Solve (3x + 3) = 27
O A. x = -8 and x = 10
B. x = 8 and x = -10
C. X = 8 and x= -8
D. X= -8 and x = -10

Answer:

A) 40 + d

B) 45 days

Step-by-step explanation:

A)

total cost = (cost of the air conditioner itself) + (money charged per day)*(days)

cost of air conditioner itself = $40

money charged per day = $1

days = d

40 + 1*d

= 40 + d

B)

total cost = 40 + d

total cost = $85

85 = 40 + d

45 = d

Time used the air conditioner for 45 days.

Answer:

Step-by-step explanation:

From the figure attached,

1). Sin(D) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

               = [tex]\frac{EF}{DF}[/tex]

               = [tex]\frac{24}{26}[/tex]

               = [tex]\frac{12}{13}[/tex]

2). Cos(D) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

                = [tex]\frac{ED}{DF}[/tex]

                = [tex]\frac{10}{26}[/tex]

                = [tex]\frac{5}{13}[/tex]

3). tan(D) = [tex]\frac{\text{Opposite side}}{\text{Adjacent side}}[/tex]

               = [tex]\frac{EF}{DE}[/tex]

               = [tex]\frac{24}{10}[/tex]

               = [tex]\frac{12}{5}[/tex]

4). sin(F) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

              = [tex]\frac{DE}{DF}[/tex]

              = [tex]\frac{10}{26}[/tex]

              = [tex]\frac{5}{13}[/tex]

5). cos(F) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

               = [tex]\frac{EF}{DF}[/tex]

               = [tex]\frac{24}{26}[/tex]

               = [tex]\frac{12}{13}[/tex]

6). tan(F) = [tex]\frac{\text{Adjacent side}}{\text{Adjacent side}}[/tex]

               = [tex]\frac{DE}{EF}[/tex]

               = [tex]\frac{10}{24}[/tex]

               = [tex]\frac{5}{12}[/tex]

Answer:

Step-by-step explanation:

$16 / 8 cans = $2 per can

Answer:

$1.56 d per pound

Step-by-step explanation:

18.72/12= 1.56

Answer:

See Below.

Step-by-step explanation:

We want to show that the Law of Cosines simplifies to the Pythagorean Theorem when the contained angle between the two known sides is 90°.

The Law of Cosines is given by:

[tex]c^2=a^2+b^2-2ab\cos(C)[/tex]

Where a and b are the two known sides, and C is the angle between them.

If C is 90° then we will have:

[tex]c^2=a^2+b^2-2ab\cos(90 ^\circ)[/tex]

Recall that the cos(90°)=0. Hence:

[tex]c^2=a^2+b^2-2ab(0)[/tex]

Simplify:

[tex]c^2=a^2+b^2[/tex]

So, we acquire the Pythagorean Theorem as desired.

Answer:

Theorem 1: In a parallelogram, the opposite sides are of equal length. Theorem 2: If the opposite sides in a quadrilateral are the same length, then the figure is a parallelogram. Theorem 3: A quadrilateral is a parallelogram if and only if the diagonals bisect each other.

Step-by-step explanation:

Hope this helps!!!

Answer:

d and g

Step-by-step explanation:

Given

(x - 2)² = - 16 ( take the square root of both sides )

x - 2 = ± [tex]\sqrt{-16}[/tex] = ± [tex]\sqrt{16(-1)}[/tex] = ± 4i ( add 2 to both sides )

x = 2 ± 4i

Thus

x = 2 + 4i → (d)

x = 2 - 4i → (g)

Answer:

[tex] m\angle CBE = 60\degree \\

m\angle FEB = 40\degree [/tex]

Step-by-step explanation:

If the given triangle is drawn to scale, then on measuring the required angles with protractor, we find:

[tex]m\angle CBE = 60\degree \\

m\angle FEB = 40\degree \\[/tex]

Answer:

0.315 per lb

Step-by-step explanation:

Answer:

330 miles

Step-by-step explanation:

If in 2 hours he drove 110 and you need to know how much miles will he have drove in 6, first you need to know if 2 is a multiple of 6, in this case it is so now you just divide 6/2 which is 3 so you multiply 110X3 wich gives you 330

Answer:

I think D

Step-by-step explanation:

because all the information seems important

The decimal equivalent is 0.60, and the percent is 60%. If you do 3/5, you get 0.60, and to get the percentage, you move the decimal two to the right, and add the percent sign. I hope you understand. :)

Answer:

This would be D. (6, 5)

Step-by-step explanation:

When moving 9 to the right, you take -3 and add 9 to it, which gives you 6.

