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3 years ago

Which expressions are equivalent to 4^-3/4^-1

Mathematics

1 answer:

Katen [24]3 years ago

7 0

Answer:1/16

Step-by-step explanation:

4^(-3)/4^(-1)=4^(-3-(-1))

4^(-2)=1/4^(2)=1/(4x4)=1/16

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1. 1.5 ÷ 1.2

kirill115 [55]

Answer:

1. 25

2. 5.7

3. 10.7

4. 204

5. 100.5

Step-by-step explanation:

calculator

6 0

3 years ago

Ryan is building a treehouse . It will take 85 & 1/4 hours to complete. He can work on the tree house 15 & 1/2 hours eac

Gnoma [55]

Answer:

<em> 5 1/2 weeks </em>

Step-by-step explanation:

Given

Time it will take to complete the building = 85 1/4 hrs

Time he works on the house weekly = 15 1/2 hours

This can be expressed as

1 week = 15 1/2 hours

To calculate the number of weeks it will take to complete the house, we will say:

x = 85 1/4

Cross multiply

15 1/2 x = 85 1/4

31/2 x = 341/4

31x/2 = 341/4

Cross multiply again

31x * 4 = 2 * 341

124x = 682

x = 682/124

x = 5.5weeks

<em>Hence it will take Ryan 5 1/2 weeks to complete the house</em>.

6 0

3 years ago

0 If 3x+ 11 = 86-5 the x = ?

evablogger [386]

The answer would be 23 1/3

7 0

3 years ago

Read 2 more answers

Can someone simplify

Rashid [163]

Answer:

Option (2). $2\frac{1}{4}$

Step-by-step explanation:

The given expression is [ $-5\frac{1}{4}-(-7\frac{1}{2})$ ]

We can rewrite the fractions as,

$-5\frac{1}{4}$ = $-(5+\frac{1}{4})$

$-7\frac{1}{2}=-(7+\frac{1}{2})$

Now we will substitute the fractions in the expression,

$[-(5+\frac{1}{4})]-[-(7+\frac{1}{2})]$

= $-(5+\frac{1}{4})+(7+\frac{1}{2})$

= (-5 + 7) + $(-\frac{1}{4}+\frac{1}{2})$

= 2 + $\frac{2-1}{4}$

= 2 + $\frac{1}{4}$

= $2\frac{1}{4}$

Therefore, Option (2). will be the answer.

7 0

3 years ago

The solution set for negative 2x^2 + 12x=0

alina1380 [7]

Answer:

Step-by-step explanation:

$2x^2+12x=0\qquad\text{divide both sides by 2}\\\\x^2+6x=0\\\\x(x+6)=0\iff x=0\ \vee\ x+6=0\qquad\text{subtract 6 from both sides}\\\\x=0\ \vee\ x=-6$

7 0

3 years ago