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disa [49]
3 years ago
15

HELP I NEED HELP ASAP

Mathematics
1 answer:
Crazy boy [7]3 years ago
5 0

Answer:

<u><em>C. strong negative</em></u>

Step-by-step explanation:

The reason why is because, the student's grade is falling dramatically while they watch TV. So therefore, we can erase A and D. B maybe however, it isn't "weak" but it is a heavy decrease. Therefore, your answer would be C.

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Solve equation by factoring.
3241004551 [841]

Hi ;-)

x^2+6x-10=30 \ \ /-30\\\\x^2+6x-40=0\\\\a=1, \ b=6, \ c=-40\\\\\Delta=b^2-4ac=6^2-4\cdot1\cdot(-40)=36+160=196\\\\\sqrt{\Delta}=\sqrt{196}=14\\\\x_1=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-6-14}{2}=\boxed{-10}\\\\x_2=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-6+14}{2}=\boxed4

8 0
3 years ago
If you pay 1875$ to get a 750 sq. ft. house . How much would a 1300 painting job cost
stepan [7]
I multiplied by 2.5 as thats what u get from diving 1875 by 750 and ur answer is 3,250
7 0
3 years ago
A timer is started and a few moments later a model airplane is launched from the ground. Its height (in feet) as a function of t
WITCHER [35]

The airplane reaches its maximum height of 81 feet in 12 seconds.

<h3>Behavior of curves</h3>

If y = x^{2}, it means that the second derivate is 2 which is positive, then there is a minimum turning point.

If y = - x^{2}, it means that the second derivative will be -2 which is negative, then there is a maximum turning point.

Analysis:

h(t) = -(t - 12)^{2} + 81

By expanding,

h(t) = -(t^{2} - 24t + 144) +81

h(t) = -t^{2} + 24t - 144 + 81

h(t) = -t^{2} + 24t - 63

at turning point d/dt(h(t)) = 0

d/dt (h(t)) = -2t +24

-2t +24 = 0

if we differentiate again, second derivative is -2 which is negative, so it is a maximum point.

2t = 24

t  = 12 seconds

h(t) at t = 12

h(t) = -(12)^{2} + 24(12) - 63 = 81 feet

In conclusion, the maximum height of the airplane after 12 seconds is 81 feet.

Learn more about minimum and maximum points: brainly.com/question/14993153

#SPJ1

7 0
2 years ago
A sporting event held at a high school had 135
Anastaziya [24]
911 is the key of power of mind
6 0
2 years ago
Read 2 more answers
Can you tell me what correct answer is and why
solmaris [256]

Answer:

The correct answer is D...

Step-by-step explanation:

In order to find the distance of the diagonals, you would need to use the distance formula...

The square root of (x2-x1)^2 + (y2-y1)^2

After you plug in the letters into the appropriate places you should get the square root of (a+b)^2 +c

8 0
3 years ago
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