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antoniya [11.8K]
4 years ago
15

Write two formulas for the area of a triangle

Mathematics
2 answers:
kotegsom [21]4 years ago
8 0

Answer:

Hi mate your answer is

Step-by-step explanation:

Area of traingle equal 1/2×base×height

We have divided by two this is because you know the are of a rectangle is base + height but a triangle is like cut rectangle into two half pieces of you look carefully than to make any traingle a rectangle you will have to take another on opposite side so that's why we divide it by two

If you need further help plz ask

xz_007 [3.2K]4 years ago
3 0

Answer:

The answer is ...

Step-by-step explanation:

Area = 1/2bh

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Amelia ,Hayden and Sophie did a test the total for the test was 75 marks Amelia got 56% of 75 marks Hayden got 8/15 0f the 75 ma
boyakko [2]

Step-by-step explanation:

Amelia got 56% of 75 so

(56/100)*75=(56*75)/100=4200/100=42

Hayden got 8/15 of 75 so

(8/15)*75=(8*75)/15=600/15=40

and Sophie that got 43 out of 75

so we see that Sophie got the highest points.

6 0
3 years ago
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A ballpark sells bags of popcorn for $1 each and bags of peanuts for $2 each. Hector will buy x bags of popcorn and y bags of pe
Rasek [7]

Answer:

Hector will buy 6 peanut bags and he will buy 2 ppopcorn bags

Step-by-step explanation:

He will buy 6 bags of peanuts because that will be 12$ and he will buy 2 popcorn bags because it will be 2$. He only wanted to buy 8 bags of snacks and he only wanted to spend 14$. Hope this helps!!! :)

6 0
3 years ago
If 20 articles cost ? 90, then the cost of 9 articles is ?
lianna [129]

Answer:

40.50

Step-by-step explanation:

90/20 = 4.50

4.50 x 9 = 40.50

6 0
3 years ago
True or False: If your expression contains more than one set of parentheses, you should evaluate all of them
Scrat [10]

Answer:

You should evaluate whatever is in the parenthesis first.

4 0
4 years ago
Find the equation of the straight line which passes through the point (-1,3) and make intercept on x - axis as thrice that on y
Triss [41]

Answer:

y = -\frac{1}{3}x + \frac{8}{3}

Step-by-step explanation:

Given

(x_1,y_1) = (-1,3)

Intercept\ on\ x-axis = Intercept\ on\ y-axis.

Required

Determine the equation

First, we calculate the intercepts using:

\frac{x}{a} + \frac{y}{b} = 1

Where

b = Intercept on y axis.

a = Intercept on x axis.

From the question:

a = 3b

The equation becomes:

\frac{x}{3b} + \frac{y}{b} = 1

Multiply through by 3b

x + 3y  = 3b

We have: (x_1,y_1) = (-1,3)

So:

-1 + 3 * 3 = 3b

8 = 3b

Make b the subject

b = \frac{8}{3}

Substitute b = \frac{8}{3} in x + 3y  = 3b to get the equation

x + 3y = 3 * \frac{8}{3}

x + 3y = 8

Make 3y the subject

3y = -x + 8

Make y the subject

y = -\frac{1}{3}x + \frac{8}{3}

5 0
3 years ago
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