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il63 [147K]
3 years ago
14

Not sure about this please help!!!

Mathematics
1 answer:
harina [27]3 years ago
8 0

Answer:

i think its the last one

Step-by-step explanation:

as 15 - 3 is 12 and then the 7

hope this helps

i would appreciate it if u can heart and like my answer and maybe even give it 5 stars or brainliest pls i beg u thx !!! : )

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If sydney answer 15 questions in the first section correctly what is the minimum number of questions she must have answered corr
Mandarinka [93]

Answer:

8 Is correct on EDGE 2020

Step-by-step explanation:

Just took the test and got it right

3 0
3 years ago
Please show me the steps to solve this<br><br> 2n^2 = -144
Julli [10]

Answer: \large \boldsymbol{}  \pmb{6\sqrt{2}  i}

Step-by-step explanation:

\large \boldsymbol{} \bf  i=\sqrt{-1} \\\\ 2n^2=-144   \\\\n^2=-72 \\\\n=6\sqrt{2}  i

5 0
3 years ago
Read 2 more answers
Algebraically, determine the exact value of x for the<br> equation 85(2)0.4x = 6000.
Oliga [24]

Answer: 14,575

Step-by-step explanation:

85(2) 0.4x = 6000      Multiply 85 times 2

170 + 0.4x = 6000      Subtract 170 from both sides

         0.4x = 5830       Divide 5830 by 0.4

             x = 14,575

8 0
3 years ago
During a period of extreme cold, the average daily temperature dropped decreased by 112°F day. How many days did it take for the
NNADVOKAT [17]

It takes about 4 days for the temperature to decrease by 9°F.

An equation is an expression that shows the relationship between two or more variables or numbers.

Let x represent the number of days. Given that the temperature drop decreased by 1 1/2°F each day (- 1 1/2), for it to decrease by 9°F (-9):

-1 1/2 * x = -9

-1.5x = - 9

x = 4 days

It takes about 4 days for the temperature to decrease by 9°F.

5 0
2 years ago
Solve the equation by factoring. z2 − 6z − 27 = 0
Kisachek [45]
The answer is x= 9 and -3

You must fine 2 number that multiply to equal -27 and add to equal -6

(x-9) (x+3)
Then equal the parts of the binomial to zero

x - 9 = 0
x + 3 = 0

You must get x by its self.
When you do so, you'll have the answer as -3 and 9
7 0
3 years ago
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