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Morgarella [4.7K]

3 years ago

14

Solve 3x + 4x = 2. +

1 answer:

yan [13]3 years ago

4 0

Answer: $\frac{-2+\sqrt{10}}{3}$

Step-by-step explanation:

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Jeffrey earned $65 doing yard work he bought a pair of jeans for 3125 and a sweatshirt for 1650 he set aside the money left from

kogti [31]

Jeffrey set aside 12.25 for a gift.

6 0

3 years ago

The side lengths of the following right triangle 15,20 and 25, as shown below. The altitude from the right angle splits the hypo

kompoz [17]

Answer:

$h = 12$

$x = 9$

$y= 16$

Step-by-step explanation:

Given

The attached triangle

Required

Find h, x and y

Let the base of the triangle be 15.

So, the area is:

$A = \frac{1}{2} * 15 * 20$

$i.e\ height = 20$

$A = \frac{1}{2} * 300$

$A = 150$

Let the base of the triangle be 25.

So, the area is:

$A = \frac{1}{2} * 25 * h$

$i.e\ height = h$

$A = \frac{1}{2} * 25h$

Substitute $A = 150$

$\frac{1}{2}*25h = 150$

Solve for h

$h = \frac{150 *2}{25}$

$h = 6 *2$

$h = 12$

Considering the smallest triangle

$Hypotenuse = 15$

So:

$15^2 = h^2 + x^2$

$15^2 = 12^2 + x^2$

This gives:

$15^2 - 12^2 = x^2$

$81 = x^2$

Take square roots

$9 =x$

$x = 9$

Solving for y

$x + y = 25$

$y= 25 - x$

$y= 25 - 9$

$y= 16$

7 0

2 years ago

In a survey of 600 students, 80% said they liked pop music. How many students liked pop music?

Licemer1 [7]

Answer:

480 students

Step-by-step explanation:

600 x .80

4 0

3 years ago

Which number line represents the solution set for the inequality 1x24?

coldgirl [10]

Answer:

2 should be the correct one.

3 0

3 years ago

Please help i wanna move to the next grade,10 points

AfilCa [17]

Answer:

C -1

Step-by-step explanation:

$- 3x + 2 < 5$

$5 - 2 = 3$

$- 3x \div - 3$

$3 \div - 3 = - 1$

$x = - 1$

4 0

3 years ago