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2 years ago

Find the sum and difference of 17-(-49)= and -31+(-45)= and -55+37= and -25-(-25)=

Mathematics

2 answers:

kirza4 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Interpreting as: -31+(-45)

Input:

-31 - 45

Result:

-76

Number line:

Number line

Number name:

negative seventy-six

Manipulatives illustration:

- | | - | | = | - |

| 31 | | 45 | | | 76

leonid [27]2 years ago

3 0

Just use an calculate you will find the asnwer 173

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To round the number to the hundredths place, what should be done first?

Oksanka [162]

Answer:

Step-by-step explanation:

5 0

2 years ago

A pile of earth removed from an excavation is a cone measuring 6ft high and 30ft across its base. How many trips will it take to

nignag [31]

Answer: 14

Step-by-step explanation:

Given

Excavation cone measures

height $h=6\ ft$

Diameter $d=30\ ft$

Truck can dump $125\ ft^3$ at a time

The volume of a cone is

$V=\dfrac{1}{3}\pi r^2h$

Putting values

$\Rightarrow V=\dfrac{1}{3}\times \pi\times 15^2\times 6\\\Rightarrow V=1413.9\approx 1414\ ft^3$

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$\Rightarrow N=\dfrac{1414}{125}=13.3\approx 14$

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8 0

2 years ago

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aivan3 [116]

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8 0

2 years ago

What is the least number of cuts you would need to make to cut a 3 by 3 by 3 inch block of cheese into 1 by 1 by 1 inch blocks o

Semenov [28]

Answer:

6 Cut Minimum

Step-by-step explanation:

According to the Question,

You have a 3x3x3 cube.

First make two cuts parallel to base of the cube each at a distance of 1 unit . This leaves you with three cuboids of dimensions 3x3x1.
Now make two parallel cuts parallel to the height of the cube. This leaves you with nine cuboids of dimensions 3x1x1.
Now make the final two cuts each 1 unit apart parallel to width and you are left with 27 cubes of 1x1x1.

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5 0

2 years ago

In ΔPQR, what is the m∠Q? Enter your answer in the box.

Orlov [11]

Answer:

105°

Step-by-step explanation:

11x-5 + 6x+5 + x = 180

18x = 180

x = 10

m∠Q = 11(10)-5 = 110-5 = 105°

8 0

2 years ago