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Alecsey [184]
4 years ago
13

Kai picked 7 times as many blueberry as Nico.together they picked 297

Mathematics
1 answer:
Helga [31]4 years ago
5 0

Answer:

Step-by-step explanation:

You need to specify what the goal of the problem is.

If Kai picked 7 times as many blueberries as Nico, then:

n + 7n + 297, or

8n = 297.  Unfortunately, 8 does not divide evenly into 297, and we certainly are not interested in picking fractional blueberries.

If the problem mentioned 296 instead of 297 total blueberries, then

Nico (n) picked 47 blueberries and Kai picked 7 times that many, or 329.

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3" is the difference in height.
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The graph at the right shows the race between Tristin, the tortoise, and Harlow, the hare. A)Express Tristin’s constant speed.
mafiozo [28]

Answer:

the answer (in my opinion) could be 82 feet per 6.5 minutes

Step-by-step explanation:

(id like to tell you the rest but i can't cause then it would be plagiarism. hope you understand)

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Which property of equality would be used to isolate the variable x in this equation? x – 8 = 14 A. addition property of equality
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There is a bag with only red marbles and blue marbles.
natulia [17]

Answer:

There must be 35 red marbles.

Step-by-step explanation:

This question can be solved using a rule of three.

A probability is the number of desired outcomes divided by the number of total outcomes.

The probability of randomly choosing a red marble is 7/9.

This means that for each set of 9 marbles, 7 must be red.

There are 45 marbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.

How many red marbles out of 45?

7 red - 9 marbles

x red - 45 marbles

9x = 45*7

Simplifying by 9

x = 5*7

x = 35

There must be 35 red marbles.

6 0
3 years ago
Two resistors, with resistances R1 and R2, are connected in series. R1 is normally distributed with mean 100 ohms and standard d
puteri [66]

Answer:

The probability that R2 is bigger than R1 is P=0.9633.

Step-by-step explanation:

We need to compute the probability that R2 is bigger than R1:

P(R_2>R_1)

To do this,  we define a new variable Das the difference between the two resistances:

D=R_2-R_1

Then,

P(R_2>R_1)=P(R_2-R_1>0)=P(D>0)

As R1 and R2 are normal random variables, the properties of D are:

\mu_D=\mu_{R2}-\mu_{R1}=120-100=20\\\\\sigma_D=\sqrt{\sigma_{R2}^2+\sigma_{R1}^2}=\sqrt{10^2+5^2}=\sqrt{100+25}=\sqrt{125}=11.18

Then, we can calculate the z-value for D=0

z=\frac{x-\mu}{\sigma} =\frac{0-20}{11.18}=\frac{-20}{11.18}=  -1.79

P(D>0)=P(z>-1.79)=0.9633

8 0
3 years ago
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