what is the positive value of x in the following expression?
[tex]2x ^{2} - 7x - 4[/tex]
​

Answer: 1 and 5  ?

i'm so confused o-o

Step-by-step explanation: i have no idea what i'm doing i just picked a random  answer, i'm very sorry if i'm wrong :c

Answer:

Do you have a picture, I can answer you faster?

Answer:

Without me you will surely die. Too much of me and like a pig you may lie. What am I?

Step-by-step explanation:

Oink Oink That ain't my tail im a male

Answer:

[tex]\sqrt{x^2+y^2+1}=18[/tex]

Step-by-step explanation:

We are given:

[tex]x^2=18x+y\qquad\qquad[1][/tex]

[tex]y^2=18y+x\qquad\qquad[2][/tex]

Subtracting [1] and [2]:

[tex]x^2-y^2=18x+y-(18y+x)[/tex]

Operating:

[tex]x^2-y^2=18x+y-18y-x[/tex]

Recall:

[tex]x^2-y^2=(x-y)(x+y)[/tex]

Substituting:

[tex](x-y)(x+y)=18x+y-18y-x[/tex]

Rearranging:

[tex](x-y)(x+y)=18x-18y-(x-y)[/tex]

[tex](x-y)(x+y)=18(x-y)-(x-y)[/tex]

Dividing by x-y (recall x≠y):

[tex]x+y=18-1=17[/tex]

[tex]x+y=17\qquad[3][/tex]

Now we add [1] and [2]:

[tex]x^2+y^2=18x+y+18y+x[/tex]

Rearranging:

[tex]x^2+y^2=18x+18y+x+y[/tex]

[tex]x^2+y^2=18(x+y)+(x+y)[/tex]

[tex]x^2+y^2=19(x+y)[/tex]

Substituting from [3]

[tex]x^2+y^2=19*17=323[/tex]

Adding 1:

[tex]x^2+y^2+1=324[/tex]

Taking the square root:

[tex]\sqrt{x^2+y^2+1}=\sqrt{324}=18[/tex]

Thus:

[tex]\mathbf{\sqrt{x^2+y^2+1}=18}[/tex]

Answer:

The answer should be $12.43

Answer:

[tex]k = 2.5[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

[tex]\frac{7.6}{2} = \frac{9.5}{k}[/tex]

Step 2: Solve for k

Answer:

The answer is K+2.5

Step-by-step explanation:

Answer:

∠ JHF = 69°

Step-by-step explanation:

Since HJ is a midline then it is parallel to EG , thus

∠ JHF and ∠ GEH are corresponding and congruent, then

7x + 62 = 79 - 10x ( add 10x to both sides )

17x + 62 = 79 ( subtract 62 from both sides )

17x = 17 ( divide both sides by 17 )

x = 1

Thus

∠ JHF = 7x + 62 = 7(1) + 62 = 7 + 62 = 69°

Answer:

7x + 62 = 180

7x= 180 - 62

x = 118 / 7

x = 16

7 × x = 7 × 16

112 + 62 = 174

Step-by-step explanation:

HOPE ITS CORRECT..

Answer:

The elevation is [tex]32.3^{o}[/tex].

Step-by-step explanation:

The home of the meerkat is 8 feet below the surface. So that the root of the stump would not be in his path, he dug 15 feet lower.

This can be represented by the sides of a right angled triangle. Applying the appropriate trigonometric function, let the elevation be represented by θ.

Then,

Sin θ = [tex]\frac{opposite}{hypotenuse}[/tex]

        = [tex]\frac{8}{15}[/tex]

Sin θ = 0.5333

⇒ θ = [tex]Sin^{-1}[/tex] 0.5333

      = 32.287

θ = [tex]32.3^{o}[/tex]

The elevation of the meerkat is [tex]32.3^{o}[/tex].

