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3 years ago

1 ten thousand+19thousands+2tens+9ones

Mathematics

1 answer:

sineoko [7]3 years ago

3 0

29,029 is the answer hope I helped! :)

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URGENT- I'll give 20 points

egoroff_w [7]

Answer:

i think its c

Step-by-step explanation:

so sorry if its wrong

3 0

2 years ago

Ana lee has 30 gum balls. If one sixth are green, and one third are red,are there

Andrew [12]

Red I know because the smaller the number the bigger the fraction

4 0

3 years ago

Jordan estimated that his paper airplane would fly 42 feet. It actually traveled 50 feet. What was the percent error?

topjm [15]

$\huge \mathcal{ Answer࿐}$

Error (e) = 50 - 42 = 8 feet

assumed value (a) = 42 feet

$\boxed{ \mathrm{ \% \: error = \dfrac{error}{assumed \: value} \times 100}}$

$\mathrm{ \% \: error =\dfrac{8}{42}} \times 100$

$\mathrm{ \% \: error = \dfrac{800}{42} }$

$\mathrm{ \% \: error = 19.04 \%}$

_____________________________

$\mathrm{ \#TeeNForeveR}$

6 0

2 years ago

a satellite's escape velocity is 6.5 mi/sec, the radius of the earth is 3960 mi, and the earth's gravitational constant is 32.2

Artyom0805 [142]

Answer:

$23.89x10^{6}$ ft

Step-by-step explanation:

$\frac{V^{2} }{R^{2} } = \frac{2g}{R+h} \\$ This is the formula to find satellite's escape velocity V , where R is earth's radius, h is the satellite's height from the earth surface and g is the earth's gravitational constant.

$R^{2}(R+h) \frac{V^{2} }{R^{2} } =R^{2} (R+h)\frac{2g}{R+h}$ (Multiplying to clear the fractions)

(R+h) $V^{2} =R^{2} 2g$

$R+h=\frac{2R^{2}g }{V^{2} }$

$h= \frac{2R^{2} g}{V^{2} } -R$

Now, we can determine height of satellite from the surface of the earth

by putting the values in above equation

$h= \frac{2 * (3960)^{2}*32.2 }{6.5^{2} } -3960\\h= 23.902 x10^{6} - 3960\\ h=23.89x10^{6} ft$

5 0

2 years ago

A doctor orders 20 grams of a 52% solution of a certain medicine. The pharmacist has only bottles of 40% solution and bottles of

Anvisha [2.4K]

Try, please, this:
1) Imagine, that pharmacist used 'x' gr. of 40% solution and 'y' of 70% solution.
Together (20 gr. of 52% sol.) it will be x+y=20.
2) From other side, the pharmacist combined 40x and 70y gramms, after obtaining together it is 52(x+y) gramms. In other words 40x+70y=52(x+y)
3)
$\left \{ {{x+y=20} \atop {40x+70y=52(x+y)}} \right. \ =\ \textgreater \ \ \left \{ {{y=8} \atop {x=12}} \right.$
Answer: 8 gr. of 70% solution and 12 gr. of 40%.

4 0

3 years ago

Read 2 more answers