Please help, I will give brainliest to the fisrt person to answer CORRECTLY.

The ordered pair (-1, -7) is the solution to the equation 7x - 5y = 28.

The collection of variable values in linear equations that yields all feasible solutions is referred to as the solution of a linear equation. In order to describe real-world issues, linear equations contain unknown values in the form of one or more variables. The collection of values for each variable in a system of linear equations is referred to as the solution set.

Consider the equation,

7x - 5y = 28

Now put the values from options, the pair values at which LHS = RHS that will be the solution to the equation.

Put x = 77, y = 9 in the equation

7(7) -5(9)

= 49 - 45

= 4

This is not a solution.

Put x =4, y= 10

7(4) - 5(10)= 28 - 50

= -32

This is not a solution.

Put x= -1, y = -7

7(-1) - 5 (-7)

= -7 + 35

= 28

So, this is the solution to the equation as LHS = RHS

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Answer:

C. the ordered pair (1.5, 10)

Step-by-step explanation:

The number of each type of shirt ordered are as follows;

Old Navy had $940 worth of orders for shirts.

The prices for the shirts were categorized by style: $10 for tank tops, $14 for graphic tees, and $22 for polos.

The number of polos ordered was one more than half the number of graphic tees, and the number of graphic tees ordered was eight less than twice the number of tank tops.

let

x = number of graphic tees

Hence,

number of polos = 1 + 1 / 2 x

Number of tank tops = 1 / 2 x + 4

Therefore, the total

14x + 10(1 / 2 x + 4) + 22(1 + 1 / 2 x) = 940

14x + 5x + 40 + 22 + 11x = 940

30x + 62 = 940

30x = 878

x = 29.266667

x = 29

number of polos = 1 + 1 / 2 (29) ≈ 15

Number of tank tops = 1 / 2 (29) + 4 ≈ 19

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Answer: 80

Step-by-step explanation:

set the 4 numbers to be x,x+2,x+4,x+6

They add up to 332 so the equation would be

x+(x+2)+(x+4)+(x+6)=332

4x=320

x=80

the rest of the numbers are 82,84,86

smallest is 80

Answer: r = 12

Step-by-step explanation:

11 - 23 = 12

YOUR SO WELCOME!!! :D

Answer:

$33.25

Step-by-step explanation:

Two packages cost $9.50

Divide $9.50 by two get the cost for one package

$4.75 per package

$4.75 * 7 to get the cost for 7 packages

$33.25

The base of the original triangle is 12 centimetres.

A triangle is a polygon with three sides. The perimeter of a triangle is 58 cm. The triangle is isosceles.

An isosceles triangle is a triangle with 2 sides equal to each other and two angles equal to each other.

Therefore, let's find the base of the original triangle when the base were lengthened by 4 cm and each leg were shortened by 7 cm,

Hence,

let

x = length of legs

y = length of the base

Therefore,

2x + y = 58

Hence,

y + 4 = x - 7

x - y = 11

2x + y = 58

x - y = 11

3x = 69

x = 69 / 3

x = 23

-y  = 11 - 23

-y = -12

y = 12

Therefore,

base of the original triangle = 12 cm

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The solution for y in the inequality is (a) y ≥ 10

From the question, we have the following inequality expression that can be used in our computation:

42≤4.2y

Rewrite the expression properly

So, we have the following representation

42 ≤ 4.2y

Divide both sides of the inequality by 4.2

So, we have

42/4.2 ≤ 4.2y/4.2

Evaluate the quotients

So, we have the following representation

10 ≤ y

Rewrite the expression as

y ≥ 10

Hence, the solution is y ≥ 10

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Possible question

Solve for y. 42≤4.2y

y ≥ 10 y ≥ -10 y ≤ -10 y ≤ 10

Answer:

5(-4a -7) = -20a -35

Step-by-step explanation:

The distance between us and a star with a parallax angle of 0.1 arcsecond is 3.26 light years.

The distance between us and a star with a parallax angle of 0.01 arcsecond is 326 light years.

