Read the problem and answer the questions show your solution when necessary. ​

Read The Problem And Answer The Questions Show Your Solution When Necessary.

Answers

Answer 1

Answer:

Step-by-step explanation:

1) Number of white chocolate bars = x

Number of dark chocolate bars = y

Total bars = 15

x + y = 15 --------------(I)

Total cost = Php. 340

20x + 25y = 340 ----------------(II)

2)  We can use elimination method to solve this equations.

Multiply equation (I) by (-20) and then add the equations.

(I)* (-20)          -20x  -20y = - 300

(II)                    20x + 25y = 340     {Now add and x will be eliminated}

                                  5y = 40

                                    y = 40/5

y = 8

Substitute y = 8 in equation (I)

x + 8 = 15

      x = 15 - 8

x = 7

3) Number of dark chocolate bars = 8


Related Questions

Plz help with these 3:)

Answers

Answer: 1) 2

2) 7/10

3) -1/3

Can anyone help me with this please :( ?


Don’t answer if you do not know.
I will mark you as a brainliest:) !

Answers

Answer:

y=200x

Step-by-step explanation:

the y intercept is 0 so it does not need to be added

the line rises 200 every time

don´t really know how else to explain hope this helps

The objective when solving an equation is to....

Answers

Answer:

to get the variable by itself on one side of the equation and a number on the other side of the equation. To isolate the variable, you have to reverse the operations acting on the variable.

Step-by-step explanation:

what is 0.375 as a fraction

Answers

Answer:

3/8 because 1/8 is .125 multiply by 3 and u get .375 aka 3/8

Jeremy is packaging a stew into to-go containers. There are 5 3/4 cups of stew that need to be put into 5 to-go containers equally. How many cups of stew will be in each container?

Answers

Answer:

1 3/20

Step-by-step explanation:

5 3/4 divided by 5

5 3/4 divided by 5/1

5x4+3=23

23/4 divided by 5/1

Keep Change Flip

23/4 x 1/5

23 x 1=23

4   x 5=20

23/20=1 3/20

Express as a trinomial.
(2 – 4)(2x + 3)

Answers

Answer:

-2(2x+3)

Step-by-step explanation:

Answer:

-2 (2x + 3)

Step-by-step explanation:

We need to use FOIL

Multiply the FIRST terms of each set together

Then the OUTSIDE terms

Then the INSIDE terms

and then the LAST terms

Thus:

[tex]2*2x = 4x[/tex]

[tex]2*3 = 6[/tex]

[tex]-4*3 = -12[/tex]

[tex]-4*2x = -8x[/tex]

So finally we end up with 4x + 6 - 12 - 8x

Simplifying this gives us -4x - 6

We can then factor out -2 from each factor, giving: -2(2x+3)

Hope this helps!

find the equation in slope-intercept form of the line that passes through the points (-3,4)&(2,-1)

Answers

Answer:

The slope: -1

The y intercept form: (0,1)

If you want it in equation form: y=-x+1

How it looks when Graph-ed:

help please and thank you ​

Answers

All you need to do is that Step-by-step explanation:

Answer:

x=6

Step-by-step explanation:

21x+7=133

subtract 7 from both sides:

21x=126

divide 21 by both sides:

x=6

The length and breadth of rectangular field are 240m and 200m respectively. Find the cost of digging the field at Rs 10 per m^2​

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given

The length of rectangular field = l = 240mThe breadth of rectangular field = w = 200m

We can determine the area of the rectangular field using the equation

[tex]A=wl[/tex]

where

[tex]l[/tex] is the length [tex]w[/tex] is the width

substituting  l = 240m, and  w = 200m in the formula

[tex]A=wl[/tex]

A = 240 × 200

A = 48000 m²

Given that the cost of digging the field at Rs 10 per m².

Thus,

The cost of digging the field of the area 48000 m² = 10 × 48000

                                                                                     = 480000 Rs

Therefore, the total cost of digging = 480000 Rs

Ali was asked to simplify the expression 3(x - 6) + (4x + 12) - 6x. His work is shown below.


3(x - 6) + (4x + 12) - 6x

3x - 9 + 4x + 12 - 6x

(3x + 4x - 6x) + (-9 + 12)

x + 3

Answers

Answer:

Step 2 is wrong.

