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BARSIC [14]
2 years ago
9

Evi likes 24 shirts out of her 30 shirts

Mathematics
2 answers:
Ivenika [448]2 years ago
7 0
.8 is the ans in decimal
Elza [17]2 years ago
4 0

Answer:

80%

Step-by-step explanation:

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A number to the 10th power divided by the same number to the 7th power equals 125. What is the number?
Viefleur [7K]

Answer:

the number is 5

Step-by-step explanation:

x^10 ÷ x^7 = 125

x^3 = 125

x = 5

6 0
3 years ago
For each direct variation find the constant of variation then find the value of Y when X equals -0.5. Y equals 2 when X equals 3
Readme [11.4K]

For direct variation y varies directly with x, then we use equation y = kx

Where k is the constant of proportionality

Given: Y equals 2 when X equals 3

We plug in 3 for x  and 2 for y and solve for k

y = kx

2 = k(3)

Divide both sides by 3

\frac{2}{3} =k

Now we plug in 2/3 for k  

y=\frac{2}{3}x

Given x=-0.5  and find out y

y=\frac{2}{3}(-0.5)

y=-0.33

the value of y is -0.33 when x=-0.5


4 0
2 years ago
Bruce has a bottle that contains 60% lemon juice and the rest water. The bottle has 1 liter of water.
Cloud [144]

<span>part A:
Let 
t =  total the liquid in the bottle including lemon juice and water
so t =  lemon juice + water ( w = water, l = lemon juice) so t = l + w
but the bottle has 1 liter of water. and <span>60% lemon juice
</span>contains 60% lemon juice = 0.6, so l = 0.6t and w(water ) = 1 liter
t = l + w
substitute l = 0.6t and w = 1 into t = l + w
now you have equation
t = 0.6t + 1

part B:
from part A, you have equation t = 0.6t +1
solve for t
 t = 0.6t +1
subtract 0.6t on both sides
t - 0.6t = 0.6t - 0.6t + 1
simplify
0.4t = 1
divide both sides by 0.4
0.4t/0.4 = 1/ 0.4
simplify
t = 2.5

2.5 liters is total including lemon juice and water
2.5 - 1(1 liter of water) = 1.5 <span>1 liter of lemon juice</span></span>
8 0
3 years ago
Read 2 more answers
An arithmetic sequence is defined by the recursive formula t1 = 11, tn = tn - 1 - 13, where n ∈N and n &gt; 1. Which of these is
galben [10]

coolio

t_1=11

t_n=t_{n-1}-13

so each term is ound by subtracting 13 from the previous term


an aritmetic sequence can be written as

t_n=t_1+d(n-1) were

t_n is the nth term

t_1 is the first term

d is common difference, which can also be found by doing t_n-t_{n-1}=d

n=wich term


we know that t_1=11 and we can find d

t_n=t_{n-1}-13, t_n-t_{n-1}=-13=d

so te general term is t_n=11-13(n-1) which can also be expanded and written as t_n=-13n+24

6 0
3 years ago
Write a formula to describe the sequence
Dominik [7]

Answer:

d

Step-by-step explanation:

A(n) = 1 - 0.1(n-1)

A(1) = 1- 0.1*(1-1) = 1 - 0.1*0 = 1

A(2) = 1- 0.1*(2-1) = 1 - 0.1*1 = 1- 0.1 = 0.9

A(3) = 1 - 0.1(3-1) = 1 - 0.1*2 = 1-0.2=0.8

Method:

A(1)=1

D = A(2)-A(1) = 0.9 - 1 = -0.1

A(n) = A(1)+(n-1)*d = 1 + (n-1)*(-0.1)

     = 1 - 0.1(n -1)

     

8 0
3 years ago
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