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lukranit [14]
3 years ago
7

Select all decimals that are equivalent to

Mathematics
1 answer:
shtirl [24]3 years ago
7 0

Answer:

B, E

Step-by-step explanation:

( 9 × 100 )  +  ( 2 × 10 )  +  ( 3 × 0.10 )  +  ( 5 ×0.01 )  = 920.35

A.  92.35

B.  920.350

C.  902.35

D.  92.350

E.  920.35

F. 920.035

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¿Cuál de los siguientes puntos no pertenece a la función cuadrática f(x) = 1-x^2 ?
dusya [7]

Answer:

<h2>A. (0,1)</h2>

Step-by-step explanation:

The question lacks the e=required option. Find the complete question below with options.

Which of the following points does not belong to the quadratic function

f(x) = 1-x²?

a.(0,1) b.(1,0) c.(-1,0)

Let f(x) = 0

The equation becomes 1-x² = 0

Solving 1-x² = 0 for x;

subtract 1 from both sides;

1-x²-1 = 0-1

-x² = -1

multiply both sides by minus sign

-(-x²) = -(-1)

x² = 1

take square root of both sides;

√x² = ±√1

x = ±1

x = 1 and x = -1

when x = 1

f(x) = y = 1-1²

y = 1-1

y = 0

when x = -1

f(x) = y = 1-(-1)²

y = 1-1

y = 0

Hence the coordinate of the function f(x) = 1-x² are (±1, 0) i.e (1, 0) and (-1, 0). The point that does not belong to the quadratic function is (0, 1)

3 0
3 years ago
720 over P = 9, what's P
snow_tiger [21]

Answer:

80

Step-by-step explanation:

720/P = 9/1

Cross multiply.

9P = 720

P = 720/9

P = 80

8 0
3 years ago
A store is having a 20% off sale on all merchandise. If Mai buys one item and saves $13, what was the original price of her purc
Nadusha1986 [10]

Answer:

Step-by-step explanation:

If a store is having a 20% off sale

By buying an item you save 20% of the price

If Mai saves $13 on an item she is also saving 20%

$13 = 20% of the price

$65 = 100% of the original price

$65 is your answer!

5 0
3 years ago
Read 2 more answers
Can someone help me and give an explanation
Kitty [74]

Two triangles: left triangle with y degrees and 40 degrees and right triangle with x degrees.

  • 40 degrees from the left triangle, when adding with the unknown angle of the right triangle, is equal to 180 degrees.
  • Adding left triangle's (third) undetermined angle and x degrees angle (the other same angle), is equal to 90 degrees.
  • The right triangle is an isosceles triangle, meaning two equal angles, and one of them is x degrees. Thus, the other same angle is also x degrees.

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

1) Subtract 180 - 40 = 140 degrees. 140 degrees is the unknown angle of right triangle.

2) 140 + x + x = 180 (equation)

  • 140 + 2x = 180
  • 2x = 180 - 140
  • 2x = 40
  • x degrees = 20 degrees

ANSWER: x = 20 DEGREES

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

1) With knowledge of x degrees being 20 degrees, the other same angle is 20 degrees, too.

2) Subtract 90 - 20 = 70 degrees. 70 degrees is the (third) undetermined angle

of left triangle.

2) 70 + 40 + y = 180

  • 110 + y = 180
  • y = 180 - 110
  • y = 70 degrees

ANSWER: y = 70 DEGREES

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

Whew. Hope this helps you out, and let me know asap if you're confused on any part.

6 0
3 years ago
What is the inverse of the function f(x) = 2x – 10?
o-na [289]

If <em>h(x)</em> is the inverse of <em>f(x)</em>, then by definition of inverse function, we have

<em>f(h(x))</em> = <em>x</em>

By definition of <em>f(x)</em>, composing <em>f</em> with <em>h</em> gives

<em>f(h(x))</em> = 2 <em>h(x)</em> - 10

Solve for <em>h(x)</em> :

<em>x</em> = 2 <em>h(x)</em> - 10

2 <em>h(x)</em> = <em>x</em> + 10

<em>h(x)</em> = (<em>x</em> + 10)/2

<em>h(x)</em> = <em>x</em>/2 + 5

So... whichever option most closely resembles this is the correct one. It's hard to tell exactly which one that would be.

6 0
3 years ago
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