It should be 3x – 18 + 4x + 12 – 6x

Explanation:

3(x – 6) + (4x + 12) – 6x →

3x – 18 + 4x + 12 – 6x →

(3x + 4x – 6x) + (-18 + 12) →

x – 6

Please help me if your good at math I’m really struggling

Select the table representing a linear function. (Graph them if necessary)

Answers

Answer:

B

Step-by-step explanation:

There are a couple of ways you can go about solving this. The first is plotting all of the points and seeing which one makes a straight line. This is a little bit more time consuming but is great if you blank out and forget how to solve it. The faster way to do it is to see which function is decreasing/increase a constant amount between equal intervals. A increases but by a different amount each time. B decreases by 2 each time. C decreases at different intervals each time. And D does not consistently increase or decrease.

URGENT!! PLEASE HELP 30 POINTS! FAKE ANSWERS REPORTED

Answers

Answer:

X=1÷2,Y=32°

Step-by-step explanation:

in right angled traingleRST

<R+<T<S=180(INTERIOR ANGLE OF TRAINGLE)

Y-2+90+60=180(S=60°BEING ONE ANGLE OF EQUILATERAL TRAINGLE)

Y+148=180

Y=180-148=32

NOW,

UT=5X(RT BISECTS TS AND UT EQUALLY)

RU=US(SIDE OF EQUILITERAL TRAINGLE IS EQUAL)

8X+1=UT+TS

8X+1=5X+5X

1=10X-8X

1=2X

X=1/2

Instructions
Solve each problem by finding the area,
A new arrow needs to be painted on the road to direct traffic.
What shapes can the figure be broken into?
What is the area of the arrow?
I
7 ft
1 ft
2 ft
11 ft

Answers

Answer:

The arrow can be broken into a rectangle and a triangle.

And the area of the arrow is 22 ft^2

Step-by-step explanation:

Area of the rectangle:

length • width = 7 • 2 = 14 ft^2

Area of the triangle:

(base • height) / 2

You must add 1 + 2 + 1 in order to get the base which is 4

And to get the height, you must do 11 - 7 = 4 (height)

(4 • 4) / 2 = 8 ft^2

Add both areas together to get the area of the arrow:

14 ft^2 + 8 ft^2 = 22 ft^2

Hope this helps!

Which model shows 0.32 shaded?
A
B
C
D

Answers

Answer:D

Step-by-step explanation:

Because it has 32 blocks shaded in

HELP THIS IS WORTH 100 POINTS WILL MARK BRAINLIEST

Answers

Try VTR, My explanation for this answer is the question is asking to name three points on plane B and the first three options go off the B plane and if you look the last option is the only one that stays in the B plane

Answer:

I cant see it

Step-by-step explanation:

please answer this:
3n + 2 = 17

Answers

n=5. Because you subtract 2 from each side. Then you divide 3 on both sides.
The answer is n=5
This is because n is asking 3 times what equals 15. And 3x5=15
3(5)+2=17
15+2=17
17=17
This answer is true
Hope this helps have a good day!! :)))

for each system, determine whether the given ordered pair is a solution (help fast)​

Answers

(3,1 ) is a solution

X+Y=4

X-Y=2

X=4-y

4-y-y=-2

4-2y=-2

-2y=-2

y=1

X+1=4

X=4-1

X=3

Help please due now

Answers

Answer:

The equation is;

y = -2x + 1

the answer belonging in the green question mark is -2

Step-by-step explanation:

We start by getting the slope

The slope can be obtained by selecting any two points and applying the slope formula

let us select the points;

(1,-1) and (3,-5)

the slope formula is;

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

m = (-5-(-1)/(3-1)

m = (-5+1)/2 = -4/2 = -2

The y intercept is the value of y when x = 0

As it can be seen, y = 1 when x = 0

so the equation of the relation is;

y = -2x + 1

The time (t) required to finish a certain job is inversely
proportional to the number of persons (p) on the job. If 10
persons can finish the job in 6 hours, how long will it take
for 30 persons to finish the job?​

Answers

18 hours

Step-by-step explanation:

6/10=0.6 hours (one person takes 0.6 hour)

0.6×30=18 hours

or another way 10 is 1/3 of 30. so

6:1/3=18

Triangle DEF is a right triangle. The length of the legs are 7 cm and 10 cm, how long is the hypotenuse? Round to the nearest tenth if possible.
A.
7.1 unit
B.
9.0 units
C.
12.2 units
D.
17.0 units

Answers

Answer:

C

Step-by-step explanation:

Answer:

C. 12.2

Step-by-step explanation:

7^2 + 10^ = 49 + 100

Square root of 149 = 12.2

What is the value of 5k + m when k = -3 and m = -9

A. -60
B. -30
C. -24
D. -6​

Answers

Answer:

-24

Step-by-step explanation:

5(-3) + -9 =

-15 + -9 =

-24

c

5×-3+-9

15+9=24

i think

solve eight and two fourths minus three and one third

Answers

Answer:

5 1/6

Step-by-step explanation:

Rewriting our equation with parts separated

=8+2/4−3−1/3

Solving the whole number parts

8−3=5

Solving the fraction parts

2/4−1/3=?

