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3 years ago

Can any one help me with this one

Mathematics

2 answers:

Svetlanka [38]3 years ago

7 0

Answer:

5x+10=10+11+121

5x+10=142

5x=132

x=26.4

Step-by-step explanation:

1. Set the problem out like shown above.

2. Add the numbers EXCEPT the variable

3. Subtract so that the variable can be by itself then divide

4. X is whatever answer you get

Hope this helped ya!

VMariaS [17]3 years ago

3 0

Use Thales' theorem..

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Evaluate 19C1 PLEASE HELP

LiRa [457]

Answer:

${19}C_1=19$

Step-by-step explanation:

We need to find the value of ${19}C_1$ .

C stands for combination.

The formula of combination is as follows :

$nC_r=\dfrac{n!}{r!(n-r)!}$

Here,

n = 19 and r = 1

So,

$nC_r=\dfrac{19!}{1!(19-1)!}\\\\nC_r=\dfrac{19!}{1!\times 18!}\\\\nC_r=\dfrac{19\times 18!}{1!\times 18!}\\\\nC_r=19$

So, the value of ${19}C_1$ is 19.

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3 years ago

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solmaris [256]

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3 years ago

Find the area of the cross section that is parallel to the bases.

ElenaW [278]

The correct one would be a 1122

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3 years ago

PLEASE HELP!! I WILL BRAINLIEST

ArbitrLikvidat [17]

Answer:

81.8%

Step-by-step explanation:

Mean = $\mu = 40$

Standard deviation = $\sigma = 5$

Now we are supposed to find out what percent of the numbers fall between 35 and 50

$z = \frac{x-\mu}{\sigma}$

Substitute the values

$z = \frac{x-40}{5}$

Now for P(35<x<50)

Substitute x = 35

$z = \frac{35-40}{5}$

$z =-1$

Substitute x = 50

$z = \frac{50-40}{5}$

$z =2$

So, P(-1<z<2)

P(z<2)-P(z<-1)

=0.9772-0.1587

=0.8185

= $0.818 \times 100$

=81.8%

Hence 81.8% percent of the numbers fall between 35 and 50

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3 years ago

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