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algol13
3 years ago
7

I need help on 18,19 and 20 please help do tomorrow

Mathematics
1 answer:
Verdich [7]3 years ago
3 0
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PLEASE HELP ASAP!! I WILL GIVE U BRAINLIEST, PLZ SOLVE A person places a mirror between herself and a building. The mirror is 17
Semenov [28]

Answer:

11.6

Step-by-step explanation:

There are 2 traingles one from the person to bottom of mirror and one from the bottom of the mirror to the top of the building

these are conjugate triangles so if the 3m represents 17.5

what does the 2 m represent?

2*17.5/3=35/3=11 2/3 so 11.6

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3 years ago
In programming, what is a floating-point number?
Cerrena [4.2K]

Answer: A floating-point number is one where the position of the decimal point can "float" rather than being in a fixed position within a number. floating point is a variable type that is used to store floating-point number values.

5 0
3 years ago
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Find the sum. (−a^3+4a−3)+(5a^3−a)
aev [14]

Answer:

4a³+3a-3

Step-by-step explanation:

You can solve this by combining like terms. Add the numbers with the correct exponents together.

-a³+5a³

4a-a

Thus, the answer is

4a³+3a-3

5 0
3 years ago
your house is 1030 meters from school your friends house is 1.5 kilometers from school whose house is farther from school?
Soloha48 [4]

Answer: Your friends it farther away from school, because 1030 meters converted to km is 1.030 km which is smaller and closer than 1.5 km which further away

Step-by-step explanation: convert 1.030km to 1.5km

5 0
3 years ago
What is the equation of the line that passes through the point (-1, -7) and has a<br> slope of 2?
o-na [289]

Answer:

(a,b)------>(-1,-7)let

now

m(x-a)=(y-b)

2(x+1)=(y+7)(where m=slope

2x+2=y+7

2x-y=7-2

2x-y=5 is a required equation.

7 0
3 years ago
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