For each ordered pair, determine whether it is a solution to the system of equations. y=-2x-5 6x+3y=-15 Is it a solution? ? (x, y) Yes No (-3, 1) (4, -13) (2,7) (5,0)​

Given :

Kiara spent $28 on 4 ribbons and 5 balloons.

Sarah spent $28 on 8 ribbons and 3 balloons.

To Find :

The cost of each ribbon and each balloon.

Solution :

Let, cost of each ribbon is x and balloon is y.

For situation 1 :

4x + 5y = 28     ...1)

For situation 2 :

8x + 3y = 28    ...2)

Multiplying equation 1) by 2 and subtracting equation 2) by it :

2( 4x + 5y ) - ( 8x + 3y ) = 2 × 28 - 28

10y - 3y = 28

y = 4

Putting value of y in equation 1) , we get :

[tex]x = \dfrac{28-(5\times 4)}{4}\\\\x = 2[/tex]

Therefore, the cost of each ribbon and each balloon is $2 and $4 respectively.

Answer:

when you ask multiple questions at once, it feels more like i'm doing your HW for you, not that i'm  helping you understand , i'll answer these but you really should have been able to do these if you really did all the others.  Did you just get tired out?  Why can't you do 4, 6, 8?  what is it that you don't understand?

Step-by-step explanation:

4)   old price = 120   to new price = 240

they ask what is the percent change

How much is the change ( in amount )

the "How much is obvious right?  Old price 120 , new price 240.. change is $120

the percent is   change / old price = 120 / 120  = 1  and to put it in percent , multiply by 100 , so 100 % change

6) old price = 250   amount of change -100

so what percent of 250 is 100  

100 / 250 = 0.4   to get it in percent multiply by 100  = 40%

  old price + change = new price

250 +  ( -100)  =  150   new price is $150

8) 5% mark up  , amount of change = $2.50

so 5% of what = 2.50 ?

X* 5% = 2.5

X* 0.05 = 2.5

X=2.5/0.05

X= $50  was the old price

old price + amount change = new price

50 + 2.50 = 52.50

$52.50 is the new price

Answer:

[tex]753491[/tex]

Step-by-step explanation:

1) Subtract 78 + 13 to 91.

[tex] {91}^{3} - 8 \times 10[/tex]

2) Simplify 91³ to 753571.

[tex]753571 - 8 \times 10[/tex]

3) Simplify 8 × 10 to 80.

[tex]753571 - 80[/tex]

4) Simplify.

[tex]753491[/tex]

Therefor, the answer is 753491.

Answer:

The circumference is 81.64cm

Step-by-step explanation:

Circumference of a circle=2×3.14×radius

2×3.14×13=81.64

I hope this helps you in any way :)

Answer:

3 is the quotient and 5 is the remainder

Step-by-step explanation:

Answer:

3 with a remainder of 5

Step-by-step explanation:

26-0=26-21=5

Answer:

y = 1.5x - 1 or y = 1 1/2x - 1 or y = 3/2x - 1

Step-by-step explanation:

y = mx + b

b is the point on the y

y = -1

so

b = -1

now the slope

m = rise/run

m = 3/2

so

y = 1.5x - 1

Plz mark as brainliest if correct!!!

Answer:

y=3/2x-1

Step-by-step explanation:

slope:3/2

y-intercept:-1

y=3/2x-1

Hopes this helps you!!!

Have a great day!!!!!

Answer:

60

step-by-step explanation:

Answer: 60

Step-by-step explanation: Basically just multiply the whole number by 2 :)

Whenever you see something times 0.5, just know that its going to be that number times 2 (like another half of that number if you understand)

Why? Because 0.5 is basically like a one half (1/2) and you flip the stuff. since 0.5 is a half, here's a tip. Whenever you're dividing with decimals, use the formula KCF (keep, change, flip) (what my teacher taught me before)          

Here's a drawing to better explain:

Answer:

Area = 68.75 ft²

Step-by-step explanation:

Area of the trapezoid = ½(a + b)*h

Where,

a = 13.6 ft + 5.9 ft = 19.5 ft

b = 8 ft

h = 5 ft

Area of trapezoid = ½(19.5 + 8)*5

Area of trapezoid = ½(27.5)*5

Area = 68.75 ft²

Answer:

2.................

Step-by-step explanation:

......................…....

Answer:

2 weeks

Step-by-step explanation:

Each week is 7 days

Answer:

99

= 11 × 9

= 11 × 3 × 3 ----- 99 as the product of its prime factors.

Answer: 99

= 11 × 9

= 11 × 3 × 3 ----- 99 as the product of its prime factors.