The distance between us and a star with a parallax angle of 0.001 arcsecond is 3260 light years.

The distance between us and a star with a parallax angle of 0.0001 arcsecond is 32600 light years.

The distance at which an object has a parallax of 1 arcsecond is known as a parsec. 3.26 light years are about how far this is.

The length of one parsec is 3.26 light years.

One arcsecond is equal to one parsec, which is equal to 3.26 light years.

We determine the other provided arcseconds based on this comparison.

3.26 light years make up a parsec.

0.1 arcsecond = 10 parsec

= 10 * 3.26 light years

= 32.6 light years

0.01 arcsecond = 100 parsec

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Answer: 4 feet of pipe

Step-by-step explanation:

1(f)+1(f)+(2(f)=4(f)

f=feet

Answer:

Step-by-step explanation:

5 1/4

Answer:là

5

với số dư

1

.

5

1

4

Step-by-step explanation:

The answers of all the blanks are as:

a) 3200ft².

b)  8 times.

c) 100ft.

What is the area of the rectangle?

When calculating a rectangle's area, we multiply the length by the width of the rectangle.

we have,

length = 40ft

width = 10ft

Leila's vegetable garden has an area of 400 ft.

a)

new length = 40 * 2 =80ft

new width = 10 * 4 = 40ft

Therefore,  this describes the size of Leila's new garden :

= 80 * 40 = 3200ft²

b)

3200 / 400 = 8

The expansion changes the area of the garden:

The area of the new garden will be 8 times the area of the current garden.

c)

Leila's friend Keiko wants to expand her rectangular garden by 20 times the area of her current garden:

400 * 20 = 8000ft²

Keiko's garden length would be  5 times the current length:

40 * 5 = 80ft

and the new width would be the current width :

new width of Keiko's garden = 8000 / 80 = 100ft.

Hence, the answers of all the blanks are as:

a) 3200ft².

b)  8 times.

c) 100ft.

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Answer:

8700kg

Step-by-step explanation:

b = mass of bricks

l = mass of lorry

b+l = total mass = 11600kg

b = 3l  ==>  l = b/3

substitute: b + b/3 = 11600

multiply every term by 3 to get rid of denominator: 3b + b = 34800

simplify and solve:  4b = 34800  ==>  b = 8700

check:  l = 8700/3 = 2900

2900 + 8700 = 11600?  YES

Answer: -1001, -1002

Step-by-step explanation:

The distance between the two points P(-5, 7) and Q(6, 7) is 11 units.

The distance formula between two points (x₁, y₁) and (x₂, y₂) is,

D = [tex]\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2[/tex].

Two points are given P(-5, 7) and Q(6, 7).

∴ D = [tex]\sqrt{(6 + 5)^2 + (7 - 7)^2[/tex].

D = [tex]\sqrt{(11)^2[/tex].

D = 11 units.

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Answer:

21

Step-by-step explanation:

PEMDAS : Parenthesis, Exponent, Multiplication/Division, Addition/Subtraction.

First, we want to deal with the parenthesis within the parenthesis.

(4.6/2) = 2.3

Rewrite it into the equation.

[3 * 2.3] + 14.1 = ?

Now, do the work in the parenthesis again.

[6.9] + 14.1 = ?

There isn't anymore parenthesis, exponents, or multiplication/division, so we move onto addition now and add both terms.

6.9 + 14.1 = 21

? = 21

The answer is 21.

Answer:

x = 5

TS = 17

QT = 17

Step-by-step explanation:

The tick marks show us that line segment QT is equal to TS.

QS = QT + TS  and QT and TS are the same length

34 = 2(3x + 2)  Distribute the 2

34 = 6x + 4  Subtract 4 from both sides

30 = 6x  Divide both sides by 6

5 = x

Substitute in 5 for x

3x + 2

3(5) + 2

15 + 2 = 17

TS is 17

QT is 17

Answer  :      x= [tex]\sqrt{2wy}[/tex]/ y

Step-by-step explanation:

Answer:

B and D

Step-by-step explanation: I got it right

Answer:

show the choices please.

Step-by-step explanation:

Answer:

see instructions

Step-by-step explanation:

1. (x + 2) = 0  gives us x = -2 = x coordinate of vertex; and

  the -1 at the end gives us the y coordinate.

  Move the vertex of the parabola to the point (-2,-1)

2. The -4 in front of the (x+2)² gives the direction and stretch of the parabola. FROM the Vertex, position the other point Down 4 and Right 1 (at (1,-5)).

Answer:38.5

Step-by-step explanation:

308/8 =38.5

Answer: 8ft

Step-by-step explanation:

the length of the room is 8fr

Answer: 5 days.

Step-by-step explanation: To solve this problem, we first need to convert 1 7/10 bags of tortillas to a decimal number. We can do this by dividing the numerator of the fraction (7) by the denominator (10) and adding the result to the whole number (1) to get 1 + 7/10 = 1.7 bags of tortillas.

Next, we can divide the number of bags of tortillas that Garrett's burrito stand uses per day (1.7 bags) into the total number of bags of tortillas that are available (8.5 bags) to find out how many days the tortillas will last: 8.5 bags / 1.7 bags/day = 5 days

Therefore, the 8 1/2 bags of tortillas will last for 5 days.

Answer:

Step-by-step explanation:

5 is D

6 is also D

Correct answer is:

27

Answer:

There would be 27 ounces of flour

Step-by-step explanation:

The ratio is 7:3 for sugar to flour.

I divided the 63 ounces of sugar by 7 to earn 9

Now, I multiplied 9 by 3 to get 27

Now thee ratio is 63:27

If you divide 7 and 3 you will get 2.3 repeating

If you divide 63 and 27 you will also get 2.3 repeating

Hope that makes sense! ;)

The probability of advancing five spaces is 3/13 and the odds against is 13 : 6

The board game

From the question, we have the odds to be

Odds in favour = 3/10

This can be rewritten as

Odds in favour = 3 : 10

For an odd represented as a : b, the probability is

Probability = a/a + b

Using the above as a guide, we have

Probability = 3/13

The box of candies

From the question, we have the probability to be

Probability = 6/19

For a probability represented as a/b, the odds against is

Odds = b - a : a

Using the above as a guide, we have

Odds = 19 - 6: 6

Evaluate

Odds = 13 : 6

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The time taken by the ball to hit the ground is 9 seconds in quadratic equation .

What does quartic equation mean?

A fourth-degree equation, also known as a quartic equation, is one that reduces a quartic polynomial to zero and has the formula: where a 0. A quartic function's derivative is a cubic function.

a) The maximum height of the ball can be obtained by differentiating the given quadratic function, h = -16t² + 136t + 72.

          Differentiating both sides.

    δh/δt = -32t + 136

    -32t + 136    = 0

or, t = 136/32 = 4.5.

To check whether the value of h is maximum/minimum at t = 4.5, we differentiate

               δh/δt = -32t + 136

                 δh/δt = -32

which is < 0, which that implies, h is maximum at t = 4.5.

        the maximum height, by putting in t = 4.5, in the equation, to get:

h = -16(4.5)² + 136(4.5) + 72,

or, h = -16(20.25) + 612 + 72,

or, h = -324 + 684 = 360

Therefore, The maximum height of the ball is 360 feet.

b) the quadratic function h = -16t² + 136t + 72, as the height of the ball at the ground is 0.

Therefore, it can be written as:

0 = -16t² + 136t + 72.

or, 16t² - 136t - 72 = 0.

Solving this using the quadratic equation, we get

           t = - ( -136)± √(-136)² - 4( 16 ) ( -72)/2 * 16

           t =  136 ± √18496 + 4608/32

            t = 136 ± √23104/32

             t = 136 ± 52/32

Therefore, either t = (136+152)/32 = 9,

or, t  (136 - 152)/32 = -0.5.

Since t represents time, we won't take the negative value, and hence t = 9.

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Answer:

fourteen-sixteenths or  seven eights = 7/8 or 14/16

Step-by-step explanation: