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3 years ago

Please help with this problem.

Mathematics

1 answer:

Allushta [10]3 years ago

7 0

Answer:

i'm pretty sure the answer is A

Step-by-step explanation:

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HELP ME PLEASE! I WILL GIVE BRAINLIEST LOTS OF POINTS

azamat

Number the tables as follows:

1 2
3 4

Eliminate 3 and 4 immediately, because for x = 2 the y values are wrong (3 and 1).

In tables 1 and 2, the input (1) produces the correct output (-1).

So we have to determine which table agrees 100% with the system of equations given.

Comparing tables 1 and 2, row by row, we see that their contents are the same EXCEPT for the first rows. So focus on determing which of those 2 rows displays values that satisfy both given equations.

First I looked at y=2x-5, and subst. -1 for x. I got -7, which is correct in table 1 but not in table 2 (where the value would be -13).

Thus, table 1 correct represents the solution of the system of equations.

6 0

3 years ago

Read 2 more answers

How to find vertex form

Nikolay [14]

Y = x^2 - 6x + 7
a = 1
b = -6
c = 7

Before you get the A.O.S, you must first solve for the vertex.
The vertex formula is \frac{-b}{2a}

Plug in the numbers:
-(-6) / 2(1)
--6 = 6 and 2*1 = 2
6/2
Vertex (or x) = 3

Now you have to plug in the x in order to find the vertex (or y)
Your equation should now look like this;
y = (3)^2 - 6 (3) +7
Solve each part separately and then add it up...

3^2 = 9
-6 * 3 = -18
+7

9 - 18 + 7
A.O.S (or y) = -2

7 0

3 years ago

Is.........................

butalik [34]

Answer:

x = -8.

Step-by-step explanation:

Now combine the x terms. We get x - 3y = 136 and 18x + 3y = -288.

Combining these two equations eliminates the y terms, leaving us with:

19x = -152. Solving for x, we get: x = -8. This corresponds to the second answer choice.

3 0

3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!

Alika [10]

Answer:

Size of groups known: First and last questions (The rice and cups ones)

Number of groups known: Second and third questions (Cars and hats)

Step-by-step explanation:

In the first problem, you know that one sack is one group, and it tells you that each sack weighs 3 kg. Therefore, you know the size of the group (or a sack).

In the last one, you know that a table is one group and each table fits 4 cups. So, you know that the size of the group is 4 cups.

In the second and third questions, you know that each group is a row (cars) or "equal group" (hat) and that there are 4 of each. So, you know that there are 4 of each group, meaning you know the "number of groups"

7 0

3 years ago

A summer camp cookout is planned for the campers and their families. there is room for 450 people. each adult costs $7, and each

Yuri [45]

Hence, the required inequality is x+y≤4, 7x+4y≤1150

<h2>What is inequality?</h2>

inequality, In mathematics, a statement of an order relationship—greater than, greater than or equal to, less than, or less than or equal to—between two numbers or algebraic expressions.

<h3>How to solve?</h3>

Let x be the number of adults and y be the number of campers.

There are rooms for 450 people, so

x+y≤450.

Each adult costs $7, then x adults cost $7x.

Each camper costs $4, then y campers cost $4y.

There is a maximum budget of $1,150, so

7x+4y≤1,150

Hence, you get the system of two inequalities:

x+y≤4

7x+4y≤1150

to learn more about inequality: brainly.com/question/16562548

#SPJ4

3 0

2 years ago

Please help with this problem.​

Please help with this problem.