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Iteru [2.4K]
3 years ago
8

I need help with these question

Mathematics
1 answer:
Stella [2.4K]3 years ago
4 0
1. <span>In this case the two </span>equations<span> describe lines that intersect at one particular point. Clearly this point is on both lines, and therefore its coordinates (x, y) </span>will<span> satisfy the </span>equation<span> of either line. Thus the pair (x, y) is the one and only </span>solution<span> to the </span>system of equations<span>. 
 
i don't know 2</span>
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Ernesto baked 3 cakes in 2 1/2 hours. Assume that the number of cakes baked varies directly with the number of hours. Write and
soldier1979 [14.2K]

We know that in 2 ½ hours (2.5 hours), we can create 3 cakes hence:

C = k t

where C is number of cakes, k is constant, and t is time

k = 3 cakes / (2.5 hours)

k = 1.2

C = 1.2 t

 

So for t = 7 ½ hours = 7.5 hours

C = 1.2 (7.5)

<span>C = 9 cakes in 7 ½ hours</span>

5 0
3 years ago
Find y.<br><br> y - 4 = 3x - 5y
Vlad [161]
Answer:
y = -1 + -0.75x
explanation:
7 0
3 years ago
Read 2 more answers
Omar wrote 3 + ( 4 × 6 ) to represent the phrase "3 more then the product of 4 and 6." Did Omar need to use a grouping symbol? E
valentina_108 [34]
The order of operations is PEMDAS (parenthesis, exponents, multiplication/division, addition/subtraction).  This means that you do multiplication before adding, so 3 + 4*6 is the same thing as 3 + (4*6).  Because of this, Omar did not need to use a grouping symbol.
8 0
3 years ago
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Joe spent half of his weekly allowance playing mini-golf. To earn money, his parents let him weed the garden for $6. What is his
frosja888 [35]

Answer: Joe's weekly allowance = $12

Step-by-step explanation:

Joe spent half of his weekly allowance playing mini-golf

Let a = his weekly allowance

This means Joe spent a/2 playing mini-golf.

To earn money, his parents let him weed the garden for $6

This means Joe's total money

= a + 6

What is his weekly allowance if he ended with $12?

This means he had $12 left after spending a/2 from ta total of (a +6)

Therefore,

(a +6) -a/2 = 12

Taking LCM of 2

[2(a+6)-a]/2=12

Cross multiplying by 2

2a + 12-a = 24

a+12 =24

a = 24-12 =$12

Joe's weekly allowance = $12

6 0
3 years ago
The expression 4•4•4•4•4•4<br> can be expressed as<br> 4^5<br> 6^4<br> 5^4<br> 4^6
Alex73 [517]

the answer to your question is 4^6

6 0
4 years ago
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