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wlad13 [49]
3 years ago
15

Violet has taken three test with rhe score of 60,65 and 70. To get an 70 average, what must her grade be on the fourth test? Wri

te and solve an equation to find her third test score.
Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

85

Step-by-step explanation:

Equation-

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Solve by Elimination<br> 2x+5y=9<br> 3x-5y=11
shepuryov [24]

Answer:

x = 4 , y = ⅕

Step-by-step explanation:

2x + 5y = 9 (1)

3x - 5y = 11 (2)

Add (1) and (2)

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Using (1), find y

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9.80x10^-3 + 1.60x10^-4 scientific notation
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**MARKING BRAINLIEST PLEASE HELP**
raketka [301]

Answer:

\text{1. } v=16t+\frac{h-c}{t},\\\text{2. }90\:\mathrm{ft/s}, \\\text{3. Cannot be determined}

Step-by-step explanation:

1. The initial equation given to us is h=-16t^2+vt+c. Rearranging the equation to isolate v, we have:

vt=16t^2+h-c,\\\boxed{v=16t+\frac{h-c}{t}}

2. Using the equation we rearranged in part 1, we can substitute given values:

v=16(3)+\frac{131-5}{3},\\v=48+42=\boxed{90\:\mathrm{ft/s}}

3. We see from our equation in part 1 (v=16t+\frac{h-c}{t}) that when t=0, the denominator of our fraction will be equal to 0. Since we cannot divide by 0, the velocity remains undefined and cannot be determined.

3 0
3 years ago
Find the value of X. What is x and how do you solve for y first.
11111nata11111 [884]

Answer:

id.k but i hope this wuote helps u have a great day :) :)

Step-by-step explanation:

Everything will be okay in the end. If it’s not okay, it’s not the end

Have a nice day :) :) :)

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3 years ago
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