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Elden [556K]
3 years ago
6

(3x^2-15d) - (-10x^2-4d)

Mathematics
2 answers:
ElenaW [278]3 years ago
6 0
<span>(3x^2-15d) - (-10x^2-4d) = 13x^2-11d

Hope this helps!!
</span>
kirill [66]3 years ago
4 0
Yehhhh man whattt hee said im just trynnna get more points
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.125 as a fraction .
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1/8


Step-by-step explanation:


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Every 124 minutes ½ of a drug dosage remains in the body
Vitek1552 [10]

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3 years ago
a plane averaged 400 mph on a trip going east, but only 280 mph on the return trip. The total flying time in both directions was
Liula [17]

Answer:

1400 miles

Step-by-step explanation:

Speed is the time rate of change of distance. It is the ratio of distance to time and is given by the equation:

Speed(S) = \frac{distance(d)}{time(t)}\\ S=\frac{d}{t}

plane averaged 400 mph on a trip going east, but only 280 mph on the return trip.

The time spent (t₁) in going east is given by:

S=\frac{d}{t_1}\\ t_1=\frac{d}{S} =\frac{d}{400mph}

The time spent (t₂) in going east is given by:

S=\frac{d}{t_2}\\ t_2=\frac{d}{S} =\frac{d}{280mph}

The total time (t) = t₁ + t₂

t = t₁ + t₂ = 8.5 hours

\frac{d}{400}+\frac{d}{280}  =8.5\\280d+400d=952000\\680d=952000\\d=1400miles\\

Therefore the one way distance is 1400 miles

7 0
3 years ago
If -2 is a root of the quadratic equation x²-5x+c find the value of c
Tcecarenko [31]

Answer:

Step-by-step explanation:

P(x)= x^2-5x+c=0

P (-2)= (-2)^2-5 (-2)+c=0

= 4+10+c=0

=14+c=0

C=(-14)

3 0
3 years ago
Read 2 more answers
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