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harina [27]
2 years ago
7

-1-2•[(-1)+5)} I am so lost on these math problems

Mathematics
2 answers:
nikitadnepr [17]2 years ago
5 0

Answer:

-9

Step-by-step explanation:

Use the order of operations. Do these operations in this order:

  • Parenthesis
  • Exponents
  • Multiplication
  • Division
  • Addition
  • Subtraction

Note: when either multiplication and division, or addition and subtraction are there, go left to right.

Equation: -1 - 2 · {(-1) + 5}

Solve:

  • -1 - 2 · {(-1) + 5}
  • -1 - 2 · {4}
  • -1 - 8
  • -9

*Challenge*

Using the same method, see if you can solve this equation:

6 ÷ 2(1+2)

-Chetan K

Pepsi [2]2 years ago
3 0
The answer is -9 because me said so
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PLEASE HELP ITS URGENT. I’ll give lots of points who helps !! Please
Molodets [167]

Answer:

D:21

Step-by-step explanation:

Use the vertical angles equation.

4x + 13 = 5x - 8

Subtract 4x from 5x.

5x - 4x = x

13 = x - 8

Add 8 on both dies.

13 + 8 = 21

x = 21

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Hope it helped!

7 0
3 years ago
Read 2 more answers
Rhian sat a maths test and an English test In the Maths test she scored 14 out of 17 In the English test she scored 31 out of 39
BabaBlast [244]

Answer:

Rhian did better in the Math test.  

Step-by-step explanation:

Given: Rhian scored 14 out of 17 in a Math test. In the English test she scored 31 out of 39.

To find: In which test did she do better?

Solution:

We have,

Rhian scored 14 out of 17 in a Math test.

Rhian scored 31 out of 39 in an English test.

So, first we need to find the percentage of the marks scored.

Percentage in the Math test =\frac{14}{17}\times100=82.35 \%.

Percentage in the English test =\frac{31}{39}\times100= 79.49\%.    

Clearly, the percentage in the Math test is greater than the percentage in the English test.

So, Rhian did better in the Math test.    

8 0
3 years ago
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adelina 88 [10]

Answer:

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3 to the power of 2 times 5 to the power of 2

6 to the power of 2 times 7 to the power of 3

7 to the power of 2 times 5 to the power of 3

3 to the power of 2 times 5 to the power 2 times 7 to the power of 2

Step-by-step explanation:

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melomori [17]

Answer:

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Step-by-step explanation:

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Answer: 4m + 5

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