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3 years ago

PLS HURRY ONLY CORRECT ANSWERS 50 POINTS NEED THIS IN ONE HOUR

Mathematics

2 answers:

Dmitry_Shevchenko [17]3 years ago

6 0

Answer:

250=70x+50

Step-by-step explanation:

Bond [772]3 years ago

5 0

Part A: 70x+50=$250

Part B: 75x-5x+$35=$250

They differ because in Part A they don't lose any money and just gain it, while in part B they lose money, while gaining more in part A.

not 100% sure on Part B

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On Sunday Lindsay rode her bikeb3 times as far as she did on Saturday. On Saturday she rode 3 miles. How far did she ride on Sun

Naddik [55]

Answer:

9 miles

Step-by-step explanation:

3 times 3 is 9

7 0

2 years ago

Suppose that prior to conducting a coin-flipping experiment, we suspect that the coin is fair. How many times would we have to f

BabaBlast [244]

Answer:

153 times

Step-by-step explanation:

We have to flip the coin in order to obtain a 95.8% confidence interval of width of at most .14

Width = 0.14

ME = $\frac{width}{2}$

ME = $\frac{0.14}{2}$

ME = $0.07$

$ME\geq z \times \sqrt{\frac{\widecap{p}(1-\widecap{p})}{n}}$

use p = 0.5

z at 95.8% is 1.727(using calculator)

$0.07 \geq 1.727 \times \sqrt{\frac{0.5(1-0.5)}{n}}$

$\frac{0.07}{1.727}\geq sqrt{\frac{0.5(1-0.5)}{n}}$

$(\frac{0.07}{1.727})^2 \geq \frac{0.5(1-0.5)}{n}$

$n \geq \frac{0.5(1-0.5)}{(\frac{0.07}{1.727})^2}$

$n \geq 152.169$

So, Option B is true

Hence we have to flip 153 times the coin in order to obtain a 95.8% confidence interval of width of at most .14 for the probability of flipping a head

6 0

2 years ago

Which are whole numbers ? 0,4,-2,2/3,-1.8,16,3.2,-5/4

Rasek [7]

Answer:

0,4,16

Step-by-step explanation:

i hope that helps

7 0

2 years ago

Read 2 more answers

Evaluate using the order of operation 3/4+5/6÷2/3

Novosadov [1.4K]

3/4+5/6 divided by 2/3 is 8/4 or 2
Do 5/6 divided by 2/3 first to get 5/4
then use 5/4 to +3/4 and the answer is 8/4 or 2

5 0

3 years ago

Find the exact length of the third side.<br> 10<br> 24

Nuetrik [128]

Step-by-step explanation:

10×10+24×24= third side ×third side

third side ×third side =100+576

third side × third side=676

third side=√676

third side=26

8 0

2 years ago