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2 years ago

Ik this is easy but i forgot how to do it help

Mathematics

1 answer:

REY [17]2 years ago

8 0

Answer:

Step-by-step explanation:

4+3= 7

=7x

(since they both have the variable "x" we can combine them both)

have a good day! <3

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(8.4x + 2.9) + (-3.7x + 5).

konstantin123 [22]

Answer:

Step-by-step explanation:

4 0

3 years ago

A rectangular tank that is 5324 ft cubed with a square base and open top is to be constructed of sheet steel of a given thicknes

marishachu [46]

Answer:

Side of 22 and height of 11

Step-by-step explanation:

Let s be the side of the square base and h be the height of the tank. Since the tank volume is restricted to 5324 ft cubed we have the following equation:

$V = s^2h = 5324$

$h = 5324 / s^2$

As the thickness is already defined, we can minimize the weight by minimizing the surface area of the tank

Base area with open top $s^2$

Side area 4sh

Total surface area $A = s^2 + 4sh$

We can substitute $h = 5324 / s^2$

$A = s^2 + 4s\frac{5324}{s^2}$

$A = s^2 + 21296/s$

To find the minimum of this function, we can take the first derivative, and set it to 0

$A' = 2s - 21296/s^2 = 0$

$2s = 21296/s^2$

$s^3 = 10648$

$s = \sqrt[3]{10648} = 22$

$h = 5324 / s^2 = 5324 / 22^2 = 11$

4 0

3 years ago

Worth 10 points please help me ASAP

Nitella [24]

(2,-2) would be the answer I think

8 0

2 years ago

Planes S and R both intersect plane T Which statements are true based on the diagram? Select three options OPlane S contains poi

jeka94

Answer:

Options (2), (4) and (5)

Step-by-step explanation:

Option (1).

Planes S contains points B and F.

False.

(Point B lies on plane S and point F lies on plane R)

Option (2).

The line containing points A and B lie on the plane T.

True.

(points A and B lie on plane T)

Option (3).

Line v intersects lines x and y at the same plane.

False.

Option (4).

Line z intersects plane S at point C.

True.

Option (5).

Planes R and T intersect at line y.

True.

5 0

3 years ago

What is the equivalent fraction?

Vera_Pavlovna [14]

$0.7 = \dfrac{7}{10} = \dfrac{7 \times 10 }{10 \times 10} = \dfrac{70}{100}$

Answer: 70/100

3 0

3 years ago

Read 2 more answers

Ik this is easy but i forgot how to do it help​

Ik this is easy but i forgot how to do it help