Find the LCD of 2/4 and 1/3 and rewrite to solve with the equivalent fractions.

LCD = 12

6/12−4/12=2/12

Reducing the fraction part, 2/12,

2/12=1/6

Combining the whole and fraction parts

5+1/6=5 1/6

factor using x method and foil to prove

Answers

Answer:
Step by step:

GIVING 50 POINTS IF YOU CAN ANSWER THIS PROPERLY - Given the following system of inequalities graph, which of these pairs of linear inequalities is correct?

Answers

Answer: its c

Step-by-step explanation: because when ur graphing the inequality the variable is on the opposite side

if £2000 is placed into a bank account that pays 3% compound interest per year how much will be in account after 2 years?

Answers

Answer:

£2121.80

Step-by-step explanation:

Year 1 -> 2000 + (3% of 2000) = 2000 + (60) = 2060

Year 2 -> 2060 + (3% of 2060) = 2060 + (61.80) = 2121.80

What graph is (-5, 0)?

Answers

5 is your X point and 0 is your Y point. Find positive 5 on the horizontal line. is that what you needed ?

Need this ASAP!! Would help if you could answer as quick as possible :)

Answers

Answer:

-32p +56

Step-by-step explanation:

distribute the 8 to everything in the parenthesis

Please help me with my homework please

Answers

Answer:

a) Speed of the cyclist is (2.75/0.4) = 6.875 miles per hour.

b) It will take (5.5/6.875) = 0.8 hours to travel 5.5 miles at this rate.

Remember: Speed=Distance/Time

What is the image of (3,-7) after a reflection over the line y =x

Answers

Answer:

Image: (-7,3)

Step-by-step explanation:

Reflections In The Coordinate Plane

Reflect over the line y = x:

When reflecting a point across the line y = x, the x-coordinate, and y-coordinate change places.

Thus, the point (3,-7) maps to the point (-7,3) when reflected over y=x.

Please help Find x

Answers

Answer:  x = 12

====================================================

Explanation:

The hexagon is broken up into 6 congruent or identical equilateral triangles. If we find the area of one triangle, then we multiply by 6 to get the area of the hexagon.

Going in reverse, we divide the hexagon's area by 6 to get the area of one equilateral triangle

We're told the hexagon has an area of [tex]18\sqrt{3}[/tex] square inches. Divide this by 6 and you should get the result [tex]3\sqrt{3}[/tex]. So each of the six equilateral triangles has area of [tex]3\sqrt{3}[/tex] square inches.

-------------------------------------

Each triangle has a base of [tex]2(\sqrt{3})^{x/12}[/tex] and a height of [tex](\sqrt{3})^{x/6}[/tex]

The x/12 and x/6 are exponents.

Let [tex]b = 2(\sqrt{3})^{x/12}[/tex] and [tex]h = (\sqrt{3})^{x/6}[/tex] be the base and height respectively.

Also, let [tex]A = 3\sqrt{3}[/tex] be the area of the triangle

We can then solve for x like so:

[tex]A = 0.5*b*h\\\\3\sqrt{3} = 0.5*2(\sqrt{3})^{x/12}*(\sqrt{3})^{x/6}\\\\3*3^{1/2} = (\sqrt{3})^{x/12+x/6}\\\\3^1*3^{1/2} = (\sqrt{3})^{x/12+2x/12}\\\\3^{1+1/2} = (\sqrt{3})^{3x/12}\\\\3^{3/2} = (3^{1/2})^{x/4}\\\\3^{3/2} = 3^{(1/2)*(x/4)}\\\\3^{3/2} = 3^{x/8}\\\\[/tex]

Since the bases are equal to 3, this means the exponents must be equal as well (for both sides overall to be equal)

3/2 = x/8

3*8 = 2*x ... cross multiply

24 = 2x

2x = 24

x = 24/2

x = 12

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