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jeka57 [31]
3 years ago
7

Explain your answer !! Will give brainlst

Mathematics
1 answer:
Olegator [25]3 years ago
5 0

Answer:

x=-17

y=-2 2/3

Step-by-step explanation:

start with the second one and do substitution

x -6y=-1 add the -6y over to get x alone

x=6y-1 put this into first equation

2(6y-1)-15y=6 distribute

12y-2-15y=6 add like terms

-3y-2=6 add the -2 over

-3y=8 divide by -3

y=-2 2/3 put this back into the first equation that was solved for x

x=6(-2 2/3)-1 distribute

x=-17

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Sally measured the height of a flower growing in her garden. The flower was 3 1 4 inches tall. Over the next week, the flower gr
jekas [21]

Answer:

5 1/8

Step-by-step explanation:

Just add and get a common denominator

3 0
3 years ago
<img src="https://tex.z-dn.net/?f=12%20%5Cfrac%7B1%7D%7B3%7D%20%5Cdiv%202" id="TexFormula1" title="12 \frac{1}{3} \div 2" alt="1
aev [14]

Answer:

37/6

Step-by-step explanation:

Simplify the following:

(12 + 1/3)/2

Put 12 + 1/3 over the common denominator 3. 12 + 1/3 = (3×12)/3 + 1/3:

((3×12)/3 + 1/3)/2

3×12 = 36:

(36/3 + 1/3)/2

36/3 + 1/3 = (36 + 1)/3:

((36 + 1)/3)/2

36 + 1 = 37:

(37/3)/2

37/3×1/2 = 37/(3×2):

37/(3×2)

3×2 = 6:

Answer: 37/6

3 0
3 years ago
Examples of a TRUE biconditional statement, please.
andrey2020 [161]

Answer: two angles have the same measure if only and only if they are congruent

explanation:

A true biconditional statement is true both "forward" and backward". All definitions can be written as true biconditional statements.

7 0
3 years ago
Every parallelogram is a square?
saul85 [17]

Answer:

every parallelogram is a square? False

every rectangle with four congruent sides is a square? True

every rectangle is a quadrilateral? True

every quadrilateral is a rectangle?​ False

Step-by-step explanation:

every parallelogram is a square?

A parallelogram has two opposite pairs of parallel lines and opposite congruent sides. A square needs to have 4 right angles and all sides need to be equal. In the restrictions of a parallelogram, these cannot be concluded, therefore parallelogram are not always squares.

every rectangle with four congruent sides is a square?

Square require 4 congruent sides and 4 right angles. Rectangles already have  4 right angles. If you add 4 congruent sides to the mix, it means that these rectangles are always squares.

every rectangle is a quadrilateral?

A quadrilateral is defined by a shape having 4 sides. Rectangles have 4 sides, so they fit into the category of quadrilaterals.

every quadrilateral is a rectangle?​

A quadrilateral is a just a shape with four sides. We do not know if it has 4 right angles, so not every quadrilateral is a rectangle.

5 0
3 years ago
The price of a stock went up by $1.20 on Monday, down by $2.30 on Tuesday, down by $1.00 on Wednesday, down by 1.80 on Thursday,
alukav5142 [94]

Answer:

The mean change of the stock price of those 5 days is $1.34.

Step-by-step explanation:

First let's list the differences then find the mean.

1.20, 2.30, 1.00, 1.80, 0.40

Now we add up all of the numbers and divide by how many numbers there are.

Mean = 1.34

The mean change of the stock price of those 5 days is $1.34.

8 0
3 years ago
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