solve x + 4y = 14 and 3x + 3y = 15 by elimination

Answer:

x = 7.5

Step-by-step explanation:

Given that the triangles are similar then the ratios of corresponding sides are equal, that is

[tex]\frac{9}{x}[/tex] = [tex]\frac{6}{5}[/tex] ( cross- multiply )

6x = 45 ( divide both sides by 6 )

x = 7.5

Answer:

x= -2

Step-by-step explanation:

7x+26+5x=2

7x+5x=12x

12x=2-26

12x= -24

(divide both sides by 12)

x= -2

Answer:

[tex]7x + 26 + 5x = 2 \\ 12x = 2 - 26 \\ 12x = - 24 \\ x = - 2[/tex]

plzz mark as brainliest

answer: B.5

i got the answers from the test

Answer:

b5

Step-by-step explanation:

Step-by-step explanation:

by deleting

9y = -9

y = -1

6x - 4 = -10

6x = -6 then x = -1

Answer:

A. is the correct answer

Step-by-step explanation:

got it correct on the unit test

Answer:

The correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by [tex]\pi[/tex]

Option D is correct option.

Step-by-step explanation:

The circumference of table top = 24 [tex]\pi[/tex] inches

We need to find area of table top

The formula used to find area is: [tex]Area = \pi r^2[/tex]

We need to find radius of tabletop.

The formula used to find circumference is: [tex]Circumference = 2\pi r[/tex]

Putting value of circumference we can find radius

[tex]Circumference = 2\pi r\\24\pi =2\pi r\\r=\frac{24\pi}{2\pi}\\r=12[/tex]

So, radius of table top = 12

Now, finding the area:

[tex]Area = \pi r^2\\Area=\pi(12)^2\\Area=3.14(144)\\Area=452.16\:inches^2[/tex]

So, the correct option which best describes this method is:

Find half of 24 to calculate the radius. Then square the radius and multiply the result by [tex]\pi[/tex]

Option D is correct option.

Answer:

9x^4 - 6x^3 + 4x - 4

Step-by-step explanation:

I got this answer but I don't know if I am correct. That's what i understood based off what you wrote.

Answer:

7 groups of 4.

Step-by-step explanation:

hope this helps!

Answer:

We conclude that the gradient of the line is: 2/3

Step-by-step explanation:

It is clear that the given graph represents a line or linear function.

From the graph, taking two points

Finding the gradient or slope of the line

Using the formula

Gradient = m =  [y₂ - y₁] /  [x₂ - x₁]

                      =  [-2 - 0] / [0 - 3]

                      = -2 / -3

                       = 2/3

Thus, the slope of the line = m = 2/3

Therefore, we conclude that the gradient of the line is: 2/3

Answer:

Without stopping?  180 miles

Step-by-step explanation:

Answer:23

Step-by-step explanation:

Answer:

3/10

Step-by-step explanation:

.

Answer:1/12

Step-by-step explanation:

Answer:

1/12

Step-by-step explanation:

Answer:

x=1

Step-by-step explanation:

Step 1: Subtract 3x from both sides.

x−10−3x=3x−12−3x

−2x−10=−12

Step 2: Add 10 to both sides.

−2x−10+10=−12+10

−2x=−2

Step 3: Divide both sides by -2.

−2x/−2 = −2/−2

x = 1

Answer:

x = 2[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

x² + (2[tex]\sqrt{2}[/tex] )² = 4²

x² + 8 = 16 ( subtract 8 from both sides )

x² = 8 ( take the square root of both sides )

x = [tex]\sqrt{8}[/tex] = 2[tex]\sqrt{2}[/tex]

Answer:

x={-5,-6}

Step-by-step explanation:

x²+11x+30=0

x²+5x+6x+30=0 (as 5*6=30 and 5+6=11)

x(x+5)+6(x+5)=0

(x+5)(x+6)=0

so

x+5=0

x+6=0

therefore

x=-5

x=-6

Answer:

x = - 6, x = - 5

Step-by-step explanation:

Given

x² + 11x + 30 = 0

Consider the factors of the constant term (+ 30) which sum to give the coefficient of the x- term (+ 11)

The factors are + 6 and + 5 , since

6 × 5 = 30 and 6 + 5 = 11, then

x² + 11x + 30 = 0

(x + 6)(x + 5) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x + 5 = 0 ⇒ x = - 5

Answer:

length 70 and width 35

Step-by-step explanation:

The dimensions (length and width) of Randy's living room are,

10 by 15 feet.

