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AnnyKZ [126]
3 years ago
10

Can someone help? I don't understand the equasion

Mathematics
1 answer:
Alika [10]3 years ago
8 0

Answer:

a = 1/6

Step-by-step explanation:

To solve, divide both sides by 5 1/4

a = 7/8 / (5 1/4)

a = (7/8) / (21/4)

a= 7/8 * 4/21

a= 28/168

a= 1/6

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Please help me to find value P ​
PSYCHO15rus [73]
P=10
Explanation
2p+p+90+100+140=360
3p+330=360
-330. -330
3p=30
P=10
8 0
3 years ago
Almost done help......
Anton [14]

Answer:

<em>x = 1 + ( √ 10 )/ 2, or x = 1 - ( √ 10 )/ 2; Option A</em>

Step-by-step explanation:

See steps below;

I would prefer answering this question by completing the square, rather than applying a quadratic formula;

3x^2 - 6x - 12 = 0, ⇒ Add 12 to either side,

3x^2 - 6x = 12, ⇒ Divide either side by 3,

x^2 - 2x = 4, ⇒ Write the equation in the form x^2 + 2ax + a^2 = (x + a)^2,

x^2 - 2ax + a^2 = 4 + a^2, ⇒ Solve for a

2ax = -2x,

a = - 1, ⇒ Substitute value of a,

x^2 - 2x + 1 = 4 + 1,

( x - 1 )^2 = 5, ⇒ Solve for x,

x = √5 + 1, and x = - √5 + 1,

In other words; <em>Solution : x = 1 + ( √ 10 )/ 2, or x = 1 - ( √ 10 )/ 2; Option A</em>

4 0
4 years ago
Derek’s bike has a mass of 12 kg and he is riding at a velocity of 8 m/s. What is the kinetic energy of the bike
Marrrta [24]
Answer: The kinetic energy of Derek's bike is 384.

To find the kinetic energy of an object, we need to know the mass and the velocity of the object. Both of those are already given in the problem. So we can simply use the formula.

The formula for kinetic energy is KE  =0.5(m)v^2. All we need to do is input the know variables and evaluate.

KE = 0.5 (12) (8^2)
KE = 0.5(12)(64)
KE = 384
4 0
4 years ago
June bought ​ 3 1/2 ​ gallons of white paint at $17.50 per gallon and ​ 1 3/4 ​gallons of blue paint at $19.00 per gallon.
Ratling [72]
White paint is $17.50 per gallon so 3 1/2 gallons would be
17.50 * 3.5 = 61.25
And then blue paint is $19 per gallon so 1 3/4 gallons would be
19 * 1.75 = 33.25
Now add
61.25 + 33.25 = 94.5
The total cost would be $94.50
3 0
3 years ago
Read 2 more answers
Mast 1 broadcasts radio signals that can be heard within a radius of 15 km.
Alex73 [517]

Answer:

do your self it is easy

Step-by-step explanation:

do your self it is easy

8 0
3 years ago
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