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m_a_m_a [10]
4 years ago
15

How do you solve this using substitution? -x+y=1 x+y=-1

Mathematics
1 answer:
Alexeev081 [22]4 years ago
4 0
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form: (-1,0)
Equation form: x=-1,y=0
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A gallon of water is equal to 231 cubic inches. How many gallons of water are needed to fill a fish tank that measures 11" high,
9966 [12]
We know that

[volume of a fish tank]=11*14*9-------> 1386 in³

if  1 gallon--------------> 231 in³
X------------------------> 1386 in³
X=1386/231-------> X=6 gallon

the answer is
<span>are needed 6 gallons of water to fill a fish tank</span>
3 0
3 years ago
Ammar is constructing an angle congruent to ∠MNP . With his straightedge, he draws and labels DE−→− . He places the compass poin
Svetlanka [38]

Ammar's next step is point C

<h3>Further explanation </h3>

Angles can be formed from two ray lines that have the same starting point

Commonly used terms include foot angle, corner point, and angle size

The magnitude of the angle is usually expressed in degrees

Naming angles can be with one letter according to the vertex or with three letters with the vertex placed between two other letters

There are several steps used to copy the MNP angle:

1. Draw the DE line

2.Places the compass point on point N and draws an arc that intersects NM (point Q) and NP (Point R)

3.Without changing the compass opening, put the compass point on point D and draw a long arc that intersects DE (point F)

4. Open the compass so that the compass point is on point Q and the pencil point is on point R. Then put the compass point on point F and draw an arc (intersect with the arc in step 3, and at this point we name it G)

5. Draw a line from point D to point G

Then the MNP is congruent to the EDG

<h3>Learn more </h3>

ABC copying angle

brainly.com/question/13096001

Keywords: angle, copying, compass, arc

  #LearnWithBrainly

6 0
3 years ago
A tree height when planted was 5ft. 8inches. It has grown 14ft. 10 inches how much did it grown
Serjik [45]

Answer:

Subtraction will happen in this case.
14ft-5ft= 9ft
10 inches-8 inches= 2 inches
So, it grew 9ft. and 2 inches.

3 0
2 years ago
What is the difference between a day and a line segment
zepelin [54]

Hello!

I do believe you meant to say:

"What is the difference between a <em>ray</em> and a line segment?"

The difference between a ray and a line segment is:

A ray has one endpoint and continues in one direction. a ray is infinite

A line segment has two endpoints. a line segment is finite

I hope this helps, and have a nice day!

5 0
3 years ago
What is the density of a 60-gram pyramid with rectangular base 5 cm x 7 cm and height 9 cm?
JulijaS [17]

Answer:

0.571428571429 grams per cm³

Step-by-step explanation:

density = mass/volume

Let’s calculate the volume V of the pyramid :

V = (1/3)×base×height

   = (1÷3)×(5×7)×9

   = 105 cm³

Then

The density = mass/volume

                    = 60÷105

                    = 0.571428571429

4 0
2 years ago
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