2 years ago

If f(x) = x and g(x) = 2x + 7, what isf[90X)] when g(x) = 11?

1 answer:

8 0

$\bf \begin{cases} f(x) = x\\ g(x) = 2x+7 \end{cases}~\hspace{7em}g(x)=11\implies \stackrel{g(x)}{11}=2x+7 \\\\\\ 4=2x\implies \cfrac{4}{2}=x\implies \implies \boxed{2=x} \\\\[-0.35em] ~\dotfill\\\\ f[90x]\implies f\left[90\left( \boxed{2} \right)\right]\implies f(180)=\stackrel{x}{180}$

You might be interested in

you go to Frontier City with your parents, brother and sister. The cost for adults is $12.50, and the cost for children is $8.00

noname [10]

9514 1404 393

Answer:

cost for adults: 2×$12.50

cost for children: 3×$8.00

total cost: 2×$12.50 +3×$8.00

$49.00

Step-by-step explanation:

Assuming I, my brother, and my sister qualify for children's tickets, we have ...

cost for adults: 2×$12.50

cost for children: 3×$8.00

total cost: 2×$12.50 +3×$8.00

Evaluation:

$25.00 +24.00 = $49.00 . . . . . . . multiplication is performed first

3 0

2 years ago

In an 18-meter race between a tortoise and a hare, the tortoise leaves 23 minutes before the hare. The hare, by running at an av

seropon [69]

We know that:
time=distance/speed
if the tortoise speed is x m/min, then since 0.5 m/hr=1/120 m/min
18/x=23+18/(x+1/120)
solving for x we get:
x=0.08 m/min
speed of hare is:
(0.08+1/120)=0.088 m/min

6 0

2 years ago

For brainiest :):):):):):):)<br> *easy*

xenn [34]

Answer:

8. 12 in

9. 30 ft

10. 87.92 in

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers