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2 years ago

Write a number sentence that tells what the model represents

Mathematics

1 answer:

kogti [31]2 years ago

6 0

Answer:

5x3=15

Step-by-step explanation:

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What is the solution of the equation 9 = -2x + 15? A -21 B -12 C 3 D 12

Nataly [62]

I think the answer is c: three

7 0

3 years ago

Read 2 more answers

HELP TIMER Write the equation of a hyperbola centered at the origin with x-intercept +/- 4 and foci of +/-2(squareroot 5)

nikitadnepr [17]

Answer:

$\frac{x2}{a} - \frac{y2}{b2} = 1$

Step-by-step explanation:

A hyperbola is the locus of a point such that its distance from a point to two points (known as foci) is a positive constant.

The standard equation of a hyperbola centered at the origin with transverse on the x axis is given as:

$\frac{X2}{16} - \frac{b}{4} = 1$

The coordinates of the foci is at (±c, 0), where c² = a² + b²

Given that a hyperbola centered at the origin with x-intercepts +/- 4 and foci of +/-2√5. Since the x intercept is ±4, this means that at y = 0, x = 4. Substituting in the standard equation:

I don't feel like explaining so...

a. = 4

The foci c is at +/-2√5, using c² = a² + b²:

B = 2

Substituting the value of a and b to get the equation of the hyperbola:

$\frac{x2}{a2} - \frac{y2}{b2} = 1$

$\frac{x2}{16} - \frac{b2}{4} = 1$

4 0

3 years ago

HEEELP ME GEOMETRY HW #29 AND #30 I'VE BEEN STUCK ON IT FOR HOURS!!!!!

natulia [17]

On #29 x = 12 and <apb = 90° and <dcb = 40° and on #30 all I dont even understand, sorry

5 0

3 years ago

Please solve this question the answer is 45 degree

malfutka [58]

Answer:

∠ABC= 45°

Step-by-step explanation:

∠ABC= ∠BCD (alt. ∠s, AB//CD)

(2x +15)°= (3x)°

2x +15= 3x

3x-2x= 15 (-2x on both sides)

x= 15

Substituting the value of x:

∠ABC

= ∠BCD

= [3(15)]°

= 45°

7 0

2 years ago

One hundred tickets, numbered 1, 2, 3, …, 100, are sold to 100 people for a drawing. Four different prizes are awarded, includin

stira [4]

Solution :

It is given that four different prizes were awarded. So,

a). 4 ways for person 47 to win a prize

99 ways to give out the 2nd prize

98 ways to give the 3rd prize

97 ways to give the last prize

∴ P(99,3) = 99 x 98 x 97

b). 1 way to give person 47 their prize

1 way to give person 19 their prize

98 ways to give out the 3rd prize

97 ways to give out the last prize

So, P(98,2) = 98 x 97

8 0

2 years ago