what is the answer?​

Answer:

r = -189

Step-by-step explanation:

Let's make it easy,

-13=r/9+8

r/9 = -13-8

r/9 = -21

r = -21 × 9

r = -189

Answer: 3

Step-by-step explanation: 9^1/2 = 3

Answer:

3

Step-by-step explanation:

using the rule of exponents/ radicals

[tex]a^{\frac{1}{2} }[/tex] = [tex]\sqrt{a}[/tex] , then

[tex]9^{\frac{1}{2} }[/tex] = [tex]\sqrt{9}[/tex] = 3

Answer: 30

Step-by-step explanation: PEMDAS

Answer:

30

Step-by-step explanation:

pemdas:

10 / (3+2) * 4 + 5^2 + 6 - 9

= (10 / 5)*4 + (25) - 3

= 8 + 22

= 30

Answer:

I am positive the answer is A

Step-by-step explanation:

Since it needs 12.50 per hour and h is per hour it would be 12.50h + S which is what A says

Answer: 0.5 to 35

Step-by-step explanation:

Answer:

It would drop the grade down to about a B- or C+

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

3

The answer is 3 because it is the opposite of negative 3

Answer:

4c^2 - 3a^2 -7ac +6bc -ab

Step-by-step explanation:

solve first 3a( a + b + c) - 2b ( a+ b +c)

which is = 3a^2 + 3ab + 3ac - 2ab - 2b^2 -2bc

there for 4c(-a + b +c) -( 3a^2 + 3ab + 3ac - 2ab - 2b^2 - 2bc)

= -4ac-3ac +4bc+2bc -3ab+2ab + 4c^2 -3a^2

=4c^2 - 3a^2 -7ac +6bc -ab

Answer:

D, I think, pls don't report if im wrong

Step-by-step explanation:

Answer:

D,

Step-by-step explanation:

D would be the only one that doesn't represent a function because the y-value never changes while the x-value does.

Answer:

B: 30°, 78°, 72

Step-by-step explanation:

Given a [tex]\triangle ABC[/tex].

Let [tex]\angle A = x^\circ[/tex]

As per question statement, [tex]\angle B[/tex] is 18° more than twice of [tex]\angle A[/tex].

i.e

[tex]\angle B =(2x+18)^\circ[/tex]

[tex]\angle C[/tex] is 42° more than that of [tex]\angle A[/tex]

[tex]\angle C = (x+42)^\circ[/tex]

To find:

The angle measures of the triangle = ?

Solution:

We can use the angle sum property of a triangle here to find the three angles of the triangle.

As per angle sum property, the sum of all the three internal angles is equal to [tex]180^\circ[/tex].

[tex]\angle A + \angle B + \angle C= 180^\circ\\\Rightarrow x+2x+18+x+42=180^\circ\\\Rightarrow 4x+60=180\\\Rightarrow 4x=120\\\Rightarrow x= 30^\circ[/tex]

i.e. [tex]\angle A = 30^\circ[/tex]

[tex]\angle B = 2\times 30 + 18 = 78^\circ[/tex]

[tex]\angle C = 30+42 = 72^\circ[/tex]

Therefore, the correct answer is:

B: 30°, 78°, 72

Answer:

The answer is c

Step-by-step explanation:im doing math exam and got it right simple ;)

Answer:

15

Step-by-step explanation:

Here, given the diagonals of the Rhombus, we want to get the length of one side of the Rhombus

We proceed to use the formula below;

d1 = √(4a^2-d2^2

Where d1 represents the length of one diagonal

a is the side of the Rhombus

d2 is the length of the second diagonal

Thus, mathematically;

d2^2 = 4a^2 - d1^2

4a^2 = d2^2 + d1^2

4a^2 = 18^2 + 24^2

4a^2 = 900

a^2 = 900/4

a^2 = 225

a = √225

a = 15

Answer:

(3,4)

Step-by-step explanation:

Find equations of both lines

Line 1: y = 1/3x + 3

Line 2: y = 2x - 2

Set then equal to each other, then solve for x:

1/3x + 3 = 2x - 2

1/3x + 5 = 2x

x + 15 = 6x

15 = 5x

x = 3

Then sub x into one of the equations (doesn't matter which one) and solve for y

y = 2x - 2

y = 2(3) - 2

y = 6 - 2

y = 4

Solution is (3,4)

OR EVEN BETTER!! JUST LOOK AT THE GRAPH AND SEE WHERE THE TOUCH AND LOOK AT THE NUMBERS!! YAY, YOU DID IT!!

