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3 years ago

9

Which expression is equivalent to (3 x^ 2 - 7)

1 answer:

Kay [80]3 years ago

5 0

Answer:

What are the posible answers for the question?

Step-by-step explanation:

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What is the area of a circle with endpoints (-2, 0), (0, 2), (0, -2), and (2, 0).

Nataly_w [17]

I hope this helps you

4 0

3 years ago

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Please show your work

vivado [14]

Answer is B because what it is asking you to do is which ones are about 50% so you add the percents from the answers together and the one that isn't close to 50% Is the answer this is B because
32+29+13=74 this is the only one that is way to big if you add the others they are approximately 50%

3 0

3 years ago

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What is the solution to -4x+12<36?<br><br> A- x<-6<br> B- x>-6<br> C- x>6<br> D-x<6

Karolina [17]

Answer:

B- x > -6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

-4x + 12 < 36

<u>Step 2: Solve for </u><em><u>x</u></em>

[Subtraction Property of Equality] Subtract 12 on both sides: -4x < 24
[Division Property of Equality] Divide -4 on both sides: x > -6

3 0

3 years ago

Complete the square on the following quadratic

kramer

Answer:

Completing the square we have

$x_{1} =\sqrt{55}-8\\\\x_{2}=-\sqrt{55}-8$

Step-by-step explanation:

$x^{2} +16x+9=0$

we have to divide the coefficient of x by half, and then raise it to the square, that number is added and subtracted at the same time

$x^{2}+16x+64-64+9=0$

$(x+8)^{2} -55=0$

$(x+8)^{2} =55$

later we can write

$\sqrt{(x+8)^{2}}= \sqrt{55}$

we know

$\sqrt[2]{a^{2}} =abs(a)$

so we have

abs(x+8)= $\sqrt{55}$

we have

$x_{1} =$ x+8= $\sqrt{55}$

$x_{2}=$ x+8= $-\sqrt{55}$

finally we have

$x_{1}=\sqrt{55}-8$

$x_{2} = -\sqrt{55}-8$

4 0

3 years ago

Use the drop-down menus to complete the statements.

nasty-shy [4]

Answer:

See Below.

Step-by-step explanation:

Remember that:

If c² > a² + b², then we have an obtuse triangle.
If c² < a² + b², then we have an acute triangle.
And if c² = a² + b², then we have a right triangle.

Where c is the longest side, and a and b are the two remaining sides.

$4^2\text{ is }\textbf{ less than (or $$

$\text{Therefore, }\Delta JKL \text{ is }\textbf{an acute triangle.}$

(16 is less than 9 + 9 or 18.)

$5^2\text{ is } \textbf{equal to (or $=$) } 3^2+4^2$

$\text{Applying the same method, $\Delta ABC$ is }\textbf{ a right triangle.}$

(25 is equal to 9 + 16 = 25.)

7 0

3 years ago