15:10
3:2
Hope this helps :)
Answer:
Step-by-step explanation:
|4x-3|=5√(x+4) ⇔ |4x-3|²=5²(√(x+4))² and x+4 ≥ 0
⇔ (4x-3)² = 25(x+4) and x+4 ≥ 0 ( because : /a/² = a²)
⇔16x²-24x+9 = 25x +100 and x+4 ≥ 0
⇔ 16x² -49x - 91 =0 and x+4 ≥ 0 quadratic equation
Δ = (-49)²-4(16)(-91) = 8225
two solution : X1 = (49-√8225)/32 ≅ - 1.3 accept (-1.3+4 ≥ 0)
X2 = (49+√8225)/32 ≅4.37 accept (4.37+4 ≥ 0)
Answer:
123.25
Step-by-step explanation:
Am = 4 hours
4x14.5= 58
Pm = 4 hrs 30 mins
4x14.5=58
Then multiply 30(14.5) which gives you 435. Then divide by 60. That gives you 7.25
You could also divide 14.5 by 2 since 30 minutes is half of an hour.
Then add
58+58+7.25
123.25
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