31 in the form 2n -1

Answer:

x=-5

Step-by-step explanation:

Answer:

83.3...

Step-by-step explanation:

50x5/5=250/3

x=83.3

Isaac can swim 83.3 per minute.

It is required to find how far Isaac swim per minute.

The branch of mathematics dealing with the properties and manipulation of numbers. a science that deals with the addition, subtraction, multiplication, and division of numbers. Fractions, decimals, percentages, fractions, square root, exponents, and other arithmetic operations are used to achieve mathematical simplifications.

Given:

Isaac swims across a 50-meter pool in 3/5 of a minute.

According to question we have

50-meter = 3/5 of a minute

50x5/3meter= 1 minute

=250/3 meter/minute

=83.3meter/minute

Therefore,  Isaac can swim 83.3 per minute.

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Answer:

0.0

Step-by-step explanation:

Answer:

6535

Step-by-step explanation:

collect your own thinikng

Answer:

1. 120

2. 120

3. 132

4. 600

Answer:

A. (x+5) / (x+10)

Step-by-step explanation:

______

Answer:

A system of linear equations will have exactly one point of intersection, for example:

2x+y=5

-x+y=2

However, a system of linear equations with no solution will have no points of intersection, for example:

-4x+10y=6

2x-5y=3

Sorry about c. though I'm confused on how a pair of equations can have infinite points of intersection unless x or y equals all real numbers which could happen if x or y both equaled all real numbers maybe

And the point of interesection for the system of equations in the problem you attached as an image is (2,-1)

I attached a photo below, and one of how to graph it

9514 1404 393

Answer:

  102 11/12 km ≈ 102.917 km

  102,916 2/3 m ≈ 102,917 m

Step-by-step explanation:

1 minute is 1/60 of an hour, so 95 minutes is 95/60 hours = 19/12 hours.

Distance is the product of speed and time, so ...

  distance = (65 km/h)(19/12 h) = 1235/12 km = 102 11/12 km ≈ 102.917 km

__

Each kilometer is 1000 meters, so this distance is ...

  (102.917 km) × (1000 m/km) = 102,917 m

Answer:

40 degrees

Step-by-step explanation:

Angles in a triangle add to 180 so

100+40+2x=180

140+2x=180

2x=40

x=20

2x=2(20)=40

Answer:

-1 to 3

Step-by-step explanation:

When the function is constant, it'll be a horizontal straight line. On the graph of the line where there are no increases or decreases begins at -1 and ends at 3.

============================================================

Explanation:

He sold $4950 worth of items. Take 12% of this amount to get

12% of 4950 = 0.12*4950 = 594

So he earns $594 in commission on top of the $350 base salary paid every week. In total, he earns 594+350 = 944 dollars for that week

This isn't the per week pay because he would need to sell exactly $4950 worth of goods each week to keep this same weekly pay.

Answer:

Step-by-step explanation:

no ,x*x*x*x*x=x^5

x+x+x+x+x=5x

in multiplication those who have same base we add their power.

in addition those variables which have same base(or are like term) we add them.

Answer:

x=8

Step-by-step explanation:

firstly take 30+18 which equals 48 and then divide that by six which will give you 8 as your answer

Which equation represents the solution of the equation 6x - 18 = 30?

B. x = 8

Answer:

2/13

Step-by-step explanation:

For a deck of card

Total cards = 52

Total spade = 4

Total diamond = 4

pr(drawing a spade) = number of spade/total cards

pr(drawing a spade) = 4/52 = 1/13

pr(drawing a diamond)  = 4/52 = 1/13

Pr(diamond or a spade) = 1/13 + 1/13 = 2/13

Answer:

ok first we have to add the number of lollipops up

9+13+5+11+7+15=60

so there is 60 lollipops in total

now we have to add up the ones with out a chocolates center

11+7+15=33

so 33/60

we can simplify this

11/20

now we multiply both by 5

55/100

so 55%

Hope This Helps!!!

The correct answer is option A which is the probability of not having a chocolate center is 55%.

Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.

The given data is:-

9+13+5+11+7+15=60

So there are 60 lollipops in total, now we have to add up the ones without a chocolate center.

The probability will be calculated as:-

11+7+15=33

P =33/60

P = 11 / 20

Now we multiply both by 5

P = 55/100

Therefore the correct answer is option A which is the probability of not having a chocolate center is 55%.

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Answer:

Step-by-step explanation:

Only (a) sum of angles 1 and 2 = 180°  is true.

Answer:

a is the best answer

Step-by-step explanation:

mz1+m22=180°

Step-by-step explanation:

go to school do math then you'll figure out

Answer:

x= 0    x=4

Step-by-step explanation:

2x^2=8x

Subtract 8x from each side

2x^2   -8x=8x-8x

2x^2 - 8x =0

Factor 2x

2x( x-4) =0

Using the zero product property

2x =0   x-4 =0

x= 0    x=4

Answer:

(0,4)

Step-by-step explanation:

Divide both sides of the equation by 2

x^2=4x

Move the variable to the left-hand side and change it's sign

x^2-4x=0

Factor out x from the expression

xx(x-4)=0

Separate into possible cases. )When the product of factors equals 0, at least one factor is 0)

x=0

x-4=0

solve the equation for x

x=0

x=4

The equation has 2 solutions

Answer:

3

Step-by-step explanation:

jade owl had 3 more extra than queen bee

Answer:

30

Step-by-step explanation:

one book symbol is 10 books, there's 3 for jade and 6 for queen. 60-30

Answer:

d.18

Step-by-step explanation:

as x goes up by 1, y goes up 18

Answer:

120 degrees

Step-by-step explanation:

a straight line is 180 degrees, so 180-60

Answer:

c. 250

Step-by-step explanation:

Answer:

32

Step-by-step explanation:

p=8/1/4

p=8÷¼

p=8×4

p=32

hope this helps

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Answer:

my answer is A. you only need substitute n from 1 to 4

Answer: 1/4

Step-by-step explanation:

Answer:

(a) Because the expression is not an equation

(b) Because the expression is an equation

Step-by-step explanation:

Solving (a): a + 2

The above expression can assume any value for a because it is not an equation.

Take for instance:

a = 2;

[tex]a + 2 \to 2 + 2 = 4[/tex]

[tex]a =-4[/tex]

[tex]a + 2 \to -4 + 2 = -2[/tex]

The reason for this is because the expression is not an equation

Solving (b): [tex]b + 2 = 5[/tex]

The above expression can assume only value for b, and the value is:

[tex]b + 2 = 5[/tex]

[tex]b = 5-2[/tex]

[tex]b =3[/tex]

This means that only [tex]b =3[/tex] will make the equation true.

The reason for this is because the expression is an equation

Answer:

A) 0.0107

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 440 seconds and a standard deviation of 40 seconds.

This means that [tex]\mu = 440, \sigma = 40[/tex]

Find the probability that a randomly selected boy in secondary school can run the mile in less than 348 seconds.

This is the p-value of Z when X = 348. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{348 - 440}{40}[/tex]

[tex]Z = -2.3[/tex]

[tex]Z = -2.3[/tex] has a p-value of 0.0107, and thus, the correct answer is given by option A.