evaluate 15x+9 when x=−1

Answer:

5

Step-by-step explanation:

Answer:

1 time

Step-by-step explanation:

Answer:

use the app called socratic

Step-by-step explanation:

Answer:

-2, 4, 6, 8

6, 4, 2 ,0

Answer:

y=3/4x-6

Step-by-step explanation:

u have to use the y2-y1/x2-x1 to fid the slope which is 3/4

then use slope intercept form which is y=mx+b to find if the equation has a y-intercept, plug in on point into the slope intercept form -12=3/4(-8)+b and u would get 6.

Answer:

No, Yes, Yes

Step-by-step explanation:

no yes yes

(gl on your test or whatever)

Answer:

My age is 38 years old

My son is 11 years old

Step-by-step explanation:

Represent my current age with x and my son's current age with y

Two years ago;

[tex]x - 2 = 4 * (y - 2)[/tex]

Eight years ago:

[tex]x - 8 = 10 * (y - 8)[/tex]

Simplify both expressions

[tex]x - 2 = 4 * (y - 2)[/tex]

[tex]x - 2 = 4y - 8[/tex]

Add 2 to both sides

[tex]x - 2 +2= 4y - 8 + 2[/tex]

[tex]x = 4y - 6[/tex]

Substitute 4y - 6 in the second equation

[tex]x - 8 = 10 * (y - 8)[/tex]

[tex]4y - 6 - 8 = 10 * (y - 8)[/tex]

[tex]4y - 14 = 10y - 80[/tex]

Collect Like Terms

[tex]4y - 10y = 14 - 80[/tex]

[tex]-6y = -66[/tex]

Divide through by -6

[tex]y = 11[/tex]

Substitute 11 for y in [tex]x = 4y - 6[/tex]

[tex]x = 4 * 11 - 6[/tex]

[tex]x = 44 - 6[/tex]

[tex]x = 38[/tex]

Answer:

v=30

Step-by-step explanation:

100/90 = 1.1

1.1 times 27 is 30

Answer:

V = 30

Step-by-step explanation:

[tex] \frac{27}{90} = \frac{v}{100} \\ \\ cross \: multiply \: \\ \\ \\ 27 \times 100 = 90 \times v \\ \\ 2700 = 90v \\ \\ 30 = v[/tex]

Answer:

Angle 2

Step-by-step explanation:

Suplementary - 2 angles which equal 180 degrees

Answer:

x=8

Step-by-step explanation:

x+x+x=24

3x=24

x=24÷3

x=8

Answer:

A. An exterior angle of a triangle can equal one of the interior angles of the triangle.

Step-by-step explanation:

The triangle can have more than one exterior angles that can be acute or obtuse angles since the triangles angles must sum to 180 degrees. The exterior angle of a triangle is equal to the sum of the interior angles of the triangle.

Answer:

-8

Step-by-step explanation:

lere

answer  97

Step-by-step explanation:

2x4 – 5x3 + 2x2 + 5x - 10

x - 2 = 97

Answer:

True

Step-by-step explanation:

3 • 1/3 = 1

~Turn the whole number into a fraction

3/1 * 1/3 = 1

~Multiply

3/3 = 1

~Simplify

1 = 1

Best of Luck!

Answer:

Sam has to get at least a 96 in order to pass the class with a B.

Step-by-step explanation:

To find this you use mean in this format:

Test Scores + x (Exam Grade Needed) / # of Tests ≥ 80 (Which Is a B)

Substitute:

82 + 70 + 72 + 80 + x / 5 ≥ 80

Add:

304 + x / 5 ≥ 80

Get Rid of the Denominator (Multiply Both Sides By 5):

(5) 304 + x / 5 ≥ 80 (5)

Multiply:

304 + x ≥ 400

Isolate x (Subtract 304 From Both Sides):

x ≥ 96

This means that Sam has to get at least (Greater than or equal to) a 96 in order to pass with a B average.

Answer:

9

Step-by-step explanation:

3^2 = 9

Answer:

[tex] y = -\frac{4}{3}x + 4 [/tex]

Step-by-step explanation:

Use the slope-intercept form to write the equation if the line of the graph given.

