please help me i will mark brainliest! :D

Answer:

X=.5, y=.75

Step-by-step explanation:

Answer:

Step-by-step explanation:

Method : Substitution Method

[tex]\begin{bmatrix}4x+7.8y=7.85\\ -8x-y=-4.75\end{bmatrix}\\\\[/tex]

Isolate in for 4x +7.8y=7.85 and solve

[tex]4x+7.8y=7.85\\\mathrm{Multiply\:both\:sides\:by\:}100\\\\4x\times\:100+7.8y\times\:100=7.85\times\:100\\\\Refine\\400x+780y=785\\\\\mathrm{Subtract\:}780y\mathrm{\:from\:both\:sides}\\400x+780y-780y=785-780y\\\\Simplify\\400x=785-780y\\\\\mathrm{Divide\:both\:sides\:by\:}400\\\frac{400x}{400}=\frac{785}{400}-\frac{780y}{400}\\\\Simplify\\x =\frac{157-156y}{80}\\\\\mathrm{Substitute\:}x=\frac{157-156y}{80}\\\\\begin{bmatrix}-8\times\frac{157-156y}{80}-y=-4.75\end{bmatrix}[/tex]

[tex]Simplify\\\\\begin{bmatrix}\frac{-157+146y}{10}=-4.75\end{bmatrix}\\\\Isolate\:y \:for \:\frac{-157+146y}{10}=-4.75\\\\\mathrm{Multiply\:both\:sides\:by\:}10\\\frac{10\left(-157+146y\right)}{10}=10\left(-4.75\right)\\\\-157+146y=-47.5\\\\-157+146y+157=-47.5+157\\\\Simplify\\146y=109.5\\\\\mathrm{Divide\:both\:sides\:by\:}146\\\frac{146y}{146}=\frac{109.5}{146}\\\\Simplify\\y=0.75\\\\\mathrm{For\:}x=\frac{157-156y}{80}\\\\\mathrm{Substitute\:}y=0.75\\\\x=\frac{157-156\times\:0.75}{80}\\\\x=0.5,\:y=0.75[/tex]

Answer:

D. 41°

Step-by-step explanation:

[tex](3x + 9) \degree = 132 \degree \\ (vertical \: \angle s) \\ 3x + 9 = 132 \\ 3x = 132 - 9 \\ 3x = 123 \\ x = \frac{123}{3} \\ x = 41 \\ \\ \because m\angle QRS =x\degree \\\therefore m\angle QRS = 41\degree [/tex]

Answer:

Gradient = 2

Step-by-step explanation:

Gradient of a line = Slope of the line

Since, slope of a line passing through two points [tex](x_1, y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by,

Slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

Given line in the graph passes through two points (1, 0) and (2, 2)

Therefore, slope or gradient of the line = [tex]\frac{2-0}{2-1}[/tex]

                                                                  = 2

Gradient = 2 will be the answer.

Answer:

C: 4 hours

Step-by-step explanation:

Mean = Σxn/n

Σx/n = ((2 × 4) + (3 × 5) + (4 × 6) + (5 × 3) + (6 × 3) + (7 × 0) + (8 × 1))/(4 + 5 + 6 + 3 + 3 + 0 + 1)

Σx/n = 88/22

Σx/n = 4 hours

9514 1404 393

Answer:

  21.07

Step-by-step explanation:

The tangent ratio is ...

  Tan = Opposite/Adjacent

For the given values, this is ...

  tan(36°) = x/29

Solving for x, we have ...

  x = 29·tan(36°)

  x ≈ 21.07

Answer:

[tex]2\sqrt{3[/tex]

Step-by-step explanation:

Step-by-step explanation:

just follow the answer good luck

Answer:

32 ftEach base floor tile is 5ft and there's 4 tiles so 5x4=20

Next,there are 4 walls each wall is 3ft 3x4=12

Now you add your answers which is 20+12=32

Hope that helps

Answer:

c is the answer

Step-by-step explanation:

Answer:

Step-by-step explanation:

First put the numbers from least to greatest: 1, 2, 2, 2, 3       2 is the mean.

Then you determine the distance each data value is from the mean.

1, 2, 2, 2, 3

1, 0, 0, 0, 1

Calculate the mean of the distances:  1 + 0 + 0 + 0 + 1 = 2

Then divide:  2 divided by 5 = 0.4

So your answer is 0.4 pound; on average, the weight of a box varies 0.4 pounds from the mean of 2 pounds

26 pieces

There are 26 pieces in total, and the cube has 8 corners and 6 centers.

Answer:

0.04938271605

Step-by-step explanation:

4/81

=0.04938271605

pls mark as brainliest

Answer:

0.04938271605

Step-by-step explanation:

4/81=0.04938271605

=0.05

The total answer by the process of round up

Answer:

Mean = 75 + 68 + 75 + 92 + 105/5

Mean = 415/5

Mean = 83

None of option is correct

[tex] \\ [/tex]

Answer:

162 sq. cm

Step-by-step explanation:

ph+ 2b

13 + 5 + 13 + 5 * 4 + 2 * 12

36 * 4 + 24

144 +24

168

Answer:

Without any background information on the text such as what the physical environment is and what the economic activities are. I can't really help you.

Answer:

answer is c

Step-by-step explanation:

angle m5 is 91

angle 1 = 89

angle 5= x

180=89-x

180=89+91

Answer:

c (91)

Step-by-step explanation:

trust me

Answer:

(3,3)

Step-by-step explanation:

A reflection of this across the y-axis is (-3,3). A reflection of Point A, (-3,-3), over the x-axis is also (-3,3).

Answer:

X=14

Step-by-step explanation:

Hope this helps , good luck ^^

Answer:

y > 2

Step-by-step explanation:

1) [tex]3(y+5)>21[/tex]

Divide both sides by 3.

2) [tex]y+5>7[/tex]

Move the constant to the right side and change it's sign.

3) [tex]y>7-5[/tex]

Subtract the numbers.

4) [tex]y>2[/tex]

Answer:

18 - 13x

Step-by-step explanation:

f g . 6 x 2 − 13 x + 6

Step-by-step explanation:

correct answer is

[tex] \binom{ - 5 \: 2}{6 \: - 2} [/tex]

Answer:

Step-by-step explanation:no

Answer:

<YXZ and <TUS

Step-by-step explanation:

Alternate exterior angles are angles that are found on opposite sides of a transversal and are found just outside each parallel line that the transversal crosses.

Looking at the diagram given and considering the options available, the angles that are alternate exterior angles are:

<YXZ and <TUS

Volume =  

1  πr2h

3

=  

1 ×π×22×7

3

=  29.321531433505 miles3

Answer: are cylinders similar to what its not asking so id.kkk

Step-by-step explanation:

Answer:

Step-by-step explanation:

59 kids are playing video games.. we are maybe missing some of the instructions?  or are there not any more?  

THANKS

HAHHAHAHAHAHAHAHAHAHAHAHAHAHA

Answer:

Step-by-step explanation:

Plot the given points and connect in pairs to get a triangle.

Visually we can say it is a right triangle as legs TD and ED seem perpendicular.

Let's confirm this by finding the slopes.

Slope of TD:

Slope of ED:

Product of the slopes is:

This confirms DT⊥ED

Correct choice is B

Answer:

choice D) x = 6.6

Step-by-step explanation:

sin 27° = 3/x

0.4540 = 3/x

x = 6.6