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Bas_tet [7]
3 years ago
9

PLSSS HELLP!!!

Mathematics
1 answer:
JulijaS [17]3 years ago
3 0
The third one I think
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Multiply.
Fynjy0 [20]
.........The answer is B
8 0
3 years ago
2
zhenek [66]

Answer:

Just substitute the values in!
(-5/9) + (-4/3) - 2/3 = - 5/9 - 12/9 - 6/9 = -23/9.

7 0
2 years ago
Complete the equivalent equation for -7x-60=x^2+10x (x+ )(x+ )=0
Mariulka [41]
We have that
-7x-60=x²<span>+10x
</span>x²+10x+7x=-60
x²+17x=-60
(x²+17x+8.5²)=-60+8.5²
(x+8.5)²=12.25
(+/-)(x+8.5)=√12.25--------> (+/-)(x+8.5)=3.5
(+)(x+8.5)=3.5------> x=-5
(-)(x+8.5)=3.5------> x=-12

therefore
(x+5)*(x+12) is equivalent to -------> -7x-60=x²+10x  

the answer is
(x+5)*(x+12)

6 0
3 years ago
2. Next she needs to find her maximum heart rate m by subtracting her age a from 220. Write an
Travka [436]

Answer:

220 - a = m

Step-by-step explanation:

a is her age

7 0
3 years ago
Helppppp please answer 30 pointssss
Margarita [4]

Answer:

\frac{x}{3}  =  \frac{7x}{12x - 15}  \\ 12 {x}^{2}  - 15x = 21x \\ 12 {x}^{2}  -36x = 0 \\  12x(x - 3) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 3} \\  \\  \frac{25 - 3x}{x + 5}  = 1 \\ 25 - 3x = x + 5 \\ 3x + x = 25 - 5 \\ 4x = 20 \\ \boxed{ x = 5} \\  \\  \frac{3x - 2}{x}  =  -  \frac{8}{x}  \\ 3 {x}^{2}  - 2x =  - 8x \\  3 {x}^{2}  -6x = 0 \\ 3x(x - 2) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 2} \\  \\  \frac{3 - x}{x}  =  \frac{x + 1}{2x}  \\ 6x - 2 {x}^{2}  =  {x}^{2}  + x \\ 3 {x}^{2}  - 5x = 0 \\ x(3x - 5) = 0 \\  \boxed{x = 0} \: or \: \boxed{x =  \frac{5}{3} }

3 0
3 years ago
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