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3 years ago

HELLLP MEEEEEEEE PLEASE

Mathematics

2 answers:

jolli1 [7]3 years ago

6 0

Answer:

Each side is 15 ft

Step-by-step explanation:

The area of a square is given by

A = s^2 where s is the side length

225 ft^2 = s^2

Take the square root of each side

sqrt ( 225 ft^2) = sqrt ( s^2)

15 ft = s

Each side is 15 ft

Lina20 [59]3 years ago

6 0

The square root of 225 is 15

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Greg swam 4 kilometers against the current in the same amount of time it took him to swim 16 kilometers with the current. The ra

ad-work [718]

Answer:

5 kmph

Step-by-step explanation:

Given: Greg swam 4 kilometers against the current.

Greg swam 16 kilometers with the current.

Rate of the current was 3kmph.

Lets assume the speed of greg swimming with no current be "x".

∴ Speed of swimming against current= $(x-3)\ kmph$

Speed of swimming with current= $(x+3)\ kmph$

As given, it took same amount of time to swim both with current and against current.

∴ Forming an equation to find the value of x, which is speed of greg swimming with no current.

We know, $Time= \frac{Distance}{Speed}$

⇒ $\frac{4}{(x-3)} = \frac{16}{(x+3)}$

Multiplying both side by (x+3) and (x-3)

⇒ $4\times (x+3)= 16\times (x-3)$

Using distributive property of multiplication.

⇒ $4x+12= 16x-48$

Subtracting both side by 4x and adding by 48.

⇒ $60= 12x$

Dividing both side by 12

⇒ $x= \frac{60}{12} = 5\ kmph$

Hence, Greg can swim at the rate of 5kmph with no current.

7 0

3 years ago

DO NOW

klasskru [66]

Answer:

slope is the rate at which a function progresses. y intercept a point that passes through they x axis when it is 0. ex) (0,9)

equation written as y=ax +b

b = y intercept

ax = slope

ax = y2-y1/x2-x1

take 2 random points

(0,3) (-2,0)

slope : 0-3/-2=0 = -3/-2 = 3/2

y intercept = 3 because x = 0 and y =3

equation = y =3/2x + 3

Step-by-step explanation:

3 0

3 years ago

Geometry- please help!!

defon

The answer would be 2/6 (first option)!
Geometric mean is 4.9, which is equal to 2 (square root) 6

3 0

3 years ago

Can someone write an equation out of X= -4 Y= -8 Z= 3

ICE Princess25 [194]

Answer:

2y + 4z = x

Step-by-step explanation:

Given

$x = -4$

$y = -8$

$z = 3$

Required

Write an equation that which is true for the above parameters

This question will be answered using trial by error method and the solution is not limited to one equation.

One equation that matches the values above is:.

$2y + 4z = x$

To check:

Substitute the values of x, y and z in the above equation.

$2y + 4z = x$

$2 * -8 + 4 * 3 = -4$

$-16 + 12 = -4$

$-4 = -4$

Hence,

Because both sides of the equation are one and the same (-4), $2y + 4z = x$ is true for the above values of x, y and z.

4 0

2 years ago

PLEASE HELP ME!!! I'M BAD AT GEOMETRY!!!

7nadin3 [17]

Answer:

Manuel would be correct, the volumes would be equal.

Step-by-step explanation:

The formulae for finding the volume of pyramids and cones both include dividing three (multiplying by $\frac{1}{3}$ ).

Square pyramid formula: $\frac{1}{3}$ ×B×h where B is the area of the base. By plugging in numbers we have that B=314.159 and h=5. 314.159× $\frac{1}{3}$ ×5=523.5983.

Cone formula: The basic formula is the same: $\frac{1}{3}$ ×B×h, but the area of the base is found using the circle formula of π×r². For the cone we have B=314.159 and h=5. 314.159× $\frac{1}{3}$ ×5=523.5983.

Since both of these formulas came up with the same answer, we can conclude that Cone W has the same volume as Pyramid X, which is Manuel's answer.

7 0

3 years ago