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lord [1]
2 years ago
5

Solve by factorising x2 + 8x + 15 = 0

Mathematics
1 answer:
adelina 88 [10]2 years ago
6 0

Answer:

x = - 3/2 thats the answer

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Write an
makkiz [27]
The answer is (x-y)^2
hope it helps!!!!!!
the formula is
(a-b)^2
and when you expand it, it becomes
a^2-2ab+b^2
8 0
3 years ago
HURRY PLS HELP ILL GIVE BRAINLYEST Subtract.
natka813 [3]

Answer:

2940

Step-by-step explanation:

You are subtracting a negative number. "Minus a negative is plus."

525 - (-2415) = 525 + 2415 = 2940

6 0
2 years ago
Read 2 more answers
3 to the 3rd power - 4 + 5 to the 2nd power​
AnnZ [28]

Answer:

48

Step-by-step explanation:

(3^3)-4+(5^2)

27-4+25

23+25

48

6 0
3 years ago
ATM personal identification number (PIN) codes typically consist of four-digit sequences of numbers. Find the probability that i
oksian1 [2.3K]

Answer:

(a) 0.0001 or 0.01%

(b) 0.01 or 1%

Step-by-step explanation:

Since there are 10 possible numeric digits (from 0 to 9), and there is only one correct digit, there is a 1 in 10 change of getting each digit right.

The probability that if you forget your PIN, then you can guess the correct sequence

(a) at random:

P=(\frac{1}{10})^4=0.0001=0.01\%

(b) when you recall the first two digits.

P=(\frac{1}{10})^2=0.01=1\%

7 0
3 years ago
Scale factor word problem<br> Someone please help me!
natima [27]

1. Niles is making a map of his neighborhood. He uses a scale in which 1 cm = 5 km. The distance between his house and the school is 8.5 km.

How many centimeters will there be between his house and school on the map?

1 cm = 5km

8.5 ÷ 5 = 1.7

There will be 1.7 centimeters between his house and school.

3 0
2 years ago
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