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3 years ago

Answer for brainliest

Mathematics

1 answer:

olganol [36]3 years ago

7 0

Answer:

ok its 496

Step-by-step explanation:

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Find the solution to the system of equations-2 + 2y = -4 3x + 3y = -18

AfilCa [17]

Answer:

$\boxed{x = -2~~and~~ y = -4}$

Step-by-step explanation:

-2x + 2y = -4 (times 3) -6x + 6y = -12

3x + 3y = -18 (times 2) 6x + 6y = -36

-6x + 6y = -12

<u>6x + 6y = -36 </u>+

12y = -48

$y = \frac{-48}{12}$

y = -4

Substitute the value of y to the one of equations

-2x + 2(-4) = -4

-2x - 8 = -4

-2x = -4 + 8

-2x = 4

$x = \frac{4}{-2}$

x = -2

4 0

3 years ago

Read 2 more answers

What is the solution to the open sentence?

choli [55]

The answer would be c

8 0

3 years ago

Alicia is making cupcakes for a party she is having and wants to make sure everyone gets at least one cupcake. The recipe calls

Liula [17]

$\frac{84}{21}=4$

Therefore you need 4 batches of cupcakes if you want <u>every person to get one cupcake</u>.

This means you multiply the amount of salt <em>per batch</em> by the number of batches, to get the total amount of salt you need.
Each batch contains <em>1 teaspoon of salt</em> for 21 cupcakes. Multiply: $4\text{ batches of cupcakes}\times1\text{ teaspoon of salt}=4\text{ teaspoons salt}$ for the whole thing.

6 0

3 years ago

The graph of the function, B(x), is shown below. Determine the following values for the function:

Softa [21]

Answer:

$B(-1) = 1\\\\B(3) = 0\\\\B(1) =2$

Step-by-step explanation:

By definition, a relation is a function if each input value has one and only one output value.

The input values are the x-values and the output values are the y-values.

Given:

$B(-1),B(3)$ and $B(1)$

We can identify that we need to find the output values of these input values:

$x=-1\\x=3\\x=1$

Observe in the graph attached that:

When $x=-1,\ y=1$

When $x=3,\ y=0$

When $x=1,\ y=2$

Therefore:

$B(-1) = 1\\\\B(3) = 0\\\\B(1) =2$

7 0

3 years ago

Mariana is taking a multiple choice test with a total of 80 points available. Each question is worth exactly 4 points. What woul

Sladkaya [172]

Mariana's score if got right if she got 5 wrong is 60 points.

Mariana's score if got right if she got xx wrong is 80 - 4xx.

<h3>What is Mariana's score?</h3>

The first step is to determine the number of questions that Mariana got right. In order to get the number of questions that she got right, subtract the total number of number of questions from the questions that he got wrong.

Questions that Mariana got right = total number of questions - questions he got wrong

Total number of questions = total number of points / point of each question

Total number of questions = 80 / 4

Total number of questions = 20

Questions that Mariana got right if he got 5 wrong = 20 - 5 = 15

Mariana's score = questions she got right x number of points per question

Mariana's score = 15 x 4 = 60 points

Questions that Mariana got right if he got x wrong = 20 - xx

Mariana's score = (20 - xx) x 4

Mariana's score = 80 - 4xx

To learn more about scores, please check: brainly.com/question/28627499

#SPJ1

6 0

2 years ago