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Andre45 [30]
3 years ago
9

Which expression is equivalent to (64y100) 1/2 8y10 8y50 32y10 32y50

Mathematics
1 answer:
TiliK225 [7]3 years ago
6 0

Step-by-step explanation:

(64y100)1/2

1/2×64y 1/2×100

32y50

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John’s father is 5 times older than John and John is twice as old as his sister Alice. In two years time, the sum of their ages
oksano4ka [1.4K]

Answer:

8 years

Step-by-step explanation:

Let age of father be f

age of John be j

age of Alice be a

John's father is 5 times as old as John. We can write:

f = 5j

John is twice as old as Alice. We can write:

j = 2a

or

a = j/2

SUM OF ALL OF THEIR AGES (after 2 years) will be 58. We can write:

f+2 + j+2 + a+2 = 58

This becomes:

f + j + a + 6 = 58

f + j + a = 52

Now, we replace third equation with the first two (in bold) and get:

f + j + a = 52\\5j + j + \frac{1}{2}j=52\\6.5j=52\\j=8

So John is 8 years old

7 0
3 years ago
Consider the function f(x)=49.5(0.82)x select the correct word or phrase to complete each statement
Alex_Xolod [135]

Answer: exponential decay and 18%

Step-by-step explanation: Since what is in the parentheses is less than 1, it is exponential decay

3 0
3 years ago
Read 2 more answers
Pls can some help me
maxonik [38]

-4.75= z/2

Multiply both sides by 2

-4.75(2)= z/2(2)

Cross out 2 and 2, divide by 1 and becomes z

z=-9.5

Answer: z= -9.5

7 0
3 years ago
Read 2 more answers
Help me with this please its hard and i dont get it
9966 [12]
It's Feedback A. B is wrong because natural numbers would be reversed with whole numbers, and c is wrong because irrational numbers would be outside.
6 0
3 years ago
Read 2 more answers
IN (3)
svetoff [14.1K]

Answer:

(a) Rule: Multiply the input (x) by 2 and add 5 to the result of the product

(b) y  =2x +5

Step-by-step explanation:

Given

The attached table

Solving (a): The rule of the table in words

First, we calculate the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

Using:

(x_1,y_1) =  (2,9)

(x_1,y_1) =  (10,25)

So, we have:

m = \frac{25 - 9}{10 - 2}

m = \frac{16}{8}

m=2

The equation is calculated using:

y - y_1 =m(x - x_1)

Using:

(x_1,y_1) = (6,17)

We have:

y - 17 =2(x - 6)

y - 17 =2x - 12

Make y the subject

y  =2x - 12+17

y  =2x +5

Hence, the rule is:

Multiply the input (x) by 2 and add 5 to the result of the product

(b): The rule, in algebra

As solved in (a), the rule is:

y  =2x +5

8 0
3 years ago
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