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marshall27 [118]

4 years ago

7

You estimate that a jar contains 68 marbles. The actual number is 60. Find the percent error. Round your answer to the nearest t

enth.

1 answer:

Alexandra [31]4 years ago

7 0

Normally I'd put 0.1176 but since it's to the nearest tenth it is .1

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Sean had 3 building sets and 18 toy cars in his toy box. At his birthday party, he received 20 gifts. He got 3 train sets, 4 bui

Ganezh [65]

Answer:

1.3/20 2.4/20 or 1/5 3.9/27 or 1/3

Step-by-step explanation:

I hope this helped!

5 0

3 years ago

Find the value of x. If necessary, write your answer in simplest radical form.<br> 12

Murrr4er [49]

Answer:

<h2><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>13</u></em></h2>

Step-by-step explanation:

<em><u>According</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>Pythagoras</u></em><em><u> </u></em><em><u>Theorem</u></em><em><u>, </u></em>

${(height)}^{2} + {(base)}^{2} = {(hypotenuse)}^{2}$

$= > {12}^{2} + {5}^{2} = {x}^{2}$

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$= > {x}^{2} = 169$

$= > x = \sqrt{169}$

=> <em><u>x = 13 (Ans)</u></em>

7 0

3 years ago

Read 2 more answers

(3rd time Asking) Please help me with these questions!!!

poizon [28]

(a) Water balloon 1 has height at time $t$

$h_1(t)=-16t^2-20t+110$

and water balloon 2 has height

$h_2(t)=-16t^2+75$

Both water balloons are moving straight downward, so their distance is equal to

$|h_1(t)-h_2(t)|=|(-16t^2-20t+110)-(-16t^2+65)|=|35-20t|$

(b) When both water balloons are at the same height, we have $h_1(t)=h_2(t)$ . So you could set both quadratic expressions equal to each other and solve for $t$ . Or you can use the fact that, when they're at the same height, the distance between them is 0. So using the expression from part (a), we have

$|35-20t|=0\implies 35-20t=0\implies 35=20t\implies t=\dfrac{35}{20}$

or 1.75 seconds after being thrown/dropped.

At this time, they are both at a height of $h_1(1.75)=h_2(1.75)$ :

$h_2(1.75)=-16(2.25)^2+75=26$

feet.

(c) The second and fourth statements are true.

4 0

4 years ago

--3 x 2 x a + 5(-7b) + (12 x c x 4)

defon

Answer:

and 4 easy

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Step-by-step explanation:

3 0

3 years ago

Use the distributive property to write an equivalent expression.<br> 3(t+2v)

Mila [183]

Answer: 3t + 6v

Proof: Math.

3 0

3 years ago