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german
3 years ago
14

What is the difference of 31 - (-9) =

Mathematics
1 answer:
Licemer1 [7]3 years ago
5 0

Answer:

40

Step-by-step explanation:

31 + 9=40

cause u need to change the negative into positve and change the minus into plus

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The temperature has been going down at a constant rate. In 4 hours it went down 12 degrees. Which expression best shows the temp
Nookie1986 [14]

Answer:

i think its 45 % but where are the expressions

Step-by-step explanation:


4 0
3 years ago
Two fifths of a number equals 564. what is the number
masya89 [10]

Answer:

1410

Step by step explanation:

<em>2</em><em>/</em><em>5</em><em>x</em><em>=</em><em>5</em><em>6</em><em>4</em>

<em>5</em><em>/</em><em>2</em><em>*</em><em>2</em><em>/</em><em>5</em><em>x</em><em>=</em><em>5</em><em>6</em><em>4</em><em>*</em><em>5</em><em>/</em><em>2</em>

<em>x</em><em>=</em><em>1</em><em>4</em><em>1</em><em>0</em>

<em>Proof</em><em>:</em><em> </em><em>2</em><em>/</em><em>5</em><em>*</em><em>1</em><em>4</em><em>1</em><em>0</em><em>=</em><em>5</em><em>6</em><em>4</em>

Hope it helps <3

5 0
3 years ago
Read 2 more answers
16d + 20c + 5d -7 - 8c - 7d + 3 Evaluate the expression if: d= -3 and c= 4
IrinaK [193]

Answer:

2

Step-by-step explanation:

d.

16x-3= -48

5x-3= -15

-7x-3= 21

=-42

c.

20x4= 80

-8x4= -32

= 48

-7+3= -4

3 0
3 years ago
80 marked up by 37.5 percent
Mariana [72]
Make 37.5% into decimal form : Since it is being marked up, add 100% = 1.375
1.375 x 80
     1.375
     x  80
_________
    0000
+11000
_________
  110.000

80 marked up by 37.5% is 110.
7 0
3 years ago
true or false: when multiplying radicals, you multiply the radicands together and the numbers outside the radicals together
Dmitrij [34]
You can only multiply numbers that are inside the radical symbols
7 0
3 years ago
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