Please help me with this math problem!! Will give brainliest if correct!! :)

Answer:

they're are just both different numbers on the coordinate plane. Simple.

Step-by-step explanation:

Answer:

       a = 3

        b = 4

Step-by-step explanation:

Simultaneous equation

              3a = 2b + 1

         3a - 2b = 1  ------------------(I)

               3b  = 5a - 3

       -5a + 3b = -3 --------------(II)

Multiply equation (I) by 3  & equation (II) by  2 and then add. So, now 'b' will be eliminated and we can find the value of 'a'.

(I)*3       9a - 6b = 3

(II)*2    -10a + 6b = -6  {Now add}

            -a            = -3

                       a = -3/(-1)

        [tex]\sf \boxed{a = 3}[/tex]

Plugin a = 3 in equation (I)

              3*3 - 2b = 1

                  9 - 2b = 1

                     -2b  = 1 - 9   {Subtracting 9 from both sides}

                      -2b = - 8        

                         b = (-8)/(-2)         {Dividing both sides by (-2_}

          [tex]\sf \boxed{b = 4}[/tex]                      

Answer:

  (a, b) = (3, 4)

Step-by-step explanation:

In order to eliminate one of the variables in this system of equations, both equations need to be multiplied by different numbers before they are added or subtracted. We can eliminate the 'b' variable by subtracting 3 times the first equation from 2 times the second. (Putting the 'b' terms on the same side of the equal sign makes this easier.)

__

  2(3b) -3(2b +1) = 2(5a -3) -3(3a)

  6b -6b -3 = 10a -6 -9a

  3 = a . . . . . . . add 6 and collect terms

  3b = 5(3) -3 . . . . use the second equation to find b from a

  b = 4 . . . . . . . divide by 3

The solution is (a, b) = (3, 4).

_____

The multiplier used in each case is the coefficient of the variable in the other equation. The two equations have 'b' coefficients of 2 and 3, so we multiplied the equations by 3 and 2 before subtracting. That makes the 6b terms cancel, leaving only terms with the 'a' variable.

By swapping sides of the equation the way we did, the 'a' terms end up on the same side of the equal sign, which is where we want them. Likewise, the 'b' terms end up on the same side of the equal sign, so their cancellation is easier to see.

Answer:

Find the rectangle's area on the left hand side, using the formula:

A = l x w

Where 'l' represents the length and 'w' stands for the width.

Plug in what you know:-

A = l x w

A = 15 x 5

A = 75 square units is the area of the left rectangle.

Now let's find the rectangle's area on the right hand side, using the formula:

A = l x w

Where 'l' represents the length and 'w' stands for the width.

A = l x w

A = 15 x 4

A = 60 square units is the area of the right rectangle.

Now find the middle small horizontal rectangle's area, using the formula:

A = l x w

Where 'l' represents the length and 'w' stands for the width.

But, let's figure out the length first.

We know that from the left rectangle, the two side lengths beside the unknown length of the middle rectangle area 5 and 7.

The unknown length plus those two lengths (5&7) will have to equal 15 since that is the total length, so;

15 - (5 + 7) = x

15 - 12 = x

3 = x, so the unknown length of the middle rectangle is 3.

Plug in what you know into the formula:

A = l x w

A = 3 x 7

A = 21 square units is the area of the middle rectangle.
Now add up all the areas together:

75 + 60 + 21

= 156 square units is the area of the shape.

Answer:

11 Cups

Step-by-step explanation:

Carlos used 3 pints of lemon juice and 5 times more water than lemon juice. So, he uses 3 x 5 = 15 pints of water for the lemonade. The amount of lemonade is 15 + 3 = 18 pints. Now he pours it equally into 4 jugs which makes it 18 ÷ 4 = 4.5 pints in each jug. Now 1 pint fills 2.4 cups which means 4.5 pints will fill 4.5 x 2.4 = 10.8 cups which will apprroximately be 11 cups.

Answer:

5[4 - 7x]

Step-by-step explanation:

Given expression:

20 - 35x

To factorize the expression, we need to determine the GCF of the terms.

Since "5" is the largest factor in both terms, the GCF is 5.

Factorize the expression using the GCF:

Thus, 5[4 - 7x] is equivalent to 20 - 35x.

Answer: Ava doesn’t have sufficient evidence to reject the fast-food chains claim.

Step-by-step explanation: I got it right on the quiz lol

Ava doesn’t have sufficient evidence to reject the fast-food chain's claim that option (C) is correct.

Statistics is a mathematical tool defined as the study of collecting data, analysis, understanding, representation, and organization. Statistics is described as the procedure of collecting data, classifying it, displaying that in a way that makes it easy to understand, and analyzing it even further.

It is given that:

A fast-food chain claims one small order of its tater tots weighs 90 grams.

She weighs the next 14 random orders of tater tots before she eats them.

The sample mean X = 89.3 grams

The standard deviation SD = 3.71 grams

Z = (u - X)/sd

Z = (90 - 89.3)/3.71

Z = 0.18

Thus, Ava doesn’t have sufficient evidence to reject the fast-food chain's claim that option (C) is correct.

