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Ymorist [56]
4 years ago
9

PLz i need help will mark brianly

Mathematics
2 answers:
Zigmanuir [339]4 years ago
5 0
Let's use substitution.
<span>y=−2x+3
y=13x−4
</span>
1. Substitute
<span><span>−2x+3=13x−4</span><span>
2. Solve for x
x = 7/15

3. Substitute x into the equation
y = 31/15

The answer is 
7/15, 31/15 </span></span>
gulaghasi [49]4 years ago
3 0
Since both the expressions in x are equal to y then they are equal to each other, so

-2x + 3 = 13x - 4

-15x + 3 = -4

-15x = -7 

x = 7/15

and y = -2(7/15) + 3 =  31/15  = 2 1/15
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Answer:

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Step-by-step explanation:

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6 0
3 years ago
The area of a triangle piece of stained glass is 50 centimeters if the height of the triangle is four times the base, how long a
gavmur [86]

Answer:

Base = 5 cm

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Step-by-step explanation:

Points to remember

Area of triangle = bh/2

Where b - base of triangle

h - Height of triangle

<u>To find the Height and Base of given triangle</u>

It is given that,area of a triangle piece of stained glass is 50 centimeters

the height of the triangle is four times the base

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Area = bh/2

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100 = 4b²

b² = 100/4 = 25

b =√25 = ±5

b = 5 then h = 4b = 4 * 5 = 20

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