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masya89 [10]
2 years ago
14

3 quick algebra 1 questions for 50 points!

Mathematics
1 answer:
Goshia [24]2 years ago
5 0

#1

  • h(t)=-16t²+58t+2

h(2.5)

  • -16(2.5)²+58(2.5)+2
  • -16(6.25)+145+2
  • 147-100
  • 47ft

After 2.5s the ball was at 47ft

#2

  • g(x)=x²-9

g(0)

  • -9

g(4)

  • 4²-9=16-9=6

g(7)

  • 7²-9
  • 49-9
  • 40

Range

  • {-9,6,40}

#3

  • f(-3)=5
  • f(0)=0
  • f(1)=-3

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If f(x) = 6 - 5x, what is f(x)^-1? (check attachment)
SCORPION-xisa [38]

f(x) = 6-5x

y = 6-5x .... replace f(x) with y

x = 6-5y .... swap x and y; solve for y

x+5y = 6

5y = 6-x

y = (6-x)/5

f^{-1}(x) = \frac{6-x}{5} ... replace y with the inverse function notation

<h3>Answer: Choice D.</h3>
6 0
4 years ago
Plz help with 9 and 10
GenaCL600 [577]

Answer:

Tony can buy three games with his savings over two months and Alice can buy six concert tickets.  

Step-by-step explanation:

Over two months, Tony has watched a total of 53.6 hours of television (35.4 + 18.2).  If he save $2.50 for each hour, we can multiply his total hours by the amount per hour, or 53.6 x 2.50 = $134.00.  Since each game that Tony wants to buy costs $35.75, we need to divide his total savings by the cost of each game, or 134/35.75 = 3.75.  Since Tony can't buy a portion of the game, the most amount of games he can buy is 3.  Alice watched a total of 48.4 hours of television (21.8 + 26.6).  If she also saves $2.50 per hour, then her total savings is 2.50 x 48.4 = $121.00.  Since her concert tickets are $17.50 a piece, we divide her total savings: 121/17.50 = 6.9.  Alice can also not buy a partial ticket, so the total amount she can buy is 6.  

4 0
3 years ago
How many hours of sleep did you get last night? What fraction of the day is that? What is the decimal equivalent (use your calcu
rodikova [14]

Answer:

Step-by-step explanation:

how many hours of sleep did you get = 7 hours

What fraction of the day is that = 7/24

What it the decimal equivalent = 0.29 ( 2 decimal point)

What is the percentage = 1.68%

6 0
3 years ago
Help me pls i don't understand the problem so can u give me the answers and also explain
WARRIOR [948]

Step-by-step explanation:

1)

\frac{2}{3} +\frac{4}{5} =\frac{10+12}{15}=\frac{22}{15} .

2) the same value of the denominator of the fractions.

3) 4²*2²=16*4=64 or 4²*2²=(4*2)²=8²=64.

Megan's answer is correct.

4) if the given length is 2,25=9/4 (feet), then the length of each piece is 9/4 :3=3/4=0.75 (feet) or 3/4*12=9 (inches).

5) a. 4-6= -2; b. -4+6=2; c. -4-6= -10, so the required order is c<a<b.

6) A. -8+3= -5; B. -8*3= -24, so the greater value is (-5) - answer A.

7) if to calculate every option, then A. 2.3*6.5=14.95; B. 21.45-6.5=14.95; C. 8.32+6.63=14.95, - all of them are equal.

6 0
3 years ago
Please help!!!!!! ASAP!!!
Kitty [74]

Answer:

B. po ang answer sa palagay ko lang po

6 0
2 years ago
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