Do the same thing with 15, but subtract 10 from it, since you are going to the left. This gives you 5.

Therefore, your answer should be (6, 5)

-3 + 9 = 6

15 + 10 = 5

Answer:

y = 2

Step-by-step explanation:

Since the line is parallel to the x-axis,

the gradient, m = 0

From the point, we know that

x = 5

y = 2

So y = 2 is the line that parallel to x-axis

Answer:

39.44

Step-by-step explanation:

Answer:

39.4418605

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

The partial products are apparently derived by multiplying parts of each value on either side of the decimal point:

  1.5 × 3.50 = (1 + 0.5)(3 + 0.50) = 1×3 + 0.5×3 +1×0.50 +0.5×0.50

  = 3 + 1.5 + 0.50 + 0.25 . . . . . partial products

Their sum is ...

  3 + 1.5 + 0.50 + 0.25 = 5.25

Zoe spent $5.25 on apples.

Hi there!

[tex]\large\boxed{\text{ She is incorrect.}}[/tex]

The format of a logarithmic equation is:

[tex]a^{b} = c\\\\log_{a}c = b[/tex]

In this instance:

a = e

b = 3x

c = 7

Rewrite as the logarithmic equation:

[tex]log_{e}7 = 3x[/tex]

Solve. Evaluate [tex]log_{e}7[/tex] and use algebra to find x:

[tex]1.946 = 3x\\\\x = 0.649[/tex]

Answer:

C

Step-by-step explanation:

vmlstjtndgydcyedhdhdh

Complete question is;

Tiothy evaluated the expression using x = 3 and y = –4. The expression is (xy^(-2))/(3x²y^(−4))

1. (1/3)x^(−1)(y²) 2. ((1/3)^(3−1))(−4²) 3. (1/3)(1/3)(−4)² 4. (1/3)(1/3)(−16) 5. −16/9 Analyze Timothy's steps. Is he correct? If not, why not?

A) Yes, he is correct.

B) No, he needed to add the exponents when he simplified the powers of the same base.

C) No, he needed to multiply 3 and –1 instead of creating a positive exponent in a fraction.

D) No, his value of (negative 4) squared should be positive because an even exponent indicates a positive value.

Answer:

D) No, his value of (negative 4) squared should be positive because an even exponent indicates a positive value.

Step-by-step explanation:

The expression is;

(xy^(-2))/(3x²y^(−4))

Simplifying this using law of indices gives;

⅓(x^(1 - 2)) × (y^(-2 -(-4))

This gives;

= (⅓x^(-1)) × y²

= ⅓ × (1/x) × y²

We are told that x = 3 and y = –4, thus;

= ⅓ × ⅓ × (-4)²

Square of a negative number is positive, thus (-4)² = 16

Thus;

⅓ × ⅓ × (-4)² = 16/9

Looking at the answer Timothy got, it's clear he made a mistake of not getting a positive number when he squared -4.

Thus,option D is the correct answer.

Answer:

D

Step-by-step explanation:

i got it correct

Answer:

48 plants

Step-by-step explanation:

Answer:

12 Cups

Step-by-step explanation:

s = 2f

If f = 6

S = 2 x 6

s = 12

Answer:

well u will need to multiply 2 times 6 and it will be 12 can i get brainlyist

Step-by-step explanation:

Answer: 21

Step-by-step explanation: 3 x 7 = 21

Answer:

21

Step-by-step explanation:

so 1 plus 2 which is 3 then do 3 plus 4 which is 7 so 3 times 7 is 21

Answer:

yes it is possible

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

Answer:

x = 1 and y = 6

Step-by-step explanation:

Add these equations

-2x+y=4

2x+y=8

2y=12

    2

y = 6

Plug in 12 for y.

-2x+(6) = 4

     -6    -6

-2x = -2

     -2

x = 1

Answer:

6 690.95 US$

Step-by-step explanation:

Answer:

x=-2

y=-5

Step-by-step explanation:

3x-y=-1

-3x+4y=-14

_________

-3y=-15

__. __

-3. -3

y=5

3x-(-5)=-1

3x+5=-1

-5. -5

_______

3x=-6

---. ---

3. 3

x=-2

Answer:

c, 50

Step-by-step explanation:

120-24= 96

Since we are measuring the size of one of the halves, you have to split that number in half, so 96 ÷ 2= 48.

48 rounds up to 50, so 50 is the answer