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3 years ago

Can someone help me 2a+3b=5 b=a-5

Mathematics

2 answers:

Orlov [11]3 years ago

3 0

Answer:

Step-by-step explanation:

2a+3b=5

5b=5

b=1

Dima020 [189]3 years ago

3 0

Answer: hey its ari

Step-by-step explanation:

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The base of a triangle exceeds the height by 7 feet. If the area is 114 square feet, find the length of the base and the height

Margarita [4]

Answer:

Height of the triangle = 12 feet

Base of the triangle = 19 feet

Step-by-step explanation:

Let the height of the triangle be x feet

-> Base of the triangle = (x + 7) feet

$A(\triangle)= 114\: ft^2$

$\because A(\triangle)=\frac{1}{2}(base)(height)$

$\implies 114=\frac{1}{2}(x+7)(x)$

$\implies 114\times 2= x^2+7x$

$\implies 228= x^2+7x$

$\implies x^2+7x-228=0$

$\implies x^2+19x-12x-228=0$

$\implies x(x+19)-12(x+19)=0$

$\implies (x+19)(x-12)=0$

$\implies (x+19)=0,\:\:(x-12)=0$

$\implies x =-19,\:\:x=12$

x represents the height of the triangle.

-> x can not take negative value.

$\implies x\neq -19$

$\implies x = 12$

$\implies x +7= 12+7=19$

Thus,

Height of the triangle = 12 feet

Base of the triangle = 19 feet

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2 years ago

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puteri [66]

Answer:

A=5 B=4
volume = 88

Step-by-step explanation:

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Which is greater, 1/4 or 9/20

Zina [86]

9/20

You need to have the same denominator so multiply it by 5 on the bottom and top to get 5/20 then you can compare it 5/20 < 9/20

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Leviafan [203]

Answer:

Step-by-step explanation:

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3 years ago

Help it’s easy pleaase

Igoryamba

-5—->-29
-1—->-5
0—->1
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4 years ago

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