3(5m
4) - 4(2m + 10)

Answer:

20

Step-by-step explanation:

3x+15=4x-5

3x+15-15=4x-5-15

To solve system of equations by substitution, we are going to use the first equation to substitute into the second equation wherever you see y.

[tex]5x - 4y = -3[/tex]

[tex]5x - 4(3x-5) = -3[/tex]

[tex]5x -12x+20=-3[/tex]

               [tex]-20[/tex]     [tex]-20[/tex]  

_______________

[tex]5x-12x=-23[/tex]

[tex]-7x=-23[/tex]

___    ____

 [tex]-7[/tex]       [tex]-7[/tex]

[tex]x=3.29[/tex] (rounded)

Next, substitute x = 3.29 into the first equation, or to any equation you'd like, to find y.

[tex]y = 3x-5[/tex]

[tex]y = 3(3.29)-5[/tex]

[tex]y = 9.87-5[/tex]

[tex]y = 4.87[/tex]

So, your final answer would be (3.29, 4.87).

Answer:

it is your answer...... if it is helpful plzz like ans comment

Answer:

This doesn’t add up because the hypotenuse is supposed to be the longest side

Step-by-step explanation:

Answer:

460 pounds.

Step-by-step explanation:

5% of 2,300 is 115. Since it is in there for four years, you multiply 115 by 4 to get 460.

Answer:

45

Step-by-step explanation:

angle E is 115

angle C and B 20 degrees

180 - 135= 45

Answer:

power = work/ time

2hrs = 60×2 seconds = 120s

power = 1987/120

= 16.5 watt

Answer:

One of the limitations of using the range is that it is a simple but poor measure of variability. It is very susceptible to poor representation of data spread.  It is used mostly with ordered data or ordinal data.                                          

Step-by-step explanation:

The measure of the range of a set of given data can be established once the difference between the highest and lowest values is known.

The range is simple to use but only considers the smallest and largest data elements in the set without considering the middle values and other values that could influence results if the data spread is to be considered.

Ordinal data aren't numerical data. Examples include Time of day such as morning, noon, night.

Answer:

y = 4/3 x + 4

Step-by-step explanation:

The general form of the equation of a line is given as

y = mx + c where m is the slope and c is the intercept on the y axis

where the slope m = (y2 - y1)/(x2 - x1)

Hence given the points  (-6, -4) and (0, 4)

m = (4 --4) / (0 --6)

= (4+4)/(0+6)

= 8/6

= 4/3

For a line with given points (x1, y1), the equation is given as

y-y1 = m(x-x1)

Hence the equation of this line in slope-intercept form

y - -4 = 4/3(x --6)

y + 4 = 4/3(x + 6)

3y + 12 = 4x + 24

3y = 4x + 24 - 12

3y = 4x + 12

y = 4/3 x + 4

For a line with given points (x2, y2), the equation is given as

y-y2 = m(x-x2)

Hence the equation of this line in slope-intercept form

y-4 = 4/3(x - 0)

multiply through by 3

3y - 12 = 4x

3y = 4x + 12

y = 4/3 x + 4

Answer:

A

Step-by-step explanation:

State taxes.

According to Urban dot org, school funding is a blend of federal, state, and local dollars.

State taxes are more likely to be correct due to education being the state's responsibility.

If this is incorrect, please, don't refrain to tell me. Thank you.

answer:

30 > 4x + 2 and 6 books

step-by-step explanation:

30 > 4x + 2

30 > 4x + 2

28 > 4x

7 > x

Answer:

Initial Value: 4

ROC: - 4/5

Step-by-step explanation:

I know you're short on time, if you want an explanation, let me know!

