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11111nata11111 [884]
3 years ago
7

The temperature has been going down at a constant rate. In 4 hours it went down 12 degrees. Which expression best shows the temp

erature change each hour?
Mathematics
1 answer:
Nookie1986 [14]3 years ago
4 0

Answer:

i think its 45 % but where are the expressions

Step-by-step explanation:


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Taylor saw sunglasses for $90, that were on sale for 10% off. She had her Employee
Korolek [52]

Answer:

81 dollars

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Suppose you are managing 15 employees, and you need to form three teams to work on different projects. Assume that all employees
Afina-wow [57]

Answer:

There are 17,418,240 different ways to choose the teams.

Step-by-step explanation:

Arrangements of n elements:

The number of possible arrangements of n elements is given by:

A_{n} = n!

In how many different ways can the teams be chosen so that the number of employees on each project are as follows: 9, 4, 2?

This is:

Arrangement of 9 elements, followed by an arrangement of 4 elements followed by an arrangement of 2 elements. So

T = A_{9}*A_{4}*A_{2} = 9!*4!*2! = 362880*24*2 = 17418240

There are 17,418,240 different ways to choose the teams.

7 0
2 years ago
3. Let sin 21 = 0.358. What is the value of x for cos x=0.358?
r-ruslan [8.4K]

Answer:

\cos(69)

Step-by-step explanation:

We will use the co-function identity for sine, where:

\sin(x)=\cos(90-x)

Since sin(21)=0.358=cos(x). This means that:

21=90-x

Solve for x. Add x to both sides:

x+21=90

Subtract 21 from both sides:

x=69\textdegree

Hence:

\sin(21)=\cos(69)\approx0.358

6 0
2 years ago
In the number 777,777, the 7 in the tens place is 1/10 the value of the 7 in the ____ place?
musickatia [10]

Answer: ones place

Step-by-step explanation:

One tenth of ten is one

7 0
3 years ago
Read 2 more answers
Chen is bringing fruit and veggies to serve at an afternoon meeting. He spends a total of $28.70 on 5 pints of cut veggies and 7
cricket20 [7]

Answer:

The price of a pint of veggies is $1.75

Step-by-step explanation:

* Lets change the story problem to equations and solve them to find

 the answer

- Chen is bringing fruit and veggies to serve at an afternoon meeting

- He spends a total of $28.70 on 5 pints of cut veggies and 7 pints

 of cut fruit

- The food cost is modeled by the equation 5 v + 7 f = 28.70, where

  v represents the cost of one pint of cut veggies and f represents

  the cost of one pint of cut fruit

∴ The first equation is 5 v + 7 f = 28.70 ⇒ (1)

- The cost of each pint of fruit is $2.85

∵ f represents the cost of one pint of cut fruit

∴ f = 2.85

- Substitute the value of f in equation (1) to find the value of v

∵ 5 v + 7 f = 28.70 ⇒ (1)

∵ f = 2.85

∴ 5 v + 7 (2.85) = 28.70

∴ 5 v + 19.95 = 28.70

- Subtract 19.95 from each side

∴ 5 v = 8.75

- Divide both sides by 5

∴ v = 1.75

∵  v represents the cost of one pint of cut veggies

∴ The price of a pint of veggies is $1.75

7 0
3 years ago
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