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3 years ago

Kaitlyn was asked to find which expression below is equivalent to -3x + 5(x + 2)?

Mathematics

2 answers:

Flura [38]3 years ago

6 0

Answer:

C is the answer

Step-by-step explanation:

just myltiply 5 with bracket

NISA [10]3 years ago

4 0

The correct answer is c (2x+10)
I think her error was that she multiplied he numbers wrong

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Sarah biked the same distance each day for 6 days. If she traveled 468 kilometers altogether, how many kilometers did she travel

I am Lyosha [343]

76 kilometers per day.

Step by step

468 divided by 6 = 76

76•6=468

8 0

3 years ago

Which of the functions below have period 2pi? Check all that apply. A. y = tan x B. y = sec x C. y = cot x D. y = csc x

Colt1911 [192]

Answer:

Option B and D are correct that is $y=secx$ and $y=cscx$ respectively.

Step-by-step explanation:

We have been given four functions:

CaseA:

$y=tanx$

$\text{Period oftanx is} \pi$

Hence, A is correct.

CaseB:

$y=secx$

$\text{Period of secx is} 2\pi$

Hence, B is correct.

CaseC:

$y=cotx$

$\text{Period of cotx is} \pi$

Hence, C is not correct.

CaseD:

$y=cscx$

$\text{Period of cscx is} 2\pi$

Hence, D is correct.

4 0

4 years ago

Read 2 more answers

The gravitational force formula is F=Gm1m2 where F is the force between two objects, G is the constant of gravitation, m1 is the

Kruka [31]

$\text{r = }\dfrac{\sqrt{G*m_1*m_2}}{\sqrt{F}}$

This is what is in the middle of the second paragraph. That statement is correct.

I don't know that it is any simpler or not, but what they have done in the answer is rationalize the denominator. That means that the denominator is no longer under the square root sign.

To get that result, you multiply numerator and denominator by √F

When you do that, your get

$\text{r =}\dfrac{G\sqrt{m_1*m_2}\sqrt{F}} { \sqrt{F*}\sqrt{ F}}$

This results in the middle answer.

$\text{r = } \dfrac{ \sqrt{G m_1*m_2*F}}{F}$

6 0

3 years ago

Read 2 more answers

If h (r)= 2/3 r - 6, what is the value of h(-9)?

Bad White [126]

Answer:

$h(-9)=-\frac{2}{33}$

Step-by-step explanation:

The given expression is $h(r)=\frac{2}{3r-6}$

We want to find the value of h(-9).

We substitute r=-9 to obtain:

$h(-9)=\frac{2}{3(-9)-6}$

We multiply out to obtain:

$h(-9)=\frac{2}{-27-6}$

We simplify the denominator to obtain:

$h(-9)=\frac{2}{-33}$

This is the same as:

$h(-9)=-\frac{2}{33}$

3 0

3 years ago

15 inches increased by 20% eqauls

Murljashka [212]

Answer:

3in

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers