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2 years ago

WILL MARK BRAINLIST!!! PLS HELP QUICK!!

Mathematics

1 answer:

Alborosie2 years ago

8 0

Answer:

12.

Square root = 37,

Step-by-step explanation:

40^2 = 1600

35^2 = 30 * 40 + 25 = 1225

So the requred square is between 35 and 40

38^2 = 1444

37^2 = 1369 - so its this one.

Required difference = 1381 - 1369 = 12.

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Solve the system of equations.

Anon25 [30]

Answer:

x = -2y

Step-by-step explanation:

Step 1. x + 2y = 0

Step 2. x + 0 = -2y

Step 3. x = -2y

3 0

3 years ago

The diameter of a bicycle wheel is 63 cm. How much distance will it cover in 20revolutions?

alina1380 [7]

Answer:

1256 cm

Step-by-step explanation:

First we must find the perimeter, because the perimeter is equal to 1 revolution.

The perimeter of any circle is Pi(Diameter)

3.14*20

62.8 cm is the perimeter of the bike wheel.

Because the perimeter is basically a revolution, we can multiply 62.8 by 20 to get:

1256 cm

7 0

2 years ago

In a factory, 2 identical solid metal right circular cones of base radius h cm are melted and recast into 8 area base smaller id

PIT_PIT [208]

C is the answeer hope i could help

6 0

4 years ago

In 1970 there were 160 African American women in elected public office in the United States. By 1993 the number had increased to

timama [110]

Answer:

Average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is 94.43.

Step-by-step explanation:

Here, according to the question:

Number of African American women in elected public office in the United States in the year 1970 = 160

Number of African American women in elected public office in the United States in the year 1993 = 2332

Now, the change in the number of elected women between 1970 & 1993

= Women elected in the year 1993 - Women elected in the year 1970

= 2332 - 160 = 2,172

or, the change in the number of elected women candidates between 1970 & 1993 is 2,172

Now, the difference in the time period is 1993 - 1970 = 23 years

So, $\textrm{The average rate of change} = \frac{\textrm{Total change in the quantity}}{\textrm{Time Interval}} \\=\frac{2172}{23} = 94.43$

Hence, the average rate of change for the number of African American women who held office at any given time between 1970 & 1993 is 94.43.

6 0

3 years ago

Determine the numerical value of x

goldfiish [28.3K]

Answer:

x = 10

Step-by-step explanation:

OA = OD ( both radii of the circle )

OD = OB + BD = x + 16

OB is at right angles to OB ( line from centre to midpoint of chord is right )

Using Pythagoras' identity in right triangle ABO

OA² = OB² + AB² , that is

(x + 16)² = x² + 24²

x² + 32x + 256 = x² + 576 ( subtract x² from both sides )

32x + 256 = 576 ( subtract 256 from both sides )

32x = 320 ( divide both sides by 32 )

x = 10

8 0

3 years ago