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lord [1]
3 years ago
8

What is y ? Please help

Mathematics
2 answers:
masya89 [10]3 years ago
8 0
Y=6
Here's how it works.
We know x=3 because 4x3+1 = 13, which is the same as the other side. 
Then if we do 2x3+6=12
And then 8x3-2x6=12
Now we know the bases are equal, therefore Y=12

Hope this helps
jonny [76]3 years ago
3 0
The first thing you should do is make the equation 4x+1=13 to find x. You then remove 1 from each side to get 4x=12, and then you divide by 4 to get x=3.

The next thing you do is make the equation -2y+8(3)=y+2(3)
Which simplified is -2y+24=y+6. You then add 2y to each side and remove 6 from each side to get the 18=3y. You then divide by 3 to get y=6.
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Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 7 minutes. De
Gala2k [10]

Answer:

The probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

Step-by-step explanation:

Let the random variable <em>X</em> represent the time a child spends waiting at for the bus as a school bus stop.

The random variable <em>X</em> is exponentially distributed with mean 7 minutes.

Then the parameter of the distribution is,\lambda=\frac{1}{\mu}=\frac{1}{7}.

The probability density function of <em>X</em> is:

f_{X}(x)=\lambda\cdot e^{-\lambda x};\ x>0,\ \lambda>0

Compute the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning as follows:

P(6\leq X\leq 9)=\int\limits^{9}_{6} {\lambda\cdot e^{-\lambda x}} \, dx

                      =\int\limits^{9}_{6} {\frac{1}{7}\cdot e^{-\frac{1}{7} \cdot x}} \, dx \\\\=\frac{1}{7}\cdot \int\limits^{9}_{6} {e^{-\frac{1}{7} \cdot x}} \, dx \\\\=[-e^{-\frac{1}{7} \cdot x}]^{9}_{6}\\\\=e^{-\frac{1}{7} \cdot 6}-e^{-\frac{1}{7} \cdot 9}\\\\=0.424373-0.276453\\\\=0.14792\\\\\approx 0.148

Thus, the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

6 0
3 years ago
Pls help asapp picture attached
Olin [163]

Answer:

50

Step-by-step explanation:

Angle 1 is 110.

Angle 3 is 2x plus 10.

Angle 1 and 3 are vertically opposite angles.

And vertically opposite angles r equal.

Which means, angle 1=angle 3,and angle 2=angke 4.

Here we only Need angle 2 and 3.

Angke 2= angle 3.

Which is 2x plus 10=110.

Therefore 2x=110-10=100

Therefore x = 100÷2=50

There u have it ma'am.

3 0
3 years ago
Read 2 more answers
Can i have some help
Katarina [22]

Answer:

I am so sorry but the link will not let me see the question

Step-by-step explanation:

could you put a screen shot of the question and maybe i could try to help :)

3 0
3 years ago
Each of 28 students in Romi’s class raised at least $25 during jump-a-thin. What is the least amount of money the class raised
Anna [14]
28 x 25 = $700

Answer: The class raises at least $700.
3 0
3 years ago
Read 2 more answers
Numărul cu 289 mai mic decât 812
blondinia [14]

Answer:

The number is 523

Step-by-step explanation:

<u><em>The question is English is</em></u>

Number 289 less than 812

Let

x ----> the number

To find out the number subtract 289 from 812

so

812-289=523

therefore

The number is 523

4 0
3 years ago
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