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kramer
2 years ago
9

In which of these situations do the quantities combine to make 0? O A. On Monday, Huang withdraws $30 from a bank account. On Fr

iday, he deposits $30 into the account. OB. A diver descends 25 feet. She then descends another 25 feet. O C. Rosita receives $15 for pet sitting. She then spends $10 on a book. O D. In the morning, the temperature rises 10 degrees. In the evening, it falls by 15 degrees.​
Mathematics
1 answer:
mr_godi [17]2 years ago
7 0

Answer:

B- Erica deposited $75 into her savings account. She withdrew $75 the following week.

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Attend to precision. Mimi says that the 16 is 4.<br> Is Mimi correct? Explain.
garri49 [273]

Answer: It depends on the terms.

Step-by-step explanation: In fraction terms 16 is equivalent to 4. In number terms 16 is a number larger than 4.

8 0
3 years ago
NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t2+121t
Alenkasestr [34]

NASA launches a rocket at t = 0 seconds. Its height, in meters above sea-level, as a function of time is given by

h(t)=-4.9t^2+121t+283

The sea level is represented by h = 0, therefore, to find the corresponding time when h splashes into the ocean we have to solve for t the following equation:

h(t)=0\implies-4.9t^2+121t+283=0

Using the quadratic formula, the solution for our problem is

\begin{gathered} t=\frac{-(121)\pm\sqrt{(121)^2-4(-4.9)(283)}}{2(-4.9)} \\ =\frac{121\pm142.083778...}{9.8} \\ =\frac{121+142.083778...}{9.8} \\ =26.8452834694... \end{gathered}

The rocket splashes after 26.845 seconds.

The maximum of this function happens at the root of the derivative. Differentiating our function, we have

h^{\prime}(t)=-9.8t+121

The root is

-9.8t+121=0\implies t=\frac{121}{9.8}=12.347

Then, the maximum height is

h(12.347)=1029.99

1029.99 meters above sea level.

6 0
1 year ago
In ΔXYZ and ΔEFG, angles Y and F are right angles. Which set of congruence criteria would be enough to establish that the two tr
alexandr1967 [171]

Answer:

I think it is B.

Step-by-step explanation:

7 0
3 years ago
Use the quadratic formula to solve the equation x^2-7x-6=0
olganol [36]

Answer:

\frac{7\pm\sqrt{73}} {2}

Explanation:

We have been given with the quadratic equation x^2-7x-6=0

We have general formula to find the roots of a quadratic equation first we find the discriminant with formula

D=b^{2}-4ac

and after that to find the variable suppose x we have the formula

x=\frac{-b\pm\sqrt{D}} {2a}

And general quadratic equation is

ax^2+bx+c=0

On comparing the given quadratic equation with genral quadratic equation we will have values

a=1, b=-7 and c=-6

After substituting these values in the formula we will get  

D=(-7)^2-4(1)(-6)={73}

After substituting in the formula to find x we will get

\frac{-(-7)\pm\sqrt{73}} {2}= \frac{7\pm\sqrt{73}} {2}

4 0
3 years ago
Read 2 more answers
Given h(x) = 5x + 2, solve for a when h(x) = -8.
Whitepunk [10]

Answer:

i think its -38

Step-by-step explanation:

3 0
3 years ago
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