All categories

3 years ago

2х - Зу = 32 x + 4у = -20 solve the system of equations

1 answer:

5 0

Answer: x=68/11 and y=-72/11

Steps:

2(x+4y=-20)

2x+8y=-40

2x - 3y = 32
- 2x + 8y = -40

-11y=72

y=-72/11

x + 4(-72/11) = -20

x - 288/11 = -20

x=68/11

You might be interested in

I’m confused with this problem

Mamont248 [21]

(7)^2+(8)
(49)+(8)= 57

4 0

3 years ago

Ummmmm??? Is it c? Irdk

bija089 [108]

Answer:

Yes

Step-by-step explanation:

8 0

3 years ago

The variance of any standard normal distribution is________.<br> a) 0.5.b) -0.5.c) 0.d) 1.

goblinko [34]

Answer:

d) 1

Step-by-step explanation:

The variance of standard normal distribution is simply put as 1.

If you take it a bit further, even though not asked, the mean of a standard normal distribution is 0.

Therefore, the conclusion is that, the variance of a standard normal distribution is 1, while the mean of the same standard normal distribution is 0

3 0

3 years ago

Draw the reflected image of ABCD over line l.

Alina [70]

Answer: The second image, the second image where b' is right above b is the correct answer for this, hope this helped!

<!> Brainliest is appreciated! <!>

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Ana's fifth-grade class is making a large batch

harina [27]

Answer: 125 full servings

Step-by-step explanation:

The ingredients and the ounces used for each one are in the image attached.

So, we have to sum all the ounces that compound the fruit punch and obtain a total:

$240 oz+480 oz+640 oz+150oz=1510 oz$

Now we have to divide this total by 12 oz/portion:

$\frac{1510 oz}{12 oz/portion}=125.83 \approx 125 portions$

This means the class can make 125 full portions or full servings

4 0

3 years ago