Help! Find the values of x and y

Answer:

The answer is D(t) = 160 - 25t

Step-by-step explanation:

well khan academy said it lol

If David, Malachy and Paul share some sweets in the ratio 4:3:3 then Paul get 7.2 number of sweets

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Given that David, Malachy and Paul share some sweets in the ratio 4:3:3

All three shared 24 sweets together.

Let x be the number of sweets

4x+3x+3x=24

Add the like terms

10x=24

Divide both sides by 10

x=2.4

Now paul has 3x sweets so 3×2.4=7.2

Hence, Paul get 7.2 number of sweets

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Answer:

52

Step-by-step explanation:

140 - 13 = 127

127 - 75 = 52

Check your work:

75 + 13 + 52

= 140

52

Step-by-step explanation:

75 + 13=88

140 - 88=52

75 + 13 + 52=140

hope it helps stay safe and have a good day =D

Answer:

18

Step-by-step explanation:

There is a string that is 3 yards long that is divided into pieces that are 1/6 of yard long.  Divide the total length by the length it was divided into to find the number of pieces.

When dividing with fractions, the second number will be inverted and multiplied by the first number.

3 ÷ (1/6) = 3 × 6 = 18

You will have 18 pieces

Answer:

Percentage: 55%

Decimal: 0.55

Step-by-step explanation:

11÷20=

0.55

[tex]\frac{11}{20}=\frac{55}{100}[/tex]

or 55%

Answer:

-3n+11 or 3n+11 or 3n-11 one of those

Step-by-step explanation:

Answer:

The answer is -3n+12

Step-by-step explanation:

It is because you do 9+3 and it is positive so it will be positive 12 (+12).

We got -3n from taking away -3 all the way.

I hope you got help

Answer:

x = 1

Step-by-step explanation:

Given

3(x - 2) + 2 = 5(x - 3) + 9 ← distribute and simplify both sides

3x - 6 + 2 = 5x - 15 + 9

3x - 4 = 5x - 6 ( subtract 5x from both sides )

- 2x - 4 = - 6 ( add 4 to both sides )

- 2x = - 2 ( divide both sides by - 2 )

x = 1

Answer: $80

Step-by-step explanation:

Let the original price of the refrigerator be represented by y.

We are told that an appliance store reduced the price of a refrigerator by 20%. This will be:

= y - (20% of y)

= y - (20/100 × y)

= y - (0.2 × y)

= y - 0.2y

= 0.8y

We are then told that the store then raised the prices by 10% from the lower price. This will be:

= 0.8y + (10% of 0.8y)

= 0.8y + (0.1 × 0.8y)

= 0.8y + 0.08y

= 0.88y

Since we told that now the price was $70.49, this means that we have to find the value of y using the above expression. This will be:

0.88y = $70.49

y = $70.49/0.88

y = $80.10

y = $80 approximately

The original price of the refrigerator is $80.

Answer:

3x-24

Step-by-step explanation:

because 3x-24 divide both side by co efficient of x which is 3 so 24/3=8

Answer:

2282 divided by 3over7

Answer:

1304

Step-by-step explanation:

2282:7 =326

326 . 3 = 978

2282 - 978 = 1304

Answer:

y =3x - 12

Step-by-step explanation:

I'm fairly certain this is the answer.

Consider the point (3,-3). In terms of variables this is written (x,y).

Remember that the equation for slope is y = mx + b.

In that equation, "b" is your y-intercept, and "m" is your slope.

If 2 lines are parallel, they have the same slope but different y-intercepts. So you can use the slope from the equation y=3x-4 to find the parallel line. You can also plug in the values 3 and -3 to solve for b, our y-intercept.

If we set up the equation, we have -3 = 3(3) + b.

Now solve for b.

-3 = 9 + b

Combine like terms, so that -12 = b, and you have your y-intercept.

To create the equation, take out the coordinate pair that the line passes through, and only have the SLOPE and the Y-INTERCEPT showing in the equation.

Therefore, y = 3x - 12

Answer:

413.03

Step-by-step explanation:

405 increased by 8.3 is 405+8.3.

