Ask question

Ask question

All categories

3 years ago

6

Kacey spends 30 minutes studying for her math and history tests. She spends twice as long studying math as studying history. How

much time does she spend on each subject?

2 answers:

Vinvika [58]3 years ago

5 0

20 minutes for math and 10 for history

Yanka [14]3 years ago

5 0

Answer: 20 mins math & 10 mins history

Step-by-step explanation:

You might be interested in

f(x) = square root ( x^4 -16x^2) let f be the function given by: . . a) Find the domain of f.. b) Find f '(x). c) Find the slope

Bond [772]

A ) The domain:
$x^{4} -16 x^{2} \geq 0 \\ x^{2} ( x^{2} -16) \geq 0 \\ x^{2} -16 \geq 0 \\ x^{2} \geq 16$
x ≤ -4 and x≥ 4 or: x ∈ ( - ∞ , - 4 ) ∪ ( 4 , + ∞ )
b ) f ` ( x ) = $\frac{1}{2 \sqrt{ x^{4} -16 x^{2} } } *( 4 x^{3} - 32 x ) = \\ = \frac{2x( x^{2} -8)}{ \sqrt{ x^{4}-16 x^{2} } }$
c ) The slope of the line normal to the graph at x = 5
m = -1 / f `(x)
f ` ( x ) = $\frac{10(25-8)}{ \sqrt{625-400} }= \frac{10*17}{15} = \frac{34}{3}$
m = - 3/34

8 0

3 years ago

True or False?<br> If, |al = |b|, then either a = b or a = - b

never [62]

Answer:

true

Step-by-step explanation:

3 0

3 years ago

Pls help w work!!

Kazeer [188]

Lets Do

$\\ \sf\longmapsto p = 2(l + w) \\ \\ \sf\longmapsto l + w = \frac{p}{2} \\ \\ \sf\longmapsto w = \frac{p}{2} - l \\ \\ \sf\longmapsto \boxed{ \bf \: w = \frac{p - 2l}{2} }$

4 0

3 years ago

Ohhhhh! I have a math Brainliest

Evgen [1.6K]

B.
B.
C.
I think these are correct. if not... very sorry.

3 0

4 years ago

(50Pts) When using the vertical method to multiply polynomials, your like terms must be lined up in ____________.

vaieri [72.5K]

I think you line them up in columns

7 0

3 years ago