Quadrilaterals with parallel sides that are equal to one another and four equal vertices are known as rectangles.

The given diagram is the floor plan of Randy's apartment.

All measurements are in feet.

From the diagram:

The dimensions (length and width) of Randy's living room are,

10 by 15 feet.

Therefore, the dimensions are 10 by 15 feet.

To learn more about the rectangular;

brainly.com/question/21416050

#SPJ2

Answer:

i dont know

Step-by-step explanation:

sorry but pleasr still work hard!

Answer:

70%

Step-by-step explanation:

Given data

Last years worth of vanishing potion= $82

This years worth of vanishing portion= $118

Note: Another way of asking this question is "what percent of $82 is $118"

So

=82/118*100

=0.69*100

=69%

=70% approx

Hence last years sale is 70% of this year's sales

Is the product of 41/32 and 12/46 greater than, less than or equal to 12/6?

[tex] \frac{41}{32} \times \frac{12}{46} [/tex]

[tex] = \frac{41}{8} \times \frac{3}{46} [/tex]

[tex] = \frac{123}{368} [/tex]

[tex]123 \times 6 = 738[/tex]

[tex]368 \times 12 = 4416[/tex]

[tex]738 < 4416[/tex]

[tex] \frac{123}{368} < \frac{12}{6} [/tex]

less than

#CarryOnLearning

Step-by-step explanation:

what is that X, and X²???

Answer

The cheaper dog sitter is Derrick's.

Step-by-step explanation:

You did not really ask a question here but i am assuming that your asking who is the cheaper route.

Answer:

coefficient

Step-by-step explanation:

Answer:

Coefficient

Step-by-step explanation:

Answer:

Converting y = -2x +5 to point-slope form will be:

Step-by-step explanation:

We know that the slope-intercept form of the line equation is

y = mx+b

where

Given the equation

[tex]y = -2x +5[/tex]

comparing with the  slope-intercept form

Slope of the line = m = -2

The y-intercept b = 5

We know that the value of y-intercept can be determined by setting x = 0, and determining the corresponding value of y.

Thus, the ordered pair or point representing the y-intercept will be:

Now, we have

Now, using the point-slope form of the line equation

[tex]y-y_1=m\left(x-x_1\right)[/tex]

where

substituting the values m = -2 and the point (x₁, y₁) = (0, 5)

[tex]y-y_1=m\left(x-x_1\right)[/tex]

[tex]y - 5 = -2(x-0)[/tex]

Therefore, converting y = -2x +5 to point-slope form will be:

Answer:

She should aim 6 feet down the wall

Explanation:

The diagram attached sketches the situtation.

Since the angle with which the ball hits the wall is the same with which it bounces, angle β is the same for the two shown triangles.

Then, since both are right triangles, then all the angles are congruent and the triangles are similar. Hence, you can equal the ratios of the sides, to make an equation:

x/4 = y/2 ⇒ x = 2y

You have other equation:

x+ y = 18

Substitute

2y + y = 18

3y = 18

y = 18/3

y = 6 ← this is the distance down the wall where the ball should hit

x = 2(6) = 12

Then, she should aim 6 feet down the wall.

Answer:

86.56 so we can do 6(x.3) by .(57)2

Step-by-step explanation:

Answer:

Here's  9th grade answer from one high-schooler to another

Step-by-step explanation:

The answers 9 i believe since you have to isolate the variables and subtract them  

Answer:

x²+3x+2

Step-by-step explanation:

According to Vieta's formula x²-(sum of roots)x((product of roots)=0

Therefore x²-(-3)x+2=0

=x²+3x+2