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LekaFEV [45]
3 years ago
14

The following question has two parts. First, answer part A. Then, answer part B.

Mathematics
1 answer:
Arturiano [62]3 years ago
3 0

Answer:

  Part A:  13.2

  Part B:  see below

Step-by-step explanation:

<u>Part A</u>:

13.245 rounded to tenths is 13.2

<u>Part B</u>:

The rule is ...

  <em>Add 1 in the number place you're rounding to if the digit to its right is 5 or more. Drop (or zero) all digits to the right of the place you're rounding to.</em>

Here, the digit to the right of the tenths place is 4, so no action is taken other than dropping digits to the right of the tenths place.

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the cost of 5 cans of dog food is $4.35. at this price how much do 11 cans of dog food cost explain your reasoning. ASAP
mestny [16]

Answer:

Cost of 11 cans of Dog food is $9.57

Step-by-step explanation:

Cost of 5 cans of dog food = $4.35

So to find out the cost of 11 cans of dog food at the same price, we need to calculate the price of 1 can of dog food.

<u>Calculation for finding out cost of 1 can of dog food</u>

The price $4.35 which is given is the price of 5 cans

So to find the cost of 1 can, we need to divide the given price by 5

5 Cans of dog food = $4.35

1 can of dog food = 4.35 ÷ 5

1 can of dog food = $0.87


<em><u>Now to find out the price of 11 cans, we will multiply the price of 1 can with 11</u></em>

Cost of 11 cans = 11 × $0.87

                          = $9.57

6 0
2 years ago
Write expression as a sine or cosine of an angle.<br>cos 94° cos 18° + sin 94° sin 18° ​
MArishka [77]
<h3>Answer:  cos(76)</h3>

=========================================================

Explanation:

The original expression is of the pattern cos cos + sin sin. This pattern matches the second identity in the hint. Specifically, we'll say the following:

cos(A - B) = cos(A)cos(B) + sin(A)sin(B)

cos(A)cos(B) + sin(A)sin(B) = cos(A - B)

cos(94)cos(18) + sin(94)sin(18) = cos(94 - 18)

cos(94)cos(18) + sin(94)sin(18) = cos(76)

----------

We can verify this by use of a calculator. Make sure your calculator is in degree mode.

  • cos(94)cos(18) + sin(94)sin(18) = 0.24192
  • cos(76) = 0.24192

Both expressions give the same decimal approximation, so this helps confirm the two expressions are equal. You could also use the idea that if x = y, then x-y = 0. Through this method, you'll subtract the left and right hand sides and you should get (very close to) zero.

6 0
2 years ago
Combine like terms to create an equivalent expression.<br><br> 17−3(37n−27)71 −3( 73 n− 72)
patriot [66]

Answer:

\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})=1-\frac{9}{7}n

Step-by-step explanation:

Given : Expression \frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})

To find : Combine like terms to create an equivalent expression ?

Solution :

Step 1 - Write the expression,

\frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})

Step 2 - Apply distributive property, a(b+c)=ab+ac

=\frac{1}{7}-3\times \frac{3}{7}n+3\times \frac{2}{7}

=\frac{1}{7}-\frac{9}{7}n+\frac{6}{7}

Step 3 - Combine like terms,

=\frac{1}{7}+\frac{6}{7}-\frac{9}{7}n

=\frac{1+6}{7}-\frac{9}{7}n

=\frac{7}{7}-\frac{9}{7}n

=1-\frac{9}{7}n

Therefore,  \frac{1}{7}-3(\frac{3}{7}n-\frac{2}{7})=1-\frac{9}{7}n

4 0
3 years ago
Read 2 more answers
What is the value of x when -8x - (8x) = -48?
butalik [34]
X=3 you can combine like terms to get -16x= -48 and then divide -48 by -16 to get 3
7 0
3 years ago
How are the diagonals of a parallelogram related?
NikAS [45]

Answer:

  they bisect each other

Step-by-step explanation:

<em>The diagonals of a parallelogram bisect each other</em>.

__

If they are the same length, the parallelogram is a rectangle. If they cross at right angles, it is a rhombus.

4 0
2 years ago
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