PLEASE HELP ASAP 20 POINTS

Answer:

-9.7 + 18.6

Step-by-step explanation:

Given the expression:

-9.7 - (-18,6)

The additive inverse of -18.6 is 18.6

The product of teo negative sign will also give a positive sign, hence:

-9.7 - (-18,6) = -9.7 + 18,6

-9.7 + 18,6 = 18.6 - 9.7

18.6 - 9.7 = 8.9

Hence the expression can also be written as -9.7 + 18.6 with 8.9 being the solution

Answer:

14%

Step-by-step explanation:

42 ÷ 300 = 0.14 = 14%

or

subtract 42 from 300 which gives you 258

258 is 86% of 300

86-100 is 14 so 14%

Answer:

A

Step-by-step explanation:

(4+5)7=9*7=63

Answer:

its A

Step-by-step explanation:

4 pages in the morning and u have 7 days in a week so you do 4x7=28

5 pages eveaning same thing 5x7=33

35+28=63 letter A  

Answer: y= - 19/6+x/6

Step-by-step explanation: maybe

9514 1404 393

Answer:

  D.  52 ÷ 3 =17, with a remainder of 1

Step-by-step explanation:

There are only two answer choices that make a true statement: A and D. Of these, comparison with the diagram shows that you're looking for a statement where 17 and a remainder of 1 are involved. That's choice D.

Answer:

28

Step-by-step explanation:

Answer:

Step-by-step explanation:

28

Answer:

6 cells

Step-by-step explanation:

Cell A = 1 hour to complete cycle and produce 2 cells

Number of cycles completed on 6 hours = 6 cycles

Number of cell produced = 2 * number of completed cycles = 2 * 6 = 12 cells

Cell B = 2 hours to complete a cycle ; 2 cells produced per cycle

Number of cells produced after 6 hours :

Number of cycles in 6 hours = 6/2 = 3 cycles

Number of cells produced = 3 * 2 = 6 cells

Difference in cells produced : (12 - 6) = 6 cells

Answer:

[tex]( - 2) ^{4} \times ( - 3) ^{7} \\ = 16 \times 27 \\ = positive[/tex]

Answer:

[tex] \huge\boxed{d. \: 18a {b}^{3} \: and \: 16 {a}^{3} b}[/tex]

is the unlike pair terms.

A) 5x + 4y = 120

3x + 5y = 98

B) To solve this, we must solve the equation.

5x + 4y = 120

3x + 5y = 98

STEP ONE:

Divide

x + 4/5y = 24

STEP TWO:

Substitute the variable

x = 24 - 4/5y

STEP THREE:

Substitute the value of the variable

3(24 - 4/5y) + 5y = 98

STEP FOUR:

Multiply

72 - 12/5y + 5y = 98

STEP FIVE:

Subtract 72 from both sides

-12/5y + 5y = 26

STEP SIX:

Add

Turn 5y into 25/5y

-12/5y + 25/5y = 26

13/5y = 26

2.6y = 26

STEP SIX:

Divide 2.6 from both sides

26/2.6 = 10

y = 10

Each Hip-Hop CD Costs $10

(We will save this for later, because the question asked about rock CDs.)

STEP SEVEN:

Find x

x = 24 - 4/5(10)

4/5 = 0.8

0.8(10) = 8

x = 24 - 8

x = 16

Therefore, each Rock CD costed $16.

C) We found this earlier, each Hip-Hop CD costs $10.

Sorry this was a little lengthy, but I hope this helped!

Answer:

9

Step-by-step explanation:

The length of the paper , x, can be obtained using Pythagoras :

Width = 12 ; length = 15

x² = 15² - 12²

x² = 225 - 144

x² = 81

x = sqrt(81)

x = 9

Hence, length of the paper = 9 inches

Answer:

The simplest form of 42/18 is 7/3 or 2 1/3

Step-by-step explanation:

Answer:

7/3 or 2 and 1/3

Step-by-step explanation:

So first you have to find what is GCF of 42 and 18, which is 6 so divide 42 and 18 by 6 and you get 7/3 which is your simplified fraction but you can make this into a mixed number which would be 2 and 1/3

Answer:

y=-4x-8

Step-by-step explanation:

use points (0,-8) and (-2,0) and plug into slope formula.

slope formula=(y2-y1)/(x2-x1)

(0-(-8))/(-2-0)=-4

you get y=4x+b

use point (-2,0) to find b

you get y=-4x-8

Answer: 3x square route of 3

Step-by-step explanation:

In the case when the sin B=0.5 in the triangle so the expression for AB is to be considered as the [tex]3x^3[/tex].

Since it is mentioned that sin B=0.5

And, AC = 3x

So AB be like [tex]3x^3[/tex]

hence, In the case when the sin B=0.5 in the triangle so the expression for AB is to be considered as the [tex]3x^3[/tex].

Learn more about triangle here: https://brainly.com/question/24891826

Answer:

y² = 9² + 19² - 2(9)(19)Cos (41°)

Step-by-step explanation:

Triangle X Y Z is shown.

The length of X Y is 9,

the length of Y Z is 19, and the length of X Z is y. Angle X Y Z is 41 degrees.

Law of cosines is given as:a²= b² + c² – 2bccos(A)

Applying this to Triangle XYZ, and since we are Solving for y

y² = x² + z² - 2xzCos Y

The length of X Y = x is 9,

the length of Y Z = y is 19

y²= 9² + 19² - 2(9 × 19)Cos (41°)

= y² = 9² + 19² - 2(9)(19)Cos (41°)

Option d is correct

Answer:

Choice D is correct

Step-by-step explanation:

Just took the test

Answer:

Electric force = 8.20x10⁻⁸ N

Gravitational force = 3.61x10⁻⁴⁷ N

Step-by-step explanation:

1. The electric force can be found using the following equation:

[tex] F_{e} = \frac{Kq_{e}q_{p}}{d^{2}} [/tex]

Where:

K: is the Coulomb's constant = 9x10⁹ N.m²/C²      

[tex]q_{p}[/tex]: is the charge of the proton = 1.6x10⁻¹⁹ C

[tex]q_{e}[/tex]: is the charge of the electron = -1.6x10⁻¹⁹ C

d: is the distance = 5.3x10⁻¹¹ m

Hence, the magnitude of the electric force is:

[tex] |F_{e}| = \frac{9\cdot 10^{9} N.m^{2}/C^{2}*(-1.6\cdot 10^{-19} C)*1.6 \cdot 10^{-19} C}{(5.3 \cdot 10^{-11} m)^{2}} = 8.20 \cdot 10^{-8} N [/tex]                

2. The gravitational force can be calculated as follows:

[tex] F_{g} = \frac{Gm_{e}m_{p}}{d^{2}} [/tex]

Where:

[tex]m_{e}[/tex]: is the electron's mass = 9.1x10⁻³¹ kg

[tex]m_{p}[/tex]: is the proton's mass = 1.67x10⁻²⁷ kg

G: is the gravitational constant = 6.67x10⁻¹¹ N.m²/kg²

Therefore, the gravitational force is:

[tex] F_{g} = \frac{6.67 \cdot 10^{-11} N.m^{2}/kg^{2}*9.1 \cdot 10^{-31} kg*1.67 \cdot 10^{-27} kg}{(5.3 \cdot 10^{-11} m)^{2}} = 3.61 \cdot 10^{-47} N [/tex]

As we can see, the gravitational force is much less than the electric force.

I hope it helps you!                                                      

Answer:

57/514 is the correct answer

Step-by-step explanation:

Probability of choosing number less than 4 from number 1 to 10 is equals to [tex]\frac{3}{10}[/tex].

" Probability is defined as the mathematical statement which represents the ratio of number of favourable outcomes to the total number of outcomes."

Formula used

Probability = [tex]\frac{Number of favourable outcomes }{Total number of outcomes}[/tex]

According to the question,

Given ,

Numbers from which Stacia randomly chooses a number = 1 to 10

                                                                                                 = { 1, 2, ..., 10}

Condition for choosing a number = less than 4

                                                        = {1, 2, 3}

Substitute the value in the formula of probability we get,

Probability of choosing a number less than 4 = [tex]\frac{3}{10}[/tex]

Hence, Option(C) is the correct answer.

Learn more about probability here

https://brainly.com/question/11234923

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Answer:

(x-8)(x+7) in which x = 8, -7 (if needed)

Step-by-step explanation:

Figure out first what two numbers can go to 56.  The possible combinations are 1 and 56, 2 and 28, 4 and 14, and 7 and 8.  The middle number has to equal the sum of -1.  Therefore, 7 and 8 will go to that sum with -8 as one and +7 as another.  Your factor should be (x - 8) (x + 7) and when you are finding for the x-values, it should be 8 and -7 when necessary.  

Answer:

72.5

Step-by-step explanation:

70=-2.5x

+2.5 +2.5

x =72.5

Answer:

-28 for x

Step-by-step explanation:

the equation is supposed to be multiplied but you have to find x first so i think you have to divide 70 and -2.5 to find x then check your work by multiplying -2.5 and the answer which is -28 to get 70.

Answer:

y = -3x + 4

Step-by-step explanation:

y = -3x - 1

a parallel line is going to look identical to the previous equation except for the last number.

for example,

y = -3x + 10

and

y = -3x - 2

are both parallel lines

now, substitute y and x for the points of the coordinate given.

y = -3x - 1

-8 = -3*4 - 1

-8 = -12 - 1

this equation isn't true.

so change the last number to make it true

-8 = -12 + 4

-8 = -8

so, your new equation is

y = -3x + 4

Answer:

The answer is 4.6.

Step-by-step explanation:

If you look at the graph closely, you would see that the intersection is very close to 4, so the answer is 4.6.

Answer:

25m

Step-by-step explanation:

Answer:

the magnitude of a real number without regard to its sign.

Step-by-step explanation:

Answer:

the magnitude of a real number without regard to its sign

Step-by-step explanation: or something like that