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Blababa [14]
2 years ago
11

The sum of twice a number and 31

Mathematics
1 answer:
Andreyy892 years ago
3 0

Answer:

Let the unknown number be x ;

2(x) +31\\=2x+31

Step-by-step explanation:

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Alana claims that not all 4-sided polygons with 2 pairs of equal sides are parallelograms. Is she correct. Please explain why
sergiy2304 [10]

Answer:

No, she is not correct

Step-by-step explanation:

Given: Alana claims that not all 4-sided polygons with 2 pairs of equal sides are parallelograms

To check: whether she is correct or not.

Solution:

Any two-dimensional figure formed using straight lines is known as a polygon. Triangles, quadrilaterals are examples of polygons.

A parallelogram is a quadrilateral in which opposite sides are parallel.

Kite is a polygon made up of four sides with two pairs of equal sides that are adjacent to each other but it is not a parallelogram as its opposite sides are not parallel.

So, she is not correct.

6 0
2 years ago
Maths a²(5a - 3b) -3a²​
11Alexandr11 [23.1K]

Answer:

5a^{3} - 3a^{2} b-3a^{2}

Step-by-step explanation:

a^{2} (5a-3b)-3a^{2} |

Expand brackets

5a^{3} - 3a^{2} b-3a^{2}

Final Answer is

5a^{3} - 3a^{2} b-3a^{2}

4 0
2 years ago
What’s four plus four
strojnjashka [21]

Answer: 8

Step-by-step explanation: four plus four equals eight

4 0
3 years ago
Read 2 more answers
At Burger King the
geniusboy [140]
Not sure if this is very clear
Patty = 45.8%
Bun = 20.8%
Cheese = 8.3%
Sauce = 12.5%
Pickles = 4.2%
Veggies = 8.3%

EXPLANATION :

The equation to find a percentage is part(the broken down calories) over whole ( the total calories) is equal to % which we replace with x (since we’re trying to find the %) over 100 because all percents are out of 100. So for simple terms, p/w = %/100.
What I did was put 550/1200 = x/100, cross multiply, leaving you with 1200x=55000, then divide 55000/1200, giving you 45.8.

4 0
3 years ago
PLS HELP ASAP ILL GIVE BRAINLKEST THANKS
kompoz [17]

Answer:

d<u>></u>-7

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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