help please i don’t understand

Answer:

So the age of Mr.Jones = 39 yrs. |

the age of his wife = 39-4 = 35 yrs.|

and the age his son = 39-31 = 8 yrs.|

Step-by-step explanation:

Let the age of Mr.Jones = x

So, the age of his wife = x-4 (wife is younger by 4 years)

and the age of his son = x-31 (son is younger by 31 years)

Sum of their ages = x + (x-4) + (x-31) = 82

= x + x - 4 + x - 31 = 82 (By removing the brackets)

= 3x - 35 = 82

= 3x = 117 (By adding 35 both the sides)

= x = [tex]\frac{117}{3}[/tex]= 39

Answer:

1 solution

Step-by-step explanation:

To find this out you can just solve the equation so if you simplify you get

2+6x-24=3x

-3x=-22

x=22/3

so one solution

Answer:

A is No.

B is Yes.

C is Yes.

D is No.

Answer:

Step-by-step explanation:

For A ) yes

B) yes

C) no

D) Yes

Use the formula for mid,

mid(x, y)=((X_1  + X_2)/2,(Y_1+Y_2)/2)

Answer:

6 litres of blue color should be mixed.

Step-by-step explanation:

To get the paint color as per my wish, paint of different colors are mixed in the ratio = Red : Cream : Blue

              = 2 : 1 : 3

In this mixture, ratio of red and blue color = 3 : 2

This ratio will be constant for any amount of mixture.

Therefore, [tex]\frac{\text{Amount of Blue color}}{\text{Amount of red color}}=\frac{3}{2}[/tex]

[tex]\frac{b}{4}=\frac{3}{2}[/tex]

b = [tex]\frac{3}{2}\times 4[/tex]

b = 6 litres

Therefore, 6 litres of blue color should be mixed with the 4 litres of red color.

Answer:

x = 61°

Step-by-step explanation:

Since the lower left angle equals to 90°, the other angle on the right must also equal 90°.  Subtract 29 from 90° to get 61° as your x value and as your final angle answer.

Answer:

61°

Step-by-step explanation:

The dotted angke is a right angle which is 90° so,

We can solve for x using algebra

90+x+29=180

x+119=180

x=180-119

x=61

Answer:

(81x+13)

Step-by-step explanation:

Answer: ??????

Step-by-step explanation:

Answer:

y = 6

Step-by-step explanation:

6 * y * 4 = 2 * 72

y = 2 * 72/24 = 6

6xy × 4 = 2 × 72

or, 6xy = 2 × 72/4

or, 6xy = 36

or, xy = 6

6 = 3 × 2 × 1

Hence, x = 3 and y = 2

or, x = 2 and y = 3

or, x = 6 and y = 1

or, x = 1 and y = 6

Answer:

das easy : 2

Step-by-step explanation:

It is 6 12 in halves is 6

Answer:

18

Step-by-step explanation:

1:14

x:252

252/14= 18

Answer:

12

Step-by-step explanation:

4/3y = 16

4y=48

y=12

Answer:We have been given that a rectangle has a height to width ratio of 3:4.5.

Let h be height and w be width of rectangle.

We can set our given information in an equation as:

Now we will substitute h=1 in this equation.

We can see that width of rectangle is 1.5 times height of rectangle.

Our one set of dimensions of rectangle will be: height=1 and width=1.5.

We can get many set of dimensions for our rectangle by multiplying both height and width of rectangle by same number.

Multiplying by 5 we will get our dimensions as: height 5 and width 7.5.  

Therefore, (1 and 1.5) and (5 and 7.5) dimensions for rectangle will be scaled version of our rectangle.

Step-by-step explanation:

Answer:

1.5 2 2.5

Step-by-step explanation:

brainliest please

9514 1404 393

Answer:

  A

Step-by-step explanation:

Rigid transformations and dilation will result in similar figures. Choices B, C, and D are not rigid transformations or dilations, but are different stretches in one direction than another.

The transformation of A is a dilation by a factor of 2 and reflection over the y-axis. It results in similar figures.

Answer:

The entrance is30 ft wide

Answer:

20 feet

Step-by-step explanation:

When graphing, we see that the length of the transverse axis is the shortest distance, which is a length of 20 feet from one wall to the other.

