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zalisa [80]
2 years ago
8

For what value of k, the following pair of linear equations has unique solution

Mathematics
1 answer:
riadik2000 [5.3K]2 years ago
8 0

Answer:

uv UC uh uh uh uh uh uh uh all tardy txt tch tch addressed to you and your family a very happy and prosperous new year and I have to go go go go go go go go go go go go in to comes to that and return to me and I will pick ⚒️⛏️ me know if you have u I love you too and miss you too babe I love it ❤️ me know when you're ready tomorrow morning to get the money to you and your team for the impostor

Step-by-step explanation:

gucci figure ucc txt ucc p on ohh I thought you were going to be a little late to the party but I love you and I thought I tttty me know if you need anything else from me please let me know if you need anything else from me please let's do that you have a great holiday season and a few others are not going me

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A metalworker has a metal alloy that is 25% copper and another alloy that is 60% copper.How many kilograms of each alloy should
Neporo4naja [7]

Answer:

20kg of 25% copper alloy

30kg of 60% copper alloy

Step-by-step explanation:

There are 2 kinds of metal, first metal(A) have 25% copper while the second metal(B) has 60% copper. The metalworker want to create 50kg of metal, which means the total weight of both metals is 50kg (A+B = 50). The metalworker also want the metal made of a 46% which is 23kg(0.25A + 0.6B = 0.46*50). From these sentences, we can derive 2 equations. We can solve this with substitution.

A+B = 50

A= 50-B

Let's put the first equation into the second.

0.25A + 0.6B = 0.46 *50

0.25(50-B) + 0.6B =23

12.5 - 0.25B + 0.6B =23

0.35B=23 -12.5

B= 10.5/ 0.35= 30

Then we can solve A

A= 50-B

A= 50-30

A=20

8 0
3 years ago
Is 7/8 or 11/10 closer to 1? How did you decide anybody help please?
erik [133]

Let

A-----> \frac{7}{8}

B-----> \frac{11}{10}

C-----> 1

we know that

Point A-------> Multiply numerator and denominator by 10

\frac{7*10}{8*10} =\frac{70}{80}

Point B-------> Multiply numerator and denominator by 8

\frac{11*8}{10*8} =\frac{88}{80}

Point C-------> Multiply numerator and denominator by 80

\frac{1*80}{1*80} =\frac{80}{80}

Find the distance Point A to Point C

\frac{80}{80} -\frac{70}{80} =\frac{10}{80}

Find the distance Point B to Point C

\frac{88}{80} -\frac{80}{80} =\frac{8}{80}

therefore

\frac{8}{80} < \frac{10}{80}

Point B is closer to Point C

\frac{11}{10} is closer to 1

the answer is

\frac{11}{10} is closer to 1

5 0
3 years ago
Read 2 more answers
A line passes through the point (4,9) and has a slope of 5/2.
kkurt [141]

Answer:

5/2

Step-by-step explanation:

BRAINLIEST

8 0
3 years ago
Divide 32x4 − 12x2 + 7x by 2x.<br><br> What is the quotient?
miss Akunina [59]
<span> 32x4 - 12x2 + 7x
-------------------
           2x</span>
5 0
2 years ago
Read 2 more answers
In 2010, the population of a city was 114,000. From 2010 to 2015, the population grew by 7.7%. From 2015 to 2020, it fell by 6.6
vovikov84 [41]

Answer:

From 2010 to 2015 the population grew by 8778 (rounded answer 8800)

Step-by-step explanation:

*

6 0
2 years ago
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