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3 years ago

Solve x + 7 > 15 or 2x - 1 < 3.

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

5 0

Answer:16x?

Step-by-step explanation:

True [87]3 years ago

4 0

what that guy said 90

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Select each graph that shows a function and it’s inverse

Zielflug [23.3K]

I need to see the graphs... can you add them ?

4 0

3 years ago

Read 2 more answers

The surface area of a given cone is 1,885.7143 square inches. What is the slang height?

kap26 [50]

Answer:

If $r >> h$ , the slang height of the cone is approximately 23.521 inches.

Step-by-step explanation:

The surface area of a cone (A) is given by this formula:

$A = \pi \cdot r^{2} + 2\pi\cdot s$

Where:

$r$ - Base radius of the cone, measured in inches.

$s$ - Slant height, measured in inches.

In addition, the slant height is calculated by means of the Pythagorean Theorem:

$s = \sqrt{r^{2}+h^{2}}$

Where $h$ is the altitude of the cone, measured in inches. If $r >> h$ , then:

$s \approx r$

And:

$A = \pi\cdot r^{2} +2\pi\cdot r$

Given that $A = 1885.7143\,in^{2}$ , the following second-order polynomial is obtained:

$\pi \cdot r^{2} + 2\pi \cdot r -1885.7143\,in^{2} = 0$

Roots can be found by the Quadratic Formula:

$r_{1,2} = \frac{-2\pi \pm \sqrt{4\pi^{2}-4\pi\cdot (-1885.7143)}}{2\pi}$

$r_{1,2} \approx -1\,in \pm 24.521\,in$

$r_{1} \approx 23.521\,in \,\wedge\,r_{2}\approx -25.521\,in$

As radius is a positive unit, the first root is the only solution that is physically reasonable. Hence, the slang height of the cone is approximately 23.521 inches.

3 0

3 years ago

What does this equation equal? 4-2(-2)=

olga_2 [115]

Answer:

Step-by-step explanation:

Pemdas:

4-2(-2)

4+4

Hope this helped!

6 0

3 years ago

A rectangular mat has an area of 7/12 in2. The length of the mat is 5/6 in. What is the width of the mat

Pie

Step-by-step explanation:

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8 0

3 years ago

The width of a rectangle measures (7d + 8f) centimeters, and its

Andre45 [30]

The expression which represents the perimeter, in centimeters, of the rectangle is; (18d +10f) centimetres.

<h3>Perimeter of a rectangle</h3>

Since the perimeter of a rectangle is given by the formula;

Perimeter, P = 2l + 2w.

In essence, Perimeter, P = 2(2d – 3f) + 2(7d + 8f)

P = 4d -6f + 14d +16f

P = 18d +10f.

Ultimately, the perimeter of the rectangle is; (18d +10f) centimetres.

Read more on perimeter of a rectangle;

brainly.com/question/17297081

4 0

2 years ago