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4 years ago

Which statement is true

Mathematics

1 answer:

Step2247 [10]4 years ago

7 0

The first statement is true because 10 x 50 = 500

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Please help and show work

mestny [16]

18- 5x
19- 6x
I'm not sure but I had a test like this

7 0

3 years ago

Please help!<br><br> -1 1/3 ÷ 2 2/5=

muminat

The answer to this equation is -1/15

7 0

2 years ago

Read 2 more answers

Nts) in a certain population of voters, 72% of them plan to vote in favor of a new

Ganezh [65]

Answer:

Probability that 10 of them plan to vote against this piece of proposed legislation is 0.0701 or 7.01 %.

Step-by-step explanation:

Consider the event of voting against the piece as success, 'p'. So, voting in favor of the piece is failure and denoted by 'q'.

Given:

Sample size is, $n=25$

Probability of failure is, $q=72\%=0.72$

Therefore, probability of success is, $p=1-q=1-0.72=0.28$

Number of successes is, $x=10$

Now, from Bernoulli's distribution, probability of $x$ successes out of $n$ samples is given as:

$P(X=x)=_{n}^{x}\textrm{C}p^xq^{n-x}$

Here, $n=25,x=10,p=0.28,q=0.72$ . Therefore,

$P(X=10)=_{25}^{10}\textrm{C}(0.28)^{10}(0.72)^{25-10}\\P(X=10)=_{25}^{10}\textrm{C}(0.28)^{10}(0.72)^{15}\\P(X=10)=3.269\times 10^{6}\times 2.962\times 10^{-6}\times 7.244\times 10^{-3}\\P(X=10)=70.142\times 10^{-3}=0.0701=7.01\%$

Therefore, probability that 10 of them plan to vote against this piece of proposed legislation is 0.0701 or 7.01 %.

8 0

3 years ago

physics convention 11 companies set up equal sized square booths in a row along one wall of a convention center.The booths are a

givi [52]

Answer:

Side length of each booth is 8.35 ft approximately.

Step-by-step explanation:

There are 11 companies set up equal sized square booths in a row along one wall of a convention center.

Now, refer the diagram to answer the problem.

It is given area is 1200.

So, length x width =1200

(11x+24)(x+2)=1200

Multiply using FOIL method.

$11x^{2}$ +22x+24x+48=1200

$11x^{2}$ +46x+48-1200=0

$11x^{2}$ +46x-1152=0

Solve using quadratic formula

x= $\frac{-46+/- \sqrt{46^{2}-4(11)(-1152 } }{2(11)}$

x= $\frac{-46+/-\sqrt{2116+50688} }{22}$

x= $\frac{-46+/-\sqrt{52804} }{22}$

Simplify it

$x=\frac{-49+/- 229.79}{22}$

Simplify to get two values for x.

x=8.35; x=-12.67

Here negative does not work.

Side length of each booth is 8.35 ft.

3 0

3 years ago

Follow the steps to solve for the variable in this two-step equation: 5×-10=0

lorasvet [3.4K]

Answer:

x=2

Step-by-step explanation:

5x-10=0 add 10 on both sides

+10 +10

-------------- -10-10=0

0+10=10

5x=10

5x=10 divide 5x by 5 and 10 divided by 5

--- ---

5 5

x=2 because 10 divided by 5=2

5 0

3 years ago