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3 years ago

Please help with this algebra problem!! thanks

Mathematics

2 answers:

saw5 [17]3 years ago

5 0

5.7t < 420 divide both sides by 5.7

5.7 5.7

t < 73.68

slega [8]3 years ago

5 0

Since the opposite of multiplication (5.7 times t) is division, you would divide 5.7 across the equal sign to 420. (420 divided by 5.7) so the answer would be t= 73.68... you can round that if it says too.

so, if a number or anything is right next to a variable (letter) like 5.7t for example, that is multiplication. same with if fractions are present, fractions would be division.

the opposite of multiplication is division, opposite of division is multiplication. and the opposite of addition is subtraction and the opposite of subtraction is addition.

whenever you cross over the equal sign, you use the opposite of what the original side did like add, subtract, multiply, or divide.

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3 years ago

Julian needs to spend at least seven hours each week practicing the drums he’s already practice 5 1/3 hours this week he wants t

hoa [83]

Answer:

(5.33 + 2h) ≥ 7

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Step-by-step explanation:

Let in the last two days Julian has to practice the drum for h hours each.

Then in two days, he has to practice 2h hours,

He has already practiced $5\frac{1}{3} = 5.33$ hours before those last two days.

Therefore, he has practiced this week by (5.33 + 2h) hours.

Now, given that Julian needs to spend at least 7 hours each week practicing the drums.

Hence, we can write the inequality

(5.33 + 2h) ≥ 7

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⇒ h ≥ 0.835 hours

Therefore, Julian has to practice for 0.835 hours for the last two days of the week. (Answer)

3 0

3 years ago

The sum of the measures of 2 angles is 90o. Angle C is 34o. Angle G is (3x-4)o. What is the value of x?

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Answer:

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Step-by-step explanation:

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7 0

3 years ago

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3 years ago

In relation t a functions? Is the inverse of relation t function

frozen [14]

Answer:

Relation t is a function. The inverse of relation t is not a function ⇒ 3rd

Step-by-step explanation:

* Lets explain how to solve the problem

- A relation is a set of inputs and outputs, and a function is a relation

with one output for each input

- Ex: T = {(1 , 2) , (3 , 5) , (-4 , 0)} is a function because every input has

only one output

- To find the inverse of a function we switched the input and the

out put

- The inverse of a function may not always be a function

* Lets solve the problem

∵ The relation t is the set of ordered pairs of x and y

x = 0 2 4 6

y = -8 -7 -4 -4

∵ x = 0 has only y = -8

∵ x = 2 has only y = -7

∵ x = 4 has only y = -4

∵ x = 6 has only y = -4

∴ Every value of x has only one value of y

∴ Relation t is a function

* Lets find its inverse by switching x and y

∵ The inverse function of t is :

x = -8 -7 -4 -4

y = 0 2 4 6

∵ x = -8 has only y = 0

∵ x = -7 has only y = 2

∵ x = -4 has y = 4 and y = 6

∴ Not every value of x has only one value of y

∴ The inverse of relation t is not a function

* Relation t is a function. The inverse of relation t is not a function

4 0

3 years ago