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lidiya [134]
3 years ago
7

Janelle got 19 problems out of 25 correct on her quiz. To find her quiz grade, she can divide the number she got correct out of

the total number of problems, then multiply by 100. What is her quiz grade?
Mathematics
2 answers:
Alexeev081 [22]3 years ago
5 0

Answer:

I think the answer is 131 I'm not really sure I have no brain.

Step-by-step explanation:

kompoz [17]3 years ago
3 0

Answer:

76%

Step-by-step explanation:

\frac{19}{25} × 100% = 76%

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April shoots an arrow upward at a speed of 80 feet per second from a platform 25 feet high. The pathway of the
zaharov [31]

Answer:

The maximum height of the arrow is 125 feet.

Step-by-step explanation:

The pathway of the arrow can be represented by the equation,

h = -16t^2 +80t + 25 .....(1)

Where h is height in in feet and t is time in seconds.

It is required to find the maximum height of the arrow. For maximum height, \dfrac{dh}{dt}=0.

So,

\dfrac{d(-16t^2 +80t + 25)}{dt}=0\\\\-32t+80=0\\\\t=\dfrac{80}{32}\\\\t=2.5\ s

Put t = 2.5 s in equation (1). So,

h = -16(2.5)^2 +80(2.5) + 25\\\\h=125\ \text{feet}

So, the maximum height of the arrow is 125 feet.

6 0
3 years ago
If cos -105º = -0.26 and csc -105º = -1.03, then cos 105º = and csc 105º = .
andreyandreev [35.5K]

Answer:

cos (105°) = - 2.6

csc (105°) = 1.03

Step-by-step explanation:

Given that cos (-105°) = - 0.26 {The negative sign is due to the angle - 105° lies in the third quadrant where cos value is negative}

Again, given that csc (- 105°) = - 1.03 {{The negative sign is due to the angle - 105° lies in the third quadrant where csc value is negative}

Now, cos (105°) = - 2.6, because 105° lies in the second quadrant and here cos value is negative.

And csc (105°) = 1.03, because 105° lies in the second quadrant and here csc value is positive. (Answer)

3 0
3 years ago
How do i write log 4^2=16 in logarithmic form
ohaa [14]
Log16 4 = 2      
log base 16 then the number four then set that equal to 2        

7 0
3 years ago
A recipe includes 6 cups of flour and 2/3 cup of butter. Write the ratio of the amount of flour to the amount of butter as a fra
diamong [38]
6 : 2/3.....multiply by 3
18 : 2...reduce 
9:1 or 9/1
6 0
3 years ago
A wheel has a diameter of 28 inches. What is the approximate distance around the outside of the wheel? Use 3.14 for pi.
prohojiy [21]

Answer:

43.96

Step-by-step explanation:warning might be wrong

8 0
3 years ago
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