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2 years ago

Solve the simultaneous linear equations by using the elimination method

Mathematics

1 answer:

neonofarm [45]2 years ago

6 0

Answer:

3a -3b= -9

3a - 4b = -5

-------------------

b=-4

4a- 4b= -12

3a - 4b = -5

-------------------

a = -7

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How can I find a? (Trigonometric Ratios)

earnstyle [38]

Step-by-step explanation:

Hey there!

Use cos ratio to find the value of 'a'.

As per given, we can state that it is a Right angled triangle, so taking 38° reference angle.

We get;

p = AC

b = 6

and h= a

Here, Use the value of b, h and 38° angle to find the value of a.

$\cos(38° ) = \frac{b}{h}$

$\cos(38°) = \frac{6}{a}$

$0.7881 = \frac{6}{a}$ [ cos(38°=0.7881]

$0.7881a = 6$

$a = \frac{6}{0.7881}$

Therefore the measure of a is 7.61 Or 8.

Hope it helps..

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3 years ago

-140 divided by 5 1/2 then rounded to the nearest 10th of a foot

storchak [24]

Answer:

Step-by-step explanation:

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2 years ago

Which value is a solution of the inequality -x + 5 < 7? (SELECT ALL THAT\ APPLY)

Varvara68 [4.7K]

Answer:

5,7,-1

Step-by-step explanation:

5) -5+5<7=0<7 TRUE

7)-7+5<7=--2<7 TRUE

-1)-(-1)+5<7=6<7 TRUE

-3)-(-3)+5<7=8<7 FALSE

-2)-(-2)+5<7=7<7 FALSE

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2 years ago

The graph of y=-3x+4 is:

anzhelika [568]

The answer is C! a line that shows the set of all solutions to the equation :)

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2 years ago

What is the volume of the solid figure below? 32 cm 3 72 cm 3 80 cm 3 96 cm 3

Ivanshal [37]

Answer:

80cm^3

Step-by-step explanation:

To find the volume of the figure, we can see the shape comprises of both cube and cuboid

Volume of cuboid = length x breadth x height = 6x4x3= 72cm^3

Volume of cube = length xlength x length = 2×2×2 = 8cm^3

The volume of the figure = volume if cuboid and cube = 72+8 = 80cm^3

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3 years ago

Solve the simultaneous linear equations by using the elimination method​

Solve the simultaneous linear equations by using the elimination method