Answer:

Step-by-step explanation:

Answer:

113 square feet

Step-by-step explanation:

Given

[tex]d = 24[/tex] --- diameter

See attachment for complete question

Required

Determine the area of each color

First, we calculate the area of all colors

[tex]Area = \frac{\pi d^2}{4}[/tex]

This gives:

[tex]Area = \frac{22 * 24^2}{7*4}[/tex]

[tex]Area = \frac{12672}{28}[/tex]

[tex]Area = 452.57[/tex]

Since all 4 colors have equal areas, the area of 1 of them is:

[tex]A = \frac{1}{4}Area[/tex]

[tex]A = \frac{1}{4} * 452.57[/tex]

[tex]A = 113.14ft^2[/tex]

[tex]A = 113ft^2[/tex] --- approximated

Answer: D. 136in^2

Step-by-step explanation:

Find the surface area if all sides and add

4*10=40

2*4=8

2*4=8

4*10=40

2*10=20

2*10=20

40+40+8+8+20+20=136

136in^2

Answer:

1 or -0.5±1.9365i

Step-by-step explanation:

We know that [tex]x^{3} - y^{3} = (x-y) ^{3} +3xy(x-y)[/tex]

So plug in x=a and y=1/a, (a-1/a)^3+3*a*1/a*(a-1/a)=4

Let a-1/a=k, k^3+3k=4, k=1 or a complex conjugate -0.5±1.9365i

That's the answer.

Answer:

7 is the answer

Explanation:

because if you use a calculator, by doing 10% of 70 which equals to 7 which that is the answer.

Answer:

B: $63

Step-by-step explanation:

You can make an equation: 70(10%)

    Which can be simplified into 70(0.1)

70×0.1=7

Since it was discounted, you subtract

$70 - $7 = $63

Answer:

42 + 26 = 68

Step-by-step explanation:

Answer:

sin45=y/10

0.707106781186×10=y

y=7.071067811865

tan45=y/X

1×x=7.071067811865

X=7.071067811865

Answer:

I have made it in above picture

Answer:

2

Step-by-step explanation:

Answer:

Per means:

Definition of per (Entry 1 of 4)

1: by the means or agency of : THROUGH

per bearer

2: with respect to every member of a specified group : for each

3: according to —often used with as

per instructions

as per usual

per adverb

Definition of per (Entry 2 of 4)

: for each : APIECE

a bargain at $3.50 per

per abbreviation

Definition of per (Entry 3 of 4)

1period

2person

per- prefix

Definition of per- (Entry 4 of 4)

1: throughout : thoroughly

peruse

2a: containing the largest possible or a relatively large proportion of a (specified) chemical element

perchloroethylene

b: containing an element in its highest or a high oxidation state

perchloric acid

also heres an emodicon!

≧◠‿◠≦✌

Answer:

500+10+0

Step-by-step explanation:

Answer:

5.1 x 102 in scientific notation

Step-by-step explanation:

The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease. Calculating scientific notation for a positive integer is simple, as it always follows this notation: a x 10bStep 1

step1: To find a, take the number and move a decimal place to the right one position.

Original Number: 510

New Number: 5.10

step 2: Now, to find b, count how many places to the right of the decimal.

New Number: 5 . 1 0

Decimal Count:   1 2

Step 3: Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 5.1 (Please notice any zeroes on the end have been removed)

b = 2

Now the whole thing:

5.1 x 102

Step 4:

Check your work:

102 = 100 x 5.1 = 510

Work done = force x distance.

The force is 10N the distance is 10m

Work done = 10 N x 10m = 100 NM = 100 Joules

Answer:

We got a problem here.  What is the unit of measure for 23.6 and are you sure the 5 cm should be 5 m?

Step-by-step explanation:

Answer:

-1 and 4/3

Step-by-step explanation:

Given the quadratic equation;

f(x) = 3x^2-x-4

To get all potential roots, we will equate f(x) = 0

3x^2-x-4 = 0

3x^2-4x+3x-4 = 0

x(3x-4)+1(3x-4) = 0

(x+1)(3x-4) = 0

x+1= 0 and 3x-4 = 0

x = -1 and 3x = 4

x = -1 and x= 4/3

Hence the potential roots are -1 and 4/3