Answer:

(3,4)

just put 3,4 is the equation

Answer:

It is the first one

Step-by-step explanation:

Answer:

13. Slope: -3

14. D ; y = 18

15. ?

Step-by-step explanation:

13. 4 - 1 = 3

-3 - 6 = -9

3/-9 = -3

Answer:

18 questions

Step-by-step explanation:

In order to get the answer you have to multiply 3/4 by 24.

(3/4)(24) = 18

Therefore, Tomas got 18 questions correct.

I hope this helps!!

- Kay :)

Answer:

he got 210 dollars in interest

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer: [tex]\sqrt{170}[/tex]

Step-by-step explanation:

Distance formula: a^2+b^2=c^2 where c is the distance between two points

(-6-5)^2 + (4-(-3))^2=c^2

(-(6+5))^2 + (4+3)^2=c^2

(-11)^2 + 7^2=c^2

121 + 49=c^2

c^2=170

c=[tex]\sqrt{170}[/tex]   ==> distance between A and B

Answer:

11.7 ft (11.661903789691 )

Step-by-step explanation:

Draw a right triangle. Legs are 10 ft and 6 ft, we're trying to find the hypotenuse.

We can use the Pythagorean theorem.

a^2 + b^2 = c^2

c = √a2 + √b2

  =  √(10)2 + √(6)2

  = √100 + √36

  = √136

  = 11.661903789691  

The fewest number of points that must be plotted to have examples of all four sets of numbers is including at least one positive and one negative​ integer is 2 points

The  Numbers are generally classified into 2 main groups - Rational numbers and Irrational numbers.

All the four examples listed here are types of rational numbers only.

Now, positive integers are also called  as whole numbers and natural numbers. So, one point is enough to represent whole numbers and natural numbers.

Also, another point will be required to show integers because integers can be positive and negative and  could include fractions.

Hence, The  fewest number of points we  must plot to have examples of all four sets of numbers given are 2 points.

As we know that positive integers are types of rational numbers and  positive integers are also natural numbers and whole numbers. Therefore all the options given, are positive integers.

The correct question is What is the fewest number of points you must plot in order to have examples of all four sets of​ numbers, including at least one positive and one negative​ integer? Explain.

To which sets do positive integers​ belong?

1. Integers

2.Rational Numbers

3.Natural Numbers

4. Whole numbers

Select all that apply.

To know more about Rational numbers - https://brainly.com/question/24398433

#SPJ9

Answer:

In this case the slope of a line perpendicular to the line whose equation is 12x+2y=-12 will be [tex]\frac{1}{6}[/tex]

Step-by-step explanation:

A line has the form:

y = m * x + b

where:

In this case, the line has the form 12*x+2*y=-12

First, you must isolate the variable "y", in order to arrive at the form of the line detailed above:

12*x+2*y=-12

2*y= -12 -12*x

y= (-12 -12*x)÷2

y= (-12)÷2 -(12÷2)*x

y= -6 -6*x

In this case: the slope is -6 and the Y-intercept is -6.

Two lines are perpendicular when they form four equal 90º angles. For two lines to be perpendicular, they must have their slopes inverse and changed sign.

Then, in this case the slope of a line perpendicular to the line whose equation is 12x+2y=-12 will be [tex]\frac{1}{6}[/tex]

The airplane that descends at a rate of 2,700 feet per minute, after 3 1/2 minutes it will be at 9450 ft

The formula and procedure we will use to solve this problem is:

v= x/t

Where:

Information about the problem:

Converting the mixed fraction to a fraction, we get:

3 1/2 =

[(3*2) + 1]/2 =

(6+1) / 2 =

7/2

3 1/2 min is equivalent to 7/2

Applying the velocity and isolating the distance we have:

x= v*t

x = 2700 ft/min * 7/2 min

x = 9450 ft

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

Learn more about velocity at: brainly.com/question/3004254

#SPJ4

Answer:

age to for the pooiiinntss

Answer:

.................................................................................................

Answer:

its c

Step-by-step explanation:

Answer:

3×6=

68

56

46

78

56

87

986786