Answer:

7+2(a-3)=-9

a= -5

Step-by-step explanation:

7+2(a-3)=-9

Distribute 2 through the parentheses

Example: 7+2a-6=-9

Next: 7+2a-6=-9

Subtract the numbers

1+2a=-9

Move constant to the right hand side and change its sighn 2a=-9-1

2a=-9-1

Calculate the difference

2a=-10

Divide both sides of the equation by 2

Answer: a=- -5

Answer:

51 and  -27

Step-by-step explanation:

The sum of two numbers is 24 and their difference is 78. What are the two numbers? Let's start by calling the two numbers we are looking for x and y.

The sum of x and y is 24. In other words, x plus y equals 24 and can be written as equation A:

x + y = 24

The difference between x and y is 78. In other words, x minus y equals 78 and can be written as equation B:

x - y = 78

Now solve equation B for x to get the revised equation B:

x - y = 78

x = 78 + y

Then substitute x in equation A from the revised equation B and then solve for y:

x + y = 24

78 + y + y = 24

78 + 2y = 24

2y = -54

y = -27

Now we know y is -27. Which means that we can substitute y for -27 in equation A and solve for x:

x + y = 24

x + -27 = 24

X = 51

Summary: The sum of two numbers is 24 and their difference is 78. What are the two numbers? Answer: 51 and -27 as proven here:

Sum: 51 + -27 = 24

Difference: 51 - -27 = 78

Answer:

The numbers are 27 and 51

Explanation

x - y = 24

x + y = 78

Add together the equations

2x = 102

x = 51

Put into equation

51 - y = 24

27 = y

Answer: h(g(x))= 2/6x-7

Step-by-step explanation:

1.h(g(x))= 2/(g(x))+3

2.g(x)= 3x-5

h(g(x))= 2/2(3x-5)+3

=2/6x-10+3

=2/6x-7

Answer:

the answer is 612 -4n4+6n-5772

The expression that has like terms is (C) 7n+4n-3m-6n.

An expression can be as simple as a single number or variable, or it can be more complex, involving multiple operations and variables.

For example, the expression "3x + 4" contains the variable x, along with the constant values 3 and 4, and the operations of multiplication and addition.

Like terms are terms that have the same variables raised to the same powers.

In the first expression, 9n^7 and -2n have different powers of n, so they are not like terms. The constant term, -4112, is also not like any other term.

In the second expression, 3n and -3 are like terms, as they are both constants with no variables.

In the third expression, 7n, 4n, and -6n are all like terms because they all have the same variable, n, raised to the first power.

In the fourth expression, -4n^4 and 6n have different powers of n, so they are not like terms. The constant term, 612-5772=-5160, is also not like any other term.

Therefore, the expression that has like terms is (C) 7n+4n-3m-6n.

To know more about an expression follow

https://brainly.com/question/12517367

#SPJ7

Answer:

Here you go

Step-by-step explanation:

The quadratic formula helps you solve quadratic equations, and is probably one of the top five formulas in math. Then the formula will help you find the roots of a quadratic equation, i.e. the values of x where this equation is solved.

Answer:

[tex]y = -3x +8[/tex]

Step-by-step explanation:

The graph diagram is not given; however, the equation can be solved from the given points

(2,2) and (0,8)

This is represented as:

[tex](x_1,y_1) = (2,2)[/tex]

[tex](x_2,y_2) = (0,8)[/tex]

Calculate slope (m)

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{8 - 2}{0 - 2}[/tex]

[tex]m = \frac{6}{- 2}[/tex]

[tex]m =-3[/tex]

The equation is calculated using:

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

[tex]y - 2 = -3(x - 2)[/tex]

[tex]y - 2 = -3x + 6[/tex]

Add 2 to both sides

[tex]y - 2 +2= -3x + 6+2[/tex]

[tex]y = -3x + 6+2[/tex]

[tex]y = -3x +8[/tex]

Answer:

11x20

Step-by-step explanation:

15=5 equals 20 so 11x20 is 220

Step-by-step explanation:

Let length is x and breadth is y.

