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3 years ago

10

Help me with this asap

2 answers:

lisov135 [29]3 years ago

3 0

X< 11, this is going to be you’re answer

vodka [1.7K]3 years ago

3 0

C, arrow going left closed circle on a line means greater than equal to!

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Stu trained for a triathlon for 5 hours yesterday. He ran 5 miles and then biked 80 miles. His biking speed is 15 mph faster tha

lara31 [8.8K]

Answer:

Step-by-step explanation:

Given as :

The distance cover while running = $D_1$ = 5 miles

Let The speed for running = $S_1$

The distance cover with bike = $D_2$ = 80 miles

The speed for biking = $S_2$ = 15 mph + $S_1$

Total Time taken = 5 hours

Now Time = $\dfrac{\textrm Distance}{\textrm Speed}$

∴ 5 hour = $\frac{D_1}{S_1}$ + $\frac{D_2}{S_2}$

Or, 5 hour = $\frac{5}{S_1}$ + $\frac{80}{15+S_1}$

Or, 5 hour = $\frac{75 + 5 S_1 + 80 S_1}{S_1(15+S_1)}$

or, 5 × ( $S_1^{2}+15 S_1$ ) = $85 S_1 + 75$

Or, $5 S_1^{2} + 75 S_1$ - $85 S_1 - 75$ = 0

or, $5 S_1^{2} -10 S_1 - 75$ = 0

or, $S_1^{2} -2 S_1 - 15$ = 0

Or, $S_1^{2} -3 S_1 + 5 S_1- 15$ = 0

Or, $S_1 (S_1 - 3) + 5 (S_1 - 3)$ = 0

Or, $(S_1 - 3) ( S_1 + 5 )$ = 0

∴ $S_1$ = 3 , - 5

So, the running speed = 3 mile per hour

And the biking speed = 15 mph + 3 mph = 18 mile per hour

Hence The running speed of Stu is 3 mile per hour . Answer

7 0

3 years ago

You purchased xyz common shares for $45 per share one year ago. one year later aftering receiving $4 dividend per share, you sol

Pepsi [2]

<span>The return for the investment is C, or 15.56%. You add the dividend and the capital gain, $4+$3=$7, and then divide by the initial investment price, or $45. 7/45=.1556, or 15.56%.</span>

7 0

2 years ago

Make a proportional statement to solve for x <br><br> PLZ HELPLPLPLPLPL

lana66690 [7]

22/32 = 100/x
22x = 100(32)
22x = 3200
x = 3200/22
x = 145.45 ft

5 0

3 years ago

Add up all the numbers in existence together.

Romashka-Z-Leto [24]

Wouldn’t that just be infinitely?

7 0

2 years ago

Is 2/5 and 8/20 equivalent

dolphi86 [110]

Yes!
explanation:
8 divided by 4 equals 2 and 20 divided by 4 is 5

4 0

2 years ago

Read 2 more answers