Which operation should be used to solve x + 7 = 19?

Step-by-step explanation:

[tex] - 4x + 3(2x - 5) = 31 \\ - 4x + 6x - 15 = 31 \\ 2x - 15 = 31 \\ 2x = 31 + 15 \\ 2x = 46 \\ x = 46 \div 2 \\ x = 23[/tex]

Answer: Marie ran 4.5 miles on Monday.

Step-by-step explanation: 5.7

                                            +1.2

                                             6.9      

Answer:

7x-9

Step-by-step explanation:

P=x+(2x-4)+(4x-5)

P= x+2x-4+4x-5

P =x+6x-9

P =7x-9

P is perimeter

Answer:

h = 7

Step-by-step explanation:

We are given the equation A=bh , and need to work out the unknown variable .

So we substitute the values of A and b given :

70 = (10)(h)

70 = 10 × h

Divide both sides by 10 :

70 ÷ 10 = h

h = 7

Hope this helped and have a good day

-1+(-3) is  3 units from -1 in the left direction

-1+(-3) is blank units from -1 in the blank direction

-4 is  3 units from -1 in the left direction

because we know that

in the real line if we go 3 units in left from -1 we get -4

since in the real number line

the pattern is ................ - 5, -4, -3, -2, -1 ,0,1,2,3,4,5,............

thus we get  

-1+(-3) is blank units from -1 in the blank direction

-4 is  3 units from -1 in the left direction

learn more about of direction here

https://brainly.com/question/17026169

#SPJ9

The original dimensions of the piece of metal are 39 inch by 24 inches.

Let the breadth of the rectangular piece be b inches.

Hence, according to the data given in the question,

Length of the rectangular piece will be (b + 15) inches.

After 4 squares of 3 inches each are cut from the corners of the rectangular piece, the length and breadth of the piece becomes:-

Length = b + 15 - 3 - 3 = (b + 9) inches

Breadth = b -3 -3 = (b - 6) inches

The height of the subsequent open box made will be 3 inches.

We have,

Volume of the cuboidal open box = 1782 cubic inches.

Also, we know that,

Volume of cuboid = l*b*h

Where,

l is the length,

b is the breadth, and

h is the height

Hence,

(b+9)(b-6)(3) = 1782 cubic inches

(b+9)(b-6) = 1782/3 = 594

We can write 594 as 33*18

Hence,

(b+9)(b-6) = 33*18

b+9 = 33 or b-6 = 18

b = 33-9 = 18+6 = 24

Hence, the original dimensions are :-

b + 15 = 24 + 15 = 39 inches, and

b = 24 inches

To learn more about volume of cuboid, here:-

https://brainly.com/question/23118276

#SPJ4

Answer:

-113

Step-by-step explanation:

Plug in 7 for x and you get -4(7)² + 10(7) + 13

7² = 49 so -4(49) = -196

10(7) = 70

Add them all up and you get -113 (-196 + 70 + 13 = -113)

Answer:

The answer are given below:

Step-by-step explanation:

1. Roaster form

A={0,1,2,3,4}

Set builder form

A={x: x⊂ w, x<5}

2.

Roaster form

B={2,3,5,7,11,13,17,.................}

Set builder form

B={x: where x is a prime number}

3.

Roaster form

C={jan ,june ,july }

Set builder form

C={x: x is month starting with "J" }

4.

Roaster form

D={4,6,8,9}

Set builder form

D={x: where x is a prime number, x<10}

5.

Roaster form

E={null}

Set builder form

E={x: x is null}

learn more about set from here

https://brainly.com/question/28492445

#SPJ9

Answer:

9

Step-by-step explanation:

[tex]38-14\\\bold{24}\\\rightarrow 1\div \:4\cdot \:24+3^3\div \:9\\3^3\\\bold{27}\\\rightarrow 1\div \:4\cdot \:24+27\div \:9\\1\div \:4\cdot \:24\\\frac{1}{4}\cdot \:24\\\bold{6}\\\rightarrow 6+27\div \:9\\27\div \:9\\\bold{3}\\6+3\\=9[/tex]

Answer:  m 21=

I got it right on test!

Step-by-step explanation:

The standard deviation is provided by this. = 6.7528

Because it aids in comprehending measurements whenever the data is distributed, the standard deviation is significant. The standard deviation of the data will be higher the more evenly distributed the data is.

sample data = ( 32, 41, 36, 24, 29, 30, 40, 22, 25, 37)

To find mean of the given data:

Mean = Sum of items/ Count items

Mean = (32 + 41 + 36 + 24 + 29 + 30 + 40 + 22 + 25 + 37 / 10)

          = 31.6

now finding the variance:

First we  Add All the sample:

32 + 41 + 36 + 24 + 29 + 30 + 40 + 22 + 25 + 37 = 316

make Square of the solution:

316*316 =99856

and multiply by how many items there are. We have 10 items.

