I don’t understand can someone please help.

Answer:

x = 4, y = 5

Step-by-step explanation:

[tex]2x-y=3\\4x-2y=6[/tex]

so:

[tex]4x - 2y = 6\\+ 5x + 2y = 30\\9x= 36\\x=4[/tex]

Substitute this into 2x - y = 3:

[tex]8-y=3\\y = 5[/tex]

Answer:

20, 21 and 22 are composite numbers

Step-by-step explanation:

20 is divisible by 2 4 5 and 10

21 is divisible by 3 and 7

22 is divisible by 2 and 11

Answer: I am pretty sure that it is true for some cases

Step-by-step explanation:

Both ABC and DEF are right triangles.

Because BC is congruent to EF, two of the corresponding angles of the triangle are congruent.

C is congruent to F

(I don't know the last one, In sorry, I hope this helps-)

Answer:

Thats hard

Step-by-step explanation:

Answer:

g. c= 0.5t+5

Step-by-step explanation:

i hope this helps :)

Answer:

The mean is 24.

Step-by-step explanation:

The mean is average so add the numbers together and divide by how many you added. 24+25+23+24+24=120  120/5=24

Answer:

Simple b is 2

Step-by-step explanation:

1.5(2)= 3

Answer:

2

Step-by-step explanation:

So you need to find how many times to multiply 1.5 to make 3.

Divide 3 by 1.5 and you will get 2.

Hope this helps! :D

Please mark Brainliest if this helps you!

The expected number of 5's would be rolled is 5 times if the Gavin rolls a fair dice 30 times.

It is defined as the ratio of the number of favourable outcomes to the total number of outcomes, in other words, the probability is the number that shows the happening of the event.

Total outcomes = {1, 2, 3, 4, 5, 6]

Total number of outcomes = 6

Favourable outcomes = {5}

Total number of favourable outcomes = 1

Probability of rolling 5 = 1/6

The expected number of 5's would be 30×(1/6) =  5 times

Thus, the expected number of 5's would be rolled is 5 times if the Gavin rolls a fair dice 30 times.

Learn more about the probability here:

brainly.com/question/11234923

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Answer:

43.96

Step-by-step explanation:

Formula for Circumference is: C=2πr

C=2•3.14•7 7 is radius bc it's half of diameter

2•3.14= 6.28

6.28•7= 43.96

hope this helps chu babe <3

Answer:40 yd ^2

Step-by-step explanation:

multiply the parts

BRAINLEST PLEASE PLEASE PLEASE

Answer: 40 yd²

Step-by-step explanation:

Find the area of the square:

4 × 4 = 16 yd²

Find the area of the triangle:

(6 × 8)/2 = 24 yd²

Add them together.

16 + 24 = 40 yd²

Answer:

1 inch represents 11 feet.

Step-by-step explanation:

Actual length is 363 feet

Scale model is 33 inches.

So, the scale factor is [tex]\frac{33}{363}[/tex]

Simplify it, we get [tex]\frac{1}{11}[/tex]

It means the scale factor is 1 inch for 11 feet.

That's 1 inch represents 11 feet.

Answer:

it would have to be Rectangle.

Step-by-step explanation:

if you split the shape in half vertically you won't get a circle, oval, and triangle isn't even anywhere in that picture.

so using the process of elimination it would have to be the first option. Rectangle.

Answer: 5 : 12

Step-by-step explanation:

There are 5 yellow candies and 12 green candies.

This means that for every 5 yellow candies in the box, there are 12 green candies.

The ratio is therefore:

Number of yellow candies : number of green candies

= 5 : 12

Answer:

5:12

Step-by-step explanation:

Answer:

They built 31500 m of the road.

Step-by-step explanation:

Given that,

The crew worked for 12.6 days.

The crew built 2.5 km of road each day.

We need to find the total length of the road they built. We can find the total length as follows :

L = 12.6 × 2.5 km

L = 31.5 km

or

L = 31500 m

So, they built 31500 m of road.

