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Virty [35]
3 years ago
5

I need 11-14 asap please

Mathematics
1 answer:
Olegator [25]3 years ago
3 0
11. 3(22-3y)-4y=-25
66-13y=-25
-13y=-91
Y=7
X=22-3(7)=1.
12,13,14 similar
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Complete the equation, and tell which property you used.<br><br> 8 x (14+7) = _________+ (8 x 7)
melamori03 [73]
By distributive property, 8 x (14 + 7) = (8 x 14) + (8 x 7)
8 0
3 years ago
PLS HELP.... If 4x^2 + bx + 9 = 0, where b is the constant, has exactly one solution, what is a possible value of b ?
IgorLugansk [536]
You can use the discriminant rule, which is :
b^2 -4ac
“exactly one solution” means that it is equal to zero
so:
b^2 -4(4)(9)=0
b^2 -4(36)=0
b^2 -144=0
b^2=144
square root both sides
b=12 or -12

hope this helps !
3 0
2 years ago
Read 2 more answers
How to make a number line
ioda

A number line is a line that extends infinitely in both directions (marked by arrows) that shows a range of numbers with a consistent distance between increments.

  1. Draw a line
  2. Draw arrows on both sides pointing out
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7 0
3 years ago
George and Carmen went on a bicycle trip. They took a bus to their starting point and then biked the rest. They traveled 350 kil
wlad13 [49]
Total distance covered by <span>George and Carmen
</span>x + y = 350
And they biked 80 kilometers more than they bussed
<span>80 + y = x </span>
Putting the value of x=80 + y in <span>x + y = 350:
</span>We get:
<span>80 + y + y = 350 </span>
<span>2y = 270 </span>
<span>y = 135 km</span>

<span>Substituting y = 135 in x + y = 350 </span>
<span>x + 135 = 350</span>
<span>x = 215 km </span>

Thus George and Carmen biked for 215 km and bussed for 135 km.
4 0
3 years ago
Expand the following 2(x+3)
Maksim231197 [3]

Answer:

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Step-by-step explanation:

2 will multiply everything inside the bracket.

2 x X =2x

2 X 3=6

6 0
3 years ago
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