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lisabon 2012 [21]
3 years ago
11

A

Mathematics
1 answer:
motikmotik3 years ago
3 0

Answer:

50

Step-by-step explanation:

180-(x+80) + 180-(2x+20) = 180 -70

180-x-80 + 180-2x-20 = 110

100-x + 160-2x = 110

260 - 3x = 110

-3x = -150

x = <u>50</u>

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Historically, Australia has 300 indigenous languages. Only 90 are still spoken today. What percent have gone extinct?
shtirl [24]

Answer:

70%

Step-by-step explanation:

well first you have to take put 90 over 300, times 100

<u>90</u> <u>100</u> = 30%

300 × 1

That gives you the percentage that is spoken today.

Then you have to take away that answer from 100%

100%

<u>-</u><u> </u><u> </u><u>30</u><u>%</u>

70 %

5 0
3 years ago
Please help me with this on the image
alukav5142 [94]

Answer:

200 grams

Step-by-step explanation:

80 grams        x grams

-------------- = -------------

6 people        15 people

Using cross products

80 *15 = 6x

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Divide by 6

1200/6 = 6x/6

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8 0
3 years ago
I need some help with this
arsen [322]
The tangent ratio is the ratio of opposite (500 ft) to adjacent (x).
  tan(29°) = (500 ft)/x
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6 0
3 years ago
Can anyone help me on D?
Sophie [7]

Answer: make it bigger~

Step-by-step explanation:

7 0
2 years ago
7/9 + 1/6 divided by 3/7
Mrac [35]

Answer:

119/54

Step-by-step explanation:

7/9 + 1/6 = 17/18

17/18 divided by 3/7 = 119/54

As a mixed number it will be 2 11/54

4 0
2 years ago
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