The formula for the area and the perimeter of a rectangle is given by :

A = xy

P = 2(x+y)

Here, A = 8 mi² and P = 16 miles

Putting all the values,

xy = 8

y=8/x ......(1)

2(x+y) = 16

x+y = 8 .....(2)

Put equation (2) in equation (1) as follows :

[tex]x+\dfrac{8}{x}=8\\\\x^2+8=8x\\\\x^2-8x+8=0[/tex]

When we solve, we get :

x = 6.82 miles, 1.17 miles

Put the value of x in equation (1)

When x = 6.82 miles,

y = 8/6.82

y = 1.17 miles

When x = 1.17 miles,

y = 8/1.17

y = 6.82 miles

Hence, the dimension of the field is 6.82 miles and 1.17 miles.

Answer:

133 bucks can i get brainliest

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Sum means to add so answer A is correct

Answer:

It depends on your situation

Step-by-step explanation:

If you have a mixed fraction, for example: 5 23/3000 + 101 777/3000 you would have to make them irrational numbers and add them. Like so: 3000x5 = 15000. 15000+23 = 15023.  15023/3000. Same process but this time you get 303777/3000. You then add the numerators (top numbers) and you'll get the sum over 3000.

For regular fractions you simply add the numerators. If your denominators are not the same, you need to find a common term that both can fit into. If the denominators are not the same, no matter the size of the fraction, you cannot add it.

Answer:

This is confusing what are you looking for?

Step-by-step explanation:

Answer:

After solving the given formula for l, we get

l = A/w

Step-by-step explanation:

Given formula is:

A = lw

The given formula is the formula for area of a rectangle.

Solving for a particular variable means that the variable has to be isolated on one side of the equation.

In order to solve,

Dividing both sides by w

[tex]\frac{A}{w} = \frac{lw}{w}\\l = \frac{A}{w}[/tex]

Hence,

After solving the given formula for l, we get

l = A/w

Answer:

okay, but with what should i help?

Answer with what

Step-by-step explanation:

Answer:

30.8

Step-by-step explanation:

1. Write the ratio for the smaller triangle as 14/10 and the ratio for the larger triangle as x/22.

2. Set the ratios equal to each other.

14/10 = x/22

3. Cross multiply and solve for x.

14 x 22 = 308

10 x x = 10x

4. Divide by 10

x = 30.8

Answer:

30.8cm they are correct

Step-by-step explanation:

i am from connexus 8th grd pre algrabra

unit 5 lesson 3

1. 1:2

2. C. yes they are similar they have porportional side lengths and = ange measures

3. x = 4.5m

4. x = 30.8cm

5. x = 6 m

Answer:

good job that is correct

Step-by-step explanation:

goooooooooooooooooooooooood joooooooooooooooob

yep

Answer:

10 i think

Step-by-step explanation:

Answer: 10 pounds per year

The given unit rate is 30 pounds every 3 years.

Now, we will divide 30 pounds by 3 years.

30 pounds ÷ 3 years = 10 pounds per year

The answer is 10 pounds per year.

This question is incomplete

Complete Question

Phrases can be used to represent the inequality 6.5x+ 1.5 ≤ 21? Select two options. The product of 6.5 and the sum of a number and 1.5 is no more than 21. The sum of 1.5 and the product of 6.5 and a number is no greater than 21. O The product of 6.5 and a number, when increased by 1.5, is below 21. The sum of 1.5 and the product of 6.5 and a number is at least 21.

Answer:

The product of 6.5 and a number, when increased by 1.5, is at most 21.

The product of 6.5 and a number, when increased by 1.5, is below 21.

Step-by-step explanation:

We are given the inequality is: 6.5x+ 1.5 ≤ 21

The sign ≤ is known as Less than or equal to.

≤ can also be said to be = at most

Therefore, the Phrases that represents the inequality

6.5x+ 1.5 ≤ 21 is:

* The product of 6.5 and a number, when increased by 1.5, is at most 21.

* The product of 6.5 and a number, when increased by 1.5, is below 21.

Answer:

b and c

Step-by-step explanation: