Dani decides to add the cost of each shirt and the cost of each bag together, and then multiply by seven to find the total cost. Write an algebraic expression for the total cost of the gifts using Dani’s method. Remember, use t and b as your variables. (3 points)

Answer:

4. C

3. B

Step-by-step explanation:

Answer:

Step-by-step explanation:

A display has 6 packs of marbles with a total mass of 629g. The packaging of each pack has a mass of 2/3 g and each marble has a mass of 4 1/2 g.

Which equation can we use to determine m, the number of marbles per pack?

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

A total mass is the sum of 6 packs and each pack is:

We can put it as equation:

Correct option is D

Answer:

D. 6(4 1/2 m + 2/3)=629

Step-by-step explanation:

I did it on khan academy so theres no way this is incorrect.

Answer:

9. x = 12

10. x = 31

Step-by-step explanation:

9. Corresponding angles are equal, so technically you can move that (7x - 20) to be diagonal with the (4x + 16). Along with the corresponding angle, diagonal angles are equal to each other. Therefore you can set (7x - 20) equal to (4x + 16) to find x.

7x - 20 = 4x + 16

Solve

3x - 20 = 16

3x = 36

x = 12

Therefore x is equal to 12

Check:

4(12) + 16

= 64

7(12) - 20

= 64

10. All angles in a triangle have to add up to 180 degrees. Therefore, you can write your equation like this:

x + 2x + 25 + 2x = 180

Combine like terms

5x + 25 = 180

Solve

5x = 155

x = 31

Therefore, x = 31.

Check:

31 + 2(31) + 25 + 2(31) = 180

31 + 62 + 25 + 62 = 180

180 = 180

I hope this helps!!

- Kay :)

Answer:

The m<PML + m<PMQ + m<QMN = 180° since they are supplementary

therefore,

45°+(6x-5)+x=180°

45+7x-5=180

40+7x=180

7x=140

x=20

To test it we should plug in x for each equation and the sum of those answers should equal 180

45+(6x20-5)+20=180?

45+115+20=180?

160+20=180?

180=180

x=20 is valid

Step-by-step explanation:

Answer:

1100

Step-by-step explanation:

Answer:

9 x 9 x 9 x 9

Step-by-step explanation:

9^4 is a shorter and similar way of writing 9 x 9 x 9 x 9

Answer:

x = 1,

Common Difference = -3

Step-by-step explanation:

Each number in series has the same difference, hence

Which solves for -3

Answer:

x=1

c.d.=3

Step-by-step explanation:

2(2x+3)=x+1+x+7

4x+6=2x+8

4x-2x=8-6

2x=2

x=1

so terms are 2,5,8

c.d.=5-2=3

Answer:

The point with coordinates (-3,4) is located in quadrant II. The point with coordinates (-4,0) is located on the x-axis. The point with coordinates (0, -5) is located on the y-axis.

Answer:

in the upper right Quadrant.

Step-by-step explanation:

I hope this helps

Answer:

9/28

Step-by-step explanation:

3*3 = 9

7*3 = 21 not 28

hence, this fraction isn't proportional

Given:

The circumference of the base of a cone is 10π cm.

The circumference of the base of a second similar cone is 20π.

To find:

The ratio of the surface area of the first cone to that of the second cone.

Solution:

Let the radii of base of two cones are [tex]r_1[/tex] and [tex]r_2[/tex] respectively.

Circumference of the circular base is [tex]2\pi r[/tex], where, r is radius.

We have,

[tex]2\pi r_1=10\pi\text{ cm}[/tex]

[tex]r_1=\dfrac{10\pi}{2\pi}\text{ cm}[/tex]

[tex]r_1=5\text{ cm}[/tex]

And,

[tex]2\pi r_2=20\pi\text{ cm}[/tex]

[tex]r_2=\dfrac{20\pi}{2\pi}\text{ cm}[/tex]

[tex]r_2=10\text{ cm}[/tex]

It two cons are similar, then ratio of there areas is equal to square of the ratio of there corresponding dimensions, i.e., radius or heights.

[tex]\dfrac{A_1}{A_2}=\left(\dfrac{r_1}{r_2}\right)^2[/tex]

[tex]\dfrac{A_1}{A_2}=\left(\dfrac{5}{10}\right)^2[/tex]

[tex]\dfrac{A_1}{A_2}=\left(\dfrac{1}{2}\right)^2[/tex]

[tex]\dfrac{A_1}{A_2}=\dfrac{1}{4}[/tex]

The ratio form is

[tex]V_1:V_2=1:4[/tex]

Therefore, the ratio of the surface area of the first cone to that of the second cone is 1:4.

