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2 years ago

5

MODELS. a model ship is built to a scale of 1 centimeter. 5 meters. The legthn of the model is 30 centimeters what is the actual

length of the ship?

1 answer:

scoundrel [369]2 years ago

5 0

Each cm is 5 m so multiply each cm by 5m
Therefore 30cm X 5m/cm = 150 m

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Given the coordinates for the function below, who of the following are coordinates for its inverse?

lapo4ka [179]

Answer:

If we have a function f(x) that has an inverse g(x), we have the relations:

f( g(x)) = x

g( f(x)) = x

Then if the coordinates for the function f(x) are points like (x₁, y₁)

The coordinates for the inverse, g(x), will be (y₁, x₁)

Now let's look at the table, here we can see that the coordinates for f(x) are:

(0, 650)

(100, 550)

(200, 450)

(340, 310)

(650, 0)

Then the coordinates of the inverse function will be:

(650, 0)

(550, 100)

(450, 200)

(340, 310)

(0, 650)

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2 years ago

Someone please explain this

jeyben [28]

Answer:

the first one is the second one

the second one is the third one

7 0

3 years ago

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Convert 372 in Quinary number

Romashka [77]

Answer:

<em>372₁₀ = 2442₅</em>

Step-by-step explanation:

<em>372 : 5 = 74 r 2</em>

<em>74 : 5 = 14 r 4</em>

<em>14 : 5 = 2 r 4</em>

<em>2 : 5 = 0 r 2 ↑</em>

<em>write down the remainders in the reverse order</em>

<em />

<em>372₁₀ = 2442₅</em>

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3 years ago

11. What is the location of the vertex of the parabola defined by f(x) = −3x2 − 18x − 35 and in what direction does the parabola

lbvjy [14]

11. The given parabola has equation: $f(x)=-3x^2-18x-35$

We complete the square to have the function in the vertex form: $f(x)=-3(x^2+6x)-35$

$f(x)=-3(x^2+6x+9)+3*9-35$

$f(x)=-3(x^2+6x+9)+27-35$

$f(x)=-3(x+3)^2-8$

The vertex is (-3,-8), the graph opens down because a=-3<0

Ans: B. Vertex: (−3, −8), opens downward

12. We know the graph of $y=x^2$ is a parabola that opens up and has its minimum point at the origin.

The range of this function is $y\ge 0$

A straight line that has its y-intercept below the x-axis (y=3x-6) will not intersect $y=x^2$ and hence will form a system with no solution.

Ans: D. y equals x squared, y equals 3x minus 6

14. We want to find the zeros of $x^2+21x=5x-63$

$x^2+21x-5x+63=0$

$x^2+16x+63=0$

The factored form is $(x+7)(x+9)=0$

$x=-7\:or\: x=-9$

Ans: C. x = −7, −9

15. The given quadratic expression is $6x^2-17x+10$

We split the middle term to obtain:

$6x^2-12x-5x+10=0$

We factor by grouping to get:

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8 0

3 years ago

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If the number of Conference participants decreases by 20% compared to last year, there would be 1760 participants this year. If

Basile [38]

2,640 this year
2,112 last year

the 1760 is 20% less than - so 120% of 1760 is the previous year:
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2112 increased by 25% is a total of 125%:
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7 0

3 years ago

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