Find value of x and y

2.) 4x+13y=40
4x+3y=-40

Answers

Answer 1

Answer: $\left\{\begin{array}{ccc}4x+13y=40\n4x+3y=-40&/\cdot(-1)\end{array}\right\n+\left\{\begin{array}{ccc}4x+13y=40\n-4x-3y=40\end{array}\right\n-----------\n.\ \ \ \ \ \ 10y=80\ \ \ \ /:10\n.\ \ \ \ \ \ y=8\n\n4x+3\cdot8=-40\n4x+24=-40\n4x=-40-24\n4x=-64\ \ \ \ /:4\nx=-16\n\nSolution:x=-16\ and\ y=8.$

Answer 2

Answer: 4x + 13y = 40
4x + 3y = -40
using elimination method
10y = 80
y = 8
substitute y in eq1
4x + 13(8) = 40
4x + 104 = 40
4x = 40 - 104
4x = - 64
x = -16

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HELP ILL GIVE BRAINLY IF RIGHT !ROYGBIV is an
a.
Acronymic sentence
c.
Flashcard
b.
Acronymic abbreviation
d.
None of these

Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

Step-by-step explanation:

im pretty sure its c soo

Step-by-step explanation:

C because tjejkeksso akkaka

A recipe for a vegetable dish contains a total of 924 calories the dish to serve six people how many calories are in each serving

Answers

Answer:

The amount of calories in each servings is 154 calories.

Step-by-step explanation:

A recipe for a vegetable dish contains a total of 924 calories.

This can serve six people.

So, dividing the total amount of calories by the total number of people will yield the amount of calories in each servings.

Hence, amount of calories present in each serving is,

$=(924)/(6)$

$=154\text{ calories}$

Therefore, the amount of calories in each servings is 154 calories.

924 divided by 6= 154 per serving

Hope this helps!

A set of data with a mean of 45 and a standard deviation of 8.3 is normally distributed. Find the value that is –2 standard deviations away from the mean.

Answers

45+8.3 = 53.3

45 - (2(8.3)) = 28.4

The value is 28.4 that is –2 standard deviations away from the mean.

Answer: 28.4

Step-by-step explanation:

Given : A set of data with a mean of $\mu= 45$ and a standard deviation of $\sigma=8.3$ is normally distributed.

Now, the value that is –2 standard deviations away from the mean is given by :-

$x=\mu-2\sigma\n\n\Rightrrrow\ x=45-2(8.3)\n\n\Rightarrow\ x=45-16.6\n\n\Rightrrrow\ x=28.4$

Hence, the value that is –2 standard deviations away from the mean. = 28.4

What is the ordered pair is the vertex of y=-|x+4|

Answers

Answer: The vertex of the given function is (-4,0).

Step-by-step explanation:

Since, the standard form of an absolute function is,

y = a|x-h| + k

Where (h,k) is the vertex of the function,

Here, the given function is,

y = -|x+4|

⇒ y = (-1)|x-(-4)| + k

By comparing,

We get, a = -1, h = -4 and k= 0

Hence, the vertex of the given function is (-4,0).

$vertex:\n\nx+4=0\to x=-4\n\nvertex\ is\ (-4;\ 0)\n\nlook\ at\ the\ picture$

Renee is playing a game with marbles and a spinner. The spinner has four sections: orange, black, purple, and white. The marbles are kept in a bag and come in three colors: orange, black, and purple. Renee first spins the spinner and then picks a marble from the bag without looking. What is the probability that the color of the marble matches the color on which the spinner lands? brainly

Answers

Answer:

$(1)/(16)$ Is the chance of the colours matching.

Step-by-step explanation:

The possibility of the spinner landing on an orange side is $(1)/(4)$

and the possibility of the marble being orange is $(1)/(4)$ in this case you have to remember, in the fraction, you have 4 possibilities and 1 desirable outcome, when you have two dependant possibilities you have to multiply them:

$(1)/(4) * (1)/(4)$