[tex]405+8.3=\\405+8.0+0.3=\\413+0.3=\\413.03[/tex]

Answer:

413.3 if ADD, 437.5215 if add by percent

Step-by-step explanation:

If it's increaced by 8.3%, then it is 405 + 32.5215 = 437.5215

If it's add 8.3, then it's 413.3.

The length of line segment SR is 15.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

Using Pythagorean theorem.

The sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse

16² + (RT)² = 20²

256 + (RT)² = 400

Subtract 256 on both sides

(RT)² = 144

Take square root on both sides

RT = 12

By using altitude theorem we find ST:

16/12= 12/ST

Apply cross multiplication

16ST = 144

Divide both sides by 16

ST = 9

Using Pythagorean theorem again:

12² + 9² = SR²

144 + 81 = SR²

225 = SR²

Take square root on both sides

SR= 15

Hence, the length of line segment SR is 15.

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Answer:

20 red sweets

Step-by-step explanation:

do two thirds of 30 and the part that cane out is the red sweets

Answer:

12

Step-by-step explanation:

Sum the parts of the ratio, 2 + 3 = 5 parts

Divide the number of sweets by 5 to find the value of one part of the ratio

30 ÷ 5 = 6 sweets ← value of 1 part of the ratio, thus

2 × 6 = 12 ← number of red sweets

Answer:

Third option is the right choice.

Step-by-step explanation:

The intersection point of both lines is [tex](-2, 2)[/tex].

Area of triangle  [tex]\Rightarrow 12.5 = \frac{5\times x}{2}[/tex]

[tex]\Rightarrow x=5[/tex]

This represents the height of the triangle.

So, the y-coordinate of C, will be y-coordinate of point of intersection plus height of triangle.

y = 5+2 = 7

Best Regards!

Answer:2 in. by 3 in

Step-by-step explanation:

only my best guess

Answer:

≈37.7 feet

Step-by-step explanation:

I'm assuming he goes diagonally.

We can form a triangle with legs 20 feet and 32 feet.

Using the Pythagorean Theorem, we get:

[tex]20^2+32^2=c^2\\400+1024=c^2\\1424=c^2\\c^2=1424\\c=\sqrt{1424}\\[/tex]

c≈37.7

Answer: 37.7 ft

Step-by-step explanation:

20^2 + 32^2 = C^2 where c squared is the distance of the diagonal distance that  he wants to walk.

20^2 +32^2 =c^2

400 +1024 =c^2

1424 = c^2

c= 37.7359  rounded to the nearest tenth of a foot is 37.7

Answer:

6

Step-by-step explanation:

rearrange the numbers from smallest to biggest:

-19, -14, -9, -3, 6, 8, 14, 19, 20

the set of data the question requires is the middle data. there are 9 sets of data. the middle data = (9 + 1) ÷ 2 = 5

find the fifth piece of data from the rearranged order.

ans: 6

Answer:

6

Step-by-step explanation:

gotchu G

Answer:

a. p= 36/(m + 1)

b. p = 3

Step-by-step explanation:

If p varies inversely as (m + 1)

then p = k × 1/(m + 1). {Where k is the constant}

when p = 4, m = 8, that means 4 = k/(8 + 1)

4 × 9 = k and k = 36

a. Therefore the equation is p= 36/(m + 1)

b. When m = 11,

p = 36/(11 + 1)

p = 36/12

p = 3

Answer:

The total sum of money is £810

Step-by-step explanation:

The parameters given are;

The ratio of the sum Anne, Becky and Charlotte had = 7:6:5

One of them gave one of the others £9 and the new ratio becomes 6:5:4

The total sum of money remains the same = M

The initial fraction amount of the total sum of money each had is given as follows;

Anne = 7/(7 + 6 + 5)×M = 7/18·M = 0.389·M

Becky = 6/18·m = 1/3·M

Charlotte = 5/18·M = 0.278·M

After one of them gave £9 to one of the others, the fraction amount of the total sum of money each had became;

Anne = 6/(6 + 5 + 4)×M = 6/15·M = 0.4·M

Becky = 5/15·m = 1/3·M

Charlotte = 4/15·M = 0.267·M

Therefore, given that Anne's fraction of the total sum of money increased while Charlotte's fraction of the total sum of money decreased, it was Charlotte that gave Anne £9

Therefore, the fraction of the total sum of money equivalent to £9 is found s follows;

5/18·M - 4/15·M = 1/90·M = £9

Therefore;

M = 90 × £9 = £810

The total sum of money = £810.

