An atom of silicon is approximately 0.00000000025 meters wide. How do you express that number in scientific notation? O 25 10-10 meters O 2.5 × 10-11 meters O 2.5 1010 meters O 2.5 x 10-10 meters​

Answer:

B

Step-by-step explanation:

Answer:

125

Step-by-step explanation:

Answer:

$12

Step-by-step explanation:

$3.00 is 25%

what about 100%

3.00×100=300÷25= 12.00

Answer:

x = 7 / 2, y = - 5 / 2

Step-by-step explanation:

3x + y = 8 ------> equation 1

3 ( 3x + y = 8 )

9x + 3y = 24 ------> equation 2

x - 3y = 11 ------> equation 3

Add equations 2 & 3,

9x + 3y = 24

x - 3y = 11

_________

10x + 0 = 35

10x = 35

x = 35 / 10

x = 3.5

Substitute x = 3.5 in equation 1,

3x + y = 8

3 ( 3.5 ) + y = 8

10.5 + y = 8

y = 8 - 10.5

y = - 2.5

x = 3.5

= 35 / 10

x = 7 / 2

y = - 2.5

= - 25 / 10

y = - 5 / 2

Answer:

1/2

Step-by-step explanation:

Answer:

3. 100 + 100

5. 1000 + 310

7. 400 + 16

2. 300 + 24

ight that all I can do for you right now

Step-by-step explanation:

Answer: 5/12

Step-by-step explanation:

9/4 - 11/6

=

9/4 + -11/6

=

27/12 + -22/12

=

27 + −22/12

=

5/12

Answer:

5 – 6 (b + 1) = 5 + ( – 6 ) × b + (– 6) × 1 = 5 – 6b – 6 = – 6b – 1. Example 1: Simplify: 5(a – 4) + 3 = 8.

explanation: your welcome

Step-by-step explanation:

what do you mean ? you need to multiply this out ? or what is the problem ?

just to multiply this :

b(a-6) = ba - 6b

or with full symbols for operations

b×(a-6) = b×a - 6×b

Step-by-step explanation:

Statement. Reason

→ 9(x-6)+41 = 75. Transposing the like terms.

→ 9(x-6) = 75 - 41 Performing subtraction of the term in RHS

→ 9(x-6) = 34 Performing multiplication in LHS.

→ 9x - 54 = 34 Distributive property

→ 9x = 34 + 54 Performing addition of the term in RHS.

→ 9x = 88. Now, transpose 9 from LHS to RHS , it's arthmetic operator will get changed.

→ x = 88/9

Answer:

1. D

2. A

3. B

4.C

5. D

6. B

7. B

8.D

9. B

10. A

11. B

12. A

13. C

14. C

15. A

Answer:

-69

Step-by-step explanation:

40-100-9

Answer:

9

Step-by-step explanation:

Answer:

interior angles of a quadrilateral= 360° (angle sum property

90°+90°+x+(x-42)= 360°

× + (x-42) = 180°

2x = 222°

x = 111°

x - 42 = 69°

Answer:

16k with the little 2 by the k so like 16k2-4(2)(-5k)

Step-by-step explanation:

ANSWER IS -5/2<K<0.

The set of possible values for k is -4<k<-5/2.

The given equation 20x²=4kx-13kx²+2 and the inequality is 2k²+13k+20<0.

For a given quadratic equation ax² + bx + c = 0, the values of x that satisfy the equation are known as its roots. i.e., they are the values of the variable (x) which satisfies the equation. The roots of a quadratic function are the x-coordinates of the x-intercepts of the function.

The given equation has no real roots.

4kx-13kx²+2-20x²=0

⇒ 4kx-x²(13k+20)+2 = 0

If the discriminant of a quadratic function is less than zero, that function has no real roots.

Compare 4kx-x²(13k+20)+2=0 with ax² + bx + c = 0, we get a= - (13k+20), b=4k and c = 2.

So, b²-4ac<0

(4k)²-4(-(13k+20))(2)<0

⇒ 16k²+8(13k+20)<0

⇒ 8(2k²+13k+20)<0

⇒ 2k²+13k+20<0

Using splitting middle term method, we get

2k²+8k+5k+20<0

⇒ 2k(k+4)+5(k+4)<0

⇒ (k+4)(2k+5)<0

⇒ -4<k<-5/2

Therefore, the set of possible values for k is -4<k<-5/2.

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https://brainly.com/question/20383699.

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Answer:

12

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

When we differentiate this we will be having:

2m+8

therefore;

2(-3)+8

-6+8

= 2

Step-by-step explanation:

5) angle 5 = 69°

than, angle 10 = 69° ( alternate interior angle )

6) angle 6 = 115° ( alternate interior angle )

7) angle 7 = 118° ( alternate interior angle )

8) angle 11 = angle 4 - 180

→ 72 - 180 = 108°

therefore, angle 11 = 108°

9) angle 14 = 114° - 180

→ angle 14 = 66°

10) angle 12 = 86° ( alternate interior angle)

hope this answer helps you dear...take care!

Answer:

5. 69 degrees

6. 115 degrees

7. 118 degrees

8. 108 degrees

9. 66 degrees

10. 86 degrees

Step-by-step explanation:

Answer:

x= -2 —> y= 4

x = -1 —> y = 1

x = 0 —> y = – 4

x = 1 —> y = – 11

x = 2 —> y = – 20

I hope I helped you^_^

Answer:

3.25 + 5.50S is less than or equal to 30

Answer:

p:q=1/3:2=1:6=3:18

p:r=3/4:1/2=3:2

p:q:r=3:18:2

i hope its help to you ✌

Answer:

He is 5.6 km away

Step-by-step explanation:

he starts traveling away from base and is 8.3 km away to start with

then he turns west and travels 13.9 km away

what this mean is that you have to subtract the distance he turned from the distance he started off with

ex: 13.9 - 8.3 = 5.9

to get your answer of how far away he is from the base

Laura put $18 toward the present. Therefore, the correct answer is F. $18. Let's use variables to represent the amounts that Lilly and Laura contributed.

Let L be the amount Lilly contributed and 2/3L be the amount Laura contributed.

According to the information given:

L + 2/3L = $45

To solve for L, combine the terms with L:

1L + 2/3L = $45

To combine the fractions, find a common denominator:

(3/3)L + 2/3L = $45

Now, the fractions have a common denominator:

(5/3)L = $45

To isolate L, divide both sides by 5/3:

L = $45 / (5/3)

To divide by a fraction, multiply by its reciprocal:

L = $45 * (3/5)

L = $9 * 3

L = $27

So, Lilly contributed $27.

Now, to find how much Laura contributed:

Laura's contribution = 2/3L = 2/3 * $27 = $18

To know more about Laura:

https://brainly.com/question/15453751

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Step-by-step explanation:

a.= 6

c.=7

f.=3

i only know this

Answer:

1/10

Step-by-step explanation:

[tex]-\frac{1}{4} * -\frac{2}{5}\\\\= \frac{2}{20}\\\\=\frac{1}{10}[/tex]

Feel free to mark this as brainliest! :D

ANSWER:

[tex]60[/tex]

Answer: f(3)= 7, f(0)= -5, f(-2)= -13

Step-by-step explanation:

Substitute and plug in.

For f(3), we plug in 3 for x in the equation.

So, 4(3)-5, which is just 12-5, which is 7

We do the same for f(0),

4(0)-5, which is 0-5, which is -5

Once again for f(-2),

4(-2)-5, which is -8-5, which is -13

Hope this helps!

Answer:

Step-by-step explanation:

so go to the f g c and multiply my 6