Learn more about the statistics here:

brainly.com/question/8058700

#SPJ5

Answer:

p = 34d * k - 6000d

Step-by-step explanation:

profit equals to the number of skates sold that number - the rent for the building

Answer:

0 ≤ x < 1.12 and 34.18 < x ≤ 39.87

Step-by-step explanation:

Not my answer Props to this guys: https://brainly.com/question/14438192

Answer:

Jill had $250 in her paycheck

Step-by-step explanation:

150+12.49+28.89+12.95

+44.67=249 technically not 250 but its the closest answer.

Answer:

D

Step-by-step explanation:

1/5 = 20%

3/10 = 30%

15%<35%

30%<35%

20%<35%

Answer:

Option. C

Step-by-step explanation:

A and C are the two points of tangencies on sphere

There are two tangents to the sphere in the figure. Option C. is the correct option

A and C are the two points of tangencies of respective tangents that makes a perpendicular to the centre of the sphere of 'O' point ( lined on a plane circle of sphere ).

Answer: B

Step-by-step explanation:

[tex]y\geq 2x-5[/tex]

This is because the equation of the line is y=2x-5, and the y-values have to be greater, so it is >, and since the line is not dotted, it would become greater than or equal to.

Answer:

in photo

Step-by-step explanation:

ur welcome fellow human

Answer:

Mean: 10.5

Median: 6.5

Step-by-step explanation:

To find mean, find the sum of all of the numbers, then divide the sum by how many numbers there are in the data set.

8 + 7 + 6 + 3 + 47 + 7 + 4 + 2 = 84

84 ÷ 8 = 10.5

To find the median, list the numbers in order from least to greatest, then take one number off from each end of the data set until you get to the middle.

2, 3, 4, 6, 7, 7, 8, 47

In the middle lie numbers 6 and 7. To get the median, find the sum, then divide it by 2.

6 + 7 = 13

13 ÷ 2 = 6.5

hope this helps!

3Answer: 1305yard²

Step-by-step explanation:

Area is length multiplied by the width

29 × 45 =

Answer: $126

Step-by-step explanation: 30/100 × 420/1

Answer: ( -1, 5 )

Step-by-step explanation: Reflection across the x axis only flips the sign of the y axis

Answer:

$1.62

Step-by-step explanation:

Penny = 1 cent

Dime = 10 cents

10 x 15 = 150 + 12 = 162

Answer:

The last option morgan didn't distribute the negative sign

Answer:

1316 students

Step-by-step explanation:

to find the answer to this question you simply multiply the number of students in each classroom 28 people by the number of classrooms 47.

28 (students) X 47 (classrooms) = 1316

Answer:

It's B, because thats where the two points cross

Step-by-step explanation:

Answer:

[tex]\frac{4}{3} \text \ yards\ of\ wire[/tex]

Step-by-step explanation:

She uses 4/5 yards of wire to make 3 necklaces

Then

In Oder to make 1 necklace she use :

[tex]\frac{\left( \frac{4}{5} \right) }{3} =\frac{\frac{4}{5} }{\frac{3}{1} } =\frac{4}{5} \times \frac{1}{3} = \frac{4}{15}\ \ \small\text yards\ of \ wire[/tex]

Now to make to make 5 of the same necklaces she needs :

[tex]\frac{4}{15} \times 5=\frac{4}{15} \times \frac{5}{1} =\frac{20}{15}= \frac{4}{3} \ \ \ \text \ yards\ of\ wire[/tex]

Answer:

I like turtlesion:



Step-by-step explanation:

the answer is easy you take 2 + 2 + 2 + 2 + 2 + 2 + 2 and then you got8 twos so you kind of want to do that and add another number to the 8th and then got 82 there's a step-by-step explanation and this is not actually not the answer I just want to fool around with some people

Answer:

Step-by-step explanation:

To find the equation of the tangent to the given function, you must differentiate the function with respect to 'x'. The derivative (y prime) will give the tangent line at any point along the function. After we find the tangent equation, we let x equal zero which will alow us to find the slope at that point.

Begin by bringing the entire denominator to the top. If not, you'll have to do the quotient rule which is very annoying 99% of the time. You will get:

[tex]y=5(e^{2x} +3)^{-1}[/tex]

With this now, you can use the chain rule twice. Begin by differentiating:

[tex]\frac{dy}{dx} =5\frac{d}{dx} [e^{2x} +3)^{-1}][/tex]

Use the chain rule:

[tex]\frac{dy}{dx} =-5(e^{2x} +3)^{-2}\frac{d}{dx} [e^{2x} +3][/tex]

Use the chain rule again:

[tex]\frac{dy}{dx} =-5(e^{2x} +3)^{-2}[2e^{2x} ][/tex]

Simplify:

[tex]y'=-\frac{10e^{2x} }{(e^{2x}+3)^{2}}[/tex]

Let x = 0 to get:

[tex]y'=-\frac{10}{4^{2}} =-10/16=-5/8=-0.625[/tex]

Answer:

Maddie has 6 cookies

Step-by-step explanation:

Let a symbolise the sugar cookies

so, Jacob has 3a

And Mary has double of Jacob's cookies

Hence,

3a * 2

= 6 cookies

Answer:

$10.60

Step-by-step explanation:

6.8% = .068

.068 x 9.95

0.64675

since this is money

$.65

$9.95 + $.65

$10.60

Answer:

D. Keep track of the number of heads flipped in 50 flips. These represent the number of females born today. Repeat this 200 times.

Step-by-step explanation: