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3 years ago

Solving systems of equations by substitution

1 answer:

7 0

Substitution is a method of finding x or y value by taking,
——-

1st full equation in name of x and substituting to get the value.

Hope helped

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Last one ok will give you branlist 7 grade math

Naya [18.7K]

Answer:

Step-by-step explanation:

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3 years ago

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The linear equation was solved using these steps. Linear equation: 1 3 (12x + 15) = 7 Step 1: 4x + 5 = 7 Step 2: 4x = 2 Step 3:

bagirrra123 [75]

Answer:

The property that was used in step 1 was the distributive property.

The property that was used in step 2 was the subtraction property of equality.

The property that was used in step 3 was the division property of equality.

Step-by-step explanation:

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4 years ago

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Find the area of A triangle with a base of 8 units and a height of 13 units

daser333 [38]

Answer:

52 units squared

Step-by-step explanation:

$13 \: units\: \times 8 \: units \div 2$

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3 years ago

Let x represent the measurement of an acute angle in degrees. The ratio of the complement of x to the supplement of c is 2:5. Gu

sergiy2304 [10]

Answer:

The ratio of the complement of x to the supplement of x is 2:5. The value of x is 30

Solution:

It is given that x represents the measurement of an acute angle in degrees. It is also given that the ratio of the complement of x to the supplement of x is 2:5.

Since it is given that x is an acute angle it means that it has to be less than 90.

Complement of an angle = 90 - x

Supplement of an angle = 180 - x

In this case it is given that the ratio of the complement of x to the supplement of x is 2:5

So we can write the relation as follows:

$\begin{array}{l}{\frac{90-x}{180-x}=\frac{2}{5}} \\\\ {(90-x) \times 5=(180-x) \times 2} \\\\ {450-5 x=360-x) \times 2} \\\\ {450-560=5 x-2 x} \\\\ {90=3 x} \\\\ {x=\frac{90}{3}=30}\end{array}$

Therefore the value of x is 30.

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3 years ago

Write three lengths that cannot be the lengths of the three sides of a triangle. Explain your answer

igomit [66]

As you can see in the picture below, it's not possible to create a triangle that has side lengths of 4, 8, and 3

triangle inequality theorem, impossible triangle
It turns out that there are some rules about the side lengths of triangles. You can't just make up 3 random numbers and have a triangle! You could end up with 3 lines like those pictured above that cannot be connected to form a triangle.

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3 years ago