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stiv31 [10]
3 years ago
7

The value of x is ___________.​

Mathematics
1 answer:
Darya [45]3 years ago
3 0

Recall that the sum of all interior angles in a triangle is 180°, and that a flat-line is always 180°.

Check the picture below.

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Which equation illustrates the commutative property of addition?
Stels [109]
I believe the first one 12+ 6 + 15 = 12 + 15 + 6 is your answer, since you are just moving things around

hope this helps
7 0
4 years ago
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Question 1. When solving the equation 10 = x + 3 what should you do to both sides of the equation? o add 3 O subtract 3 O multip
Andreyy89

Answer:

Subtract 3.

Step-by-step explanation:

x = 7

10-3 = 7

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The graph below shows a proportional relationship between x and y
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Step-by-step explanation:

4 0
3 years ago
Solve -1.5x=9 '''''''''''''''''''''''''''''''
azamat

Answer:

x = -6

Step-by-step explanation:

-1.5x = 9    Divide the -1.5 on both sides

x = -6

Plug in the answer to make sure it works.

-1.5(6) = 9

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3 0
3 years ago
Vector upper a overscript right-arrow endscripts has a magnitude of 69 units and points due west, while vector upper b overscrip
Tom [10]
Refer to the figure below.

Define unit vectors as follows:
\hat{i} in the eastern direction
\hat{j} in the northern direction

Given:
Vectors a and b point due west and south respectively. Therefore
\vec{a} = -69 \ht{i} \\
\vec{b} = -69\hat{j}

Part (a)
\vec{a}+\vec{b}=-69\hat{i}-69\hat{j}=-69(\hat{i}+\hat{j})
The magnitude is
|-69(√[1² + 1²])| = 69√2 = 97.58.
The direction relative to west is
θ = tan⁻¹ (b/a) = tan⁻¹ 1 = 45°  south of west

Answer:
The magnitude of (a + b) is 97.58 or 69√2.
The direction is 45° south of west.

Part (b).
\vec{a} - \vec{b} = -69\hat{i}+69\hat{j}=-69(\hat{i} -\hat{j})
The magnitude is
|69(√(1+1)| = 69√2 = 97.58.
The direction relative to west is
tan⁻¹ (b/a) = 45° north of west.

Answer:
The magnitude of (a-b) is 97.58 or 69√2.
The direction is 45° north of west.

7 0
3 years ago
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