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poizon [28]
4 years ago
8

Solve 7(x - 4) + 4x = 71.

Mathematics
2 answers:
nikklg [1K]4 years ago
4 0
7x-28+4x=71
11x-28=71
+28  +28
11x=99
/11   /11
x=9
Xelga [282]4 years ago
3 0
I hope this helps!
Step 1: Simplify both sides of the equation.<span><span><span>7<span>(<span>x−4</span>)</span></span>+<span>4x</span></span>=71
</span>Simplify:<span>
</span><span><span><span>11x</span>−28</span>=71

</span>Step 2: Add 28 to both sides.
<span><span><span><span>11x</span>−28</span>+28</span>=<span>71+28
</span></span><span><span>11x</span>=99

</span>Step 3: Divide both sides by 11.
<span><span><span>11x/</span>11 </span>= <span>99/11</span></span><span> 
so the answer is x=<span>9 </span></span>
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A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the tra
aev [14]

Answer:

17 m² or 17 square meters

Step-by-step explanation:

A trapezoid has base lengths of 5 meters and 3.5 meters. If the height of the trapezoid is 4 meters, what is the area of the trapezoid?

Area of a trapezoid =1/2(b1 + b2)h

Where

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= 1/2 × 8.5m × 4m

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