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3 years ago

Triangle DEFDEFD, E, F is similar to triangle PQRPQRP, Q, R. Solve for k.

Mathematics

1 answer:

vagabundo [1.1K]3 years ago

4 0

<h2>you were not him in a relationship that link was with a 1 minute</h2>

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Which could be an equation

IRINA_888 [86]

Answer:

i think maybe D

Step-by-step explanation:

Normally a equation has to have an equal sign and all the numbers add up

4 0

3 years ago

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In a video game, a bird is flung on a sling shot and follows a parabolic path. The path of the bird can be modeled by the equati

Novay_Z [31]

Answer:

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

Step-by-step explanation:

we have

$h=-16t^2+55t+4$

This is a vertical parabola open downward

The vertex represent a maximum

where

h is the height of the bird

t is the amount of time, in seconds, the bird had been in the air

For h=40 ft

substitute in the quadratic equation

$40=-16t^2+55t+4$

$-16t^2+55t+4-40=0$

$-16t^2+55t-36=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^2+55t-36=0$

$a=-16\\b=55\\c=-36$

substitute in the formula

$x=\frac{-55\pm\sqrt{55^{2}-4(-16)(-36)}} {2(-16)}$

$x=\frac{-55\pm\sqrt{721}} {-32}$

$x=\frac{-55+\sqrt{721}} {-32}=0.88\ sec$

$x=\frac{-55-\sqrt{721}} {-32}=2.56\ sec$

therefore

The bird will take 0.88 seconds to reach a height of 40 feet in the air for the first time

3 0

3 years ago

Colin put some buttons on a table. There were 4 blue buttons, 5 red buttons, 7 tan buttons, and 8 white buttons. Colin's cat jum

mixas84 [53]

4 out of 24 reduced to 1 out of 6 since there are 24 total buttons and 4 are blue. About 16.67%

7 0

3 years ago

Read 2 more answers

Please help . I’ll mark you as brainliest if correct.

MariettaO [177]

Answer:

[4, positive infinity]

Step-by-step explanation:

since f(4) exists, the interval starts at 4, and continues to infinity.

3 0

3 years ago

44 students completed some homework and the histogram shows information about the times taken. Work out an estimate of the inter

Vilka [71]

Answer:

q1=11

q3= 33

Step-by-step explanation:

The data set has 44 number of students. The first quartile is 25 % of the numbers in the data set . So

25 % of 44 = 25/100 * 44= 0.25 *44 = 11

So the first quartile lies at 11.

Similarly the third quartile lies at the 75 % of the numbers of the data set . So

75 % of 44 = 75/100 * 44= 0.75 *44 = 33

So the third quartile lies at 33.

5 0

3 years ago