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jek_recluse [69]
3 years ago
11

What is the value of C so that -9 and 9 are both solutions of x squared+ C=103

Mathematics
1 answer:
Feliz [49]3 years ago
7 0

Step-by-step explanation:

Any number squared will be a positive number.

-9 or 9 squared will equal 81.

81 + C = 103

C = 103 - 81

22

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LCM of 2 085 and 252
Oliga [24]

Answer:

175140 is the LCM of 2 085 and 252

4 0
3 years ago
find to consecutivephone number such that five times the smaller number plus 3 times the greater number make 59 hint let the num
Scorpion4ik [409]

Answer:

x = 7 is the answer for the smaller number

7 + 1 = 8 is the answer for the larger number

Step-by-step explanation:

LET x and  x+1 be the two numbers here, as your hint suggests.

5x + 3(x+1) = 59

5x + 3x+3 = 59

8x = 59-3

8x = 56

/8      /8

--------------------------

x = 56/8 ---> x = 7

x = 7 is the answer for the smaller number

7 + 1 = 8 is the answer for the larger number

Check:

5 * 7 + 3 * 8 = 59

35 + 24 = 59

59 = 59 CORRECT

7 0
3 years ago
The sum of two numbers is 21.
mafiozo [28]

Answer:

Pretend that x and y represents the 2 numbers that we need to find.

According to the information, we know that:

x + y = 21

6x = y

Replace y in the first equation with 6x (because they are equal to each other according to the second equation):

x + y = 21

x + 6x = 21

7x = 21

x = 21/7 = 3

Now have two ways to find y, both will give us the same result:

3 + y = 21 ⇔ y = 21 - 3 = 18

6 · 3 = y ⇔ y = 18

So the numbers that we need to find are 3 and 18.

7 0
3 years ago
Read 2 more answers
9. In the figure at right, GH = HI = IJ. Find the length of AK.
marysya [2.9K]
<span>GH = HI = IJ
3( 3.75) = 17.25
so
6.5/AK  = 5.75 /17.25
AK = 17.25 * 6.5 / 5.75
AK = 19.5

answer
</span><span>the length of AK = 19.5</span>
4 0
3 years ago
Find the equation of a line with the given points.(put your answers in the form y=mx+b.)(7,2)(5,4)
Shkiper50 [21]
4-2 over(draw a line) 5-7 =2 over -2 =-1 Next find your y intercept 4=-1(5) multiply -1 ×5 = -5 add 5 +4 =9 Final answer=y=-1×+9
3 0
3 years ago
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