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mixas84 [53]
2 years ago
12

Select all numbers that are prime. 10 16 20 25 23

Mathematics
2 answers:
ira [324]2 years ago
7 0

Answer:

23 is the only prime number.

Step-by-step explanation:  A prime number can only be divided by 1 and itself, while composite can be divided by more then 2 numbers.

creativ13 [48]2 years ago
3 0

Answer:

Only 23

Step-by-step explanation:

Prime numbers are numbers that cant be divided evenly

10 can be 5 and 2

16 can be 4 and 4

20 can be 4 and 5

25 can be 5 and 5

but there is even number for 23

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Si -x+y+z=75, entonces -(x+3)+(y-5)+(z-6)=
jenyasd209 [6]

Answer:

67

Step-by-step explanation:

● -(x + 3) + (y - 5) + (z - 6)

● -x - 3 + y - 5 + z - 6

● (-x + y + z) + (3 -5 -6)

● 75 + 3 - 11

● 78 - 11

● 67

8 0
3 years ago
Plz help me because I don’t no it<br><br> 2345 ➗ 550
babymother [125]

Answer:

4.26363636364 or this fraction 4 and 6590909090/25000000000

Step-by-step explanation:

5 0
3 years ago
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F(×)=3×/2+× find f(-4)​
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Answer:

f(x)=6

Step-by-step explanation:

3(-4)/2+(-4)

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4 0
2 years ago
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A block of copper weighs 2160g and has a volume of 240cm cubed. what is the density of the copper?
mrs_skeptik [129]
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3 0
3 years ago
It will take Adam four hours to drive to Disney Park, and 2.5 times less time if driving 45 mph faster. What is the distance Ada
Mashcka [7]
<h2>Hello!</h2>

The answer is:

The distance to over by Adam to get to the park is 108 miles.

<h2>Why?</h2>

To solve the problem, we need to write two equations using he given information about the times and his speed.

So,

For the first equation we have: Travel to Disney Park

time=4hours

Distance=v*4hours

For the second equation we have: Travel back from Disnery Park

time=4hours-2.5hours=1.5hours

Speed=v+45mph

Distance=(v+45mph)*1.5hours

Then, if Adam covered the same distance going and coming back, we have:

v*4hours=(v+45mph)*1.5hours

v*4hours=v*1.5hours+45mph*1.5hours

v*4hours-v*1.5hours=45mph*1.5hours

v*2.5hours=67.5miles

v=\frac{67.5miles}{2.5hours}=27\frac{miles}{hour}=27mph

We have that the speed when he was going to Disney Park was 27 mph.

Now, to calculate the distance, we need to substitute the obtained speed in any of the two first equations.

Therefore, substituting the speed into the second equation, we have:

Distance=(v+45mph)*1.5hours

Distance=(27mph+45mph)*1.5hours=72mph*1.5hours=108miles

Hence, we have that the distance that Adam should cover to get to the park is 108 miles.

Havea nice day!

8 0
3 years ago
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