All categories

3 years ago

How do I solve this 3-7+2-[13-17-1.3]+5

Mathematics

1 answer:

dusya [7]3 years ago

8 0

Answer:

8.3

Step-by-step explanation:

do whats in the brackets first.

13-17-1.3= -5.3

rewrite the equation

3-7+2-[-5.3]+5

3-7+2= -2

rewrite the equation

-2-[-5.3]+5

when 2 negative signs are together u change it to a positive sign.

rewrite the equation

-2+5.3+5

-2+5.3= 3.3

rewrite the equation

3.3+5=8.3

You might be interested in

Find the Perimeters of the rectangle whale degonal is 5cm and lenght is 4cm

amid [387]

Answer:

Step-by-step explanation:

First, we have to get the breadth value.

By the pythagoras theoreom,

Diagonal²=length² + breadth²

breadth = √( Diagonal²- length²)

breadth = √( 5² - 4²)

breadth = √9

breadth= 3

Perimeter of a rectangle = 2x ( length + breadth)

= 2 x ( 4 + 3)

= 2 x 7

= 14

3 0

3 years ago

Please help. Im dying for the explanation. I will mark you brainalist.

AlekseyPX

Step-by-step explanation:

Given that the mean of the numbers is 12

$mean = \frac{sum \: \: of \: observations}{total \: number \: of \: observations}$

so here

let's that one as x and another one as 2x since it is given that one is twice the other

Therefore we get

$mean = \frac{13 + x + 4 + 16 + 6 + 2x}{6}$

Given mean = 12

$12 = \frac{39 + 3x}{6}$

$72 = 39 + 3x$

$3x = 33$

$x = 11$

Hence it's 11 and 22

5 0

2 years ago

How how do you solve this please explain

zhannawk [14.2K]

Answer:

1. have se x

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

the scale on a map is stated as 1:250000 two villages are 9 cm apart on the map how far from each other are the two villages in

Karolina [17]

Answer:

22.5 kilometers

Step-by-step explanation:

we know that

The scale drawing is

$1:250,000$

That means

1 unit on a map represent 250,000 units in the actual

1 cm on a map represent 250,000 cm in the actual

1 cm on a map represent 2,500 m in the actual

1 cm on a map represent 2,5 km in the actual

therefore

using proportion

Find out how much represent 9 cm apart on the map

$\frac{1}{2.5}\ \frac{cm}{km}=\frac{9}{x}\ \frac{cm}{km}\\\\x=9(2.5)\\\\x=22.5\ km$

7 0

3 years ago

Find the greatest common factor of 26 and 14.

Molodets [167]

Answer:

Step-by-step explanation:

A factor is a number that can evenly divide into another number.

Let’s list all the factors of both numbers.

26: 1, 2, 13, 26

14: 1,2, 7, 14

Now find the GCF, or greatest common factor. The biggest number that is a factor of both 26 and 14 is 2.

Therefore, the GCF of 26 and 14 is 2.

6 0

3 years ago