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sweet-ann [11.9K]

3 years ago

8

Just number 7, please help quickly I don’t know what I’m doing (if you give an explanation I’ll mark as brainliest)

2 answers:

adell [148]3 years ago

4 0

Answer:

x=12

Step-by-step explanation:

x+5+3x+10=x+51

Step 1- Simplify

15+4x=x+51

Step 2- Move the variable to one side

15+4x=x+51

-1x -1x

15+3x=51

Step 3- Subtract

15+3x=51

-15 -15

3x=36

Step 4- Divide

<u>3x</u>=<u>36</u>

3 3

Conclusion-- x=12

Bess [88]3 years ago

3 0

Answer: b

Step-by-step explanation:

x=12

12+5=17

3 times 12 is 36+10=46

46+17=63

12+51=63

They are both 63

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I need help if you do it you can have brainest

Ne4ueva [31]

9514 1404 393

Answer:

see below

Step-by-step explanation:

Starting from the point-slope equation ...

y -y1 = m(x -x1)

Solving for y gives ...

y = mx +(y1 -m·x1)

So, the slope-intercept form equation is fairly easily found:

y = mx +b . . . . where m = m, and b = y1-m·x1

This is the equation we have used for 'b' in the attached spreadsheet.

__

Of course, the formula for slope is ...

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

This is the equation we have used for 'm' in the attached spreadsheet. For all problems, we have used the first point. (It doesn't matter which point you use if there are two of them.)

__

The second attachment is the Google Sheets spreadsheet saved in ODS format. Most spreadsheet programs should be able to open that so you can see the formulas, if you're interested. (The gray values of m are computed using the two points. The unshaded values of m are entered by hand.)

_____

I'll write a couple of equations in each group so you can see how the spreadsheet numbers relate:

y = mx +b

1. y = 2x -7

3. y = 2/3x +4

8. y = 1/3x -5

9. y = -5/2x +4

6 0

3 years ago

A cone and a cylinder have equal radius, r, and equal altitudes, h. If the slant height of the cone is l, then the ratio of the

77julia77 [94]

Given:

radius of cone = r

height of cone = h

radius of cylinder = r

height of cylinder = h

slant height of cone = l

Solution

The lateral area (A) of a cone can be found using the formula:

$A\text{ = }\pi rl$

where r is the radius and l is the slant height

The lateral area (A) of a cylinder can be found using the formula:

$A\text{ = 2}\pi rh$

The ratio of the lateral area of the cone to the lateral area of the cylinder is:

$\pi rl\text{ : 2}\pi rh$

Canceling out, we have:

$\begin{gathered} =\frac{\pi rl}{2\pi rh} \\ =\text{ }\frac{l}{2h}\text{ or l:2h} \end{gathered}$

Hence the Answer is option B

3 0

1 year ago

Please help I don't have enough brain cells for this ;-;

bonufazy [111]

Answer:

$\frac{27}{22}$

Step-by-step explanation:

4 0

3 years ago

Calculate 21+23+25...+81

motikmotik

Answer:

150

Step-by-step explanation:

Have a great night. ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

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︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

4 0

3 years ago

Draw two identical rectangle. Shade 1 seventh of one rectangle and 1 tenth of the other. Lavel the unit fractions. Use you recta

Bumek [7]

Answer:

1/7 is greater than 1/10 using coordinates and its area of the division concept.

Step-by-step explanation:

We have to draw two identical rectangles and have to shade them.

Here is the diagram attached with.<em> (With some approximation)</em>

We can see that $\frac{1}{7} > \frac{1}{10}$ .

Rectangles are identical.

When we look upon $\frac{1}{10}$ it can be observed that each division on the coordinate plane have 2 boxes only...

Where as $\frac{1}{7}$ fraction consists more than 2 boxes ..

So we can say that the area covered for each division in $\frac{1}{7}$ is more than that of $\frac{1}{10}$ .

Mathematical concept:

If the numerator are same then to compare fractions we look upon denominators values.

Greater the denominator lesser is the fraction values.

So,

Finally we can say that 1/7 is greater than 1/10 .

5 0

3 years ago