(2x+3y=23)(3x+4y=15)using ellimination method.

​

Answer:

Step-by-step explanation:

5.13 - 4.75 = 0.38

4.75 / 0.38 = 12.5

Answer:

y = 2x + 4

Step-by-step explanation:

So, the cab company charges a flat fee of $4 per cab ride, meaning 4 has no variables in the equation. Now, x is the distance, and the cab company charges $2 per mile driven. Per mile driven is a distance unit, so the x goes with the 2. From that, you can get that the cost is equal to 4 dollars plus 2x (2 times the distance in miles). This is y = 2x+4.

Answer:

the answer is c

Step-by-step explanation:

Answer:

The probability of all three children being girls will Be: 1/8

Step-by-step explanation:

The couple has 3 children.

We have to determine the probability of all three children being girls.

As we know that for each child, the probability of being a girl is ' [tex]\frac{1}{2}[/tex] ' as is the probability of being a boy is ' [tex]\frac{1}{2}[/tex] '.

so for there to be all girls, the probability will be:

P  ( all girls)  = 1/2 × 1/2 × 1/2 = 1/8      

Therefore, the probability of all three children being girls will Be: 1/8        

Answer:

okay so

Step-by-step explanation:

A and B together means straight

C is curved or somthing like curved bc

its not like a circle i would so Horizontical or Vertical

Ans) The prime factorization of 90 is 2 × 3 × 3 × 5.

Answer:

WHAT IS THIS QUESTION ABOUT?

Step-by-step explanation:

Answer:

dey r all true

Step-by-step explanation:

Answer:

465??

Step-by-step explanation:

Answer:

C  DONT REPORT ME

Step-by-step explanation:

Answer:

1/6

Step-by-step explanation:

1/3÷by.81_81_1 and =1/6according to the calculator :^)

Answer:

below

Step-by-step explanation:

The 5 represents the hundredth place so this means that its already rounded to the nearest hundredth.

Best of Luck!

Answer:

Approximately 6.67 pancakes.

Step-by-step explanation:

We can write an equation that relates the two items.

Let P represent Pancake and let W represent Waffle.

Pancakes are worth 1.5 times a Waffle. Therefore:

[tex]W=1.5P[/tex]

To find the Pancake value for 10 Waffles, we can substitute 10 for W and solve for P. Therefore:

[tex]\begin{aligned} W&=1.5P \\ 10&=1.5P \\ 6.\overline{6}&=P \end{aligned}[/tex]

Hence, 10 Waffles equates to approximately 6.67 pancakes.

Step-by-step explanation:

im not really sure about this but I think it's 6.1

Answer:

[tex]g(f(2)+3)=30[/tex]

Step-by-step explanation:

We have the two functions:

[tex]g(t)=t^2-t\text{ and } f(x)=1+x[/tex]

And we wish to find:

[tex]g(f(2)+3)[/tex]

First, let’s find f(2) first. So, we will substitute 2 for x for f(x):

[tex]f(2)=1+(2)=3[/tex]

Hence, we can now substitute 3 for f(2):

[tex]g(f(2)+3)=g(3+3)=g(6)[/tex]

Now, we can find g(6). Substitute 6 for t for g(t):

[tex]g(6)=(6)^2-(6)=36-6=30[/tex]

Therefore:

[tex]g(f(2)+3)=30[/tex]

Answer:

The answer is "[tex]\bold{\theta= 70.53^{\circ}}[/tex]"

Step-by-step explanation:

The given value:

[tex]8x+8y+8z = 1\ and \ 8x-8y+8z = 1[/tex]  

When the normal vectors are in the plane:  

[tex]n_1 = < 8,8,8 > \ and \ n_2 = < 8, -8, 8>:[/tex]

Because the two variables really aren't proportional to each other and the wings are not parallel.  

Let us just find that two vectors' dot product.

[tex]n_1 \cdot n_2 =<8,8,8> < 8,—8,8>\\\\ = 64-64+ 64 \\\\ = 64 \neq 0[/tex]

Therefore, we won't find that angle between both the given planes as parallel.

[tex]\cos \theta = \frac{n_1 \cdot n_2}{|n_1||n_2|}\\\\\cos \theta =\frac{64}{\sqrt{192} \sqrt{192}}\\\\\cos \theta =\frac{64}{8\sqrt{3} 8\sqrt{3}}\\\\\cos \theta = \frac{1}{3}\\\\ \theta = 70.53^{\circ}[/tex]

It is required to know the orientation of one plane relative to the other.

