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Oxana [17]
4 years ago
13

Solve 7x + 5y = 14 using matrices. 4x + 3y = 9

Mathematics
1 answer:
ipn [44]4 years ago
6 0
28x+20y =14*4 = 56
28x + 21y = 9*7 =56
 => y=0, x = 2

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Nadia's class took a math test. The median score on the test was 72% and the mean of the test scores was 72%.
g100num [7]

Answer:

C, or "The data is symmetrically"

Step-by-step explanation:

This is because when having both the median and the mean the same, this means their is a perfectly symmetrical distribution of data. Making both the mean and median the same.

7 0
3 years ago
During the work week, a person worked 55 hours, for how many hours do they get Overtime Pay?
Zanzabum
15 extra hours they get overtime
6 0
3 years ago
Which of these is a perfect cube?<br> 2<br> 4<br> 7.5<br> 8
Monica [59]

Answer:

8 is a perfect cube

Step-by-step explanation:

8 = 2^3

4 0
3 years ago
Read 2 more answers
2+(5+y) I need help pls! If you know the answer to this problem, please explain, THANK YOU!!!
anzhelika [568]

Answer:

y= -7

Step-by-step explanation:

I'm not sure if this is what you are looking for but here you go!

If the equation is set equal to zero.

2+(5+y)=0          This is the original expression, we need to find the value for y.

5+y= -2              We move the two to the right to remove it from the left side of                    

                          the equation.

y= -7                   We repeat the same thing as we did in the last step, except              

                          with the value 5. This then gives us our y-value, which is -7.

I hope this helps!

7 0
4 years ago
Read 2 more answers
Use the Side, Side, Side Rule (SSS) to prove that the triangles in each pair are congruent. Draw hash marks to show the congruen
weeeeeb [17]

Answer:

(1) ΔMAN ≅ ΔBOY

(2) ΔMAT ≅ ΔRUG

(3) ΔEBN ≅ ΔUHR

(4) ΔTOP ≅ ΔLID

(5) ΔCAT ≅ ΔDOG

(6) ΔITP ≅ ΔLOH

Step-by-step explanation:

The following combinations of the congruent triangle facts will be sufficient to prove triangles congruent.

The combinations are:

(1) SSS (side-side-side) : If three sides of a triangle are congruent to three sides of another triangle then the triangles are congruent.

(2) SAS (side-angle-side) : If two sides and included angle of a triangle are congruent to another triangle then the triangles are congruent.

(3) ASA (angle-side-angle) : If two angles and included side of a triangle are congruent to another triangle then the triangles are congruent.

(4) RHS (right angle-hypotenuse-side) : If the hypotenuse and leg of one right triangle are congruent to the corresponding parts of another right triangle, the right triangles are congruent.

Part (1):

As we are given two triangles.

Side AM = Side OB

Side MN = Side BY

Side AN = Side OY

That means,

ΔMAN ≅ ΔBOY

Part (2):

As we are given two triangles.

Side MA = Side RU

Side MT = Side RG

Side AT = Side UG

That means,

ΔMAT ≅ ΔRUG

Part (3):

As we are given two triangles.

Side EB = Side UH

Side BN = Side HR

Side NE = Side RU

That means,

ΔEBN ≅ ΔUHR

Part (4):

As we are given two triangles.

Side OT = Side IL

Side OP = Side ID

Side PT = Side DL

That means,

ΔTOP ≅ ΔLID

Part (5):

As we are given two triangles.

Side AC = Side OD

Side AT = Side OG

Side TC = Side GD

That means,

ΔCAT ≅ ΔDOG

Part (6):

As we are given two triangles.

Side TP = Side OH

Side IT = Side LO

Side IP = Side LH

That means,

ΔITP ≅ ΔLOH

6 0
3 years ago
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