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2 years ago

Please help me will give brainliest

Mathematics

2 answers:

AnnyKZ [126]2 years ago

6 0

Answer:

you can do $\frac{3}{2}x + \frac{1}{2}x + x = 180$ or you can do 3x = 180

Step-by-step explanation:

cestrela7 [59]2 years ago

4 0

Answer is x=60
Because

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Evgen [1.6K]

Answer: 39°

Step-by-step explanation:

Angle of depression must be less than 90° but greater than 0°

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2 years ago

The height,h,increased by 6 inches

prisoha [69]

Required algebraic expression is h + 6

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3 years ago

the equation 25-3.99p represents the amount of money itzel has left over after buying p bottles of nail polish. what does the co

valina [46]

Answer:

The coefficient 3.99 represent the cost of one bottle of nail polish.

Step-by-step explanation:

Given:

The equation to represent the amount of money left after buying 'p' bottles of nail polish is given as:

$25-3.99p$

The remaining amount with Itzel can be calculated as:

Remaining amount = Initial amount - Cost of 'p' bottles.

The above expression tells us two things:

1. Initial amount of money Itzel has was 25.

2. The cost of 'p' bottles of nail polish is $3.99p$ .

Therefore, the cost of one bottle is calculated using the unitary method is given as:

$\textrm{Cost of 1 bottle}=\frac{\textrm{Cost of 'p' bottles}}{\textrm{Number of bottles}}\\\\\textrm{Cost of 1 bottle}=\frac{3.99p}{p}=3.99$

Therefore, cost of 1 bottle of nail polish is 3.99. Hence, coefficient 3.99 represent the cost of one bottle of nail polish.

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3 years ago

Is "A quotient of a number and seven" a expression or equation

Gekata [30.6K]

Expression. Hope this helps. Have a good day.

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2 years ago

/// WORTH 70 points /// ASAP ////

belka [17]

A community is developing plans for a pool and hot tub. The community plans to form a swim team, so the pool must be built to certain dimensions. Answer the questions to identify possible dimensions of the deck around the pool and hot tub.

Part I: The dimensions of the pool are to be 25 yards by 9 yards. The deck will be the same width on all sides of the pool. Including the deck, the total pool area has a length of (x + 25) yards, and a width of (x + 9) yards.

Write an equation representing the total area of the pool and the pool deck. Use y to represent the total area. Hint: The area of a rectangle is length times width. (1 point)

$y = (x+25)(x+9)$

Rewrite the area equation in standard form. Hint: Use the FOIL method. (1 point)

$y = x^2 + 9x + 25x + 9(25)$

$y = x^2 +34x + 225$

Rewrite the equation from Part b in vertex form by completing the square. Hint: Move the constant to the other side, add to each side, rewrite the right side as a perfect square trinomial, and finally, isolate y. (4 points: 1 point for each step in the hint)

$y-225 = x^2 +34x$

$y-225 + 17^2 = x^2 +34x + 17^2$

$y-225 + 289 = (x+17)^2$

$y = (x+17)^2 - 64$

What is the vertex of the parabola? What are the x- and y-intercepts? Hint: Use your answer from Part a to identify the x-intercepts. Use your answer from Part b to identify the y-intercept. Use your answer from Part c to identify the vertex. (4 points: 1 point for each coordinate point)

The vertex is where the squared term is zero, x=-17 , y =-64, (-17,-64)

The y intercept is y at x=0, so (0,225)

The x intercepts are the zeros; so at x=-25 and x=-9, aka (-25,0), (-9,0)

Graph the parabola. Use the key features of the graph that you identified in Part d. (3 points)

[Plot the points we generated and connect the dots. I'll leave the graphing to you]

In this problem, only positive values of x make sense. Why? (1 point)

<em>x</em> is the width of the pool edge; it must be positive.

What point on your graph shows a total area that includes the pool but not the pool deck? (1 point)

x=0, y=225 i.e. (0,225)

The community decided on a pool area that adds 6 yards of pool deck to both the length and the width of the pool. What is the total area of the pool and deck when x = 6 yards? (2 points)

(9+6)(25+6)=15(31)=465

Part II: A square hot tub will be placed in the center of an enclosed area near the pool. Each side of the hot tub measures 6 feet. It will be surrounded by x feet of deck on each side. The enclosed space is also square and has an area of 169 square feet. Find the width of the deck space around the hot tub, x.

Step 1: Write an equation for the area of the enclosed space in the form y = (side length)2. Hint: Don't forget to add x to each side of the hot tub. (1 point)

$y=(x+6)(x+6)=(x+6)^2$