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FrozenT [24]
3 years ago
14

(01.08)

Mathematics
1 answer:
aleksandr82 [10.1K]3 years ago
5 0

Answer:

answer : C

Step-by-step explanation:

Let f(x) = x + 7 and g(x) = x - 4.

 f(x) · g(x)=(x+7)(x-4) = x² -4x+7x -28

 f(x) · g(x)=x² +3x -28  ....answer : C

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Sarah found that the product of 49 and 805 is 3,165. How would finding an estimate help her know that the answer is NOT reasonab
Dovator [93]

Answer:

49 +805=3,165

Step-by-step explanation:

answer

she will have to count

6 0
3 years ago
H=-16t^2 + 104t + 56​
WITCHER [35]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

h=-16t^{2}+104t+56

Using a graphing tool

see the attached figure

This is the equation of a vertical parabola open downward

The vertex is the point (3.25,225) (a maximum)

The zero's of the function or the t-intercepts are the points (-0.5,0) and (7,0)

The h-intercept of the function is the point (0,56)

The domain of the function are all real numbers

The range of the function h\leq225 ----> All real numbers less than or equal to 225

8 0
4 years ago
QUICK!!! PLEASE HELP!!! 50 points.. and BRAINLIEST FOR THE QUICK AND CORRECT ANSWER.
faust18 [17]

Answer: e=-50|t-40|+2000

The cable car’s elevation will be 750 feet after 15 minutes or 65 minutes.

Step-by-step explanation:

Given: A cable car begins its trip by moving up a hill. As it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet.

Then, total time taken to reach the peak = (Distance) ÷ (speed)

= (2,000 feet) ÷ ( 50 feet/minute)

= 40 minutes

Then, as the car moves down to the hill’s base, its elevation drops at the same rate.

The equation that models the cable car’s elevation, e, after t minutes is

e= (constant rate)|t- time to reach peak |+ Peak's height

e=-50|t-40|+2000

When the cable car’s elevation will be 750 feet after minutes, then we have

750=-50|t-40|+2000\\\\\Rightarrow\ -50|t-40|=750-2000\\\\\Rightarrow\ -50|t-40|=1250\\\\\Rightarrow|t-40|=-\dfrac{1250}{50}\\\\\Rightarrow|t-40|=-25\\\\\Rightarrow t-40=-25\text{ or }t-40=25\\\\\Rightarrow t=-25+40\text{ or }t=25+40\\\\\Rightarrow  t=15\text{ or }t=65

Time cannot be negative, so the cable car’s elevation will be 750 feet after 15 minutes or 65 minutes.

5 0
4 years ago
2
loris [4]

Answer:

30 i think

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
Please help you will get 15 points.
Sedbober [7]

Answer:

6° and acute angle

you watch the clock or find a clock, in right angle there 90° or 3 o'clock, if you want to understand it, try to count the the minute from 12 to 3 in the clock, if you count it then you see the are there is 15 minutes, then the 90° divide the number of minute which is 15, the answer is 6°. and then the answer of the next question is acute angle it is because the hour hand of the clock travels in 1 minute, it means every 1minute there are 6°, and 6° is less than 90° that why it's acute angle.

7 0
3 years ago
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