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Arlecino [84]
4 years ago
10

Find cos A if a=5, c=13

Mathematics
1 answer:
MatroZZZ [7]4 years ago
6 0
Hello I did a call in a couple hours I did call 83
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Nia and Trey both had sore throats, so their mom told them to gargle with warm salt water. Nia mixed 1 teaspoon salt with 3 cups
Harrizon [31]

Answer:

Each mixture has the same amount of salt for every 1 cup of water.

Step-by-step explanation:

It is provided that:

  • Nia mixed 1 teaspoon salt with 3 cups warm water.
  • Trey mixes 1 /2 teaspoon salt with one and 1/2 cups warm water.

The ratio of the number of teaspoons of salt to the number of cups of water is 1 : 3 in Nia's solution.

On dividing the amount of salt and the amount of water by 3, the ratio will be the same.

\text{Salt}: 1\div3=\frac{1}{3}\\\\\text{Water}:3\div3=1\\

Thus 1 : 3 is equivalent to the ratio \frac{1}{3}:1, which means that Nia's solution has \frac{1}{3}teaspoon of salt for every cup of water.

The ratio of the number of teaspoons of salt to the number of cups of water is \frac{1}{2}:1\frac{1}{2} in Trey’s solution.

On dividing the amount of salt and the amount of water by 1\frac{1}{2}, the ratio will be the same.

\text{salt}:\frac{1}{2}\div 1\frac{1}{2}=\frac{1}{3}\\\\\text{Water}:1\frac{1}{2}\div1\frac{1}{2}=1

So Trey’s ratio is also equal to the ratio \frac{1}{3}:1.

Since each mixture has the same amount of salt for every 1 cup of water, they are equally salty and taste the same.

4 0
3 years ago
At Stacy's Hats, 41 out of the 82 hats at the store are baseball caps. What percentage of hats at the store are baseball caps
Natali5045456 [20]

Answer:

50 percent

Step-by-step explanation:

3 0
3 years ago
Consider the equation -5\cdot e^{10t}=-30−5⋅e
yulyashka [42]

The approximate equation is n = (ln 6)/10 and approximate value is n = 0.179.

<h3>What is Exponential equation?</h3>

In mathematics, an exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

Here, given equation; (we are using n in place of t)

          -5.e¹⁰ⁿ = -30

      On dividing -5 both sides, we get

           -5.e¹⁰ⁿ/-5 = -30/-5

                e¹⁰ⁿ  = 6

 Taking 'ln' on both side, we get

             10n = ln 6

              n = (ln 6)/10

              n = 1.791759/10

              n = 0.179

Thus, the approximate equation is n = (ln 6)/10 and approximate value is n = 0.179.

Learn more about exponential function from:

brainly.com/question/14355665

#SPJ1

4 0
3 years ago
The following pairs of equations are equivalent. Describe the operation that occurred in the second equation. 3+9=12 and 3+9-5=1
elena55 [62]

Answer:

See explanation

Step-by-step explanation:

A. Given the equation

3+9=12

Using the subtraction property of equality (subtracting 5 from both sides of equation), we'll get an equivalent equation

3+9-5=12-5

B. Given the equation

x-4=7

Using the addtion property of equality (adding 4 to both sides of equation), we'll get an equivalent equation

x-4+4=7+4

C. Given the equation

2(6)=12

Using the division property of equality (dividing  both sides of equation by 2), we'll get an equivalent equation

\dfrac{2(6)}{2}=\dfrac{12}{2}

D. Given the equation

\dfrac{x}{2}=5

Using the multiplication property of equality (multiplying  both sides of equation by 2), we'll get an equivalent equation

2\cdot \dfrac{x}{2}=2\cdot 5

8 0
3 years ago
Whats the difference between a proper fraction and an improper fraction 10 POINTS
Svetach [21]

the difference between a proper fraction and an improper fraction is an improper fraction is a fraction that is bigger then the denominator for example 3/4 is a fraction and 7/4 is an improper fraction

6 0
3 years ago
Read 2 more answers
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