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sleet_krkn [62]
3 years ago
12

2x²+12x-7 =0 (completing the square) give your answer to 2 decimal places

Mathematics
1 answer:
guapka [62]3 years ago
8 0

Answer:

x1 = 0.54

x2 = –6.55

Step-by-step explanation:

use the calculator

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A case of tomato cans weighs 563 dekagrams. A case of soup cans weighs 458 dekagrams. How much do the two cases weigh together i
oee [108]

Answer:

  102,100 decigrams

Step-by-step explanation:

  (564 dag + 458 dag) = 1021 dag

  1021 dag × 100 dg/dag = 102100 dg

The two cases together weigh 102,100 decigrams.

_____

1 dag = 10 g

1 dg = 0.1 g

6 0
3 years ago
Read 2 more answers
Y=143.3(5)^2+1823.3(5)+6820
MA_775_DIABLO [31]

As the question is written, the <em>correct answer</em> is:


19519.


Explanation:


Our question states

y = 143.3(5)² + 1823.3(5) + 6820


To evaluate this, we use the order of operations (PEMDAS). There is nothing to be evaluated in parentheses, so P is taken care of.


The E part, exponents, is 5². This is 25, which gives us:

y = 143.3(25) + 1823.3(5) + 6820


Next we have M and D, multiplication and division (in the order they appear). Our multiplication is:

143.3(25) = 3582.5; and

1823.3(5) = 9116.5.


This gives us:

y = 3582.5 + 9116.5 + 6820


Lastly, we add these:

y = 12699 + 6820

y = 19519

6 0
4 years ago
Read 2 more answers
An 18-foot ladder leaned up against a wall forms an angle of 70 degrees with the ground. How high up the wall will the ladder re
Paladinen [302]

the ladder is 13.8 ft up the wall

6 0
3 years ago
Wym has a packet of 50 biscuits she gives half of them to her friend and then eats 8 how many are left
Zanzabum

Answer:

17 biscuits

Step-by-step explanation:

Since she starts with 50 and gives away half which is 25, that will leave her with 25 biscuits herself. If she then eats 8 of them, that will leave her with 17 since 25-8=17.

8 0
2 years ago
A quilter has square blocks of fabric. The area of each block is 36 in.2. The quilter decides to cut the squares along one diago
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I think the answer is H but I could be wrong
8 0
3 years ago
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