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3 years ago

Laura has a toy robot collection 4/7 of her robots makes noise how many of lauras robots make noise?

Mathematics

1 answer:

sleet_krkn [62]3 years ago

3 0

Answer:

16 robots make noise

Step-by-step explanation:

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What is the reciprocal of the number 2/7 ?

Helga [31]

Reciprocal just means flipping a fraction by swapping the place of the numerator and denominator.
Switching 2 and 7 would change it to 7 over 2.
Simplifying 7/2 would result in 3 and 1/2.
So the answer is D. 3 1/2.

6 0

2 years ago

Last question. 50 points!

Shkiper50 [21]

w=-1.5

w=2

Answer:

Solution given:

$\sqrt{2w²-19w+31}+2=7-2w$

again

keep square root alone

$\sqrt{2w²-19w+31}=7-2w-2$

solve subtraction of 7-2

$\sqrt{2w²-19w+31}=5-2w$

Squaring on both side

$(\sqrt{2w²-19w+31})²=(5-2w)²$

2w²-19w+31=5²-2*5*2w+4w²

take terms one side

2w²-19w+31-25+20w-4w²=0

-2w²+w+6=0

2w²-w-6=0

doing middle term factorisation

2w²-(4-3)w-6=0

2w²-4w+3w-6=0

take common from each two term

2w(w-2)+3(w-2)=0

(w-2)(2w+3)=0

either

w=2

W=-3/2=-1.5

3 0

2 years ago

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The time t required to do a job varies inversely with the number of people p who work on the job. If it takes 3 hours for 16 peo

Anna71 [15]

Let the hall be A=1. For 3 hours 16 people can decorate the hall. Then P1=A\(t1.number people1) P=1/48. That is for 1 person. You have 24 people to decorate the same hall. Their P2 will be (1/48).24=1/2. t2=A/P2=2 hours

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3 years ago

Estado tratando esto por mucho tiempo

maksim [4K]

Answer:

1/2

Step-by-step explanation:

Paso Uno: $\frac{5}{1}* \frac{5}{1} *\frac{5}{1}* \frac{5}{1} *\frac{5}{1}$ * 1/10= 5/10

Paso Dos: Simplificar:

5/5=1

10/5=2

Paso Tres: fracción es 1/2

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3 years ago

What should you do first to write 5.871 x 10‐⁷ in standard form?

notka56 [123]

Answer:

0.000005871

thats just what it is cuz yeah

8 0

3 years ago

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