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3 years ago

11

have you baseball card collection got what animals ruined you bought 11 cards to replace some that were lost how many did you be

gin with if you now have 24 total cards

1 answer:

UkoKoshka [18]3 years ago

6 0

24 (you new amount) - 11 (new cards) = 13 cards to begin with

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Can someone pls help, will give brainliest if your answer is correct, question in attachment

Lostsunrise [7]

Answer:

I hope it helps you!!

and watch videos for more information!

7 0

2 years ago

Which trigonometric function requires a domain restriction of [-pi/2, pi/2] to make it invertable?

Galina-37 [17]

Answer:

$y=\tan x$

Step-by-step explanation:

The trigonometric function that needs a domain restriction of $[-\frac{\pi}{2},\frac{\pi}{2} ]$ to make it invertible is $y=\tan x$ .

The function $y=\tan x$ will pass the horizontal line test on this interval therefore making it an invertible function on this interval.

This explains why the inverse tangent function, $y=\tan^{-1} x$ has range $[-\frac{\pi}{2},\frac{\pi}{2} ]$ .

3 0

4 years ago

Can someone plz help me Thank you in advance:)

yulyashka [42]

Answer : The specific heat of the metal is, $2178.67J/kg^oC$

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

$q_1=-q_2$

$m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)$

where,

$c_1$ = specific heat of metal = ?

$c_2$ = specific heat of ice = $2000J/kg^oC$

$m_1$ = mass of metal = 1.00 kg

$m_2$ = mass of ice = 1.00 kg

$T_f$ = final temperature of mixture = $-8.88^oC$

$T_1$ = initial temperature of metal = $5.00^oC$

$T_2$ = initial temperature of ice = $-24.0^oC$

Now put all the given values in the above formula, we get:

$(1.00kg)\times c_1\times (-8.88-5.00)^oC=-[(1.00kg)\times 2000J/kg^oC\times (-8.88-(-24.0))^oC]$

$c_1=2178.67J/kg^oC$

Therefore, the specific heat of the metal is, $2178.67J/kg^oC$

4 0

4 years ago

F(x) = x^2 + 7x-4 find the second derivative

Ulleksa [173]

We know that f(x) = 7x + 8. So, take the derivative of this function with respect to x.

This gives

f'(x) = 7

Now, you probably realized that the x value disappeared. This means that no matter what value of x you use, the derivative of this function is always going to be 7, even at x = 5. That is, the rate of change of this function is always going to be a rate of 7.

5 0

3 years ago

Read 2 more answers

The sloped roof of a house that is right beside its property line can be represented by the inequality −|x − 2| + 9 > 6. Solv

lesya692 [45]

Answer:

This Is CORRECT

Step-by-step explanation:

8 0

3 years ago