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Brilliant_brown [7]
2 years ago
14

One-fourth of the sum of a number and 10 is 2 less than twice the number?

Mathematics
1 answer:
Marysya12 [62]2 years ago
4 0

Answer:

The number is 2

Step-by-step explanation:

The equation is: 1/4 (x + 10) = 2x - 1

1/4x + 2.5 = 2x - 1

Multiply everything by 4 to get rid of the fraction

x + 10 = 8x - 4

Subtract x from both sides

10 = 7x - 4

Add 4 to both sides

14 = 7x

Divide both sides by 7

x = 2

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how do you find the volume to the nearest cubic in of a cone whose radius is 12 in and hieght is 15 inches
11Alexandr11 [23.1K]
You have to know the formula for the volume of a cone.
In high school, there's no other way.

Volume of a cone = (1 / 3) π (radius)² (height)

Volume = (1 / 3) π (12 inches)² (15 inches)

Volume = 720 π = 2,261.95 cubic inches

Rounded to the nearest cubic inch, that's<u> 2,262 cubic inches</u>.
6 0
3 years ago
Read 2 more answers
Someone help me out please.
dem82 [27]

Answer:

The answer should be 64.21 or 64

Step-by-step explanation:

Help this Helped

5 0
3 years ago
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Step by step please, thank you so much
marshall27 [118]

The equation of the parabola will be y = x² – 6x + 9. Then the correct option is C.

The complete question is attached below.

<h3>What is the parabola?</h3>

It's the locus of a moving point that keeps the same distance between a stationary point and a specified line. The focus is a non-movable point, while the directrix is a non-movable line.

The equation of a quadratic function, of vertex (h, k), is given by:

y = a(x – h)² + k

where a is the leading coefficient.

The vertex of the parabola is at (3, 0). Then the equation of the parabola will be

y = (x – 3)² + 0

Then open the bracket, we have

y = x² – 6x + 9

Then the correct option is C.

More about the parabola link is given below.

brainly.com/question/8495504

#SPJ1

6 0
2 years ago
What is the LCM of 15 and 6?
Mamont248 [21]

Answer:

30

Step-by-step explanation:

List the factors

15 30 45 60 75

6 12 18 24 30

The first common multiple you find is literally the lowest common multiple

4 0
3 years ago
Read 2 more answers
Use properties of operations to complete the equivalent expressions.
Vinvika [58]

Answer:

Answer is explained below in the explanation section.

Step-by-step explanation:

Note: This question is very generic and incomplete. So, I will be using the general properties of operation for a general expressions for the sack of understanding and concept.

Solution:

There are several properties of arithmetic operations. But here, we will be discussing about the common properties of operations.

1. Commutative property of Addition

2. Commutative property of Multiplication

3. Associative property of Addition

4. Associative property of Multiplication

Let's Start,

1. Commutative property of Addition:

a + b = b + a

it means that if we add 2 to 3 or 3 to 2, the result will be same.

2 + 3 = 3 + 2

5 = 5

Similarly.

2. Commutative property of Multiplication:

a x b = b x a

it means that if we multiply 2 to 3 or 3 to 2, the result will be same.

2 x 3  = 3 x 2

6 = 6

3. Associative property of Addition:

Let's suppose we have 3 variables now,

a, b and c

so,

a + (b + c)  = (a + b) + c

2 + (3 + 5)  = (2 + 3) + 5

2 + (8) = (5) + 5

10 = 10

Similarly.

4. Associative property of Multiplication:

a x (b x c)  = (a x b) x c

2 x (3 x 5)  = (2 x 3) x 5

2 x ( 15) = (6) x 5

30 = 30

Hence, these operations are very useful in solving the bigger and complex questions in mathematics.

4 0
3 years ago
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