All categories

3 years ago

What is the greatest prime you must consider to test whether 1471 is prime?

Mathematics

1 answer:

a_sh-v [17]3 years ago

8 0

Answer:

1471

Step-by-step explanation:

First we have to check if it is divisible with the first 15 prime numbers

1471÷2=735.5(not divisible)

1471÷3=490.33( not divisible)

1471÷5=294.2( not divisible)

1471÷7=210.14(not divisible)

1471÷11=133.73(not divisible)

1471÷13=113.15(not divisible )

1471÷17=86.53(not divisible )

1471÷19=77.42(not divisible )

1471÷23=63.96(not divisible )

1471÷29=50.72(not divisible )

1471÷31=47.45(not divisible )

1471÷37=39.76(not divisible )

1471÷41=35.88(not divisible )

1471÷43=34.20(not divisible )

1471÷47=31.39(not divisible )

1471÷53=27.75

1471÷61=24.11

1471÷67=21.85 ......

You might be interested in

1 of every 20 cookies falls apart. if you make 40 cookies how many will fall apart? 5 1 3 2

Likurg_2 [28]

2 is the answer. .........

3 0

3 years ago

Each of the walls in Harvey’s shed are square and have an area of 84 square feet. What is the approximate height, to the nearest

Snowcat [4.5K]

Answer:

9 ft

Step-by-step explanation:

Here, we have a square wall with a value of 84 square feet for the area and we are told to find the approximate height of the walls

Mathematically, the area of a square is L^2

The height of the walls is just as one of its side

Thus;

L^2 = 84

L = √(84)

L = 9.165

which to the nearest foot is 9 ft

6 0

3 years ago

A delivery truck traveled 324 miles on 18 gallons of gas. How far can be traveled on 41 gallons of gas?

bekas [8.4K]

Set up the equation:
324 = x 
18 41

(324 * 41)/18 = 738 miles

6 0

3 years ago

Given: PQ ⊥ QR , PR=20, SR=11, QS=5 Find: The value of PS.

dlinn [17]

Answer:

The value of the side PS is 26 approx.

Step-by-step explanation:

In this question we have two right triangles. Triangle PQR and Triangle PQS.

Where S is some point on the line segment QR.

Given:

PR = 20

SR = 11

QS = 5

We know that QR = QS + SR

QR = 11 + 5

QR = 16

Now triangle PQR has one unknown side PQ which in its base.

Finding PQ:

Using Pythagoras theorem for the right angled triangle PQR.

PR² = PQ² + QR²

PQ = √(PR² - QR²)

PQ = √(20²+16²)

PQ = √656

PQ = 4√41

Now for right angled triangle PQS, PS is unknown which is actually the hypotenuse of the right angled triangle.

Finding PS:

Using Pythagoras theorem, we have:

PS² = PQ² + QS²

PS² = 656 + 25

PS² = 681

PS = 26.09

PS = 26

7 0

3 years ago

If carlos did some work and got 3x + 2x - 6 = 24 what mistake did he make

Makovka662 [10]

Carlos made the mistake that he did not combine like terms (3 x and 2 x) properly and did not use addition property of equality.

Step-by-step explanation:

Carlos did the work as 3 x + 2 x - 6 = 24

We need to find his mistake that he made in above given.

Here, he did not add the like terms (3 x and 2 x)

3 x + 2 x = 5 x

Therefore, his work should be

5 x - 6 = 24

Also, he did not use addition property of equality. It means the equation remains same even though the same number gets added on both sides. It would be

5 x - 6 = 24

+ 6 = + 6

-----------------------

5 x = 30

Dividing 30 by 5, we get answer as '6'. Hence,

$x=\frac{30}{5}$ = 6

So, stated the above two are the mistakes found in carlos work.

4 0

3 years ago