3 years ago

I tried doing this and it's really hard

Mathematics

1 answer:

alex41 [277]3 years ago

3 0

Answer:

6 9/26

Step-by-step explanation:

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Solve. 10x^2 - 6 = 9x

grin007 [14]

Answer:

Step-by-step explanation:

use quadratic formula: (-b ±√b²-4ac) ÷ 2a

a = 10, b = -9, c = -6

7 0

2 years ago

mike drove to a frineds house at the rage of 40 mph. he returned hoke by the dsne route at 45 mph the driving time for the round

wolverine [178]

Let the distance be x miles

Time = Distance / speed

Time taken by Mike to go to his friend's house = x / 40 hours

Time taken by him to return = x / 45 hours

Total time = x / 40 + x / 45 = 4 hours

= 9x + 8x = 1440 miles

17x = 1440

= x = 1440 ÷ 7

= x = 84.706

Time taken to return home = 84.706 /45= 1.882 hours .

Therefore , Mike took 1.882 hours to reach home .

8 0

3 years ago

A survey of 25 grocery stores revealed that the mean price of a gallon of milk was $2.98, with a standard error of $0.10. What i

Gnesinka [82]

Answer:

95% confidence interval: (2.784,3.176)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 25

Sample mean = $2.98

Standard error = $0.10

Alpha = 0.05

95% confidence interval:

$\mu \pm z_{critical}(\text{Standard error})$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$2.98 \pm 1.96(0.10) = 2.98 \pm 0.196 = (2.784,3.176)$

5 0

3 years ago

No explanation needed just the answer please

Otrada [13]

Answer:

Step-by-step explanation:

65x- 12 = 43x + 10

65x - 43x = 10 + 12

22x = 22

x = 22/22

x = 1 

(65x- 12) =

65 * 1 - 12 = 53

43x + 10

43 * 1 -12 = 53

5 0

3 years ago

effren recorded the number of students in each class level at highschool.based on his findings,what is the probability that a ra

eimsori [14]

The answer is C) 3/10

4 0

3 years ago