[tex] y = mx + b [/tex], where,

b = y-intercept, which is where the line cuts across the y-axis = 4.

m = slope = [tex] \frac{y_2 - y_1}{x_2 - x_1} = \frac{0 - 4}{3 - 0} = \frac{-4}{3} [/tex]

Substitute m = ⁴/3 and b = 4, into the slope-intercept formula to get the equation of the line:

[tex] y = mx + b [/tex]

[tex] y = -\frac{4}{3}x + 4 [/tex]

Answer:

Rational, irrational, rational, irrational

Step-by-step explanation:

-115.5: all negative numbers are rational

23.083: 3 is recurring- recurring numbers are irrational

2 under root 9 = 6

the number goes on without a pattern= irrational

Answer:

D; $223.74

Step-by-step explanation:

The amount of bill before tax = $193.75

Percentage of tax added by the waiter = 4%

Amount of tax added by the waiter = (4/100) * 193.75 dollars

                                                       = 775/100 dollars

                                                       = 7.75 dollars

Total bill after tax = (193.75 + 7.75) dollars

                           = 201.50 dollars

Percentage of tips that Luca wants to give = 16%

Amount of tips that Luca wants to give = (16/100) * 201.50 dollars

                                                             = 32,24 dollars

The total amount that Luca needs to pay = (201.50 + 32.24) dollars

                                                                = 233.74 dollars

The answer is D

Hope this helps!

Answer: D

pls give me brainliest

Answer: The total deducted from her account with be $220.81

Step-by-step explanation: Just add them all together adding $1.50 after each on

Answer:

x= 4.3125

Step-by-step explanation:

Answer:

x=4+7i and x=4-7i

Step-by-step explanation:

Rewrite the given quadratic equation by completing the square.

x^2-8x=-65

x^2-8x+16=-65+16

x^2-8x+16=-49

(x-4)^2=-49

Now, solve the equation by applying the square root property and isolating x.

(x-4)^2=-49

√(x-4)^2 = √-49

x-4=+7i

x=4+7i

So, the solutions to the given quadratic equation are x+4+7i and x=4-7i.

Answer:

357

Step-by-step explanation:

Pls mark brainliest :)

Answer: I did the test i used this and i got it right trust me the answer is below good luck

Step-by-step explanation:

Renee has it right because one of the line passes through the origin the questions remain the same a more extensive version of Y=mx is y=mx +b.

Answer:

-15

Step-by-step explanation:

35+25=60

60-50=10

10-25=-15

Last year the chess club had 30 members. This year the club has 24 members.

Last year, the chess club had 30 members. This year, the club has 24 members. Since this year had less than last year ( 30 > 24), the percent will be decreasing.

To find the percent decrease, you have to use the following formula.

[tex]\frac{Difference}{Original} \times 100[/tex]

Difference refers to the difference between the two numbers, 24 and 30. The difference between 24 and 30 is 6. Original refers to the original number, which is last year's amount of members in the chess group. Therefore, original = 30.

Substitute the numbers into the formula.

[tex]\frac{Difference}{Original} =\frac{6}{30} =0.2[/tex]

To convert the decimal to a fraction, multiply the decimal by 100.

[tex]0.2 \times 100 = 20 \%[/tex]

The answer is the number of chess members decreased by 20%.

____

Since I started off by identifying whether it was decreasing or increasing, I did the work a bit differently. When finding the difference, you would usually subtract 30 from 24, which results in -6. Above I used 6, but if you used -6, you would end up with a result of -20%, which means it decreased by 20%. They bot end up with the same result, but you don't always have to first identify whether it's decreasing or increasing.

____

Answer:

Decreasing

Step-by-step explanation:

The percentages are decreasing because one year the club had 30 members and the present year has 24 members that decreased by 6!

Answer:

A

Step-by-step explanation:

quotient is answer to division problem

Answer:  A.

Step-by-step explanation:

In the division model you divide to find the number of counters in each group. ... In multiplication the numbers you multiply are called factors; the answer is called the product. In division the number being divided is the dividend, the number that divides it is the divisor, and the answer is the quotient.

I hope this helps plz tell me if its wrong so i can fix it.

Answer:

7x+20=41

Step-by-step explanation:

41-20=21

21/7=3

x=3

x represents the hours worked.

Answer:

2 x 2 x 2 x 2 x 3.

Step-by-step explanation:

The number 48 expressed as a product of its prime factors is 2 x 2 x 2 x 2 x 3.

Answer:

2 x 2 x 2 x 2 x 3.

Step-by-step explanation:

^^^

Answer:

b

Step-by-step explanation:

used a calucator

Ans-

-3/5 is the slope.

Step-by-step explanation:

3x+5y=20

5y= -3x + 20

y= -3/5x + 20

m= -3/5