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Law Incorporation [45]
3 years ago
9

What multiplys to -90 and adds to 9?

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
3 0
The answer would be 3
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2 times the sum of a number and 5 is 20
d1i1m1o1n [39]

The number is 5. Steps shown below

8 0
3 years ago
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Select the correct answer(click the photo)
MatroZZZ [7]

Answer:

B.

General Formulas and Concepts:

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define function</u>

f(x) = 8x + 4

<u>Step 2: Prep</u>

  1. Rewrite:                         y = 8x + 4
  2. Swap <em>x</em> and <em>y</em>:               x = 8y + 4

<u>Step 3: Find Inverse (Solve for </u><em><u>y</u></em><u>)</u>

  1. Subtract 4 on both sides:                    x - 4 = 8y
  2. Divide both sides by 8:                       (x - 4)/8 = y
  3. Rewrite:                                                 y = (x - 4)/8
  4. Rewrite:                                                f⁻¹(x) = (x - 4)/8
3 0
3 years ago
Consider a triangle with angles 30o-60o-90o, with hypotenuse of length 2. Calculate the lengths of the other 2 sides and store t
kumpel [21]

Answer:

1.00 and 1.73

Step-by-step explanation:

1) Calculating the 1st and the 2nd leg using trigonometric function sine:

sin (30^{0})=\frac{c}{2}\Rightarrow \frac{1}{2}=\frac{c}{2}\Rightarrow 2*\frac{1}{2}=2*\frac{c}{2}\Rightarrow c=1\\sin(60^0)=\frac{b}{2}\Rightarrow \frac{\sqrt{3}}{2}=\frac{b}{2}\Rightarrow b=\sqrt{3}\Rightarrow\: b\approx \:1.73

Once one leg is found there is another way to find the other leg, using Pythagorean Theorem too.

a^{2}=b^{2}+c^{2}\Rightarrow 2^{2}=b^{2}+1^{2}\Rightarrow 4-1=b^{2}\Rightarrow b=\sqrt{3} b\approx 1.73

Sides

a hypotenuse: 2.00

-------------------------------

b leg: 1.73

--------------------------------

c leg: 1.00

--------------------------------

4 0
3 years ago
Knowing that, on a dice, the sum of the numbers of points marked on opposite sides is 7. What are the missing points?
Tomtit [17]

Answer:

How many of those ways have opposite face sums equal? ... Are there other ways we can number the dice as well? ... As you probably know, there are exactly five Platonic solids: the tetrahedron, cube, octahedron, ... On a normal 6-sided die, opposite faces add up to 6 + 1 = 7: 1 and 6, 2 and 5, 3 and 4

Step-by-step explanation:

trust me its right and can you be nice enough to mark me as brainliest

3 0
3 years ago
Help me match the tables w the equations
AVprozaik [17]

Answer:

6. C, 7. B

Step-by-step explanation:

6. y = -0.25x

-The initial number are 0 for both x and y

y is -1/4 of x

Answer: C

7. y= -0.25x-2

- The y-intercept is -2

y is -1/4 of x

Answer: B

I hope this helps :)

8 0
3 years ago
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