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nignag [31]
1 year ago
10

Hello all! Please help me out with this.

Mathematics
1 answer:
Wewaii [24]1 year ago
8 0

Answer:

Y=72

Step-by-step explanation:

First we set up the equation which is (20-2) times 4=Y

Then we solve, 20 minus 2 is risk since it is in the parentheses. 20 minus 2 is 18.

After that 18 times 4 is 72

Y=72

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What’s the value of x
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Answer:

Step-by-step explanation:

Pythagorean theorem:

x² + x² = (9√2)²

2x² = 162

x² = 81

x = 9

4 0
2 years ago
A cube is dilated by a factor of 2. How many times larger is the volume of the resulting cube than the volume of the original cu
Vladimir [108]

Answer:

Example:

Cube with sides: 3. V= 3x3x3= ?

Cube with sides: 6. V= 6x6x6=?

How many times bigger is the second answer? That’s it!


Step-by-step explanation:


8 0
2 years ago
Identify the vertex and axis of symmetry of the graph of g(x) = |x|- 8
Andrews [41]
The vertex is (0,-8)
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Read 2 more answers
What is (2.5 x 10 to the third power) (6 x 10 to the fourth power)
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Answer:

2,500) (60,000

brain pls

Step-by-step explanation:

5 0
2 years ago
If x=7+root 40 ,find the value of root x+1by the root of x​
Luda [366]

Chapter : Algebra

Study : Math in Junior high school

x = 7 + √40

find √x of √x + 1

= √x + 1

= √(7+√40) + 1

in Formula is :

= √7+√40 = √x + √y

= (√7+√40)² = (√x + √y)²

= 7+√40 = x + 2√xy + y

= 7 + √40 = x + y + 2√xy

→ 7 = x + y → y = 7 - x ... Equation 1

→ √40 = 2√xy → √40 = 2.2√10 = 4√10

= xy = 10 ... Equation 2

substitution Equation 1 to 2 :

= xy = 10

= x(7-x) = 10

= 7x - x² = 10

= x² - 7x + 10 = 0

= (x - 5)(x - 2) = 0

= x = 5 or x = 2

Subsitution x = 5 and x = 2, to equation 1

#For x = 5

= y = 7 - x

= y = 7 - (5)

= y = 2

#For x = 2

= y = 7 - x

= y = 7 - (2)

= y = 5

and his x and y was find :

#Equation 1 :

= x = 5 and y = 2

#Equation 2 :

= x = 2 and y = 5

So that :

√7+√40 = √x + √y

= √7+√40 = √2 + √5

And that is answer of question :

= √2 + √5 + 1

3 0
3 years ago
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