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Rzqust [24]
2 years ago
7

State the dimensions of the matrix. identify the indicated element​

Mathematics
1 answer:
dalvyx [7]2 years ago
6 0

Answer:

A

Step-by-step explanation:

In a matrix we go by row, then column so 2 rows and 3 columns

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maria bought g gallons of gas, spending a total of $41.49. Each gallon of gas costs 3.68. How many gallons of gas did maria buy?
dangina [55]

Answer:

She bought 12 gallons.

41.49 / 3.68 = 11.2

*I rounded it to 12 because you can't go below 11.2*

12 x 3.68 = 41.49

6 0
3 years ago
Read 2 more answers
If the perpendicular bisector of one side of a triangle goes through the opposite vertex, then is the triangle isosceles?
Ne4ueva [31]

Answer:

True

Step-by-step explanation:

The perpendicular bisector of the opposite side to the vertex bisects the angle at the vertex into two equal parts and also bisects the triangle into two equal parts.

Let A be the angle at the vertex, then assume that the angle is an isosceles triangle with base angles B.

We need to show that A = 180 - 2B for an isoceles triangle

The perpendicular bisector bisects A into two so the new angle in the vertex one half of the bisected triangle is A/2.

Since this half triangle is a right-angled triangle, the third angle in it is 90.

So, A/2 + B +  90 = 180 (Sum of angles in a triangle)

subtracting 90 from both sides, we have

A/2 + B + 90 - 90 = 180 - 90

A/2 + B = 90

subtracting B from both sides, we have

A/2 + B = 90

A/2 = 90 - B

multiplying through by 2, we have

A = 2(90 - B)

A = 180 - 2B

Since A = 180 - 2B, then our triangle is an isosceles triangle.

7 0
3 years ago
A student got 68% of the questions correct on the Social Studies test. If there were 50 questions, how many questions did they g
kaheart [24]

Answer:

The answer is 34.

8 0
3 years ago
Read 2 more answers
Please help I really need help on this I would really appreciate it anything helps !
andreev551 [17]

Answer:

<em>AXE</em> and <em>CXD  </em>are vertical angles

<em>AXF</em> and <em>FXD  </em>are supplementary angles

<em>DXC </em>and <em>BXC  </em>are complementary angles

<em>EXA</em> and <em>AXB  </em>are adjacent angles

<em>AXC </em>and <em>CXD</em>  are supplementary angles

<em>EXD </em>and <em>AXC </em>are vertical angles

Step-by-step explanation:

6 0
3 years ago
I need to solve this problem using the substitution method. I keep getting crazy numbers so I’m definitely doing something wrong
Oksanka [162]

Answer:

S=3 R=1

Step-by-step explanation:

3x1+3=6

1+(3x3)=10

3x3=9

9+1=10.

4 0
3 years ago
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