Which net represents this solid figure? (The first picture is the solid figure the rest are the choices

Mathematics

1 answer:

tatyana61 [14]2 years ago

3 0

The solid figure is represented by the second option.

Step-by-step explanation:

The solid figure in the question is a cuboid.
On opening, it will have 6 faces, each of which will be a rectangle.
All the corners or edges will have 90° or right angles.
Also, on opening, one side will have 2 other faces attached to it on top and bottom which is seen in the second figure.

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Find the value of c that completes the square for x2−15x+c

meriva

Answer:

The value of c is $\frac{225}{4}$ .

Step-by-step explanation:

The perfect square of the difference between two numbers is:

$(x-y)^{2}=x^{2}-2xy+y^{2}$

The expression provided is:

$x^{2}-15x+c$

The expression is a perfect square of the difference between two numbers.

One of the number is x and the other is √c.

Use the above relation to compute the value of c as follows:

$x^{2}-15x+c=(x-\sqrt{c})^{2}\\\\x^{2}-15x+c=x^{2}-2\cdot x\cdot\sqrt{c}+c\\\\15x=2\cdot x\cdot\sqrt{c}\\\\15=2\cdot\sqrt{c}\\\\\sqrt{c}=\frac{15}{2}\\\\c=[\frac{15}{2}]^{2}\\\\c=\frac{225}{4}$