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Irina18 [472]
3 years ago
15

A tectonic plate in earth's crust moves at a constant rate of 4 centimeters per year. In a different part of the world, another

tectonic plate moves at a constant rate of 30 centimeters in ten years. Is this a proportional relationship?​ please help
Mathematics
1 answer:
prohojiy [21]3 years ago
4 0

Answer:

no

Step-by-step explanation:

if it is proportional it will equal to 4 x 10= 40cm

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HELP
Lostsunrise [7]

Answer:

A.

{b}^{2}  + 3b - 3 = 0

Step-by-step explanation:

{b}^{2}  + 3b - 3 = 0 \\ because \:  \:  {b}^{2}  < 4ac \\ {b}^{2}    = {3}^{2}  = 9 \\ 4ac = 4 \times 1 \times  - 3 =  - 12 \\ hence :  {b}^{2}  < 4ac

3 0
2 years ago
Do anyone know please and thank u
Varvara68 [4.7K]

Answer:

The correct answer is A

6 0
3 years ago
Read 2 more answers
Grandma Gertrude gave 131313 pieces of jewelry and Grandma Fien gave yyy pieces of jewelry to the Carlson sisters to divide even
alex41 [277]

Answer: (13 + y) / 5

Step-by-step explanation:

Since Grandma Gertrude gave 13 pieces of jewelry and Grandma Fien gave y pieces of jewelry to the Carlson sisters, the total jewellery given to the sisters will be:

= 13 + y

Since there are 5 Carlson sisters, the number of pieces of jewelry that each sister receive will be:

= Total jewelries / Number of sisters

= (13 + y) / 5

7 0
3 years ago
Read 2 more answers
An ant looks to the top of a bulding at an angle of elevation of 32°. The ant then walks an additional 66 feet from the edge of
Keith_Richards [23]
Let the height of the building be x. Let the initial distance of the ant from the building be y, then
tan 32 = x/y
y = x/tan 32 . . . . . . . . (1)
tan 22 = x/(y + 66)
y tan 22 + 66 tan 22 = x
y = (x - 66 tan 22)/tan 22 . . . . . . . . (2)
Equating (1) and (2), we have
x/tan 32 = (x - 66 tan 22)/tan 22
x tan 22 = x tan 32 - 66 tan 22 (tan 32)
x(tan 32 - tan 22) = 66 tan 22 (tan 32)
x = (66 tan 22 (tan 32))/(tan 32 - tan 22) = 66(0.4040)(0.6249)/(0.6249 - 0.4040) = 16.6626/0.2208 = 75.4

Therefore, the height of the building is 75.4 feet.
8 0
2 years ago
9 of 12
Deffense [45]

Answer:

40 flapjacks

Step-by-step explanation:

Given the recipe :

Recipe: Makes 10 flapjacks

120 g margarine

100 g sugar

150 mL syrup

225 g oats

40 g sultanas

Given that all other ingredients are kept Constant.

225g of oats produces 10 flapjacks

0.9 kg of oat = 0.9 * 1000 = 900g oat

If :

225 g = 10 flapjacks

900 g = x

Cross multiply :

225x = 900 * 10

225x = 9000

x = 9000 / 225

x = 40

40 flapjacks

7 0
2 years ago
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