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2 years ago

Pls help me i need it to move on i did so many i cant figure it out.

Mathematics

1 answer:

lukranit [14]2 years ago

5 0

Answer:

B. Between 200 and 400

Step-by-step explanation:

Rule of exponents means that you can subtract when they are divided

-5+7=2

7.8*10^2/3.1

Simplify

780/3.1= 251.612903

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The path of a projectile launched from a 26-ft-tall tower is modeled by the equation y = −16t2 + 64t + 26. What is the maximum h

BabaBlast [244]

Answer:

The maximum height of the projectile is 90 ft

Step-by-step explanation:

Here, we want to get the maximum height reached by the projectile

The answer here will be the y-coordinate value of the vertex form of the given equation

so firstly, we have to write the equation in the vertex form

We have this as;

y = -16t^2 + 64t + 26

That will be;

y = a(x-h)^2 + k

y = -16(x-2)^2 + 90

where the vertex of the equation is;

(-h,k)

in this case is 90 and thus, that is the maximum height of the projectile

8 0

3 years ago

Find the value of the variable. Round decimal answers to the nearest tenth. x =

Andrews [41]

Answer:

Step-by-step explanation:

The hypotenuse of a triangle is a² + b² = c².

12² + 9² = c²

144 + 81 = 225

√225 = 15

3 0

3 years ago

u can look this up here on brainly for an answer source if you want but do the one that has the greatest points... its on google

Alla [95]

Answer:

First one is 41

Second one is 87

Step-by-step explanation:

Make the shaded part as a trapezoid which is (3+6)*10/2 you just have to get rid of 2*2. So you get 41 as the answer.

The unshaded part will be 16*8 then subtracts the shaded part which is 41. Then you get the answer 87.

6 0

3 years ago

Which statement is true about the domain of y = 3(2^-x)? Explain.

SVEN [57.7K]

We want to determine the domain of ${y=3 \cdot 2^{-x}=3 \cdot ({2^{-1}})^x=3 \cdot ({ \frac{1}{2}})^x$

any function of the form $y=f(x)=a \cdot b^x$ is called an "exponential function",
the only condition is that b is positive and different from 1, and a is a nonzero real number.

The domain of such functions is all real numbers.

That is for any x, the expression 3(2^-x) "makes sense".

Answer: The domain is all real numbers

8 0

3 years ago

If my assignment is worth 14% of my quiz weight which is 27% of my total weight what is the weight of that assignment

Nimfa-mama [501]

Answer:

3.785%

Step-by-step explanation:

Assignment is 14% of the quiz

=> Assignment = 14% of the quiz

Quiz is 27% of the total weightage

=> 14% of 27%

Find 14% of 27%

14% of 27%

= 0.14 x 27 = 3.785%

The assignment is 3.785% of the total weightage.

6 0

3 years ago