Answer:

Y  when X=36 and Z=2 is 90

Step-by-step explanation:

Given -

Y varies directly as X and inversely as the square of Z

[tex]y = \frac{kx}{z^2}\\30 = \frac{k *75}{5^2} \\30 = 75k/25[/tex]

[tex]k = 10[/tex]

As we know

[tex]y = \frac{kx}{z^2}[/tex]

Substituting value of X = 36 and Z = 2 in above equation, we get -

[tex]y = \frac{10*36}{2*2} \\y = 90[/tex]

Answer:

Wrong. PEMDAS exponents come before dividing

Step-by-step explanation:

Answer:

Formula : C = 2[tex]\pi[/tex]r    ( circumference = 2 × pi × radius )

Plug In Values :  ( circumference = 2 × 3.14 × 6 )

2 × 3.14 × 6 = 37.68  inches

Explanation:

We know that 6 inches is the radius as indicated by the line.  If the diameter is given ( the diameter goes all the way across the circle ) divide it by 2 to get the radius.

Tell me if you need any additional help!

Answer:

The regular polygon that has an interior angle sum of 2,340 is a regular polygon with 15 sides. so your answer is 15.

3 x 3

You are multiplying 3 by itself , so you have two 3’s.

Exponential form is the number raised to the total numbers:

Answer is 3^2

Answer:

El perímetro del triángulo rectángulo es aproximadamente 29.627.

Step-by-step explanation:

Las coordendas de los vértices del triángulo rectángulo son [tex]A(x,y) = (1,-2)[/tex], [tex]B(x,y) = (-8,4)[/tex] y [tex]C(x,y) = (5,2)[/tex]. En primer lugar, determinamos las longitudes de los segmentos AB, BC y AC por el Teorema de Pitágoras:

[tex]AB = \sqrt{(-8-1)^{2}+[4-(-2)]^{2}}[/tex]

[tex]AB \approx 10.817[/tex]

[tex]BC = \sqrt{[5-(-8)]^{2}+(2-4)^{2}}[/tex]

[tex]BC \approx 13.153[/tex]

[tex]AC =\sqrt{(5-1)^{2}+[2-(-2)]^{2}}[/tex]

[tex]AC \approx 5.657[/tex]

El perímetro del triángulo ([tex]p[/tex]) es la suma de todos estos segmentos:

[tex]p = AB + BC + AC[/tex]

[tex]p \approx 29.627[/tex]

El perímetro del triángulo rectángulo es aproximadamente 29.627.

Answer:

12

Step-by-step explanation:

Answer:

-6, -4, -3, and -1 only

Step-by-step explanation:

hope this helps!

Answer:

from the picture the answer is D.

Step-by-step explanation:

[tex]2 \ti4mes \f7rac{?}{?} [/tex]

to find x subtract 18x from 4x which will give you -14x=-36

divide both sides by -14

Answer:

x/3 is the correct

Step-by-step explanation:

hope you have a great day!

Answer:

8

Step-by-step explanation:

Answer:

down+down, up+down, down+up, up+up

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:15

Answer: The answer to your question is 6[tex]\sqrt{3}[/tex]

Step-by-step explanation:

To solve this problem we will use proportions. We will compare the largest right triangle and the medium size triangle.

                          Medium triangle                     Large triangle

hypotenuse                 y                                            9 + 3

adjacent size               9                                               y

- Write the proportions

                                  y/9 = (9 + 3)/y

-Solve for y

                                  y² = 9(12)

                                  y² = 108

                                  y =   [tex]\sqrt{180}[/tex]

-Find the prime factors of 108

                                  108  2

54 2

                                     27 3

                                      9  3

                                      3   3

                                       1

then,       108 = 2² 3³

-Expressthe root as fractional exponents

                                  2²/² 3²/² 3¹/²

-Simplification

                                   2(3)(3)¹/²

-Result

                                      6[tex]\sqrt{3}[/tex]