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3 years ago

How to solve (-6y^-3z^-3)(-1/2y^-1z)

Mathematics

1 answer:

Oksana_A [137]3 years ago

5 0

Answer:

__________

y ^4 z ^2

Step-by-step explanation:

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HELPPP i have 14 left to answer ejvevkjwnd

max2010maxim [7]

Bottom right one is the range

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3 years ago

2x2 – 9x + 2 = –1

Reika [66]

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

<u>Discriminant</u>

$b^2-4ac\quad\textsf{when}\:ax^2+bx+c=0$

$\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}$

$\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}$

$\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}$

$2x^2-9x+2=-1$

$\implies 2x^2-9x+3=0$

$\implies a=2, b=-9, c=3$

$\begin{aligned}b^2-4ac &=(-9)^2-4(2)(3)\\& =81-24\\&=57 > 0\implies \textsf{two real roots}\end{aligned}$

5 0

2 years ago

Solve the following equation for x.<br> 3x - 9 = -42

r-ruslan [8.4K]

Answer:

x = -11

Step-by-step explanation:

Add 9 to both sides of the equation

3 − 9 = −42

3 − 9 + 9 = −42 + 9

Simplify

Add the numbers

3 = −33

Divide both sides of the equation by the same term

3 = −33

3/3 = −33/3

Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

= −11

3 0

3 years ago

Please help on question c

aleksandr82 [10.1K]

Answer: 240 km

Step-by-step explanation:

From the graph :

50 miles = 80km

1 miles = 80/50 km

Therefore :

150 miles = 80/50 x 150

150 miles = 240 km

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3 years ago

(khan academy) please help

Lera25 [3.4K]

Answer:

c is the correct answer

Step-by-step explanation:

we simply multiply powers

7 0

3 years ago