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anyanavicka [17]
4 years ago
8

Simplify this expression and show each step.

Mathematics
2 answers:
aniked [119]4 years ago
8 0
<span>Simplify this expression and show each step.
4(3x + 2) -2
= 12x + 8 - 2
= 12x + 6

</span><span>Factor the expression completely
20b - 16
= 4(5b - 4)</span>
Y_Kistochka [10]4 years ago
5 0
4(3x+2)-2                          Expression    

12x+8-2                            Distribute the 4 into the parenthesis

12x+6                                Simplify


20b-16                               Expression

4(5b-4)                               Take out GCF of 4

5b-4=0                               Set up equal to 0

5b=4                                   Add 4 to both sides

b= \frac{4}{5}                    Divide by 5 on both sides                              
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Drive 1,800 mi in 30 h
ella [17]
<span>1800 mi / 30 hr = 60 mi/hr


hope that helped</span>
6 0
3 years ago
How many grams of cream that is 10% fat should a barista add to 120 grams of cream that is 20% fat mixture to get a 18% fat mixt
Doss [256]

Answer:

x = 30

Step-by-step explanation:

10% fat = 0.1x

x = the solution, what we want to find

120 grams of 20% fat = 0.2 * 120

What we want is mixture of 18%

So....

0.1x + 0.2 * 120 = 0.18 (x + 120)

Solve:

0.1x + 24 = 0.18 (x +120)

0.1x + 24 = 0.18x + 21.6

24 = 0.08x + 21.6

x = 30

4 0
3 years ago
Plsss Help!! Will mark brainiest!! Due soon!!
Gnom [1K]

m <3 = 52 °

Explicación paso a paso:

Puntos para recordar

1). El rombo es un paralelogramo. Los ángulos opuestos son suplementarios.

2). Las diagonales bisecan los ángulos de cada esquina.

3). Los ángulos alternos internos son iguales.

4). Todos los lados son iguales

Para encontrar la medida de <3

De la figura podemos ver un paralelogramo.

Se da que, n <3 = 80

Sabemos que m <1 = m <3

Por propiedad de suma de ángulos,

m <1 + m <1 + m <3 = 180

3 * m <1 = 180 - 80 = 100

<m1 = 100/2 = 50

Por lo tanto m <3

6 0
3 years ago
Read 2 more answers
(4,?) is on the line 8x - 3y = -10. Find the other half o the coordinate
Charra [1.4K]
(4, ?) is on 8x - 3y = -10

The ? is the missing y coordinate.  (4, y) satisfies 8x - 3y = -10

8x - 3y = -10.      From point (4, y),  we would replace x = 4 in the equation below. y remains the unknown.

8*4 - 3y = -10

32 - 3y = -10

-3y = -10 - 32

-3y = - 42

y = -42/-3

y = 14

So the coordinate is (4, 14)
6 0
3 years ago
a circle centered at the origin contains the point (0,-9). does (8, square root 17) also lie on the circle? explain.
belka [17]

Answer:

Yes

Step-by-step explanation:

The radius of the circle is 9. If we imagine the distance to (8,  sqrt 17) as a right triangle, where one leg is 8 and the other is square root 17, we can use the Pythagorean formula to solve this

8^2 (64) + sqrt 17^2 (17)= c^2

81=c^c

9=c

we can see that since the radius to the origin is 9, this point indeed lies on the circle.

6 0
3 years ago
Read 2 more answers
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