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Radda [10]
2 years ago
15

Answer fast pls i need help

Mathematics
1 answer:
Alchen [17]2 years ago
5 0

Answer:

12X3/-a=`12

Step-by-step explanation:

12x3=36
36xa/+=12

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A convenience store purchased a magazine and marked it up 100% from the original cost of $2.30. A week later, the store placed t
77julia77 [94]

Answer:

$2.30

Step-by-step explanation:

The original price is $2.30 an it goes up by 100% which means another 2.30. So add 2.30 and 2.30 together you get 4.60 now divide that by two since the magazine is 50% off and you get the original price which was 2.30

5 0
3 years ago
Read 2 more answers
For what values of x is x2 2x = 24 true? â€""6 and â€""4 â€""4 and 6 4 and â€""6 6 and 4.
Ugo [173]

The value of x which satisfies the given quadratic equation is 4 and -6.

Given-

The given quadratic equation is.

x^2+2x=24

Rewrite the given quadratic equation in the standard form,

x^2+2x-24=0

Factorize the equation to find the value of x. Apply the middle term splitting method. The above equation can be rewritten as,

x^2+6x-4x-24=0

x(x+6)-4(x+6)=0

(x-4)(x+6)=0

x=4,-6

Hence, the value of x which satisfies the given quadratic equation is 4 and -6.

For more about the quadratic equation, follow the link below-

brainly.com/question/2279619

8 0
3 years ago
The Lakeside Marina charges a $35 rental fee for a boat in addition to charging $15 per hour. Write the equation that represents
mina [271]

Answer:

y=35+15x

if it has been rented for 3 hours,

y=35+15(3)

y=35+45

y=80

Step-by-step explanation:

5 0
3 years ago
An unfair coin with​ Pr[H] = 0.2 is flipped. If the flip results in a​ head, a marble is selected at random from a urn containin
satela [25.4K]
Normally when dealing with coins the probability of getting heads or tails is 0.5 each. However in this case since its an unfair coin, the probability of getting heads is 0.2. 
H - head 
T - tails
R - red marble
pr (H) = 0.2
urn
6 red and 4 blue
pr (T)   = 0.8
urn
3 red and 5 blue

when heads is obtained 
red - 6/10 -0.6
blue - 4/10 - 0.4
therefore when multiplying with 0.2 probability of getting heads
pr (R ∩ H) red - 0.6*0.2 = 0.12

when tails is obtained 
red - 3/8 - 0.375
blue - 5/8 - 0.625
when multiplying with 0.8 probability of getting tails
pr (R ∩ T) red - 0.375 * 0.8 = 0.3

using bayes rule the answer can be found out, 
the following equation is used;
pr (H | R) = pr (R ∩ H) / {pr (R ∩ H) + pr (R ∩ T)}
               = 0.12 / (0.12 + 0.3)
               = 0.12 / 0.42
               = 0.286
the final answer is 0.286
6 0
3 years ago
Jack invested $2,900 in an account paying an interest rate of 8 % compounded
LekaFEV [45]

Answer:$451

Step-by-step explanation:

7 0
3 years ago
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