Which could be a step used when solving the equation 5x+10=7.5x?

Answer:

1. [tex]x=13,\,y=13\sqrt{2}[/tex]

2. [tex]x=y=\frac{30\sqrt{2}}{2}[/tex]

3. [tex]x=6,\,y=3\sqrt{3}[/tex]

4. [tex]x=17\sqrt{3},\,y=17[/tex]

5. [tex]x=y=10[/tex]

6. [tex]x=50,\,y=25[/tex]

7. [tex]x=y=2\sqrt{7}\,\,(\mathrm{because}\,\,\frac{2\sqrt{14}}{\sqrt{2}} = \frac{2\sqrt{2}\sqrt{7}}{\sqrt{2}} = 2\sqrt{7} )[/tex]

8. [tex]y = \frac{24\sqrt{3}}{3} = 8\sqrt{3},\,x = 16\sqrt{3}[/tex]

9. [tex]x = 11\sqrt{3},\,y=11\sqrt{3}\cdot\sqrt{3} = 33[/tex]

10. [tex]y = 2\sqrt{6},\,x = \sqrt{6}\cdot\sqrt{3} = 3\sqrt{2}[/tex]

11. [tex]x = \sqrt{10},\,y=\sqrt{10}*\sqrt{2} = 2\sqrt{5}[/tex]

12. [tex]x = \frac{4\sqrt{21}}{\sqrt{3}} = 4\sqrt{7},\,y=8\sqrt{7}[/tex]

13. [tex]x = 17\sqrt{3},\,z = 34,\,y =34\sqrt{2}[/tex]

14. [tex]x = 27\cdot\frac{2}{\sqrt{3}}=18\sqrt{3},\,h=9\sqrt{3},\,z=9,\,y=18[/tex]

Step-by-step explanation:

Please ask for explanation on specific numbers, as doing it all is a lot of writing. From the parially-written aswers I assume you know the rules for 90-45-45 triangles and 90-60-30 triangles, which are the only ones in the task sheet.

Answer:

D

Step-by-step explanation:

(- 5)f(x)

= - 5(2x² - 4) ← multiply terms in parenthesis by - 5

= - 10x² + 20

Answer:

624.102

Step-by-step explanation:

pls give brainliest im new and need points

Answer:

no, its not because its showing an ad hominem fallacy.

Step-by-step explanation:

brainliest?

Answer:

wealthy people travel by plane

other people travel by road

poor people travel by road

is the argument valid ANS:no

other people who do not travel on plane travel on car

and people who are poor travel on feet

Answer: 16

Step-by-step explanation:

Answer:

x = 12 and x = -6

Step-by-step explanation:

First subtract 6x on both sides to get a 2nd degree polynomial equal to zero:

[tex]x^2-6x-72=0[/tex]

To complete the square, the formula is to divide 'b' by 2 and square the result. The general form for a 2nd degree polynomial of the variable 'x' is as follows:

[tex]ax^2+bx+c=0[/tex]

For your case, b = 6. Therefore, the term that must be added and subtracted to our equation is:

[tex](6/2)^2=3^2=9[/tex]

Add and subtract 9 to our equation to get:

[tex]x^2-6x+9-9-72=0[/tex]

The first three terms form a perfect square, we have:

[tex](x^2-6x+9)-9-72=0[/tex]

[tex](x^2-6x+9)-81=0[/tex]

What multiplies to equal 9 but adds to equal -6? That would be -3 and -3. Therefore:

[tex](x-3)^2-81=0[/tex]

Add 81 to both sides to get:

[tex](x-3)^2=81[/tex]

We want to take the square root, but recall a square root has a positive and negative branch. Therefore we have two solutions:

[tex]x-3=9[/tex]

[tex]x-3=-9[/tex]

[tex]x=12[/tex]

[tex]x=-6[/tex]

Answer:

Area = 32m^2q

Step-by-step explanation:

Area = bh

Area = 8mq · 4m

Area = 32m^2q

The approximate length of "y" from the given diagram is 2.0inches

The formula for calculating the volume of a prism is expressed as:

V = lwh

l is the length

w is the width

h is the height

Given that V =4 cubic inches, hence:

4 = x * x* x

4 = x^3
x = ∛4

x = 1.587

Using the pythagoras theorem;

y^2 =1.587^2 +1.587^2

y^2 = 5.037

y = 2.0in

Hence the approximate length of "y" from the given diagram is 2.0inches

Learn more on volume of prism here: https://brainly.com/question/1331127

Answer: B. 2.0

Step-by-step explanation:

edge 2023

Answer:

64

Step-by-step explanation:

(-2)^6

6 is an exponent and basically it tells us to multiply the base, -2 by itself 6 times

so (-2)^6 is the same as saying -2 × -2 × -2 × -2 × -2 × -2

-2 × -2 × -2 × -2 × -2 × -2 = 64 so the value of (-2)^6 is 64

Im not sure what it is but my best bet would be on A because the rest of them all say greater than 0 and you are trying to find the least.

