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2 years ago

The two rectangles below have the same height-to-width ratio. What is the

Mathematics

1 answer:

shepuryov [24]2 years ago

8 0

Answer:

B. 16.19

Step-by-step explanation:

We have given height to width ratio of two similar rectangles

Hence, we solve using Proportionality

Height a/Width a = Height b/Width b

21/34 = 10/w

Cross Multiply

21 × w = 34 × 10

w = 34 × 10/21

w = 16.19047619

Approximately to decimal places = 16.19

Option B is correct

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PLEASE HELP ME PLEASE ILL GIVE BRAINLIST FOR CORRECT ANSWERSSS

stich3 [128]

Answer:

One solution

Step-by-step explanation:

(10,-8)

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2 years ago

The cross section of a parabolic reflector has a vertical axis of symmetry with its vertex at (0,0) . The focus of the reflector

Paha777 [63]

Answer:

The depth of the reflector is 0.84 feet

Step-by-step explanation:

(See the figure below)

The equation of a parabola centered at the origin with an axis of symmetry on y-axis is:

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With p the distance from the origin to the focus using p=6, the equation (1) of the parabola becomes:

$x^{2}=4(6)y=24y$ (2)

Note that the point B is on the parabola, so this point should satisfy the parabola equation (2) that allow us to use the value x=4.5 to find the y value associated to it, that it is the depth (h) of the reflector:

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3 years ago

Solve the formula d = st for s

Delvig [45]

Answer: $s = \frac{d}{t}$

Step-by-step explanation:

You want to isolate s which means get it by itself. So all you gotta do is divide both sides by t

7 0

3 years ago

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RES Find (fºg)(1) Ax) = x2 - 1 g(x)= v a 0 c. 4. b. d. 18 Help pls

slava [35]

Answer:

Step-by-step explanation:

So we have the two functions:

$f(x)=x^2-1\\g(x)=\sqrt x$

And we want to find:

$(f\circ g)(1)$

This is the same as:

$f(g(1))$

So, to find the answer, find g(1) first:

$g(x)=\sqrt x\\g(1)=\sqrt1\\g(1)=1$

Now, substitute this value for g(1):

$f(g(1))\\=f(1)$

And plug this into f(x):

$f(x)=x^2-1\\f(1)=(1)^2-1\\f(1)=1-1=0$

Therefore:

$f(1)=f(g(1))=(f\circ g)(1)=0$

Our answer is A

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3 years ago

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Hardcover book sales for $24 at the bookmark men days of total of $25.02 for the book what is the sales tax rate

Ber [7]

25.02-24=1.02
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2 years ago