2 years ago

Help me with 18 19 and 20 plz

Mathematics

1 answer:

Rzqust [24]2 years ago

6 0

19: He multiplied instead of dividing which will make a totally incorrect answer

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How many sides does a nonagon have?

guapka [62]

Answer:

Step-by-step explanation:

Fun fact. The name nonagon comes from Greek enneagonon, and is arguably more correct, though less common than "nonagon".

3 0

3 years ago

Find the value of x. PLEASE explain how you got your answer thanks!

Mnenie [13.5K]

Answer:

x = 96

Step-by-step explanation:

x + x - 5 + x - 11 + x - 8 = 360

4x - 24 = 360

4x = 360 + 24

4x = 384

x = 96

8 0

2 years ago

Which expression is equivalent to −19y+13 ?

Vikki [24]

The first thing you should do in this case is to write the expression correctly:
- (1/9) y + (1/3)
Now, we take out common factor (1/9) obtaining:
1/9 (-y + 3)
Let's check:
1/9 (-y + 3)
-1/9y + 3/9
-1/9y + 1/3
OK
Answer:
An expression equivalent is:
1/9 (-y + 3)

4 0

2 years ago

Read 2 more answers

The measures of the angles of a triangle are in the ratio 2:3:4. In degrees, the measure of the largest angle of the triangle is

notsponge [240]

Since the three angles of a triangle add to give 180°

The the size of the largest angle 4 = 180° × $\frac{4}{2+3+4}$
= 180° × $\frac{4}{9}$

∴ the size of the largest angle = 80°

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2 years ago

Please help me with number 8.<br>Will mark as brainliest!

EleoNora [17]

100deciliters equals 10 liters

3 0

3 years ago