Answer:

n < 0

Step-by-step explanation:

Given that:

A number less than 0

Solve:
Since it saying that A number (n) is less than 0 it means it can't be greater.

From the following answer chioce:

[A] n=0

[B] n greater than n 0

[C] n greater then n with a underscore on the bottom 0

[D] n greater than 0 with a underscore 0​

We can see that [B], [C], and [D] all saying greater than. While only [A] has a equal sign to 0.

I'm guess that [A] meant to be put as n < 0. Since the other are saying greater than. But if not. None of the above are correct.

< → less than

> → greater than

A number less than 0 ⇒ n < 0

Kavinsky

Answer:

$2,425 in January

Step-by-step explanation:

$29,100/12 months in a year = $2,425 each month

Answer:

-117

Step-by-step explanation:

-(-4)(-6)-3/5(10+15)

=4(-6)-3/5(25)

=-24- 15

=-39

-39÷1/3

=-117

Answer:

-1/2 x + 3

Step-by-step explanation:

Answer:

Step-by-step explanation:

If you are asking how many dumnplings he can make well this is the answer:

1) 1500÷20= 75

So he can make 75 dumplings

Answer: Four (4)

Step-by-step explanation:

       We have four quartiles. They can be labeled as Q1, Q2, Q3, and Q4. I have attached an example, this comes from mathbitsnotebook.com.

   As shown in the example, the quartiles are broken up by the median, and then the median of the medians.

Answer:

slope = 1/2

Step-by-step explanation:

Pick two convenient integer coordinates

 I'll use  (0,-1) and (2,0)

slope =   (y1-y2)/(x1-x2) =   (-1-0) / ( 0-2) = 1/2

Answer:

0

Step-by-step explanation:

→ Find the change in y coordinates

-6 --6 = 0

→ As the change in y is 0, the gradient is 0

Step-by-step explanation:

Here,

(8,-6)=(x1,y1)

(-4,-6)=(x2,y2)

we know, solpe of any line passing throgh (8,-6)&(-4,-6) be

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

m={-6-(-6)}/(-4-8)

m=o/-12

m=o

Answer:

X= 3/2

Step-by-step explanation:

hope this helps

Answer:

38 is your answer :)

Step-by-step explanation:

So what you want to do is P.E.M.D.A.S (parenthesis, exponets, multiplication/division, addition/subtraction) * whatever comes first always do it in order*

3^2+12/ (6-3) x 8

6-3 = 3

3^2+12/(3)*8

3^2+4*8

6+4*8 =32 and 32+6 = 38

Answer:

2.98

Step-by-step explanation:

Tan(40) = 2.5/x

x = 2.5/Tan(40)

x = 2.98

Answer:

Step-by-step explanation:

We know that:

Therefore,

Thus, we obtained:

Answer:

B) 686 cubic units

Step-by-step explanation:

If one cube has a side length of 7, then it equals to 343 cubic units. Since there are 2 cubes, this translates to 686 cubic units.

Answer:

260+n

Step-by-step explanation:

1hundred and 2 tens +n +1 hundred 4 tens

=120+n+140

=260+n

Answer:

sin x + cos x = 5/13 + 12/13

Step-by-step explanation:

Given that tan x = 5/12, what is the value of sin x + cos x?

draw a triangle with opposite leg=3 and hypotenuse=5

tan p = opposite/adjacent = 3/4

similarly, in a 5-12-13 right triangle

sin x + cos x = 5/13 + 12/13

Answer:

Step-by-step explanation:

The cross sectional area of a basketball would indeed be a circle. The units for surface area would be meters squared. The units meters cubed would be volume. Area is inherently a 2-dimensional problem. Therefore, having 3-dimensional units makes no sense. In your case, the correct answer would be yards squared

Answer:

2776 is the surface area.

Step-by-step explanation:

19 x 48 = 912 x 2 = 1824. 7 x 19 = 133 x 2 = 266. 49 x 7 = 343 x 2 = 686.

Answer:

2762

Step-by-step explanation:

The formula is:
2*(width*length+height*lenght+height*width)
2*(19*48+7*48+7*19)

this equals 2762

Answer:

A reflection over the x-axis

Step-by-step explanation:

The X-axis is the horizontal line, and if G is the result of F, then figure F going up or down 6 units would make it uneven and it wouldn't look flipped.

Answer:

A, a reflection over the x-axis

Step-by-step explanation:

If you focus on one point of figure G (-5,5) you can apply the reflecting rule over the x-axis (change the y-coordinate's sign and leave the x-coordinate the same) and get the point (-5, -5) which fits the rule.

Answer:

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

2(9)-4=14