HELP ASAP PLEASE WILL MARK BRAINIEST

Answer:

√81/63

Step-by-step explanation:

(9x-18)7x+5= 63x^2-86+5; 63x^2=81;x=√81/63

Answer:

The water level will change at a rate of - 2 7/18 inches per year

Step-by-step explanation:

From the question, we have a change of -7 1/6 inch every 3 years

We now want to calculate the value of the change every year

Mathematically, that will be;

- 7 1/6 divided by 3

= -43/6 divided by 3

= -43/18 = - 2 7/18 inch per year

Answer:

7 meters per second.

Step-by-step explanation:

Given that,

Andy runs 436.8 meters in 62.08 seconds.

We need to find how far he run in each second. It can be calculated by dividing distance by time taken as follows :

[tex]x=\dfrac{436.8\ m}{62.08\ s}\\\\=7.03\ m/s[/tex]

or

x = 7 m/s

So, Andy will cover 7 meters per second.

Answer:

Numerator = 3

Step-by-step explanation:

Let the numerator is x.

The denominator is 6 more that the numerator, 6+x

The fraction is equivalent to 1/3. ATQ,

[tex]\dfrac{x}{x+6}=\dfrac{1}{3}[/tex]

Cross multiplying both sides,

[tex]3x=x+6\\\\3x-x=6\\\\2x=6\\\\x=\dfrac{6}{2}\\\\x=3[/tex]

Numerator = 3

So, the numerator is 3.

Answer:

f(- 1) = - 19

Step-by-step explanation:

To evaluate f(- 1) substitute x = - 1 into f(x) , that is

f(- 1) = - 4(- 1)² + 13(- 1) - 2 = - 4(1) - 13 - 2 = - 4 - 13 - 2 = - 19

Answer: B

Step-by-step explanation: Got a 100 on the test

Answer:

w = -9

Step-by-step explanation:

7/3w + 19 = -2

          -19     -19

7/3w = -21

Divide both sides by 7/3

w = -9

Answer:

-6

Step-by-step explanation:

2(-1)^2 + 8*-1 = 2*1+8*-1=2-8=-6

Answer:

-6

Step-by-step explanation:

f(-1) for x

2x^2+8x

2(-1)^2+8(-1)

2-8

-6

(caution: this is very illegal!) If Kevin travels 2,212 miles in 13 hours, that means he drives 170mph.

Hope this helps: If it did, please mark brainliest, give a thanks, and rate it five stars! [I'm two brainliests away from moving up!] Have an amazing rest of your day and stay safe! Let me know if you need anymore help! xx

2476 would be the correct answer

Answer:

2476

Step-by-step explanation:

Answer:

A, B,

Step-by-step explanation:

the answer to 1 is c!!!!!!!

Answer:

Step-by-step explanation:

Because every triangle that can ever be made has three sides, you can open up the triangle so that it becomes a straight horizontal line. A horizontal line is also 180 degrees which is why this idea works with triangles.

The reason for the sum of the angles in any triangle is 180 is that when we open up the sides of a triangle we get a straight line where the angle of a straight line is 180 degrees.

It is a two-dimensional figure which has three sides and the sum of the three angles has are equal to 180 degrees.

We have,

The sum of the angle measures in any triangle is 180.

We see that,

In a triangle, there are three sides and three angles.

If we open up the triangle, we see that the three sides of the triangle form a straight line.

The angle of a straight line is 180 degrees.

Thus,

The reason for the sum of the angles in any triangle is 180 is that when we open up the sides of a triangle we get a straight line where the angle of a straight line is 180 degrees.

Learn more about triangles here:

https://brainly.com/question/25950519

#SPJ2

Answer:

Step-by-step explanation:

12÷(-3)(2)+5= -3

-4(2)+5

-8+5

-3

Given:

Price of a pair of binoculars = $155.75

Sales tax = 6.5%

To find:

The amount of sales tax Nick will pay on the purchase to the nearest cent.

Solution:

According to the question,

Sales Tax value = 6.5% of Price of a pair of binoculars

                        [tex]=\dfrac{6.5}{100}\times 155.75[/tex]

                        [tex]=0.065\times 155.75[/tex]

                        [tex]=10.12375[/tex]

                        [tex]\approx 10.12[/tex]

Therefore, the amount of sales tax is $10.12.

Answer:

83 and 98

Step-by-step explanation:

Answer:

step by step

i hope help you

9514 1404 393

Answer:

Step-by-step explanation:

The sum of length and width is half the perimeter. If the perimeter is the same, so will be the sum of length and width:

  7 + 5 = x + (4x -3)

  15 = 5x . . . . . . . add 3, simplify

  3 = x

The value of x is 3.

