All categories

4 years ago

Write 605.8 correct to the nearest 10

1 answer:

6 0

Rounding to the nearest 10 means if the digit to the right of the 10s collum is 5 or more round up. if less than 5 round down.
605.8
610 is the answer as 5 is rounded up

You might be interested in

Show your work (40 points) ASAP

Alik [6]

Answer:

x=8

The value of z is 49°.

4 0

3 years ago

Help will mark brainlist if it correct If each edge of a cube is increased by 2 inches, the

Anastasy [175]

Answer:

D. sum of these edges is increased by 24 inches -- True

Step-by-step explanation:

Given a cube and its edge is increased by 2 inches.

To study the effect of this increase in the Volume, area of each face, diagonal and sum of edges.

Solution:

Let the side of original cube = a inches.

Formula for volume of cube:

$V =side^3 = a^3$

If the side is increased by 2 inches, the side becomes (a+2) inches.

So, new volume, $V' = (a+2)^3$

Using the formula:

$(x+y)^3 =x^3+y^3+3xy(x+y)$

$V' = (a+2)^3 = a^3+8+3\times 2 \times a(a+2)=a^3+8+6a(a+2)$

So, $V' = V + 8+6a(a+2)$

Volume increased by 8+6a(a+2) [which is not equal to 8]

So, statement is false:

A. volume is increased by 8 cubic inches -- False

Each face in a cube is a square.

Area of each face, A = $side^2 = a^2$

New area, A' = $(a+2)^2$

Using the formula: $(x+y)^2 =x^2+y^2+2xy$

$A' = a^2+4+4a$

Area increased by 4+4a [which is not equal to 4 sq inches]

B. area of each face is increased by 4 square inches -- False

Diagonal of each face = $a\sqrt2$

Increase of 2 in the edge:

New diagonal = $(a+2)\sqrt2 = a\sqrt2+2\sqrt2$

So, increase of $2\sqrt2$ not 2.

C. diagonals of each face is increased by 2 inches -- False

There are 12 number of edges in a square.

So sum of all 12 edges = 12a

When edge is increased by 2, sum of all edges = 12(a+2) = 12a + <em>24</em>

An increase of 24.

D. sum of these edges is increased by 24 inches -- True

4 0

3 years ago

A grocer mixed 3 types of white, green and black tea in 3:5:7 ratio, respectively. How many kilograms of each are needed to make

mart [117]

Answer:

There are 6/5 white, 2 green, and 14/5 black

Step-by-step explanation:

Think of it like this.

First we add up everything.

3x+5x+7x = 6kg

15x=6

We find x and plug it in to the equation.

x=2/5

3*2/5=6/5 (6/5 is white)

5*2/5=2 (2 is green)

7*2/5=14/5 (14/5 is black)

There are 6/5 white, 2 green, and 14/5 black

7 0

3 years ago

There are 6 picas in 1 in. If a line of type is 3 3/4in long. What is this picas in length?

scoray [572]

Answer:

3 3/4 in length is equal to 22.5 picas

Step-by-step explanation:

If there are 6 picas in 1 in, then in 3 3/4 in, we will first take this to decimal form, which is

3.75 in

Therefor 3.75 in = 6 picas × 3.75 = 22.5 pisca

3 0

3 years ago

In a certain city, Third A venue runs west to east. Main Stret runs south to north. They

Ipatiy [6.2K]

Answer:

300 yards west of the library. The school is 200 yards east

Step-by-step explanation:

6 0

2 years ago