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2 years ago

I need help with 18-19

Mathematics

2 answers:

Svet_ta [14]2 years ago

8 0

Answer:

18-19= -1

Step-by-step explanation:

18-19=-1

Sweetheart, you cant subtract a smaller number from an bigger number or it will be a negitive number so the answer is -1

elena-s [515]2 years ago

8 0

Answer:

18. p = 5

19. b = 8

Step-by-step explanation:

all you have to do is apply the inverse of the number being added to the variable to the other side of the equation to balance the equation. And if you are ever stuck there are great algebra calculators online. For example MathPapa. Good luck

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Bezzdna [24]

Answer:

2n-9

Step-by-step explanation:

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2 years ago

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REY [17]

To find the area of the triangle, you will need to know the length of the base and there length of the height.

You can find both of these by using the circles that are given.

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2 years ago

Q.Take out the area of the trapezium. Parallel sides-15,23 Non parallel sides-10,8

Dmitriy789 [7]

Answer:

Step-by-step explanation:

Area of a trapezium is the average of the parallel sides times the distance between them.

If we subtract 15 units from each of the parallel sides, we end up with a triangle that has two sides of 8 units and one of 10 units. One of the 8 unit sides is the base and we need to find the height h which is perpendicular to this base.

Let the base be split into two segments, call one A, the other will be 8 - A

From Pythagoras.

10² - A² = h² = 8² - (8 - A)²

10² - A² = 8² - (8 - A)²

100 - A² = 64 - (64 - 16A + A²)

100 - A² = 64 - 64 + 16A - A²

100 = 16A

A = 6.25

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2 years ago

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2 years ago

What is the first step in solving the equation 3.5n+6.4=42.5?

Keith_Richards [23]

The first step to solving your equation would be to subtract 6.4 from both sides.

3.5n+6.4=42.5
Subtract 6.4
3.5n=42.5

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3 years ago

Read 2 more answers

I need help with 18-19​

I need help with 18-19