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yan [13]
2 years ago
14

Devon is five years younger than Sydney the sum of their ages is 57 what is Sydney

Mathematics
1 answer:
Nikolay [14]2 years ago
3 0

Answer:

Sydney is 31 years old.

Step-by-step explanation:

LET age of Devon be x years

and let age of Sydney be y years

if x=y-5-------(i)

x+y= 57 (sum)

Using (i)

(y-5)+y=57

2y=62

y=31

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How many solutions does 3 - 2x = 5 - x + 3 + 4x have?
vitfil [10]

Well let's see.

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The equation has exactly one solution.

Hope this helps.

5 0
3 years ago
Solve the following equation x(x + 19) = -34
xxMikexx [17]
Hi there,

x(x + 19) = -34

I'm going to solve your equation step-by-step.<span><span>x<span>(<span>x + 19</span>) </span></span>= <span>−34

</span></span>Step 1: Simplify both sides of the equation.<span><span><span>x2 </span>+ <span>19x </span></span>= <span>−34

</span></span>Step 2: Subtract -34 from both sides.<span><span><span><span>x2 </span>+ <span>19x </span></span>− <span>(<span>−34</span>) </span></span>= <span><span>−34 </span>− <span>(<span>−34</span>)

</span></span></span><span><span><span><span>x2 </span>+ <span>19x </span></span>+ 34 </span>= 0

</span>Step 3: Factor left side of equation.<span><span><span>(<span>x + 2</span>) </span><span>(<span>x + 17</span>) </span></span>= 0

</span>Step 4: Set factors equal to 0.<span><span><span>x + 2 </span>= <span><span><span>0<span> or </span></span>x </span>+ 17 </span></span>= 0

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</span></span>Answer:<span><span>x = <span>−<span><span>2<span> or </span></span>x </span></span></span>= <span>−<span>17

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5 0
3 years ago
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timofeeve [1]
Just plug in the numbers into the equation.

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c = children
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The information given says there are 25 adults and 5 children. So now:

a = 25
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c = 5
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Now plug in the values. 
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This means that 110 meatballs are required for 25 adults and 5 children. 
8 0
3 years ago
What is the total cost of a $2,099 couch including the 6.5% sales tax?​
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Answer:

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8 0
2 years ago
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b = 128 answers it is alternate angle

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