ANSWER THE QUESTION FOR BRAINLIEST

Answer:

x = 1/2 y = -1/3

Step-by-step explanation:

Split it into 2 equations:

10x-9y=8

and

21y+15x=0.5

10x - 9y = 8

Step 1: Divide both sides by 10:

x = (8+9y)/(10)

Substitute x = (8+9y)/(10) into 21y+15x=0.5 :

21y + (3(8+9))/(2) = 0.5

Solve for y

y= -1/3

Substitute y= -1/3 into x = (8+9y)/(10)

x = 1/2

Answer:

These are obtuse, right, and acute *triangles*

Step-by-step

Keyword: Triangle.

Hope that helped.

(Saw that this was one minute ago so might as well help, right?

Answer:

432 inches = 35 feet and 3 inches

Answer:

I think its b

Step-by-step explanation:

Answer:

600

Step-by-step explanation:

25x3 (per month) therefore it would be 75 times 8

Answer:

164025

Step-by-step explanation:

Answer:

square root of 45/4, square root of 20, 4.5, 45/11

Step-by-step explanation:

square root of 45/4=3.354

square root of 20=4.47

4.5

45/11=4.9

Answer:

The calculated value Z = 1.39 <1.96 at 0.05 level of significance

The null hypothesis is accepted

Step-by-step explanation:

Step(i):-

Given that the mean of the Population = 43

Given that the mean of the sample = 47

Given that the standard deviation of the Population = 25

Given that the sample size 'n' = 76

Step(ii):-

Null hypothesis:H₀: μ = 43

Alternative Hypothesis: H₁: μ ≠ 43

Test statistic

           [tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]

          [tex]Z = \frac{47-43 }{\frac{25}{\sqrt{76} } }[/tex]

          Z = 1.39

Level of significance = 0.05

The critical value = 1.96

Final answer:-

The calculated value Z = 1.39 <1.96 at 0.05 level of significance

The null hypothesis is accepted

Answer:

x = 7 hope this helps !!!

Step-by-step explanation:

Type 1: You know the short leg (the side across from the 30-degree angle). Double its length to find the hypotenuse. You can multiply the short side by the square root of 3 to find the long leg.

Type 2: You know the hypotenuse. Divide the hypotenuse by 2 to find the short side. Multiply this answer by the square root of 3 to find the long leg.

Type 3: You know the long leg (the side across from the 60-degree angle). Divide this side by the square root of 3 to find the short side. Double that figure to find the hypotenuse.

this is a type 3 triangle, and you can find the length of y from it, it being 14, and x is half of y, being 7

Tan (30) = x/7[tex]\sqrt{3}[/tex]

Tan (30) times [tex]7\sqrt{3}[/tex] = x

7 = x

Have a great day,

and thank you for the support - Oceanbreeze24

Answer:

y=5x+25

Step-by-step explanation:

The slope is (30-25)/(1-0)=5.

Also, the y-intercept is 25.

So, the equation is y=5x+25.

Answer:

She can only use one gigabite.

Step-by-step explanation:

Answering must find the inequalities

Step-by-step explanation:

Answer:

supplementary angle to x = 180 -  31 - 43 - 32 = 74°

x = 180° - 74° = 106°

Answer:

40

Step-by-step explanation:

Slope is 2, y intercept 0

y= 2x

y= 2(20)

y= 40

Step-by-step explanation:

Answer: An algebraic expression is a mathematical expression that consists of variables, numbers, and operations. We can use algebraic expressions to represent unknown number situations involving addition, subtraction, multiplication, and division.

Answer:

Answer: An algebraic expression is a mathematical expression that consists of variables, numbers, and operations. We can use algebraic expressions to represent unknown number situations involving addition, subtraction, multiplication, and division.

Step-by-step explanation:

Its The sample

EDG

Answer:

1754

Step-by-step explanation:

Hail Hydra!

Answer:

I think it's 1,754

Step-by-step explanation:

I'm not 100% sure, sorry if it's wrong.

PEMDAS

Parenthesis first: (7x6=42)

Next: 6x7x42= 1,764

Lastly: 1,764-10=1,754

1,754

If this helped, then please give me crown, rate, and heart.

Thank you! ^-^

Step-by-step explanation:

We have 2 Semicircular. area of each one :

[tex]\pi \: \times \: r[/tex]

r = 2.5ft and pi=~3 ==> 7.5×2=15ft (area of two Semicircular)

the area of triangle = 5 + 5 + 6 = 16ft

area of the figure = 16 + 15 = 31ft

Answer:

lower

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

it is just right my brudda

Answer:

90pi

Step-by-step explanation:

SA = pi r l +B

we know the radius is 5

We need to find the slant height using the Pythagorean theorem

a^2+b^2 = c^2

5^2+12^2 = l^2

25+144= l^2

169 = l^2

Taking the square root of each side

sqrt(169) = sqrt(l^2)

13 = l

B is the area of the base

B = pi r^2 = pi (5)^2 = 25 pi

SA = pi r l +B  = pi (5)*13 + 25pi

                       =65pi +25pi = 90pi

Answer:

90 pi

Step-by-step explanation:

Just in case the other answer was confusing. Just put it in, and it marked it right. 90 is the answer

SA= 90

Answer:

(10x - 4) + ( -7 + x)

10x-4-7+x=10x-11 is your answer

Answer:

Ok, so it seems

erm

ok, even and odd

it is an odd one because the power is odd (3rd degree)

so then the ends go in different directions

and since leading coefient (5 in the 5x^3) is positive, it goes from bottom left to top right

so

A is false

B is false

C and D are true

answer is C and D

Answer:

336 m squared

Step-by-step explanation:

To do this we can first find the area of one face of the prism and multiply it by all the other triangular faces

(4*12)*4=192

then can find the area of the square underneath

12*12=144

then add them together

192+144=226

Answer:

48 cm²

Step-by-step explanation:

Area of trapezoid = [tex]\frac{a + b}{2}[/tex] × h

Area = (8 + 16)/2 x 4

Area = 24/2 x 4

Area = 12 x 4

Area = 48 cm²

Answer:

Step-by-step explanation:

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

(

−

∞

,

∞

)

Set-Builder Notation:

{

x

|

x

∈

R

}

Locate the vertex of the parabola.

Tap for more steps...

(

0

,

9

)

The range of a parabola that opens down starts at its vertex  

(

0

,

9

)

and extends to negative infinity.

Interval Notation:

(

−

∞

,

9

]

Set-Builder Notation:

{

y

|

y

≤

9

}

Determine the domain and range.

Domain:  

(

−

∞

,

∞

)

,

{

x

|

x

∈

R

}

Range:  

(

−

∞

,

9

]

,

{

y

|

y

≤

9

}

image of graph

Answer:

Follow Sammy Revv on Spotify and you'll get a 100% on your test

Step-by-step explanation: