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Arte-miy333 [17]
3 years ago
13

30 TENS MINUS 3 TENS 3 TENTHS

Mathematics
2 answers:
-BARSIC- [3]3 years ago
5 0
Uhm i think its 300 - 30 + 30 so the answer is 300
ipn [44]3 years ago
5 0
In numbers,
300-30.3 is 269.7
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(a) Reflect the point (7, -9) across the y-axis:
UkoKoshka [18]

Answer:

(-7,-9) and (7,9)

Step-by-step explanation:7,-9 so we do across the x so you need a graph for this now x goes left so we plot the coordinates in the third box 7,-9 is in the 4 box so after we plotted that you can see it reflects.Now y coordinate since the y line goes up we plot the coordinates on top of the 4 box where our original coordinates stay now it should be 7,9 the y becomes positive which is 9.

This is not a web answer i answered myself took me some time!

8 0
3 years ago
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Pleaseeeee helpppppp <333
alexandr1967 [171]

Step-by-step explanation:

  1. <em><u>6</u></em><em><u>4</u></em><em><u>+</u></em><em><u>7</u></em><em><u>2</u></em><em><u>+</u></em><em><u>4</u></em><em><u>x</u></em><em><u>+</u></em><em><u>2</u></em><em><u>0</u></em><em><u>=</u></em><em><u>1</u></em><em><u>8</u></em><em><u>0</u></em><em><u>(</u></em><em><u>Sum </u></em><em><u>of </u></em><em><u>angles </u></em><em><u>of </u></em><em><u>a </u></em><em><u>triangle </u></em><em><u>)</u></em>
  2. <em><u>1</u></em><em><u>5</u></em><em><u>6</u></em><em><u>+</u></em><em><u>4</u></em><em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>8</u></em><em><u>0</u></em>
  3. <em><u>4</u></em><em><u>x</u></em><em><u>=</u></em><em><u>1</u></em><em><u>8</u></em><em><u>0</u></em><em><u>-</u></em><em><u>1</u></em><em><u>5</u></em><em><u>6</u></em>
  4. <em><u>4</u></em><em><u>x</u></em><em><u>=</u></em><em><u>2</u></em><em><u>4</u></em>
  5. <em><u>X=</u></em><em><u>2</u></em><em><u>4</u></em><em><u>/</u></em><em><u>4</u></em>
  6. <em><u>X=</u></em><em><u>6</u></em>

<em><u>Therefore</u></em><em><u> </u></em><em>The </em><em>value</em><em> </em><em>of </em><em>X </em><em>is </em><em>6</em><em> </em><em>degree</em><em>.</em>

6 0
2 years ago
only 6 of the 75 trees in the park are at leat 30 feet tall. what percent of the trees are over 30 feet?
ipn [44]

Answer:

   8 %

Step-by-step explanation:

To find the percent of trees that are over 30 ft tall, take the number of trees that are over 30 ft tall over the number of tree

Percent = trees over 30 ft tall/ total number of trees

              = 6/75

              =.08

Change this to a percent by multiply by 100%

             .08 * 100%

                    8 %

4 0
3 years ago
* please help 20 points !! *<br> which statement can be proved if you are given that SK≌LR?
SOVA2 [1]
I believe it would be D) ST ≈ TR
6 0
3 years ago
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Which of the following sets are subspaces of R3 ?
Ratling [72]

Answer:

The following are the solution to the given points:

Step-by-step explanation:

for point A:

\to A={(x,y,z)|3x+8y-5z=2} \\\\\to  for(x_1, y_1, z_1),(x_2, y_2, z_2) \varepsilon A\\\\ a(x_1, y_1, z_1)+b(x_2, y_2, z_2) = (ax_1+bx_2,ay_1+by_2,az_1+bz_2)

                                        =3(aX_l +bX_2) + 8(ay_1 + by_2) — 5(az_1+bz_2)\\\\=a(3X_l+8y_1- 5z_1)+b (3X_2+8y_2—5z_2)\\\\=2(a+b)

The set A is not part of the subspace R^3

for point B:

\to B={(x,y,z)|-4x-9y+7z=0}\\\\\to for(x_1,y_1,z_1),(x_2, y_2, z_2) \varepsilon  B \\\\\to a(x_1, y_1, z_1)+b(x_2, y_2, z_2) = (ax_1+bx_2,ay_1+by_2,az_1+bz_2)

                                             =-4(aX_l +bX_2) -9(ay_1 + by_2) +7(az_1+bz_2)\\\\=a(-4X_l-9y_1+7z_1)+b (-4X_2-9y_2+7z_2)\\\\=0

\to a(x_1,y_1,z_1)+b(x_2, y_2, z_2) \varepsilon  B

The set B is part of the subspace R^3

for point C: \to C={(x,y,z)|x

In this, the scalar multiplication can't behold

\to for (-2,-1,2) \varepsilon  C

\to -1(-2,-1,2)= (2,1,-1) ∉ C

this inequality is not hold

The set C is not a part of the subspace R^3

for point D:

\to D={(-4,y,z)|\ y,\ z \ arbitrary \ numbers)

The scalar multiplication s is not to hold

\to for (-4, 1,2)\varepsilon  D\\\\\to  -1(-4,1,2) = (4,-1,-2) ∉ D

this is an inequality, which is not hold

The set D is not part of the subspace R^3

For point E:

\to E= {(x,0,0)}|x \ is \ arbitrary) \\\\\to for (x_1,0 ,0) ,(x_{2},0 ,0) \varepsilon E \\\\\to  a(x_1,0,0) +b(x_{2},0,0)= (ax_1+bx_2,0,0)\\

The  x_1, x_2 is the arbitrary, in which ax_1+bx_2is arbitrary  

\to a(x_1,0,0)+b(x_2,0,0) \varepsilon  E

The set E is the part of the subspace R^3

For point F:

\to F= {(-2x,-3x,-8x)}|x \ is \ arbitrary) \\\\\to for (-2x_1,-3x_1,-8x_1),(-2x_2,-3x_2,-8x_2)\varepsilon  F \\\\\to  a(-2x_1,-3x_1,-8x_1) +b(-2x_1,-3x_1,-8x_1)= (-2(ax_1+bx_2),-3(ax_1+bx_2),-8(ax_1+bx_2))

The x_1, x_2 arbitrary so, they have ax_1+bx_2 as the arbitrary \to a(-2x_1,-3x_1,-8x_1)+b(-2x_2,-3x_2,-8x_2) \varepsilon F

The set F is the subspace of R^3

5 0
3 years ago
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