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Aleonysh [2.5K]
3 years ago
8

Multiple choice someone please answer pleaseeee

Mathematics
1 answer:
Marysya12 [62]3 years ago
6 0

Answer:

x= 54.09

Step-by-step explanation:

cos = adjacent/ hypotenuse

cos75 = 14/x

x = 14/cos75

x = 54.09814627

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Match each fraction with its equivalent decimal number.
Oksana_A [137]
Changing a fraction to its decimal form can be done by long division method. Dividing the denominator by its numerator will change the fraction into decimal form. Alternatively, you can use a calculator to do that for you. Below are the fractions with their decimal forms listed:

1.) 2/5 = 0.4 (D)
2.) 7/20 = 0.35 (A)
3.) 3/25 = 0.12 (C)
4.) 7/10 = 0.7 (B)

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3 years ago
Write<br> 9/18<br> in lowest terms
kogti [31]

Answer:

1/2

Step-by-step explanation:

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pamela claims that if you multiply a fraction that is negative by another fraction that is negative, the product will also be ne
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3 years ago
Solve the logarithmic equation . Round the answer to four decimal places . 2^x =25
levacccp [35]

Answer:

x = 4.6439

Step-by-step explanation:

2^x =25

Take the log of each side

log  2^x = log 25

We know that log a^b = b log a

x log 2 = log 25

Divide each side by log 2

x = log 25  / log 2

x =4.643856

Rounding to 4 decimal places

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8 0
3 years ago
Read 2 more answers
When David was asked how old he was, he said " I'm three times younger than my dad, but twice as old as Rebecca. " Then little R
daser333 [38]

Using a system of equations, it is found that David is 12 years old.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

The variables are given as follows:

  • Variable x: David's age.
  • Variable y: Dad's age.
  • Variable z: Rebecca's age.

David is three times younger than the dad and twice as old as Rebecca, then:

  • x = y/3 -> y = 3x.
  • x = 2z.

Rebecca is 30 years younger than the dad, hence:

z = y - 30.

Then, since x = 2z and z = y - 30 and y = 3x, we solve for x to find David's age.

x = 2(y - 30)

x = 2(3x - 30)

x = 6x - 60

5x = 60

x = 60/5

x = 12.

David is 12 years old.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

8 0
2 years ago
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