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3 years ago

Rewrite 8y - 1/2 (4y - 16) in a different form

Mathematics

1 answer:

worty [1.4K]3 years ago

4 0

Answer:

8y-2y+8=0

6y+8=0

y=8/6=4/3

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Apply the problem-solving techniques to solve the following

soldier1979 [14.2K]

Answer:

By 2020, there will be 1,147 species of birds left

Step-by-step explanation:

The general model for an exponential decrease is;

y = I(1 - r)^t

where in this case;

y is the number of bird species at a particular decade from the initial

I is the number of birds initially at 1990

r is the decrease percentage which is 1.5% per decade ; 1.5% = 1.5/100 = 0.015

t in this case will be the number of decades after the initial

Mathematically, a decade is 10 years

The difference between 2020 and 1990 is 30

The number of decades in 30 years is 30/10 = 3

so t will be 3 here

Substituting these values into the equation, we have

y = 1200(1-0.015)^3

y = 1200(0.985)^3 = 1,146.8

To the nearest whole number, this is 1,147

5 0

3 years ago

Solve 5x - y = -38<br> 3x + 4y = 0

Tema [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Mary rolled three 1-6 cubes at the same time . She rolled 5,1 and 6 . Which list shows all the possible three-digit numbers she

Aleksandr [31]

Answer:

list no shows by three cube={1,1,1}

Step-by-step explanation:

three cubes rolled at same time

it gives these value {1,1,1},{1,,1,2},{1,1,3},{1,1,4},{1,1,5},{1,1,6},{1,2,1},{1,3,1},{1,4,1},{1,5,1},{1,6,1},{2,1,1},{3,1,1},{4,1,1},{5,1,1},{6,1,1}

list no shows by three cube={1,1,1} answer

7 0

4 years ago

7. Jack and Max share some counters. Jack has 3 times as many counters as Max.

FrozenT [24]

To answer this item, we let x be the number of counters that Max has. By the representation, the number of counters that Jack has is 3x.

a. Ratio of counters,
3x:x
which can be simplified by dividing by x both sides of the ratio giving us the answer of,
3:1

b. Fraction of counters Max have,
fraction = x / (x + 3x) = 1/4

6 0

3 years ago

The number of chips of different colors in Rick's bag is shown below

ozzi

1/9

because there are 21 chips in the bag 7 of them are yellow so 7/21

but you draw twice so you square it (7/21)^2=1/9

4 0

4 years ago