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lilavasa [31]
3 years ago
12

What number must be added to the expression (-75) - (-20) so that the sum is is 56?

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
7 0

Answer:

Two negatives make a positive.

-75 - (-20) = -75 + 20

Do the math now:

-75 + 20 = -55

Write down the final equation to get the answer, which is finding the difference between 56 and -55:

Two negatives again...they make a positive, so re-write the equation:

56 - (-55) = 56 + 55

Get the answer by solving:

56 + 55 = 111

Step-by-step explanation:


ira [324]3 years ago
3 0

Answer:

D) 111

Step-by-step explanation:

(-75) - (-20) +x = 56

A negative minus a negative means add

-75 + 20 +x =56

-55 +x = 56

Add 55 to both sides

-55+55 +x = 56+55

x = 111

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As a river guide on the gauja river, antra earned $55 per passenger and a $25 tip. if she earned $410 altogether, how many passe
Ket [755]

410 - 25 = 386

385 ÷ 55 = 7 passengers


5 0
3 years ago
Read 2 more answers
Angles R and S are complementary. If angle R is = 4x - 20 and angle S = 6x - 7, then angle R measures ___ degrees.
Shalnov [3]

Answer:

26.8°

Step-by-step explanation:

4x - 20 + 6x - 7 = 90

10x -27 =90

10x = 90+27

10x= 117

x = 11.7

so, the angle R = 4x-20 =4(11.7)-20

= 46.8-20 = 26.8°

6 0
2 years ago
What is the perimeter of RSTUV?
MrMuchimi

Answer:

this should be 132 units   i hope this helps!   :)

Step-by-step explanation:

so these figures are similar

we are given 3 side measurements on one, and 3 on the other

we know that side BA is 10 units, and that SR which is the same side, is 14 units

we can conclude that they added 4 units to this side

so with the other side lengths that we are given we can figure out what the length of the perimeter of RSTUV is

10 + 4 = 14

15 + 4 = 19

28 - 4 = 24  

42 - 4 = 38

25 + 4 = 29

42 TU

28 UV

19 VR

14 SR

29 ST

add all the side together to get 132 units

3 0
3 years ago
Use set notation to write the members of the following set, or state that the set has no members. Odd numbers between 2 and 82 t
adell [148]

Let the set of all Odd multiples of 9 between 2 and 82 be denoted by D, then, using set-builder notation,

D=\{ 18n+9 \mid n \in \mathbb{N}, 0\le n\le 4 \}

The odd multiples of 9, m, in the range 2\le m \le 82 form the set

\{9,27,45,63,81\}

Each member of the set is a term of the arithmetic progression

U_n=18n+9

where the values of n range from 0 to 4, or 0\le n\le 4

Putting these facts together, we get the result

D=\{ 18n+9 \mid n \in \mathbb{N}, 0\le n\le 4 \}

Learn more about set-builder notation here: brainly.com/question/17238769

3 0
2 years ago
Which one of the triangles shown is the image of the other triangle after dilation? What are the coordinates of the center of di
Vesnalui [34]
Need a picture! Then I will be happy to help :
5 0
3 years ago
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