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vagabundo [1.1K]

3 years ago

15

HELPPPPPPPPPPPPIIDISKDKDJDNFN

2 answers:

Kisachek [45]3 years ago

6 0

Both are equal to each other

stepladder [879]3 years ago

5 0

$\displaystyle \bf\\\frac{1}{4} \cdot \frac{3}{4} = \frac{3}{4} \cdot \frac{1}{4}~~~\text{Equal because the multiplication is commutative.}\\\\ \\\frac{3}{4}\div\frac{2}{5} \neq \frac{2}{5}\div\frac{3}{4}~~~\text{Not equal because division is not commutative.}$

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seropon [69]

$\text{The range of}\ y=-3^x\ \text{is}\ (-\infty;\ 0).\\\\\text{The range of}\ f(x)=-3^x+7\ \text{is}\ (-\infty;\ 7)$

6 0

2 years ago

Please help fassssst

Zarrin [17]

Answer:

$\dfrac{9}{2}$

Step-by-step explanation:

You can do this using the quadratic equation:

$x =\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

Let's first setup our expression:

4x² + 12x = 135

the quadratic formula is:

ax² + bx + c = 0

4x² + 12x - 135 = 0

Then:

a = 4

b = 12

c = -135

Now we plug in our coefficients and solve:

$x =\dfrac{-12\pm\sqrt{12^{2}-4(4)(-135)}}{2(4)}$

We solve for both to determine the positive one:

$x =\dfrac{-12+ \sqrt{12^{2}-4(4)(-135)}}{2(4)}$ $x =\dfrac{-12- \sqrt{12^{2}-4(4)(-135)}}{2(4)}$

$x =\dfrac{-12+ \sqrt{144+2160}}{8}$ $x =\dfrac{-12- \sqrt{144+2160}}{8}$

$x =\dfrac{-12+ \sqrt{2304}}{8}$ $x =\dfrac{-12- \sqrt{2304}}{8}$

$x =\dfrac{-12+ 48}{8}$ $x =\dfrac{-12- 48}{8}$

$x =\dfrac{36}{8} = \dfrac{9}{2}$ $x =\dfrac{-60}{8} = \dfrac{-15}{2}$

So if you are looking for a positive solution, just take the positive one as x.

8 0

2 years ago

Which number is a perfect cube? <br> 21<br> 49<br> 343<br> 600

artcher [175]

Answer:

343

Step-by-step explanation:

7 cubed = 7 x 7 x 7 = 343

so, 343 is a perfect cube.

6 0

1 year ago

I really need help with this ASAP 71 POINTS

e-lub [12.9K]

Working is a bit of a mess, but vertically she's correct, but she's incorrect horizontally

8 0

2 years ago

At an arcade there is a fee to purchase a game card. Any number of credits can then be added to the card at a constant cost per

natulia [17]

Answer:

25 dollars

Step-by-step explanation:

7 0

3 years ago