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Sever21 [200]
2 years ago
10

Work out the value of x.

Mathematics
1 answer:
torisob [31]2 years ago
4 0

Answer:

x = 15

Step-by-step explanation:

180 = 90 +4x +2x

90 = 6x

15=x

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Rebecca collected data from a random sample of 1200 homeowners in her state asking whether or not they use electric heat. Based
larisa [96]

Hi,

The answer is c. The sample is biased.

This is because the sample is taken on a single state, an Rebecca reports a statistic about the nation. Her data contains information only of her state. If she lives in a very cold state, there is probably more homeowners using electric heat than in a hot state.

6 0
3 years ago
Which expression is equivalent to √4j^4/9k^8?
solmaris [256]
\frac{ 2j^{2} }{ 3^{4} }
SQRT each individual bit: 4 andj^{4} and 9 and k^{8}
6 0
3 years ago
Read 2 more answers
Deon has to buy all the butter she needs to make 60 biscuits. She buys the butter in 250 g packs. (b) How many packs of butter d
Vikki [24]

Answer:

200g of sugar, 600g of flour, 400g of butter

Step-by-step explanation:

50g sugar = 15 biscuits

3 x 50g = flour --) 150g = flour

2 x 50g = butter --) 100g = butter

60/15 = 4; 4 times as much

4 x 50g = 200g of sugar

4 x 150g = 600g of flour

4 x 100g = 400g of butter

                                                                                                           

                                                                                                       

7 0
3 years ago
Simplify -3(y+5)+3(2y+6)
likoan [24]
-3(y + 5) + 3(2y + 6)
-3y - 15 + 6y + 18
3y + 3

Answer:
3y + 3

Hope this helps.
5 0
3 years ago
Read 2 more answers
The solution of -2(x + 1) = 2(x – 1)
PIT_PIT [208]

Answer:

Step-by-step explanation:

lets eliminate the parenthesis,

-2x-2=2x-2

-4x=0

x=0

5 0
2 years ago
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