Answer:

D. 5.32 cubic units

Step-by-step explanation:

Volume of a cone = ⅓πr²h

Radius (r) = 1.52 units

Height (h) = 2.2 units

π = 3.14

Substitute

Volume = ⅓*3.14*1.52²*2.2

Volume = 5.32 cubic units

Answer:

D. 5.32 cubic units

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Use slope formula:

m = (y2 - y1) / (x2 - x1)

m = (-2 - 1) / (-3 - 1)

m = -3/-4

Negative + Negative = Positive

m = 3/4

Step-by-step explanation:

(1/4)^3

the cube root goes for the top part of the fraction and the bottom part of the fraction

((1^3)/(4^3))

4x4x4=64

so the answer is 1/64

Hope that helps :)

Answer:

Standard Form:

23,958

Expanded forms can be written like a sentence or stacked for readability as they are here.

Expanded Notation Form:

23,958 =

20,000

+ 3,000

+ 900

+ 50

+ 8

Expanded Factors Form:

23,958 =

2 × 10,000

+ 3 × 1,000

+ 9 × 100

+ 5 × 10

+ 8 × 1

Expanded Exponential Form:

23,958 =

2 × 104

+ 3 × 103

+ 9 × 102

+ 5 × 101

+ 8 × 100

Word Form:

23,958 =

twenty-three thousand nine hundred fifty-eight

Answer:

It a ez thing Hope help yayyy pls brainliest bro I helped you

Step-by-step explanation:

Answer:

Exponential

Step-by-step explanation:

Using the linear function formula for x,y

[tex] y = mx + b[/tex]

where m is the slope and y is the y intercept.

Using the exponential function for x and y

[tex]y = ab {}^{x} [/tex]

where a is the initial value, b is the factor.

We would plug the follow x and y values into the table to see if it true for all of the other x and y values.

To keep thing short, linear function is not the answer becuase the function doesnt Maintain a consistent average rate of change so it cant be that.

Let see if it a exponential function.

plug in 0 and -2 into exponetial formula

[tex] - 2 = ab {}^{0} [/tex]

[tex] - 2 = a[/tex]

Now, let use another pair of point to see if this is true.

[tex]y = - 2b {}^{x} [/tex]

Use 1 and -6

[tex] - 6= - 2b {}^{1} [/tex]

[tex]3 = b {}^{1} [/tex]

Our exponetial equation is

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

Let plug in -2,18 to see if it true.

[tex] - 18 = - 2(3) {}^{2} [/tex]

[tex] - 18 = - 2 \times 9[/tex]

[tex] - 18 = - 18[/tex]

so it is exponential

Answer:

(a) 3.025

Step-by-step explanation:

The computation is shown below:

In the case when Abishola acheives all As in the senior year, so the final GPA  Is  

The net GPA is 3

So,

(2.7 × 90 + 30 × x) ÷ 120 = 3

30x = (360 - 2.7 × 90)

x = (360  - 2.7 × 90) ÷ (30)

= 3.9

As she can score till 4 so 3.9 could be possible  

In the case when she score 4 on her final year so her GPA is  

= (2.7 × 90 + 30 × 4) ÷ 120

= 3.025

Answer:

Because each side counts up to 60 mybe

Answer:

The answer is B

Step-by-step explanation:

Answer and Step-by-step explanation:

Side AD is congruent to side AC by the angle bisector theorem.

Angle A is congruent to angle C.

Side AB is congruent to side BC by the angle bisector theorem.

Triangle BAD is congruent to triangle BCD by SAS congruence theorem.

#teamtrees #WAP (Water And Plant)

Tangents AB and AD are equal to each other. So, the value of the variable [tex]x[/tex] is 5.

Important information:

If two tangents are drawn on a circle from an external point, then the lengths of the tangents are equal.

In the given figure,

[tex]AB=AD[/tex]

[tex]2x+7=5x-8[/tex]

[tex]2x-5x=-7-8[/tex]

[tex]-3x=-15[/tex]

Divide both sides by -3.

[tex]x=5[/tex]

Therefore, the value of [tex]x[/tex] is 5.

Find out more about 'Tangent' here:

https://brainly.com/question/21864072

Answer:

837.67.

Step-by-step explanation:

Answer:

is that an exponent?

Step-by-step explanation:

Answer:

i keep getting 52 - srry

Step-by-step explanation:

Answer:

(b) 4x² and 3xy

Step-by-step explanation:

The terms of an expression 4x² – 3xy are:

The terms are the factors of the expression, which are 4x² and -3xy. The signal is not counted as a term. So the correct answer is given by option b.

Answer:

~100.48

Step-by-step explanation:

To find the circumference of a pool, you follow the formula of C=πd. This just means that you need to multiply pi (I rounded it to 3.14) by your diameter, which would be 32 in this case. Once you multiply the two together, you should get a circumference that is roughly 100.48. My work is below!

3.14 x 32 = 100.48

Answer:

51.2

Step-by-step explanation:

Answer:

51.2

Step-by-step explanation:

you make a fraction equals this thing:

12.8          25

- --        =      - ---

x                100

12.8*100= 1,280

1,280/25=51.2

the answer is 51.2