The length of Rectangle B is 4(3)-3 = 9 inches.

The width of Rectangle B is 3 inches.

Answer:

Step-by-step explanation:

it's between 50 and 52

Answer:

Between 50 and 52

Step-by-step explanation:

Answer:

1.2 sq in.

Step-by-step explanation:

We know the formula to find the area of a trapezoid is a+b/2(h)

4+8/2(5)=12/10

12/10=1.2

Therefore the area is 1.2 sq in.

Answer:

Equation of required line is: [tex]\mathbf{x+3y=-9 }[/tex]

Step-by-step explanation:

We need to find equation for a line that's perpendicular to [tex]6x-2y=8[/tex] when it passes through (6,-5)

We will use the slope-intercept form: [tex]y=mx+b[/tex] where m is slope and b is y-intercept.

Finding Slope m:

When two lines are perpendicular there slopes are [tex]m=-\frac{1}{m}[/tex]

Finding slope of given equation first: [tex]6x-2y=8[/tex]

Writing in slope-intercept form:

[tex]6x-2y=8\\-2y=-6x+8\\y=\frac{-6x}{-2}+\frac{8}{-2}\\y=3x-4[/tex]

Comparing it with slope intercept form: [tex]y=mx+b[/tex] , m= 3

So, slope of given equation is 3

Now, the slope of required equation will be [tex]m=-\frac{1}{m}[/tex]

So, Slope m=-1/3

Finding y-intercept

Using slope m=-1/3 and point (6,-5) we can find y-intercept

[tex]y=mx+b\\-5=\frac{-1}{3}(6)+b\\-5=-2+b\\b=-5+2\\b=-3[/tex]

So, y-intercept is b=-3

Now, finding the equation of required line having Slope m=-1/3 and y-intercept b= -3

[tex]y=mx+b\\y=-\frac{1}{3}x-3[/tex]

Writing in standard form:

[tex]y=-\frac{1}{3}x-3\\y=\frac{-x-9}{3}\\3y=-x-9\\x+3y=-9[/tex]

So, equation of required line is: [tex]\mathbf{x+3y=-9 }[/tex]

Answer:

12

Step-by-step explanation:

-25 from both side

x^2= 144

then you square root it

x= 12

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{x^2 + 25 = 169}[/tex]

[tex]\text{Subtract 25 to both sides}\downarrow[/tex]

[tex]\mathsf{x^2 + 25 - 25 = 169 - 25}[/tex]

[tex]\text{Simplify it}\downarrow[/tex]

[tex]\mathsf{x^2 = 169 - 25}[/tex]

[tex]\mathsf{x^2 = 144}[/tex]

[tex]\text{Take the square root of the numbers (including the mystery number (x))}\downarrow[/tex]

[tex]\mathsf{x = \pm \sqrt{144}}[/tex]

[tex]\text{So, that means that}\downarrow[/tex]

[tex]\mathsf{x = 12}[/tex]

[tex]\text{Or even:}[/tex] [tex]\mathsf{x = -12}[/tex]

[tex]\huge\text{Therefore, your answer should be:}[/tex]

[tex]\huge\boxed{\mathsf{ x =\ }\frak{12}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

Step-by-step explanation:

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\\\\\left(x_1,\:y_1\right)=\left(-1,\:2\right),\:\\\left(x_2,\:y_2\right)=\left(3,\:3\right)\\\\m=\frac{3-2}{3-\left(-1\right)}\\\\m=\frac{3-2}{3+1}\\\\m=\frac{1}{4}\\\\[/tex]

Answer: The first step is to add 5.2 to both sides.

Answer:

add 5.2 to each side of the equation.

Step-by-step explanation:

i did it on edge2020

Answer:

Step-by-step explanation:

Given the equation 1 – (2x + 4) = –4x + 5, we are to find the correct solution of the equation;

Step 1: Open the parenthesis;

1 – (2x + 4) = –4x + 5

1-2x-4 = -4x + 5

1-4-2x = -4x +5

-3-2x = -4x + 5

Step 2: Collect like terms

-2x + 4x = 5 + 3

2x = 8

Step 3: divide both sides by 2;

2x/2 = 8/2

x = 4

Hence the correct value of x is 4

Answer: I think the one you chose is correct

Step-by-step explanation: I took a quiz with that question today

Answer:

I would choose C

Step-by-step explanation:

Step-by-step explanation:

2x4y. x=2. y=4

2(2)4(4) Pemdas

2x2=4 4x4=16

4x16

64