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3 years ago

Use the linear combination method to solve this system of equations. What is the value of x?

Mathematics

1 answer:

Sati [7]3 years ago

3 0

Answer:

x = -3 2/3

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the area of a right triangle is 77 m^2. the hypotenuse has a length of √317 m. what is the length of the legs?

Alexxandr [17]

Answer:

11 m and 14 m

Step-by-step explanation:

Legs: x and y

---

1/2xy= 77 ⇒ xy= 154

√x²+y²= √317 ⇒ x²+y²=317

x²+y²+2xy= (x+y)²= 2*154+317= 625 ⇒ x+y= √625= 25

x= 25-y

xy=154 ⇒ y(25-y)= 154 ⇒ 25y- y²=154 ⇒ y²- 25y +154=0 ⇒ y=11 and y=14

x= 25-y= 14 and 11

4 0

4 years ago

In the right triangle above, a = 2.7 and b = 4.3. Find the value of c, rounded to the nearest tenth.

stiks02 [169]

It’s A your welcome

6 0

3 years ago

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En la finca de los padres de un amigo han sacado un total de 18.367,42 kg de aceitunas. Ellos tienen 648 olivos. ¿Cuántos kg de

ElenaW [278]

Answer:

Promedio de kg por arbol= 28.35kg

Step-by-step explanation:

Dada la siguiente información:

Cantidad de árboles= 648

Cantidad total de kg= 18.367,42 kg

Para calcular el promedio de kg por arbol, tenemos que usar la siguiente formula:

Promedio de kg por arbol= cantidad total de kg / número de arboles

Promedio de kg por arbol= 18.367,42 / 648

Promedio de kg por arbol= 28.35kg

3 0

3 years ago

Trey had a cylindrical can with a radius of 4 inches and a height of 12 inches that was completely full of beet juice. He poured

Slav-nsk [51]

Answer:

$8\ glasses\ of\ juice$

Step-by-step explanation:

step 1

Find the volume of the cylindrical can

The volume of the cylinder is equal to

$V=\pi r^{2}h$

we have

$r=4\ in$

$h=12\ in$

substitute the values

$V=\pi (4)^{2}(12)=192\pi\ in^{3}$

step 2

Find the volume of the cylindrical glasses

The volume of the cylinder is equal to

$V=\pi r^{2}h$

we have

$r=2\ in$

$h=8\ in$

substitute the values

$V=\pi (2)^{2}(8)=32\pi\ in^{3}$

Find the volume of 3/4 of the glass

$32\pi (\frac{3}{4})=24\pi\ in^{3}$

step 3

Divide the total volume of cylindrical can by the 3/4 volume of the glass

$192\pi\ in^{3}/24\pi\ in^{3}=8\ glasses\ of\ juice$

5 0

3 years ago

If x = 11 units and h = 7 units, then what is the area of the triangle shown?

m_a_m_a [10]

The answer is A because of base times height

3 0

3 years ago

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