=99856/10

= 9985.6

For the time being, put this number aside.

Take your original set of numbers from Step 1 and square each one this time on its own.

32² + 41² + 36² + 24² + 29² + 30² + 40² + 22² + 25² + 37² = 10396

Subtract the sum from Step 2 from of the sum from Step 3.

10396 - 9985.6 = 410.4

The items in someone data set is reduced by 1 by.10 - 1 = 9

Divide the result of Step 4 even by result of Step 5. You get the variation from this.

410.4 / 9 = 45.6

Your response from Step 6 should be squared. The standard deviation is provided by this.

6.7528

To know more about standard deviation  visit:

https://brainly.com/question/12402189

#SPJ4

I understand that the question you are looming for is:

For the following sample data, compute the variance and the standard deviation. 32, 41, 36, 24, 29, 30, 40, 22, 25, 37

The volumes of the cylinder are 565. 56 cubic inches and  1131. 12 cubic inches respectively.

The formula for volume of a cylinder is expressed as;

Volume = πr²h

Where;

Substitute the values

Volume = 3. 142 × 6² × 5

Volume = 3. 142 × 36 × 5

Volume = 565. 56 cubic inches

If the height is doubled, h = 2 × 5 = 10

Substitute the values

Volume = 3. 142 × 6² × 10

Volume = 3. 142 × 36 × 10

Volume = 1131. 12 cubic inches

Thus, the volumes of the cylinder are 565. 56 cubic inches and  1131. 12 cubic inches respectively.

Learn more about volume here:

https://brainly.com/question/1972490

#SPJ1

The value of j in the scaled copy in the polygon is: 0.03.

When a figure is scaled, the corresponding dimensions of the new and original figures have a ratio that is the same because they are proportional to each other.

Polygon K and polygon L are similar polygons and therefore their corresponding side lengths are proportional. The ratio below would be created:

j/0.5 = 0.18/3

Cross multiply

j = (0.5 × 0.18)/3

j = 0.09/3

j = 0.03

Therefore, the value of j in the scaled copy in the polygon is: 0.03.

Learn more about scaled copy on:

https://brainly.com/question/9762240

#SPJ1

Answer: They charge $28 per lesson the Equation is 35 + 5x = $175

Step-by-step explanation: He rented the snowboard for $35 and then took 5 hours of snowboarding lessons. Then the whole thing cost $175.

The objects are (A) tin fork and knife from a camping set, (C) a Steel pole fence post, and (F) a Copper coin are correct.

A material is said to be malleable if it is easy to roll or hammer a thin sheet out of it.

It is given that:

The list of objects is given in the question.

As we know from the definition of malleable; the material is said to be malleable if it is easy to roll or hammer a thin sheet out of it.

Metals have the physical quality of malleability, which makes them easy to crush, hammer, or bend.

Metals that are bendable include copper coins, steel fence posts, and camping forks and knives made of tin.

Thus, the objects are (A) tin fork and knife from a camping set, (C) a Steel pole fence post, and (F) a Copper coin are correct.

Learn more about the malleable here:

https://brainly.com/question/21234770

#SPJ1

Answer:

1. straight

2. right

3. obtuse

4. acute

Step-by-step explanation:

Answer:

They can make 720 quarts in 36 hours.

Step-by-step explanation:

First we set up a ratio of 100 quarts:5 hours since that is a given ratio. Since hours was in the denominator of the ratio before, we place the 36 in the denominator of the other ratio, x quarts: 36 hours.

Setting them equal gives the following proportion:

100/5=x/36

Cross multiply to solve:

5x=3600

x=720

Answer:

720

Step-by-step explanation:

100 divided by 5 =20 and 20 times 36 is 720 hope this helped

Answer:

length is 20 width is 5

Step-by-step explanation:

35

5 20

Answer:

$33.

Step-by-step explanation:

330 miles x (1 gal/34 miles) x ($3.40/gal)= $33.

I hope this helps, have a blessed day! :)

Answer:  $33

Step-by-step explanation:

1 gallon=$3.40

Hence,

Make a proportion:

 34 milles -  $3.40

330 milles - x gallones

Thus,

[tex]\displaystyle\\x=\frac{330*3.40}{34} \\\\x=\frac{33*34}{34}\\\\x=33\ dollars[/tex]

From 10:55 pm to 11:00 pm, 5 minutes have elapsed.

