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KonstantinChe [14]
2 years ago
14

Please help! Grade 7 math

Mathematics
1 answer:
yarga [219]2 years ago
8 0

Answer:

6 apple pies

Step-by-step explanation:

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Which equation could be represented by the number line?
Lunna [17]

Answer:

what is the eqaution?

Step-by-step explanation

3 0
3 years ago
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The function f(x)=125(0.9)x models the population of a species of fly in millions after x years.
deff fn [24]

Answer: (B) 3 times as fast

<u>Step-by-step explanation:</u>

rate of change is the "slope" between the given interval.

f(x) = 125(.9)ˣ

f(1) = 125(.9)¹

    = 112.5

f(5) = 125(.9)⁵

     = 73.8

\dfrac{f(5) - f(1)}{5 - 1} = \dfrac{73.8-112.5}{5-1} = -\dfrac{38.7}{4} = -9.675

********************

f(11) = 125(.9)¹¹

       = 39.2

f(15) = 125(.9)¹⁵

       = 25.7

\dfrac{f(15) - f(11)}{15 - 11} = \dfrac{39.2-25.7}{15-11} = -\dfrac{13.5}{4} = -3.375

********************

The rate of change from years 1 to 5 is approximately 3 times the rate of change from years 11 to 15.

7 0
3 years ago
A tree cast a shadow that is 20 feet long. Frank is 6 feet tall, and while standing next to the tree he cast a shadow that is 4
baherus [9]
A.  So we know that a 6 foot figure casts a shadow 4 feet long.  4 foot shadow x 5 = a 20 foot shadow.  So this means we take 6 x 5 = 30, and the tree is 30 feet tall.  
B.  30 - 6 = 24 feet taller than Frank 
8 0
3 years ago
Read 2 more answers
What is the order of operation of 100 + 6² - 9
Kipish [7]
Okay so you would use PEMDAS (parentheses, exponents, multiply, divide, add, and subtract) so there are no parentheses so you do the exponents
{6}^{2}  =  36
then you do the rest so 100+36=136 and then 136-9=127 so the answer is 127
6 0
3 years ago
Sonia is hanging up decorations in the ratio of 3red: 2green: 4white . If she hangs up 135 decorations in total , how many of ea
klasskru [66]

Answer:

She hung 45reds, 30greens and 60whites

Step-by-step explanation:

If Sonia is hanging up decorations in the ratio of 3red: 2green: 4white, the total amount of different she hung is 3+2+4 = 9different colours.

Of she hung 135decorations in total, the number of red = 3/9 × 135 = 45reds

Number of green = 2/9 × 135 = 30greens

Numbe of white = 4/9 × 135= 60whites

She hung 45reds, 30greens and 60whites

8 0
3 years ago
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