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myrzilka [38]
3 years ago
12

Solve the equation 5x^{2}-3x-1= 0 to the nearest tenth.

Mathematics
1 answer:
Nat2105 [25]3 years ago
5 0

Answer:

Step-by-step explanation:

Answer:

x

=

3

10

+

1

10

29

or

x

=

3

10

+

−

1

10

29

You might be interested in
A 29-foot rope is cut into two pieces. The longer piece is 2 feet longer than twice the shorter piece. How long is each piece?
Sati [7]

Answer:

20 is the longer piece, 9 is the shorter piece

Step-by-step explanation:

9*2=18

18+2=20

20+9=29

5 0
3 years ago
(PLEASE HELP ) A falcon flies 800,000 meters in 4 hours. Use the formula d = rt, where d represents distance, r represents rate,
blagie [28]

Answer:

r = d/t

r = 200, 000 meters/hour

r = 200, kilometers/hour

km/ hour makes more sense

Step-by-step explanation:

Given

) A falcon flies 800,000 meters in 4 hours.

thus distance = 800, 000 meters

1 km = 1000 meters

thus distance in km=  800, 000 meters/1000 = 800 km

t = h hours

Part A: Rearrange the distance formula, d = rt, to solve for rate.

d = rt

dividing both sides by t

d/t = rt/r = r

thus. r = d/t

Part B: Find the falcon's rate in meters per hour.

d = 800, 000 meters

t = 4 hours

r = 800, 000 meters/ 4 hours = 200, 000 meters/hour

thus, rate =  200, 000 meters/hour

Part C: Find the falcon's rate in kilometers per hour.

we know d in km = 800 km as shown above

thus

rate = 800 km/4 hours = 200 km/hour

Part D: Which unit, meters, or kilometres, makes more sense to use in this scenario, and why

we know that standard unit of speed is

km/hour and m/sec

we know that that every unit is divided into from to large so that if the value is large or small we can use the appropriate unit and thus it is simpler to look the data and analyze it.

since here distance is very large , hence it is better to use km /hour

6 0
3 years ago
Subtract -7a^2 + 3a -9 from 5a^2 - 6a -4<br><br> Answer should be polynomial in standard form
lara [203]
5a^2 - 6a -4 - (<span>-7a^2 + 3a -9)
=</span>5a^2 - 6a -4 + 7a^2 -  3a + 9
=12a^2 - 9a + 5

answer
12a^2 - 9a + 5
6 0
3 years ago
Part A.
natali 33 [55]

Answer:

Part A

Martha is incorrect because she will pay 1/4 of the cost.

40%+0.35

0.40+0.35

0.75

0.25=25/100=1/4

Part B

Renee-$340

Susan-$297.50

Martha-$212.50

6 0
3 years ago
Hey guys! ima just randomly thank people and rate their answers! plus fe points!
Softa [21]

Answer:

cool

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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