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marishachu [46]
3 years ago
6

What two simpler problems can you use to find 9 x 38?

Mathematics
2 answers:
Alisiya [41]3 years ago
6 0
9x30=270
9x8=72
(9x30)+(9x8)
270+72=342
torisob [31]3 years ago
5 0

(10 x 38)-38 or (40x9)-18. hope this helps
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Which graph represents the equation -5x+4y>-1?
galben [10]
<h3>Answer: Choice D</h3>

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Explanation:

The inequality sign has an "or equal to", which means the boundary line will be solid. We can rule out choices B and C because they have dashed boundary lines.

A solid boundary line means that points on the boundary are part of the solution set.

Now let's see what happens when we plug in a point like (x,y) = (4,0). This will tell us how to shade the blue region.

-5x + 4y \ge -1 \\\\-5(4) + 4(0) \ge -1 \\\\-20 \ge -1 \\\\

This is false because -20 is not larger than -1. It's the other way around.

This tells us the point (4,0) is not in the blue shaded region, and it's not on the boundary line either. We can rule out choice A because of this.

The only thing left is choice D, which is the final answer. I recommend plugging a point from this region into the inequality to confirm we have a true statement.

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3 years ago
What is x for Unknown angle problems with algebra?
yulyashka [42]

The value of x=20

Step-by-step explanation:

We need to find the value of x

We are given a right angle which is equal to 90°

So, all three angles must sum to 90°

Our equation will be:

x+2x+(x+10)=90

Solving and finding value of x

x+2x+x+10=90\\4x=90-10\\4x=80\\x=80/4\\x=20

So, the value of x=20

Keywords: Angles

Learn more about angles at:

  • brainly.com/question/3202836
  • brainly.com/question/7151553

#learnwithBrainly

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3 years ago
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soldi70 [24.7K]
9q-4=3r-6
+4=+4
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3 years ago
Read 2 more answers
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