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miv72 [106K]
3 years ago
13

(Past Due) Need Help

Mathematics
1 answer:
Charra [1.4K]3 years ago
8 0

I would say its the second one.

the student shouldve distributed the 2^3x+3 into 2^3x+9

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David loves to cook! He knew 21 recipes before starting cooking school and he learns 2 recipes
pishuonlain [190]

Answer:

Sarah is incorrect.

Step-by-step explanation:

By plugging 10 in as 'x' to the equation, we get y=21+(2*10). 2 x 10 is 20, and 20 + 21 is <em>not</em> 42 - it's 41. So, Sarah is incorrect.

7 0
3 years ago
Read 2 more answers
What is the radius of 20?<br><br> (20 is the diameter)
Goshia [24]
Well if d= 20
d=2r

so 20 = 2r

r=10

is that what you wanted, or does this have to do with a circle 

4 0
3 years ago
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A ball is thrown into the air with an upward velocity of 48 ft/s. Its height h in feet after t seconds is given by the function
Masja [62]
The equation modeling the height of the ball at time,t is given by h=-16t²+48t+6
<span>a. In how many seconds does the ball reach its maximum height?
Time taken for the ball to reach the maximum height will be given by:
h'(t)=-32t+48=0
finding the value of t we get:
32t=48
t=48/32
t=1.5 seconds
Thus the time taken for the ball to reach the maximum time is 1.5 seconds

b]</span><span> What is the ball’s maximum height?
The maximum height will be:
h(1.5)=-16(1.5)</span>²+48(1.5)+6
h(1.5)=42 fee
3 0
3 years ago
Jenny has saved $600 from her summer job. During the school year, she withdraws $20 from her account every week for her daily ex
Anastasy [175]

Answer:

17

Step-by-step explanation:

i multiplied 17 by 20 and that gave me 340 which is greater than 300

4 0
3 years ago
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How would you set up this problem to find the height of the sail using reciprocal functions?
AVprozaik [17]

Remark

I'm not sure I know what you mean, but I will answer trying to interpret it so it fits the description of the question.

Step One: Set up the equation. The normal way of solving this would be to use the Cos function.

Cos(theta) = Adjacent / hypotenuse = x/8 Multiply both sides by 8

8*cos(theta) = x Theta = 35

8*cos(35) = x This is about as simple a way as is possible.

6.553 = the height of the sale.

Step Three: try using the reciprocal

1 / cos(35)= hypotenuse / adjacent

1/0.8191 = 8/x cross multiply

x = 0.8191 * 8

x = 6.553

5 0
3 years ago
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