The ratio of the surface area of first cone to that of the second cone is; 1:4

Formula for the circumference of the base of a cone is;

C = 2πr

Where;

C is circumference

r is radius

Thus;

10π = 2πr

r = 10π/2π

r = 5

20π = 2πr

r = 20π/π

r = 10

Now, formula for surface area of the base is;

A = πr²

Thus, ratio of both area of first cone to second cone is;

A1/A2 = 5²/10²

A1/A2 = 25/100

A1/A2 = 1/4

Thus, ratio of first cone to that of the second cone is; 1:4

Read more on surface area of cone at; https://brainly.com/question/6613758

Answer:

It's 9

Step-by-step explanation:

2x+10=3x+1

-x=-9

x=9

Answer:

D. 32

Step-by-step explanation:

[tex] {4}^{ - 1} \times ( {2}^{3} \div {4}^{ - 2} )[/tex]

[tex] {2}^{ - 2} \times ( {2}^{3} \div {2}^{ - 4} )[/tex]

[tex] {2}^{ - 2} \times {2}^{7} [/tex]

[tex] = {2}^{5} = 32[/tex]

Answer:

49.3

Step-by-step explanation:

3.40 x 2.90 x 5.00 = 49.3 :)))

Answer:

21.6 feet.

Step-by-step explanation:

By proportion that is (9/5) * 12

= 1.8 * 12

= 21.6 feet.

Answer:

If the month is march then the next month is February

Step-by-step explanation:

Answer:

There you are, hope this helps.

The required graph of the equation has been shown,

To draw the graph of the given equaiton,
1. y = 2x - 3     2. y = -2x + 3        3. y = 2x + 3          4. y = -2x - 3

The graph is a demonstration of curves that gives the relationship between the x and y-axis.

Here,
1. y = 2x - 3

The slope is m = 2 and has a negative y-intercept of -3

2. y = -2x + 3
The slope is m = -2 and has a y-intercept of 3

3. y = 2x + 3
The slope is m = 2 and has a y-intercept of 3        

4. y = -2x - 3

The slope is m = -2 and has a y-intercept of -3  

Thus, the required graph of the equation has been shown,

Learn more about graphs here:

brainly.com/question/16608196

#SPJ2

Answer:

The product of 3[tex]\sqrt{8}[/tex] (4 [tex]\sqrt{3}[/tex]) is 24[tex]\sqrt{6}[/tex]

The answer is A.

Answer:

5.625

Step-by-step explanation:

5 1/2 + 1/8 = 5 5/8 = 5.625

Answer:

21

400

Step-by-step explanation:

Answer:

11 1/4

Step-by-step explanation:

9/2/4/10

9/2/2/5

9/2*5/2

45/4

11 1/4

Final Answer:

45/4

Step-by-step explanation:

9/2 ÷ 4/10

90/8 ⇒ 45/4

Answer:

One Solution

Step-by-step explanation:

Do distributive property

3k+6+3+7k=2k+4+3k

Combine like terms

10k+9=5k+4

Subtract 5k from 10k

5k+9=4

Subtract 9 from 4

5k=-5

Divide

k=-1

Hope this helped, Have a Wonderful Day!!

Answer:

43°

Step-by-step explanation:

The first thing you should do is make the equation. We should know that the sum of all the angles is 180. So it should look like this...

[tex]49+88+x=180[/tex]

Combine like terms:

[tex]137+x=180[/tex]

Subtract the 137 on both sides:

[tex]x= 43[/tex]

That's it the value of v is 43°.

Answer:

the answer is 43

Step-by-step explanation:

this is so simple

the first thing that u have to remember or there is a rule

the rule is : that all the three angels added up equal to 180 degrees

so that means 88+49+v=180

88+49+v=180 first combine like terms

137+v=180 now subtract both sides by 137

v=  43

ANSWER CHECK

88+49= 137

137+ 43= 180

Answer:

7+3n=28 and the answer would be n=7

Step-by-step explanation:

7+3n=28 subtract 7 on both sides, that would leave 3n=21, divide 3 on both sides, the answer would be n=7 if I'm correct. I hope I helped.

Answer:

[tex]12\sqrt{3}[/tex]

Step-by-step explanation:

I do not know if this is completely correct

Answer:

what am i supposed to be answering..?

Step-by-step explanation: