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den301095 [7]
3 years ago
9

The binomial (x + 5) is a factor of x2 + 8x + 15. What is the other factor?

Mathematics
2 answers:
photoshop1234 [79]3 years ago
8 0
X+3

you need to find a number that adds to the middle number (8) and multiplys to the last number (15)
5•3=15 and 5+3=8
puteri [66]3 years ago
5 0

Answer:

x+3

Step-by-step explanation:

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Whats 1+2+3+4+5 add them together pls
ahrayia [7]

Answer:

15

*ignore this answers have to be a minimum of 20 characters.

6 0
3 years ago
Read 2 more answers
5/16 as a decimal..?
madam [21]

Answer:

0.3125

Step-by-step explanation:

type that into a calculator

7 0
2 years ago
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Alex and Peter win some money and share it in the ratio 3:5. Alex gets £33. How much did Peter get?
IgorLugansk [536]

Answer:

Step-by-step explanation:

Set it up as fractions, Alex over Peter.

3/5 : 33/x  Let x represent Peter's amount.  Now find out: how do you get from 3 to 33?  What times 3 equals 33?  11

What you do on the top, you must do on the bottom.  If 3 times 11 equals 33, then 5 times 11 equals x.  5 times 11 equals 55, so x equals 55.

Peter will get 55.  Don't forget the pound symbol.

5 0
3 years ago
What is Four more than twice a number is -10?
Katena32 [7]
4+2x=10
2x=10-4
2x=6
X=6/2
X=3
6 0
3 years ago
A thermometer is taken from a room where the temperature is 20°C to the outdoors, where the temperature is 3°C. After one minute
IrinaVladis [17]

Answer:

A. T=7.12°C; B. t=3.32min

Step-by-step explanation:

In order to find the answer we can use the Newton's law of cooling:

y(t)=y0e^{kt} where:

y0=initial temperature - room temperature

k=coefficients

t=time

Because the outdoors temperature is 3°C, the initial temperature is 20°C, and because the thermometer reads 11°C after 1min we have:

11=(20-3)e^{k*1}

ln(11/17)=k

-0.4353=k

A. Temperature after an extra minute.

y(2)=17e^{-0.4353*2}

y(2)=7.12 so the answer is 7.12°C

B. Time in order to read 4°C

4=17e^{-0.4353*t}

ln(4/17)/(-0.4353)=t}

3.32min=t

6 0
3 years ago
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