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frosja888 [35]
2 years ago
13

Need help with these. 11th grade algebra 2 class. thanks ​

Mathematics
1 answer:
OlgaM077 [116]2 years ago
3 0

15) x=31/10
16)x=2
17)x=16/3
18)x=-2
19)2.5 hours
20) 32 hours
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It is given that<br> H=(x:x
Ludmilka [50]

Answer:

is rational number.......

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2 years ago
Complete the square and graph: 9y²−x − 18y +10=0 ​
Nitella [24]

Answer:

See below ~

Step-by-step explanation:

Completing the square :

  • 9y² - x - 18y + 10 = 0
  • 9y² - 18y + 9 - 9 - x + 10 = 0
  • <u>(3y - 3)² - x + 1 = 0</u>

<u></u>

Graph :

4 0
2 years ago
Read 2 more answers
If he has his choices narrowed down to 77 hip-hop, 55 jazz, 77 pop, and 88 blues songs, and he wants to play all 55 jazz songs,
Gnom [1K]

Answer:

1.27 × (10^73)

Step-by-step explanation:

55!

= 1.2696403 × (10^73)

4 0
3 years ago
Nina and Jo both ran an 8 km race. Nina took 55 minutes to run the whole race. Jo started the race 3 minutes later than Nina but
grin007 [14]

Answer:

Step-by-step explanation:

First we figure out how fast Nina can run. If Nina can run 8 km in 55 minutes, then her rate is

\frac{8km}{55min}=.145\frac{km}{min} and we can use that in a d = rt table:

                 d        =        r        *        t

Nina                            .145

Jo

Now we can fill in the distance which is 6 for both, since that is the distance where they met:

                d        =        r       *        t

Nina         6        =     .145

Jo             6        =

Now we go to the info given about the time. If Jo started the race 3 minutes after Nina, that means that Nina is running 3 minutes longer than Jo. Filling in the time info:

                d        =        r        *        t

Nina          6       =       .145    *      t + 3

Jo              6       =         r       *         t

As you can see, right now we have 2 unknowns in Jo's row. But we don't have to! We will go to Nina's row where the only unknown is time and solve for t. If d = rt, then

6 = .145(t + 3) and

6 = .145t + .435 and

5.55 = .145t so

t = 38.379 minutes. This means that Jo was running 38.379 minutes when she caught up to Nina (it took Nina 3 minutes longer than that to go 6 km since she was already running for 3 minutes when Jo started the race). If Jo's time is 38.379, we can use that in her row for t and solve for r. If d = rt, then

6 = r(38.379) and

r = .16 km/min

Let's check it without the rounding (rounding takes away from the accuracy). If 6 = .145(t + 3) and Nina's rate not rounded is .145454545 and t = 38.37931034, then, rewriting without rounding:

6 should equal .145454545( 38.37931034 + 3)

6 ?=? .145454545(41.37931034)

6 ?=? 6.0 so

Jo's rate is .16 km/min rounded

6 0
2 years ago
H/5 &gt; 12<br> What is it true and what is it false
Karolina [17]

Answer:

This statement is false

Step-by-step explanation:

5 is less than 12 so it should be written like this

5 < 12

Alligator mouth faces the larger numbers

7 0
2 years ago
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