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horsena [70]
3 years ago
7

Calculate the value of the expression (Explain in words) -30-(-20)

Mathematics
1 answer:
oee [108]3 years ago
8 0

Answer:

-10

Step-by-step explanation:

when you subract a negative the minus signs negate each other

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Sonny substituted 5 for x in the proportion startfraction 16 over x endfraction = startfraction 48 over 15 endfraction and cross
frez [133]

The cross products of the proportion are equal.

According to the question, Sonny's equation can be written as follows.

16/x = 48/15

Now, the variable x is replaced by the constant 5. So the equation can now be written as follows.

16/5 = 48/15

When two fractions are equal to one another as shown above, the constants are cross multiplied with one another in order to form an equation.

16*15= 48*5

The values of both the products are equal which is 240.

Therefore, because the cross products of the proportion are equal.

Learn more about Proportion on:

brainly.com/question/1496357

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4 0
1 year ago
A rectangle has a width of 46 centimeters and a perimeter of 204 centimeters. What is the rectangle’s length?
Vanyuwa [196]

Answer:

Length = 56

Step-by-step explanation:

Perimeter = Length + Length + Width + Width

Perimeter = 2L + 2W

2L + 2W = 204

2L + 2(46) = 204

2L + 92 = 204

Subtract 92 from both sides

2L = 112

Divide both sides by 2

L = 56

Length = 56

7 0
3 years ago
Which unit is part of the SI system?
Orlov [11]
Gallon should be correct
7 0
3 years ago
I need help with problem 19
alexira [117]

Answer:

24 sides

Step-by-step explanation:

Step 1:

You do 180 - 165.

180 - 165 = 15

Step 2:

You do 360 divided by 15.

360/15 = 24

Step 3:

Write your answer.

Answer: 24 sides

8 0
2 years ago
Read 2 more answers
Question 2 of 10
avanturin [10]

Answer:

d

Step-by-step explanation:

6 0
3 years ago
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