: ( )^2 + 5( ) - 3.
Now write -6 inside each of the two sets of parentheses.

Evaluate ( )^2 and 5( )

Add together the 3 terms.

Alona [7]4 years ago

5 0

5=30-3=27+-36=-9 amswers negfative 9

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Evaluate without using a calculator (x2y-3)0+x1/3-(4x)1/2 when x = 64 and y = 27. Show work.

aleksley [76]

Given:

The expression is:

$(x^2y-3)^0+x^{\frac{1}{3}}-(4x)^{\frac{1}{2}}$

To find:

The value of the given expression when $x=64$ and $y=27$ .

Solution:

We have,

$(x^2y-3)^0+x^{\frac{1}{3}}-(4x)^{\frac{1}{2}}$

Putting $x=64$ and $y=27$ , we get

$=((64)^2(27)-3)^0+(64)^{\frac{1}{3}}-(4(64))^{\frac{1}{2}}$

It can be written as

$=((64)^2(27)-3)^0+(4^3)^{\frac{1}{3}}-(4)^{\frac{1}{2}}(64)^{\frac{1}{2}}$

$=1+4-2(8)$ $[\because a^0=1,a\neq 0]$

$=5-16$

$=-11$

Therefore, the value of the given expression $-11$ when $x=64$ and $y=27$ .

4 0

3 years ago

Why is the information in the diagram enough to determine that △LMN ~ △PON using a rotation about point N and a dilation? becaus

natita [175]

Answer:

The correct option is;

Because ∠MNL and ∠ONP are congruent angles

Step-by-step explanation:

From the diagram shown in the question, ∠MNL and ∠ONP are vertically opposite angles as they are formed by crossing of the lines LP and MO making them congruent, that is ∠MNL ≅ ∠ONP

Given that two angle of triangle LMN are congruent to two angles of triangle PON , then by the Angle Angle (AA) rule of similarity, triangle LMN and PON are similar.

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3 years ago

Volume formula of sphere

OleMash [197]

Answer:

Step-by-step explanation:

volume of sphere=4/3(π r^3)

8 0

4 years ago

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Which expression is equivalent to –6x3 • x • y2 • y6?

vladimir1956 [14]