Answer:

3

Step-by-step explanation:

If you take the y-intercept of x+2 and the y-intercept of x-1 and graph them, count the number of units in between them and you should see that your answer is 3

Answer:

D) 3 units

Step-by-step explanation:

Answer:

Cost: "N2800"

Step-by-step explanation:

I'm assuming "N200" is "$200"? But I'll just use it as "N200"

Finding the perimeter:

3+3+4+4=

6+8=

14 metres

Finding the cost:

N200×14=

N2800

Answer:

4^8

Step-by-step explanation:

4^5 * 4^3

We know that a^b* a^c = a^(b+c)

4^(5+3)

4^8

Answer:

4

Step-by-step explanation:

The n th term of an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Given

[tex]a_{n}[/tex] = 11 +(n - 1)4 , then

d = 4

The recursive formula allows a term in the sequence to be found by adding d to the previous term, thus

[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + 4

Answer:

The answer is 4

Step-by-step explanation:

Answer:

e can treat 7 friends

Step-by-step explanation:

2f+10=24

2f=24-10=14

f=14/2=7

Answer:

9.31?

Step-by-step explanation:

Answer:

You have an obtuse, scalene triangle, so no :)

Step-by-step explanation:

Side a = 4

Side b = 9

Side c = 7

Angle ∠A = 25.209° = 25°12'32" = 0.43998 rad

Angle ∠B = 106.602° = 106°36'6" = 1.86055 rad

Angle ∠C = 48.19° = 48°11'23" = 0.84107 rad

Answer:

Triangle ABC is not a right-angle triangle.

Step-by-step explanation:

perimeter of the triangle: 20cm

AB=7cm and BC=4cm.

We can do the third length (AC) by subtracting the known lengths from the perimeter: 20 - 7 - 4 = 9

Therefore, the length AC is 9.If

ABC were a right angle triangle, we'd be able to use Pythagoras's Theorem to work out the length AC.

AC is the hypotenuse of the triangle because it is the longest length.

a2 + b2 = c242 + 72 = 16 + 49 = 65

Where AC = c, c2 = 65 If c = 9, then c2 = 81, however when using Pythagoras, c2 = 65.

I hope this helps. I am sorry if you get this wrong.

Answer:

(A⋃B) = I, II, and III (C)

Step-by-step explanation:

Venn diagram is used to demonstrate the relationship between two or three sets. It enables visual organisation of data in a set.

From the information:

Set A = {I}

Set B = {II}

Set A⋂B = {III}

Where ⋂ means intersection.

A⋂B = objects that belong to set A and set B

Objects not belonging to any set = 4

U = Universal set

(A⋃B) means objects that belong to set A or set B

The objects that belong to set A or set B = I, II, and III

(A⋃B) = I, II, and III (C)

Answer:

The answer is C

Step-by-step explanation:

I took the test

Answer:

m < 1 = 80

m < 2 = 70

Step-by-step explanation:

As we can see in the figure that

[tex]a || b[/tex]

Plus line s and t are considered to be transversals

That results into

m < 1 and 80

i.e alternate angles

And as we know that alternative angles are equal to each other

So,

m < 1 = 80

Moreover,

m < 2 = 70

As corresponding angles are equal to each other

Therefore the m < 1 = 80 m < 2 = 70 could be computed easily by applying the above things

Answer:

Slope = m = 4

Step-by-step explanation:

y = 4x-6

Comparing this with the standard slope-intercept equation:

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

Where m is the slope and b is the y-intercept.

So, we get:

Slope = m = 4

Answer:

4

Step-by-step explanation:

The equation of a line has a formula.

y = mx + b

Where m is the slope, and b is the y-intercept.

The equation for this line is given:

y = 4x + - 6

m = 4

b = -6

4 is the slope, and -6 is the y-intercept.