Step 1. Simplify
7x^2 - 8x - 4 - 2x^2 + 3x + 5 + 5x^2 - 10x - 8
Step 2. Collect like terms
(7x^2 - 2x^2 + 5x^2) + (-8x + 3x - 10x) + (-4 + 5 - 8)
Step 3. Simplify
10x^2 - 15x - 7
Answer:
1. 69°
2. 97°
3. 145°
4. 150°
5. 128°
6. 74°
Step-by-step explanation:
To find the angle measure of the missing angle, we have to note that the angle measures of a quadrilateral will all equal up to be 360°.
If we know 3 out of the 4 angles and the sum of the angles, we can add up the angles we know then subtract that from 360.
<em>Number 1:</em>


<em>Number 2:</em>
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<em>Number 3:</em>
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<em>Number 4:</em>
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<em>Number 5:</em>
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<em>Number 6:</em>
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<em><u>Hope this helped!</u></em>
Answer:
the second one
Step-by-step explanation:
Its measuring by miles per hour
The formula for the volume of a pyramid (V) is 1/3 the area of the base (B) multiplied by the height (H). If that’s what you’re asking:)