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3 years ago

Solve using substitution. x+y=-9 and -2x-3y=17

1 answer:

6 0

Answer:
x = -10
y= 1
explanation:
x+y = -9
y = -9 - x
-2x -3 (-9 - x) = 17
-2x +27 +3x = 17
27 + x = 17
x = -10
y = -9 -(-10)
y= -9 + 10
y= 1
(This is just math i did real quick and didnt double check, tell me if its wrong please!)

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Hoochie [10]

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4 years ago

Help me please find the value of x then find the measure of each unknown angle

neonofarm [45]

The value of x is 103.

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<h3>What is the value of x?</h3>

The sum of angles on a straight line add up to 180 degrees.

180 - 77 = 103

180 - 121 = 59

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12 x + 36 = 180

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3 years ago

Given that a, b and c are positive integers, and abc=210, what is least possible sum for a+b+c

Vesnalui [34]

Answer:

The least possible sum for a+b+c is 18.

Step-by-step explanation:

As given a,b and c are positive integers and abc = 210

So, let us consider some situation in which the product abc = 20

If a, b and c are 5, 6 and 7 then

abc = 210 & a+b+c = 18

If a, b and c are 3, 7 and 10 then

abc = 210 & a+b+c = 20

If a, b and c are 7, 15 and 2 then

abc = 24 & a+b+c = 24

If a, b and c are 2, 5 and 21 then

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3 years ago

Part 2 - Find the error(s) and solve the problem correctly.

JulijaS [17]

The problem solved correctly as a single logarithm is $log_{a} 2x^{3}/y^{2}$

<h3>Simplifying Logarithm</h3>

From the question, we are to simplify the given logarithm

The given logarithm is

$log_{a} 2x \ + \ 2(log_{a} x -log_{a} y)$

From the subtraction law of logarithm, we have that

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Thus,

The error in the solution was instead of multiplying, a was supposed to be divided by b

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$log_{a} 2x \ + \ log_{a} (x^{2}/y^{2})$

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$log_{a} 2x^{3}/y^{2}$

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3 years ago

Solve using substitution. x+y=-9 and -2x-3y=17​

Solve using substitution. x+y=-9 and -2x-3y=17