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nata0808 [166]
4 years ago
5

Please can someone help me find X using sin cos and tan​

Mathematics
2 answers:
olga_2 [115]4 years ago
3 0

\sin30^\circ=\dfrac x{25}

\implies x=25\sin30^\circ=\dfrac{25}2

RSB [31]4 years ago
3 0

Answer:

12.5.

Step-by-step explanation:

sin 30 = opposite / hypotenuse:

sin 30 = x / 25

x = 25  sin 30

= 1/2 * 25

= 12.5.

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The length of a suitcase is 36 inches . The diagonal of the suitcase is about 51 inches . What is the width of the suitcase ,rou
Mrrafil [7]

<u>Given</u>:

The length of a suitcase is 36 inches.

The diagonal of the suitcase is about 51 inches.

We need to determine the width of the suitcase.

<u>Width of the suitcase:</u>

The width of the suitcase can be determined using the Pythagorean theorem.

Thus, we have;

d^2=l^2+w^2

where d is the diagonal, l is the length and w is the width.

Substituting the values, we get;

51^2=36^2+w^2

Squaring the terms, we have;

2601=1296+w^2

Subtracting both sides by 1296, we get;

1305=w^2

Taking square root on both sides, we get;

36.12=w

Rounding off to the nearest inch, we get;

36=w

Thus, the width of the suitcase is 36 inches.

4 0
4 years ago
Find the measure of an angle whose complement is five times its measure.
ch4aika [34]

Answer:

The measure of the unknown angle is 15°.

Step-by-step explanation:

Represent this angle by A.  Then the complement of A is 90° - A.

"Angle whose complement is five times its measure" would be expressed as

90° - A = 5A

Solve this for A by adding A to both sides:

90° = 6A.  Then A = 90°/6, or 15°

4 0
3 years ago
Electric wire: $1.49 for 3 ft. $.69 for 18 in.
vredina [299]
$1.49 3ft or $.69 1.5ft

69*2=138

$149 for 3ft or $1.49 1.5ft

options two are better buys


6 0
3 years ago
Zahara mixed 5 quarts of dry ingredients and 2 quarts of water to make a
krok68 [10]

Answer:

Zahara need to add 4 quarts of water to keep the  consistency the same

Step-by-step explanation:

Let

x -----> the amount of dry ingredients in quarts

y -----> the mount of water in quarts

we know that

Batch 1

\frac{x}{y}=\frac{5}{2}

Isolate variable y

y=\frac{2}{5}x ----> equation A

Batch 2

For x=10

substitute in the equation A and solve for y

y=\frac{2}{5}(10)=4

The ratio batch 2 is \frac{10}{4}

therefore

Zahara need to add 4 quarts of water to keep the  consistency the same

6 0
3 years ago
How many solutions does this system of equations have?
Phoenix [80]
<h3>Answer: D) infinitely many solutions</h3>

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

Explanation:

Let's solve the first equation for y

4x - 2y = 6

4x-6 = 2y

2y = 4x-6

y = (4x-6)/2

y = (4x/2) - (6/2)

y = 2x - 3

After doing so, we see that 4x-2y = 6 is equivalent to y = 2x-3

Therefore, the original system of equations is effectively listing the same equation twice (one has a different form compared to the other).

Both equations in this system produce the same graph, which leads to infinitely many solutions. All solutions are on the line y = 2x-3.

You can say that all solutions are in the form (x, 2x-3) where x is any real number you want.

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

Here's another approach using substitution

4x - 2y = 6 ... start with the first equation

4x - 2( y ) = 6

4x - 2( 2x-3 ) = 6 .... replace y with 2x-3; ie plug in y = 2x-3

4x - 2(2x) - 2(-3) = 6

4x - 4x + 6 = 6

0x + 6 = 6

0 + 6 = 6

6 = 6

We get a true statement. The last equation is always true regardless of what we plug in for x, so this is another way to see how we get to infinitely many solutions.

Side note: the system is considered dependent since one equation depends on the other. The system is also consistent since it has at least one solution.

8 0
3 years ago
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