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Readme [11.4K]
2 years ago
8

(x ÷ 8) + 23 – 4 = 36

Mathematics
1 answer:
kifflom [539]2 years ago
3 0

Answer:

(x ÷ 8) + 23 – 4 = 36

x = 136

Step-by-step explanation:

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What is the height of a solid box that has a mass of 438 g, a destiny of 2.17 g/cm, a length of 40 cm, and a width of 20 cm.​
lapo4ka [179]
  • <em>Answer:</em>

<em>h ≈ 0.25 cm</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there !</em>

  • <u><em>density formula</em></u>

<em>d = m/V</em>

<em>V = l×w×h</em>

<em>replace</em>

<em>2.17 = 438/(40×20)×h</em>

<em>2.17 = 438/800×h</em>

<em>2.17×800×h = 438</em>

<em>1736h = 438</em>

<em>h = 438/1736</em>

<em>h ≈ 0,25 cm</em>

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4 0
3 years ago
Pam jogged 15 and 3/4 miles in 3 hours. At this rate how long would it take Pam to jog 28 and 7/8 miles?
Lorico [155]
First, let’s find the distance Pam jogs in one hour.
15.75/3 = 5.25 mph.
Now, simply divide 28.875 (28 and decimal of 7/8) by our new rate.
28.875/5.25 = 5.5 hours. Choice B
3 0
2 years ago
Given the following three points, find by hand the quadratic function they represent.
RideAnS [48]

Answer:

The equation is;

f(x) = -2·x² + 5·x - 1

Step-by-step explanation:

The general form of a quadratic equation  or function f(x) is, f(x) = y = a·x² + b·x + c

Given that the points representing the quadratic function are;

(-1, -8), (0, -1), (1, 2) which  are of the form (x, y)

When x = -1, f(x) = y = -8

Plugging in the above values into the general form of a quadratic function, we have;

-8 = a·(-1)² + b·(-1) + c = a - b + c

-8  = a - b + c.........................(1)

When x = 0, y = -1, we have;

-1 = a·(0)² + b·(0) + c = c

c = -1.......................................(2)

When x = 1, y = 2, which gives;

2 = a·(1)² + b·(1) + c = a + b + c

2 = a + b + c........................(3)

Adding equation (1) to equation (3), we have;

-8 + 2 = a - b + c + a + b + c

-8 + 2 = 2·a + 2·c

From equation (2) c = -1, we get;

-8 + 2 = -6 = 2·a + 2·c = 2·a + 2 × (-1)

-6 = 2·a - 2

-4 = 2·a

a = -2

From equation (3), we have

2 = a + b + c

Substituting the values of a, and c gives;

2 = -2 + b - 1

b = 2 + 2 + 1 = 5

b = 5

The equation is therefore;

f(x) = -2·x² + 5·x - 1.

3 0
3 years ago
Need help! Can anyone please help me? It would be much appreciated. Please view the attached photo. Will mark as brainliest!
seraphim [82]

Answer:

  B)  0.0073 mm/s

Step-by-step explanation:

The rate of change of area is the product of the circumference and the rate of change of radius:

  dA/dt = C·dr/dt

  dr/dt = (dA/dt)/C

Of course, C = 2πr, so ...

  dr/dt = (7 mm²/s)(2π·152 mm) ≈ 7/955.04 mm/s ≈ 0.0073 mm/s

6 0
3 years ago
Consider the slopes and y-intercepts of each system of equations.
Alja [10]

Answer:

a.true

b.false

c.false.

d.false

6 0
3 years ago
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