All categories

3 years ago

Sarah was thinking of a number. Sarah doubles it and gets an answer of 4.5. What was the original number?

Mathematics

2 answers:

Nutka1998 [239]3 years ago

7 0

Answer:

2.25

Step-by-step explanation:

Just half 4.5 and you should get 2.25 which is quite easy to be honest

vodka [1.7K]3 years ago

6 0

Answer:

2.25

Step-by-step explanation:

4/5/2=2/25

You might be interested in

4/5x+5=9 solve for x please i have 8 questions left!!!!!!!!!!!

NemiM [27]

Answer:

x= 5

Step-by-step explanation:

You need to get rid of the fraction first and to do that you muliply the whole equation by 5 so that your new equation reads 4x+25=45. Then you subtract 25 from both sides so you have 4x=20. Divide both sides by 4 so x=5.

5 0

3 years ago

(-12,16) and (-4,-2)find the slope

cestrela7 [59]

Answer:

It's -9/4 or -2 1/4. please mark me brainliest <3

Step-by-step explanation:

1) label x1, y1, x2, and y2.

x1 y1 x2 y2

(-12, 16) (-4,-2)

2) Remember the formula is y2-y1

--------

x2-x1

3) substitute

-2-16

--------

-4-(-12)

4) two minuses (negatives) is a positive (+)

so,

-2-16 -18

---------= --------

-4+12 8

5) simplify

-18 divided by 2 -9

----- = ------- or -2 1/4

8 divided by 2 4

5 0

3 years ago

Read 2 more answers

A 100-meter sprint is a race using only the straight side of a race track. A 400-meter stick is a race that makes one complete a

Mamont248 [21]

Answer

Because velocity and speed differ each other by direction, in a 100 m sprint race the person moves in a straight path without changing its direction where as in a 400 m race. The person moves in a lap around the race track and the direction changes as he turns according to the race track.

Step-by-step explanation:

5 1

2 years ago

Lennyn buys a 15-pound bag of potatoes for $3.71. To the nearest cent, how much is 1 pound of potatoes?

Fynjy0 [20]

Answer:

3.71/15= 0.24733

1 lbs of potatoes= 0.25 cents

3 0

3 years ago

Read 2 more answers

What is the volume of the cone below? ):

svetoff [14.1K]

Answer:

A. 112π units³

General Formulas and Concepts:

Symbols

π (pi) ≈ 3.14

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Volume of a Cone Formula: $\displaystyle V = \frac{1}{3} \pi r^2h$

r is radius
h is height

Step-by-step explanation:

Step 1: Define

Radius r = 4

Height h = 21

Step 2: Find Volume

Substitute in variables [Volume of a Cone Formula]: $\displaystyle V = \frac{1}{3} \pi (4)^2(21)$
Evaluate exponents: $\displaystyle V = \frac{1}{3} \pi (16)(21)$
Multiply: $\displaystyle V = \frac{16 \pi}{3}(21)$
Multiply: $\displaystyle V = 16 \pi \cdot 7$
Multiply: $\displaystyle V = 112 \pi$

8 0

3 years ago