3 years ago

Use elimination to solve the system

Mathematics

1 answer:

Dovator [93]3 years ago

4 0

Just divide the numbers and times them

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Solve: |2x + 3| -1 < 4

dybincka [34]

|2x+3|-1<4
|2x+3|<5

1) when 2x +3 is positive
2x+3<5
2x<2
x<1 (-∞, 1)

2) when 2x+3 is negative
-(2x+3)<5
-2x-3<5
-2x<8
x>-4 (-4, ∞)

(-∞, 1)∩(-4, ∞)=(-4,1)

7 0

3 years ago

Read 2 more answers

Sam hiked 4.5 km along a straight bush track, and then turned 40° and walked a further 3.8 km in a straight line.

erica [24]

Answer is 8.3 hope you is happy

3 0

2 years ago

Hey box measures 4" x 8" x 3 / 4 inches find the volume<br><br><br> The volume is blank in3

Maslowich

4*8*(3/4)=3*8=24
the volume is 24.

6 0

3 years ago

In remodeling a house an architect finds that by adding the same amount to each dimension of a 15ft by 19ft rectangular room, th

earnstyle [38]

Answer:

Step-by-step explanation:

new length=15+x

width=19+x

then area=(15+x)×(19+x)=285+15x+19x+x²=x²+34x+285 ft²

original area=15×19=285 ft²

then 285+98=x²+34x+285

x²+34x-98=0

x²+34x+17²=98+17²

(x+17)²=98+289=387

x+17=√387=3√43

x=3√43-17 ft

8 0

3 years ago

A girl is on the beach and the angle of elevation from her feet to the top of a lighthouse is 62' If the lighthouse is 30ft tall

soldi70 [24.7K]

Answer:

15.95 feets

Step-by-step explanation:

Given that:

Angle of elevation = 62°

Using trigonometric relation :

Tanθ = opposite / Adjacent

From the drawing attached :

Opposite = 30 feets

Distance between girl and lighthouse = d

Tan 62 = 30 / d

1.8807264 * d = 30

d = 30 / 1.8807264

d = 15.951283

d = 15.95 feets

3 0

3 years ago