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Irina18 [472]
3 years ago
9

Expand the expression: 2.2(-4k + 1)

Mathematics
2 answers:
evablogger [386]3 years ago
6 0

Answer:

8.8k + 2.2

Step-by-step explanation:

Kitty [74]3 years ago
5 0

Answer:

-8.8k+2.2

Step-by-step explanation:

2.2(-4k+1)

= -2.2*-4k+2.2*1

= -8.8k+2.2

Hope this helps!!!

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A Christmas gift is tied with ribbon the bow requires 47cm of ribbon, what is the total length of the ribbon in cm?
Sophie [7]

The complete question is as follows: A Christmas gift is tied with ribbon the bow requires 47cm of ribbon, what is the total length of the ribbon in cm?

Answer: The total length of the ribbon is 177 cm.

Step-by-step explanation:

As there are 4 sides of the rectangular box and 20 cm of ribbon is on each side. This means that a total of 4 \times 20 cm = 80 cm is there on the top and bottom.

Hence, length of ribbon attached at the left and right side of the box is as follows.

2.5 \times 10 cm = 25 cm\\2 \times 25 cm = 50 cm

This means that on both left and right side a total of 50 cm is there.

Therefore, total length of ribbon is as follows.

Total length = 47 cm + 50 cm + 80 cm = 177 cm

Thus, we can conclude that the total length of the ribbon is 177 cm.

7 0
3 years ago
5yd<br> 3 yd<br> 3 yd<br> Find the volume of the square pyramid.
shusha [124]

Answer:

i think its  45 meters cubed

Step-by-step explanation:

7 0
3 years ago
The graph shows a proportional relationship.What is the unit rate? Enter your answer as a decimal in the box..
Novosadov [1.4K]
(8,14)
rise is 14
run is 8
14/8=7/4

y=(7/4)x
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y=1.75x
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4 years ago
How to solve (2x-3)(3x+3)=36
mote1985 [20]
Use the distributive property to multiply the two sets of parentheses. You should have learned this in Algebra 1.
7 0
3 years ago
Read 2 more answers
A student draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-
faust18 [17]

Answer:

The positive difference between the a values is 0.5

Step-by-step explanation:

we know that

Both parabolas cross the x axis at (-4,0) and (6,0)

so

The general equation is

y=a(x+4)(x-6)

<em>Find the value of a in the first parabola</em>

The y-intercept is (0,-12)

so

For x=0, y=-12

substitute

y=a(x+4)(x-6)

-12=a(0+4)(0-6)

-12=a(-24)

a=0.5

<em>Find the value of a in the second parabola</em>

The y-intercept is (0,-24)

so

For x=0, y=-24

substitute

y=a(x+4)(x-6)

-24=a(0+4)(0-6)

-24=a(-24)

a=1

<em>Find the positive difference between the a values for the two functions</em>

so

1-0.5=0.5

5 0
3 years ago
Read 2 more answers
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