Answer:

They sold 10 videos and 30 CDs

Step-by-step explanation:

So, you need two different equations-

We will use c to represent CDs and v to represent videos

So-

c + v = 40

4c + 6v = 180

Single out a variable in the first equation-

v = 40 - c

Because this is equal to v, insert it where v is in the second equation-

4c + 6(40 - c) = 180

Multiply-

4c + 240 - 6c = 180

Solve-

-2c + 240 = 180

-2c = -60

c = 30

Now that you know c, use first equation to find v-

30 + v = 40

v = 10

So c = 30 and v = 10

Answer:

7 or 6

Step-by-step explanation:

Answer:

a- 40

b- 15

c- 2.5

Step-by-step explanation:

ratio of pounds to kilograms is

22 pounds: 10 kilograms

filo- 88 pounds

88 pounds: ? kilograms

22 times 4 is 88

so times 4 on both sides

22 pounds: 10 kilograms

88 pounds: 40 kilograms

same thing with spot and bella

spot- 33

22: 10

/2    /2

11: 5

*3   *3

33 pounds: 15 kilograms

bella- 5.5

22 pounds: 10 kilograms

/4                  /4

5.5 pounds: 2.5 kilograms

Answer:

true

Step-by-step explanation:

true

Answer:

-13.9 represents the slope

It is the number of units of the product left in stock per week

The negative value shows it decreases per week

Step-by-step explanation:

Here, we want to state what the value -13.9 represents

Generally, the equation of a straight line can be represented by the equation

y = mx + c

where m is the slope

In this case, -13.9 represents the slope of the model

The slope is calculated by dividing a change in y by a change in x

With respect to the question, the slope here represents number of units of the product left in stock per week

Answer:

[tex]x = -1[/tex]

Step-by-step explanation:

Equation: [tex]1+10x+13=4[/tex]

Step 1: Balance both parts of the equation.

[tex]1+10x+13=4[/tex]

[tex](10x)+(1+13)=4[/tex]

[tex]10x+14=4[/tex]

[tex]10x+14=4[/tex]

Step 2: Reduce 14 from both parts of the equation.

[tex]10x+14-14=4-14[/tex]

[tex]10x= -10[/tex]

Step 3: Split both sides by 10, because [tex]\mathrn {10x = -10}[/tex].

[tex]\frac{10x}{10} = \frac{-10}{10}[/tex]

[tex]10 / -10 = -1[/tex]

Therefore, x = -1.

Answer:

We conclude that

Step-by-step explanation:

Given

<1 and <2 form a linear pair

m∠1 = 4m∠2

To determine

Find the measure of each of the two angles.

Important Points about linear pair:

As

<1 and <2 form a linear pair

m∠1 = 4m∠2

In other words, angle 1 is 4 times the measure of angle ∠2.

Let the angle ∠1 be = x

As the angle 1 is 4 times the measure of angle ∠2, so

The angle 2 will be = 4x

As <1 and <2 forms a linear pair, thus the measure of the sum of <1 and <2 will be 180°, so

[tex]x + 4x = 180[/tex]

[tex]5x = 180[/tex]

divide both sides by 5

[tex]\frac{5x}{5}\:=\:\frac{180}{5}[/tex]

[tex]\:x=36^{\circ }[/tex]

Thus, we conclude that

Answer:

B

Step-by-step explanation:

Area of Trapezoid

Area = (b1 + b2)*h/2

Area = (9 + 13)*11 /2

Area = (22) * 11/2

Area = 121 sqr. units.

Area of the unshaded triangle

Area = 1/2 b * h

Area = 1/2 9 * 11

area = 49.5

Area of the shaded region

Area = 121 - 49.5

Area = 71.5

B

Answer:

x = 70 degrees

Step-by-step explanation:

The supplement of 105 is 75 degrees, and the other angle of the triangle is 35 degrees. So x = 180-75-35 = 70 degrees

Answer:

70

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

according to the question

27×⅓

9

Answer:

180 divided by 10 equals 18 and the largest angle is 7 parts 7x10= 126

so 126 is your answer :)  hope this helped.