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3 years ago

At a pet store, Davina counted 12 parrots out of 20 birds. Which is an equivalent ratio of parrots to birds at the pet store?

2 answers:

5 0

D. 3 to 5 This is because if you simplify the ratio by dividing each number in the ratio by 4, therefore for every group of 5 birds 3 of them are parrots

Softa [21]3 years ago

4 0

Answer:

the answers D.

Step-by-step explanation:

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Write an equivalent expression to -2(1.5+5)-4(-0.5+3h)

finlep [7]

Answer:

-11-12h

Step-by-step explanation:

3 0

3 years ago

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Determine whether a figure with the given vertices is a rectangle using the Distance Formula.

Alex Ar [27]

Answer:

Yes; Opposite sides are congruent, and diagonals are congruent.

Step-by-step explanation:

we have

$A(4, -7), B(4, -2), C(0, -2), D(0, -7)$

we know that

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the length of the sides

Find the distance AB

substitute the values

$d=\sqrt{(-2+7)^{2}+(4-4)^{2}}$

$d=\sqrt{(5)^{2}+(0)^{2}}$

$AB=5\ units$

Find the distance BC

substitute the values

$d=\sqrt{(-2+2)^{2}+(0-4)^{2}}$

$d=\sqrt{(0)^{2}+(-4)^{2}}$

$BC=4\ units$

Find the distance CD

substitute the values

$d=\sqrt{(-7+2)^{2}+(0-0)^{2}}$

$d=\sqrt{(-5)^{2}+(0)^{2}}$

$CD=5\ units$

Find the distance AD

substitute the values

$d=\sqrt{(-7+7)^{2}+(0-4)^{2}}$

$d=\sqrt{(0)^{2}+(-4)^{2}}$

$AD=4\ units$

Compare the length sides

AB=CD

BC=AD

therefore

Opposite sides are congruent

step 2

Find the length of the diagonals

Find the distance AC

substitute the values

$d=\sqrt{(-2+7)^{2}+(0-4)^{2}}$

$d=\sqrt{(5)^{2}+(-4)^{2}}$

$AC=\sqrt{41}\ units$

Find the distance BD

substitute the values

$d=\sqrt{(-7+2)^{2}+(0-4)^{2}}$

$d=\sqrt{(-5)^{2}+(-4)^{2}}$

$BD=\sqrt{41}\ units$

Compare the length of the diagonals

AC=BD

therefore

Diagonals are congruent

The figure is a rectangle, because Opposite sides are congruent, and diagonals are congruent

8 0

4 years ago

Read 2 more answers

Which of these is the quadratic parent function?

hjlf

Answer:

B. f(x)= $x^{2}$

Step-by-step explanation:

8 0

3 years ago

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Hi, can someone help me on this. I'm stuck --

CaHeK987 [17]

Answer:

a) Fx=-5N Fy=-5*sqrt(3) N b) Fx= 5*sqrt(3) N Fy=-5N

c) Fx=-5*sqrt(2) N Fy=-5*sqrt(2) N

Step-by-step explanation:

The arrow's F ( weight) component on axle x is Fx= F*sinA and on axle y is

Fy=F*cosA

a) The x component and y component both are opposite directed to axle x and axle y accordingly. So both components are negative.

So Fx = - 10*sin(30)= -5 N Fy= -10*cos(30)= -10*sqrt(3)/2= -5*sqrt (3) N

b) Now the x component is co directed to axle x , and y component is opposite directed to axle y.

So x component is positive and y components is negative

So Fx = 10*sin(60)= 5*sqrt(3) N Fy= -10*cos(60)= -10*1/2= -5 N

c)The x component and y component both are opposite directed to axle x and axle y accordingly. So both components are negative.

So Fx = - 10*sin(45)= -5*sqrt(2) N

Fy= -10*cos(45)= -10*sqrt(2)/2= -5*sqrt (2) N

8 0

4 years ago

The side-by-side stemplot below displays the arm spans, in centimeters, for two classes.

Paul [167]

The statement that correctly describes the proportion of arm spans that are longer than 170 cm in the stem plot is C. The The proportion of arm spans that are longer than 170 cm is about the same for Class A and Class B.

<h3>How to illustrate the information?</h3>

It should be noted that from the information given, the variability of the arm span shows that they have about same variability.

Therefore, the statement that correctly describes the proportion of arm spans that are longer than 170 cm in the stem plot is C. The The proportion of arm spans that are longer than 170 cm is about the same for Class A and Class B.

Learn more about stem plot on:

brainly.com/question/27814661

#SPJ1

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2 years ago