From 11 pm to 12:00 pm, 60 minutes have elapsed, and from 12:00 pm to 1:00 am, another 60 minutes have elapsed, from 1:00 am to 1:20 am, 20 minutes have elapsed plus.

In the 145 minutes, there are 2 hours and 25 minutes.

Answer: From 10:55 pm to 1:20 a.m there is a time period of 2 hours and 25 minutes. Correct alternative is "C".

Y= 1764

It is given that y varies jointly as s and n2

From the given question if s = 7 and n = 4 then y =336

So,

y= k * s * n^2

Let k a constant number

 336= k * 7 * 4^2

336 = k  *7* 16

336 = k * 112

Therefore, k = 3

So now we get the General equation i.e

   y= 3 * s * n^2

Now we have to find the value of y when s= 12 and n= 7

Y=3* 12* 7^2

= 3*12*49

=1764

To know further about the variable value you can refer to the given link below:

       https://brainly.com/question/25665064

     #SPJ4

The  linear inequality will have a solution of (0,0) is y<-2x and y>-3x.

Option (A) and (D) is correct.

The relation between two expressions that are not equal, employing a sign such as ≠ ‘not equal to’, > ‘greater than’, or < ‘less than’.

Given:

Linear inequalities are the expressions where any two values are compared by the inequality symbols such as, '<', '>', '≤' or '≥'. These values could be numerical or algebraic or a combination of both.

According to given question we have

a. y<-2x

To put the value of x any y (0,0) we get

=0<-2*0

=0<0

b. y<-3x+4

To put the value of x any y (0,0) we get

=0<-3*0+4

=0<0+4

=0<4

c. y>-2x+6

To put the value of x any y (0,0) we get

=0>-2*0+6

=0>0+6

=0>6

d. y>-3x

To put the value of x any y (0,0) we get

=0>-3*0

=0>0

Therefore, the  linear inequality will have a solution of (0,0) is y<-2x and y>-3x.

Learn more details about inequality here:

https://brainly.com/question/20383699

#SPJ1

Answer:

5X - 2 = 18

Step-by-step explanation:

5 x 4 = 20

20 - 2 = 18

Answer:

1. (2x + 1) (x - 4)

2. (3y +2 ) (y + 1)

3. (w - 3) (3w + 5)

4. (4s - 1) (s + 7)

5. (x + 5) (2x - 3)

Step-by-step explanation:

Lots of good articles on factoring quadratics - that is what this is called.

Answer:

1. (2x + 1) (x - 4) 

2. (3y +2 ) (y + 1)

3. (w - 3) (3w + 5)

4. (4s - 1) (s + 7)

5. (x + 5) (2x - 3)

Step-by-step explanation:

Answer:

a reflection across the y-axis and a translation up of 4

Step-by-step explanation:

Answer:

5a-40=-2b

5a-40/-2=-2b/-2

-5a/2+20=b

Answer:

7√3

Step-by-step explanation:

The flipped shape has a pair of parallel line

A pair of line is said to be parallel lines when the lines tend to maintain equal distance apart and never intersect at any point. such lines has peculiar properties and are useful in mathematics.

Since a pair of parallel line do not intersect their is not angle between them.

Flipping a shape will change the position of the flipped shape to a new one. This activity does not add to the size of a shape or to the property of the shape.

Margot flipping a pair of parallel lines will not add or reduce the number of the parallel lines. It however creates point of intersection between the parallel line and horizontal line crossing the parallel line.

Read more on parallel line here: https://brainly.com/question/13763238

#SPJ1

A rectangular bathroom mirror having a perimeter of 24 feet and an area of 20 square feet, The length and breadth of rectangle are 10 feet and 2 feet respectively.

Given,

perimeter of the rectangle = 24 feet

area of rectangle = 20 sq. feet

Formula of perimeter of rectangle = 2(L + B)

where L = length of the rectangle , Breadth of the rectangle.

⇒ 24 = 2(L + b)                                  

⇒ 12 = L + B

⇒ L = 12 - B                                                  ........(1)

Formula of area of rectangle = L × B

⇒ 20 = L × B                                      

⇒ L = 20 / B                                                  .......(2)

From (1) and (2)

equating two equations,

12 - B = 20 / B

⇒ 12B = 20 + B²

⇒ B² - 12B + 20

On solving,

⇒ B = 10, 2

So, the Length and breadth of rectangle are 10 feet and 2 feet

To learn more about area and perimeter from given link

https://brainly.com/question/443376

#SPJ9