The angle between the planes is 70.5°.

The given planes are

8x + 8y + 8z = 1

8x − 8y + 8z = 1

Parallel

[tex]\dfrac{8}{8}=\dfrac{8}{-8}=\dfrac{8}{8}\\\Rightarrow 1\neq -1\neq 1[/tex]

The planes are not parallel.

Perpendicular

[tex]8\times 8+8\times -8+8\times8=64\neq 0[/tex]

The planes are not perpendicular as dot product is not 0.

Finding angle

[tex]\theta=\cos^{-1}\dfrac{8\times 8+8\times -8+8\times8}{\sqrt{8^2+8^2+8^2}\sqrt{8^2+(-8)^2+8^2}}\\\Rightarrow \theta=\cos^{-1}\dfrac{1}{3}\\\Rightarrow \theta=70.53^{\circ}[/tex]

Learn more about planes:

https://brainly.com/question/26262923

.5

Step-by-step explanation:

5 divided by 10 is 0.5

Answer:

Yes your right

Step-by-step explanation:

Answer:

x = 85°, y = 30°

Step-by-step explanation:

40° + x + 55° = 180°

x + 95° = 180°

x = 85°

85° + 65° + y = 180°

150° + y = 180°

y = 30°

Answer:

The values of a and b are:

Step-by-step explanation:

Given the exponential model

[tex]y=a\cdot \:b^x[/tex]

Given the points

(0, 2) and (3, 128)

We know that the y-intercept of [tex]y=a\cdot \:b^x[/tex] is (0, a).

so

a = 2

putting x = 3, y = 128 and a = 2

[tex]y=a\cdot \:b^x[/tex]

[tex]128=2\cdot \:b^3[/tex]

Switching sides

[tex]2b^3=128[/tex]

[tex]\frac{2b^3}{2}=\frac{128}{2}[/tex]

[tex]b^3=64[/tex]

Taking the real value such as:

[tex]\mathrm{For\:}x^3=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt[3]{f\left(a\right)}[/tex]

so

[tex]b=\sqrt[3]{64}[/tex]

[tex]b=\sqrt[3]{4^3}[/tex]

[tex]b=4[/tex]

Therefore,

Answer:

Step-by-step explanation

150 divided by 4 3/8 = 34.2

We have:

4x - 28 > 16

       [tex]4x-28+28>16+28[/tex]

       4x > 44

      [tex]\dfrac{4x}{4}>\dfrac{44}{4}[/tex]

       [tex]\boxed{x>11}[/tex]

[tex]\begin{bmatrix}\mathrm{Solution:}\:&\:x>11\:\\ \:\mathrm{Interval\:Notation:}&\:\left(11,\:\infty \:\right)\end{bmatrix}[/tex]

Answer:

Second option

Step-by-step explanation:

In order to find the answer to this question you have to divide the numerator into the denominator remembering that whole numbers have a secret decimal point to the right of itself.

[tex]\frac{3}{18}[/tex]

[tex]\frac{3}{18} =3\div18[/tex]

[tex]3\div18=0.16666666666[/tex]

= 0.16666666666  or 0.16 repeating

Hope this helps.

Answer:

x/5 = 5280/1

Step-by-step explanation:

this is a proportion set up and then cross multiple. You will get your answer for x. Which is 26, 400 feet.

Answer:

[tex]y=-e^{-3x-c_1}+6[/tex]

Step-by-step explanation:

[tex]\frac{dy}{dx}+3y=18\\\\\mathrm{Substitute\quad }\frac{dy}{dx}\mathrm{\:with\:}y'\:\\\\y'\:+3y=18\\\\Rewrite\\\\\frac{1}{6-y}y'\:=3\\\\Solve \::\frac{1}{6-y}y'\:=3\\\\-In(6-y)=3x+c_1\\\\Isolate\:y\\\\\\y=-e^{-3x-c_1}+6[/tex]

Answer:   17.5 square yards

================================================

Work Shown:

base = 5 yards

height = 7 yards

The base and height are always perpendicular to one another

area of triangle = 0.5*(base)*(height)

area of triangle = 0.5*(5)*(7)

area of triangle = 17.5 square yards

The other values aren't used. They're likely thrown in as a distraction.

Answer:

Can you re-take the picture? It's too shaky then I can help you :)