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maw [93]
3 years ago
9

Simplify the expression -3 (b-7)

Mathematics
1 answer:
Nataliya [291]3 years ago
5 0
Simply distribute the -3 across the b and -7.

-3(b - 7) = (-3 * b) + (-3 * -7) = -3b + 21

Hope this was helpful, if it wasn't just drop me a DM explaining what didn't make sense.
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Carter can bake 11 cookies with each scoop of flour. With 4 scoops of flour, how many cookies can Carter bake?​
VMariaS [17]

Answer:

41

Step-by-step explanation: 11 coookies per cup of flour. 4 cups of flour. 11 x 4 = 41

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3 years ago
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Simplify: (k⁴)(k⁷)(k⁰)<br>a.k⁰<br>b.k²⁸<br>c.k¹¹<br>d.k¹²​
attashe74 [19]

Answer:

c.k¹¹

Step-by-step explanation:

Anything raised to the power of 0 is one so k^0=1

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Since they have the same base you can just add them

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3 years ago
Round each number to the nearest whole number.  What is the best estimate for the answer to 276.37 – 67.81?   A. 209   B. 208.6
pav-90 [236]
A.209


<span>276.37 – 67.81 = 208.56
The 5 in .56 means round up.
This means 208.56 will turn into 209.</span>
8 0
3 years ago
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2) 3x + 4y = 8<br> 2x+y=42<br> a) (30, -19)<br> b) (31, -20)<br> c) (32,-22)<br> What is the answer
kirza4 [7]

Answer:

C

Step-by-step explanation:

We can solve simultaneous equations using substitution method, elimination method or graphical method. But for this purpose, we will be using the elimination method.

3x+4y=8 Equation 1

2x+y=42 Equation 2

Multiply Equation 1 by 2 and equation 2 by 3, so as to get the same coefficient for x

2(3x+4y=8)= 6x+8y=16 Equation 3

3(2x+y=42)= 6x+3y=126 Equation 4

Subtract equation 4 from 3, to eliminate x

6x-6x=0

8y-3y= 5y

16-126= -110

We now have 5y=-110

Divide both sides by 5,

y= -110/5

= -22

Substituting for y in equation 2

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2x= 42+22

2x=64

x= 64/2

= 32

(x, y)

(32, -22)

7 0
3 years ago
A calculator may be used for this question. The energy saving from recycling one glass bottle will power the oven Adam uses to c
anastassius [24]
6 hours=360 minutes
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7 0
3 years ago
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