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sweet-ann [11.9K]
3 years ago
15

If 3x +y=12 find x when y=-15

Mathematics
1 answer:
maw [93]3 years ago
8 0

Answer:

x=9

Step-by-step explanation:

3x+y=12

3x+(-15)=12

3x=27

3/3= 27/3

x=9

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stepladder [879]
You’re answer is d (sum,sum).
7 0
3 years ago
Determine the correct value of 3x+2 when x =5
dedylja [7]

Answer:

17

Step-by-step explanation:

3(5)+2=17

3 0
3 years ago
Read 2 more answers
Two imaginary roots <br> A.144<br> B.O<br> D.-4<br> C.36
Vaselesa [24]

Answer:

D) -4 (with imaginary roots ±2i)

Step-by-step explanation:

Since you cannot take the square root of a negative number to produce a real result, the only option that has two imaginary roots is D) -4, where the two imaginary roots are 2i and -2i.

6 0
2 years ago
Hello, can someone explain/answer these?<br> You don't have to do both of them
MissTica

Answer:

#1= 5x5=25

25x the amount of squares= 25x6= 150cm^2

#2=  1.5x2.6= 3.9ft.

3.9xamount of right angle triangles= 3.9x8=31.2ft^2

(^2 means squared)

4 0
2 years ago
Ratio equal to 90:18
Vadim26 [7]

90:18

divide using 3 on both sides

90:18

30:6

10:2

now lets use 2

10:2

5:1

5:1 is the equal ratio  to 90:18

6 0
3 years ago
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