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2 years ago

12

Please answer soon, will give brainliest!! A system of equations is created by using the line represented by 2 x + 4 y = 0 and t

he line represented by the data in the table below. x y –1 8 3 –4 5 –10 6 –13 What is the x-value of the solution to the system?

2 answers:

melamori03 [73]2 years ago

8 0

I would be 2 because I did the math

kvasek [131]2 years ago

7 0

Answer:

it's 2!

Step-by-step explanation:

You might be interested in

What is "three hundred nineteen thousandths" in decimal form

steposvetlana [31]

Answer:

319/1000= 0.319

Your welcome Brainliest plz

6 0

3 years ago

In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal dist

Tcecarenko [31]

Answer:

a. 0.7291

b. 0.9968

c. 0.7259

Step-by-step explanation:

a. np and n(1-p) can be calculated as:

$np=23\times 0.48\\\\=11.04\\\\n(1-p)=23(1-0.52)\\\\=11.96$

#Both np and np(1-p) are greater than 5, hence, normal approximation is most appropriate:

$\mu_x=11.04\\\\\sigma^2=np(1-p)=0.48\times 0.52\times 23=5.7408$

#Define Y:

Y~(11.04,5.7408)

$P(X\leq 12)\approx P(Y\leq 12.5)\\\\P(Z\leq \frac{(12.5-11.04)}{\sqrt{5.7408}})=\\\\=1-0.2709\\\\=0.7291$

Hence, the probability of 12 or fewer is 0.8291

b. The probability that 5 or more fish were caught.

#Using normal approximation:

$P(X \geq 5) \approx P(Y \geq 4.5) = P(Z \geq\frac{ (4.5-11.04)}{\sqrt{(5.7408)}})\\\\=1-0.0032\\\\=0.9968$

Hence, the probability of catching 5+ is 0.9968

c. The probability of between 5 and 12 is calculated as;

-From b above $P(X\geq 5)=0.9968$ and a , $P(X\leq 12)$ =0.7291

$P(5\leq X\leq 120\approx P(4.5\leq Y\leq 12.5)\\\\=0.7291-(1-0.9968)\\\\=0.7259$

Hence, the probability of between 5 and 12 is 0.7259

4 0

3 years ago

Evaluate ab – 0.55 when a<br> 1 and b = 5.

katrin [286]

1(5)-0.55=
5-0.55= 4.45

5 0

3 years ago

The product of 9 and a number is 12 less than three times that number.<br><br> What is the number?

Alenkasestr [34]

So let me give you the answer with procedure so that you can understand it better:
Let x = Number

<span>Product of 9 and Number:</span>
<span>9x </span>
<span>is 12 less than 3 times that number. So: </span>
<span>3x - 12 </span>
<span>Set them equal and solve for x like this:</span>
<span>9x = 3x - 12 </span>
<span>6x = -12 </span>
<span>x = -2
</span>I hope this is very useful for you

5 0

3 years ago

Can someone help me with my last homework question, please show the work and explain what you did so I can understand! if you do

ruslelena [56]

Ok, so I worked out the problem.

So for part a) you just multiply 8 by 25% then add the product to get the new perimeter.

Part B you Add all sides for the original square and the new square to get the perimeters of each then you divide the old square perimeter by the new square perimeter to get the percentage.

Part C you get the areas pf bother squares then divide the old square area by the new square area to get the percentage change.

If you have any questions, let me know.

4 0

3 years ago