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3 years ago

Which strategy is the most appropriate strategy to solve 5x2−x+3=0 ?

Mathematics

1 answer:

Vilka [71]3 years ago

7 0

Quadratic formula :)

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-2(n+3 = -12

Blizzard [7]

Answer: n=3

Step-by-step explanation:

Divide by - 2

(N+3) = 6

Subtract 3

N= 3

6 0

2 years ago

Read 2 more answers

Krystal left the hardware store and traveled toward the recycling plant at an average speed of 61 mph. Scott left at the same ti

tiny-mole [99]

Since Krystal and Scott is heading on opposite directions, therefore the distance between the two would be the sum of their distances from where they left, so:

total distance (d) = distance covered by Krystal (dK) + distance covered by Scott (dS)

d = dK + dS

We know that the formula for distance is:

distance = velocity * time

So,

d = vK * t + vS * t

where

vK = velocity of Krystal = 61 mph

vS = velocity of Scott = 65 mph

d = 252 miles

Therefore:

252 = 61 t + 65 t

126 t = 252

t = 2 hours

Therefore Scott needs to travel for 2 hours.

4 0

3 years ago

Help me pls this is hard

Luba_88 [7]

Answer:

I guess it is the Answer C

6 0

2 years ago

Read 2 more answers

Pls help meeeee and thank you so so so much

Oksana_A [137]

Answer: 1/3 x + -1

Step-by-step explanation:

6 0

3 years ago

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In ΔXYZ, ∠Y=90° and ∠X=73°. ∠ZWY=80° and XW=80. Find the length of ZY to the nearest 100th.

lawyer [7]

Answer:

Solution given:

Y=90°

∠X=73°.

∠ZWY=80°

and XW=80.

ZY=?

We know that

In right angled triangle ∆ XYZ

Tan 73= $\frac{p}{h}$

3.27= $\frac{yz}{xy}$

3.27×[xy]=yz

xw+wy= $\frac{yz}{3.27}$

wy= $\frac{yz}{3.27}$ -80...........(1)

again

In right angled triangle WYZ

Tan 80= $\frac{yz}{wy}$

5.67×wy=yz

wy= $\frac{yz}{5.67}$

yz=5.67×wy............................................(2)

Equating equation 1&2

$\frac{yz}{5.67}$ = $\frac{yz}{3.27}$ -80

$\frac{yz}{3.27}$ - $\frac{yz}{5.67}$ =80

5.67yz-3.27yz=80*5.67*3.27

2.4yz =1483.272

yz= $\frac{1483.272}{2.4}$

yz=618.03

:.y=618.03unit.the length of ZY to the nearest 100th is 618.

8 0

3 years ago