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3 years ago

1. Find the value of x. 55° (4x - 5)° O 26 O

Mathematics

1 answer:

Paha777 [63]3 years ago

7 0

Answer:

Step-by-step explanation:

The sum of angles in a triangle is 180 degrees, use this and set up an equation;

x + ( 4x -5 ) + 55 = 180

Simplify

x + ( 4x - 5 ) + 55 = 180

5x + 50 = 180

Inverse operations;

5x + 50 = 180

-50 - 50

5x = 130

/5 /5

x = 26

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25 Points emergency Plz help! WILL MARK BRAINLEAST 100%

ExtremeBDS [4]

Answer: (0, -7)

Step-by-step explanation:

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3 years ago

5x-3y=1,3x+2y=1 solve the simultaneous equation above

ryzh [129]

Answer:

The solution to the equation is as follows;

$x = \frac{5}{19} ,\ and \ y= \frac{2}{19}$

Step-by-step explanation:

Given;

5x - 3y = 1

3x + 2y = 1

Solving both equation simultaneously;

2: 10x - 6y = 2

3: 9x + 6y = 3

--------------------------

19x + 0 = 5

x = 5/19

substitute the value of x in any of the equations above and solve for y;

5x - 3y = 1

5 (5/19) - 3y = 1

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$3y = \frac{25}{19} -1\\\\3y = \frac{25-19}{19} \\\\3y = \frac{6}{19} \\\\y = \frac{2}{19}$

3 0

3 years ago

I need help on this

Lana71 [14]

Step-by-step explanation:

it is 0.7777777778 . make sure you round it though 0.7^. or 0.78

3 0

3 years ago

Read 2 more answers

The table shows the distance the students a group of students walked during after-school practice. What was the total distance,

ser-zykov [4K]

First let's convert the decimal numbers to mixed numbers:

$\begin{gathered} 3.4=3+0.4=3+\frac{4}{10}=3+\frac{2}{5}=3\frac{2}{5} \\ 1.75=1+0.75=1+\frac{75}{100}=1+\frac{3}{4}=1\frac{3}{4} \\ 2.25=2+0.25=2+\frac{25}{100}=2+\frac{1}{4}=2\frac{1}{4} \end{gathered}$

Now, adding all the numbers, we have:

$\begin{gathered} (3+\frac{2}{5})+(3+\frac{1}{5})+(1+\frac{3}{4})+(2+\frac{1}{4})+(1+\frac{7}{10}) \\ =(3+3+1+2+1)+(\frac{2}{5}+\frac{1}{5}+\frac{3}{4}+\frac{1}{4}+\frac{7}{10}) \\ =10+(\frac{3}{5}+1+\frac{7}{10}) \\ =11+(\frac{6}{10}+\frac{7}{10}) \\ =11+\frac{13}{10} \\ =12+\frac{3}{10}=12\frac{3}{10} \end{gathered}$

So the correct option is B.

8 0

1 year ago

3. Arya wants to take a trip to Japan in 8 years. She knows she will need about $4,200. How much should

algol13

Answer:

c. $3,174

Step-by-step explanation:

Using a financial calculator, enter the following inputs to find the Present value (PV) ;

Future value; FV = 4,200

Total duration ; N = 2,920 <em>(365 days in a year times 8 years; 8 * 365 = 2920)</em>

Daily interest rate; I = 3.5% /365 = 0.009589%

PMT = 0

then CPT PV = 3,174.338

Therefore, Arya should deposit $3,174

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3 0

3 years ago