All categories

3 years ago

-45 + -20

Mathematics

2 answers:

Savatey [412]3 years ago

5 0

Answer is. B. -65. It’s like adding with positive numbers but your doing it with negative

alex41 [277]3 years ago

3 0

It’s B

Explanation

I did this before

You might be interested in

In 2010 Singapore welcome 11600000 overseas visitors.This value has been rounded off to the nearest 100000.What are the largest

spayn [35]

Answer:

The largest possible number of overseas visitors would be 11,640,000.

The smallest possible number of overseas visitors would be 11,550,000.

Step-by-step explanation:

The number 11,600,000 was rounded off to the nearest 100,000.

This means that either 0 or 1 was added to the figure with place value of 100,000.

It would be zero (0) in the case where the number after the 100,000th placed value number is lower than 5 and it would be one (1) in the case where the number after the 100,000th placed value is greater than or equal to 5.

Therefore, the largest possible number of overseas visitors would be 11,640,000.

The smallest possible number of overseas visitors would be 11,550,000.

7 0

4 years ago

Drag the tiles to the correct boxes to complete the pairs.

Law Incorporation [45]

#CARRYONLEARNING 

..LOVEUALL...

7 0

2 years ago

Read 2 more answers

Write an expression to representi Six more than the quotient of four and a number .

faltersainse [42]

There is black white pants in my room

6 0

3 years ago

Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to

Anettt [7]

Answer:

correct option is 2187

Total surface area is 2,185.44 square inches.

lateral surface area is 640.56 square inches

Step-by-step explanation:

Given

radius of cylinder = 12 inches

height of cylinder = 17 inches

we will us value of pi as 3.14

surface area for cylinder consist of two part

1. lateral surface area which is gven by $2\pi rl$

where r is radius of cylinder and l is height of cylinder

Thus, lateral surface area for given cylinder is

$2\pi rl\\ =>2* 3.14*12*17\\=> 1281.12$

Thus, lateral surface area for given cylinder is 1281.12 square inches.

_________________________________

second part of surface area is area of two base (upper and lower) of cylinder.

area of base is given by area of circle $\pi r^2$

$area \ of \base = \pi r^2 = 3.14*12^2\\=>area \ of \base = 3.14*144 = 452.16$

This, area of base is for one base of cylinder

since there are 2 base

area of both base will be = 2* area of one base

= 2*452.16 = 904.32.

Thus, area of base is 904.32 sq. in.

_______________________________________

Total surface area of cylinder = area of two base+ lateral surface area of cylinder = 1281.12 square inches + 904.32 square inches

= 2,185.44 square inches.

Thus, total surface area is 2,185.44 square inches.

lateral surface area is 640.56 square inches

but option which is closest to calculated value is 2187.

Thus, correct option is 2187

___________________________________________

Note: this problem can be directly solved using formula

total surface area for cylinder = $2\pi r^2 + 2\pi rl$

5 0

3 years ago

PLEASE HELP ASAP A glass stand to display a doll is in the shape of a right triangular pyramid. The area of the base is 40.5 squ

Effectus [21]

Answer: $202.5\ in.^3$

Step-by-step explanation:

Given

The area of the base is $A=40.5\ in.^2$

height of the triangular prism is $h=15\ in.$

The volume of a triangular prism is $V=\dfrac{1}{3}Ah$

The volume of given Prism is

$V=\dfrac{1}{3}\times 40.5\times 15=202.5\ in.^3$

The volume of the triangular prism is $202.5\ in.^3$

8 0

3 years ago