Which statement is TRUE about

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

6 0

I am bad at Common Core (I was good before, but not anymore) so I am saying none of the above

You might be interested in

Simplify. (-2)^-3 ?????

Licemer1 [7]

Remember
$(ab)^c=(a^c)(b^c)$ and
$x^{-m}= \frac{1}{x^m}$
so
$(-2)^{-3}= \frac{1}{(-2)^3}= \frac{1}{(-1)^3(2)^3}=\frac{1}{(-1)(8)}=\frac{1}{-8}=\frac{-1}{8}$

3 0

3 years ago

What is this equation factored 3x^2+7x-8=0

Vesna [10]

Answer:

−

√

145

−

√

145

Step-by-step explanation:

7 0

3 years ago

Is this equation a function? y = -3x^2 + 10

snow_lady [41]

Answer:

no this isnt a function

Step-by-step explanation:

a equation that's function has to have numbers and can only include the

letter X as the unknown variable

but this problem has a ^ sign

so it's not function

7 0

4 years ago

What is the value of x with clear working out please?

nirvana33 [79]

Answer:

Answer:  x is 46° 

Step-by-step explanation:

• Let's first find Angle ACB

${ \rm{ \angle ACB + 23 \degree + 90 \degree = 180 \degree}} \\ \\ { \rm{ \angle ACB = (180 - 90 - 23) \degree}} \\ \\ { \underline{ \rm{ \: \angle ACB = 67 \degree}}}$

• From alternative angles, x = Angle BAC.

• Since AB = AC, then Angle ABC = Angle ACB

${ \rm{x + \angle ABC + \angle ACB = 180 \degree}} \\ \\ { \rm{x + 67 \degree + 67 \degree = 180 \degree}} \\ \\ { \rm{x + 134 \degree = 180 \degree}} \\ \\ { \boxed{ \rm{x = 46 \degree}}}$