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3 years ago

I don’t know this question? Can you pls answer it...

Mathematics

1 answer:

vladimir2022 [97]3 years ago

3 0

Answer:

12i

Step-by-step explanation:

be careful with your screenshots and make sure it doesnt show your name

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mars1129 [50]

Answer:

200 kg

Step-by-step explanation:

since 1 lb = 0.45 kg all you do is 90 ÷ 0.45

that'll get you 200

200 kg is how much Dane Danny weighs

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3 years ago

Show your work (organized!) for 2 points. Correct answer for 1 point. -2 - (-6) + (9÷3) . 4 | Please help!!

kaheart [24]

Whaaaat that doesn’t look like you typed right

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3 years ago

20 points.Cynthia has a bag of jellybeans. There are two red jellybeans, one yellow jellybean, and two black jellybeans in her b

solmaris [256]

Answer:

2/5

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

PLEASE HELP!!

Bezzdna [24]

Answer:

$y=-\dfrac{9}{40}x^2+\dfrac{441}{40}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

Step-by-step explanation:

If a parabola has its vertex on the y-axis, then its equation is

$y=ax^2+b$

This parabola passes through the point R(3,9), then

$9=a\cdot 3^2+b\\ \\9=9a+b$

The area of the right triangle PQR is

$A_{PQR}=\dfrac{1}{2}\cdot PQ\cdot QR$

Find PQ and QR, if $P(x_1,0),\ Q(3,0),\ R(3,9):$

$PQ=\sqrt{(x_1-3)^2+(0-0)^2}=|x_1-3|\\\\QR=\sqrt{(3-3)^2+(0-9)^2}=9$

Now,

$40.5=\dfrac{1}{2}\cdot |x_1-3|\cdot 9\\ \\90=9|x_1-3|\\ \\|x_1-3|=10\\ \\x_1-3=10\ \text{or}\ x_1-3=-10\\ \\x_1=13\ \text{or }x_1=-7$

We get two possible points $P_1(-7,0)$ and $P_2(13,0).$

For point $P_1:\\$

$0=a\cdot (-7)^2+b\\ \\49a+b=0$

So,

$b=-49a\\ \\9=9a-49a\\ \\-40a=9\\ \\a=-\dfrac{9}{40}\\ \\b=\dfrac{441}{40}\\ \\y=-\dfrac{9}{40}x^2+\dfrac{441}{40}$

For point $P_2:\\$

$0=a\cdot (13)^2+b\\ \\169a+b=0$

So,

$b=-169a\\ \\9=9a-169a\\ \\-160a=9\\ \\a=-\dfrac{9}{160}\\ \\b=\dfrac{1,521}{160}\\ \\y=-\dfrac{9}{160}x^2+\dfrac{1,521}{160}$

5 0

3 years ago

What is 67% of 112.6

Luba_88 [7]

67/100 = x/112.6
67*112.6 = 100*x
7544.2=100x
7544.2/100 = 100x/100
75.442=x

75.442 is 67% of 112.6

6 0

4 years ago

Read 2 more answers