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2 years ago

Which net represents this solid figure

Mathematics

2 answers:

Lelechka [254]2 years ago

7 0

Answer:

which solid figure is it?

Alik [6]2 years ago

7 0

The one in the top right corner all others can fold to make a 3D shape

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Can someone tell me if i got this right? its all i need

Alexxx [7]

Answer:

No, the answer is 120 plants per square foot

Step-by-step explanation:

What I did was first figure up the area of the triangle. You want to do this because the area will tell you how many square feet are in the garden. In order to find this, you need to use this formula: 1/2 b·h

Plug in the numbers like this: 1/2·15·8

15 is the base of the triangle, while 8 is the height of the triangle. Now solve your equation.

15·8=120

1/2·120=60

Area = 60

Now you know that the area is 60ft². So there are 60 square feet in the whole garden. But, we're not done yet. Jessica wants to put 2 plants in every 1 square foot. So now, we need to multiply 60 by 2 in order to get 2 plants in every 1 square foot.

60·2=120

Jessica can put 120 plants in the garden if she is wanting 2 plants per square foot.

I hope this makes sense and is easy to understand. Please let me know if you need any more help or clarification. I'm always happy to help! Have a great day and good luck!!

4 0

2 years ago

How do you solve this equation? 5y+9=2x

Art [367]

Are we solving for x or y?

4 0

3 years ago

Read 2 more answers

Simplify the radical expression sqrt 21y * 5sqrt 49y

olchik [2.2K]

<span> sqrt 21y * 5sqrt 49y
= sqrt(21y) * 5*7*sqrt(y)
= sqrt(y) [ sqrt(21) * 35 ] (answer)</span>

3 0

3 years ago

Classify the quadratic equation based on the number of solutions

BigorU [14]

QUESTION 1

The given equation is

$3 {x}^{2} + 2x = - 4$

We rewrite in the form,

$a {x}^{2} + bx + c = 0$

This implies that,

$3 {x}^{2} + 2x + 4 = 0$

$a=3,b=2,c=4$

We can use the determinant to find the number of solutions without necessarily solving the equation.

$D=b^2-4ac$

$D=2^2-4(3)(4)$

$D=4-48$

$D=-44$

Since the determinant is negative the equation

$3 {x}^{2} + 2x = - 4$

has no solution.

QUESTION 2

The given equation is

$5 {x}^{2} + 14 = 19$

$5 {x}^{2} + 14 - 19 = 0$

$5 {x}^{2} - 5= 0$

${x}^{2} - 1= 0$

$D=0^2-4(1)( - 1)$

$D=4$

Since the determinant is positive, the equation

$5 {x}^{2} + 14 = 19$

has two solutions.

QUESTION 3

The given equation is

$2 {x}^{2} + 5 = 2$

This implies that,

$2 {x}^{2} + 5 - 2 = 0$

$2 {x}^{2} + 3 = 0$

$a=2,b=0,c=3.$

The determinant is

$D= {0}^{2} - 4(2)(3)$

$D= - 24$

Since the determinant is negative, the equation

$2 {x}^{2} + 5 = 2$
has no solution.

QUESTION 4

The given equation is

$2 {x}^{2} + 3x = 5$

We rewrite to obtain,

$2 {x}^{2} + 3x - 5 = 0$

$a=2,b=3,c=-5$

The determinant is

$D= {3}^{2} - 4(2)( - 5)$

$D= 9 + 40$

$D= 49$

Since the determinant is positive the equation

$2 {x}^{2} + 3x = 5$

has two solutions.

QUESTION 5

The given equation is

$4 {x}^{2} + 12x = - 9$

We rewrite to obtain,

$4 {x}^{2} + 12x + 9 = 0$

$a=4,b=12,c=9$

We substitute in the determinant formula to obtain,

$D=12^2 - 4(4)(9)$

.
$D=144- 144$

$D=0$

Since the determinant is zero the equation

$4 {x}^{2} + 12x = - 9$
has only one root.

5 0

3 years ago

Read 2 more answers

Lopez spent 1/3 of his vacation money for travel in 2/5 of his vacation money for lodging.He spent $1,100 for travel and lodging

ANEK [815]

The answer is $2,062.50
$1,100=1/3 + 1/5 of his money
therefore 1,100 = 5/15 + 3/15 = 8/15
I want to know what 15/15 is equal to
therefore I must first determine 1/15
1,100/8 = 137 1/2 = 1/15
The entire sum of money is 15/15 so it is 137 1/2 * 15 = $2,062.50

7 0

3 years ago