help please.., asap thanks

Answer:

x = 9

Step-by-step explanation:

must be 90deg in order to be perpendicular.

90 = 8x + 18

72 = 8x

9 = x

Answer:

a. 18

b. 45

Step-by-step explanation:

The question states that 2/5 of the class are girls which means 3/5 are boys:

[tex]\frac{3}{5} = 27[/tex]

Divide this value by 3 to get the value of [tex]\frac{1}{5}[/tex]:

27 ÷ 3 = 9

Multiply this by 5 to find [tex]\frac{5}{5}[/tex], the total pupils in the class:

9 x 5 = 45

As the number of girls is [tex]\frac{2}{5}[/tex] of the total pupils:

9 x 2 = 18

So there are 18 girls in the class which has a total pupil size of 45.

Hope this helps!

Step-by-step explanation:

according to question of ⅖ are girls than ⅗ are boys

so let the number of girls be x

so,

→ ⅗ of x = 27

→ x = 27 × 5/3 = 9×5 = 45

→ x = 45

a ) 45 - 27 = 18

than no. of girls is 18.

b) thier are 45 students in total.

hope this answer helps you dear...take care and may u have a great day ahead!

Answer:

-4.35

Step-by-step explanation:

3/8 X -4.5

3/8 (0.4) - 4.5

0.15 - 4.5

= -4.35

Answer:

-4.35

Step-by-step explanation:

You multiply three eights times .4 which gives you .15, then you subtract that from 4.5 which gives you 4.35

First Blank is CD

Second Blank is BC

Third Blank is ABC

Step-by-step explanation:

first blank = CD

second blank = BC

third blank = ∆ABC.

hope this helps you.

Answer C: 69

Step-by-step explanation:

1242 divided by 18 = 69

Answer: Simplify the expression.

9864

Answer:

y = -6/5x - 1

Step-by-step explanation:

6x+5y = -5

5y = -6x - 5

y = -6/5x - 1

Answer:

y=-[tex]\frac{6}{5}[/tex]x-1

Step-by-step explanation:

Start by moving x to the other side

5y=-5-6x

Divide by 5 to isolate y

y=-[tex]\frac{6}{5}[/tex]x-1

Answer:

60.28.

Step-by-step explanation:

We need the sine function because we are given the opposite side and  we need the hypotenuse.

sin 71 = 57 / x

Cross multiply

x * sin 71 = 57

x = 57 / sin 71

= 60.28.

Answer:

normal form

Step-by-step explanation:

Answer:

If a debtor wasn't able to pay his/her debt off they would be forced to become an indentured servant and work there debt off.

For English Catholics, who were discriminated at the time. They settled in the colony of Maryland to escape persecution under the hands of Anglicans.

Answer:

77=c=8

Step-by-step explanation:

Answer:

15

Step-by-step explanation:

140x(3/4)=105 went to sport club

105x(1/7)=15 went to sport club and art club

Answer:

change 2.5min into hours then to find speed take distance over time getting 1/24 as the answer

Answer:

4 is the answer

Step-by-step explanation:

have a nice day :)

Answer:

4

Step-by-step expla

Answer:

96% del 100 %

Step-by-step explanation:

de nada papu

Answer:

48÷8, -36÷-12

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

6x-3y=15 because you have to times through 6x and 3y

Answer:

11 but specifically it is 11.428571

Answer: 11

Step-by-step explanation: 100 divided by 8 3/4

If you want specific answer it's 11.4285714286

Queremos obtener la pendiente de dos lineas dadas, y en base a eso, determinar si son paralelas o no.

Las pendientes son para ambas lineas igual a -3/4, como ambas lineas tienen la misma pendiente y diferente ordenada al origen, podemos concluir que son paralelas.

-----------------------------

Una línea en general se escribe como:

y = a*x + b

Donde a es la pendiente y b es la ordenada al origen.

En este problema se nos dan las líneas:

3*x + 4*y - 2 = 0

3*x + 4*y + 6 = 0

Comencemos por reescribir esas líneas en la forma más general, para hacer esto, debemos aislar y en ambas ecuaciones:

y = (-3/4)*x + 2/4

y = (-3/4) - (6/4)

Aqui podemos ver que ambas pendientes son iguales a -3/4

Al final de la respuesta puedes ver el gráfico de ambas líneas.

Como ambas líneas tienen la misma pendiente, pero distintas ordenadas al origen, podemos concluir que son paralelas.

Esto mismo se puede observar en el gráfico de abajo.

Sí quieres aprender más, puedes leer:

https://brainly.com/question/19928130

Step-by-step explanation:

Since x=−23 x = - 2 3 is a vertical line, the slope is undefined

Answer:

Since x=−23 x = - 2 3 is a vertical line, the slope is undefined.

Step-by-step explanation:

Answer:

A, is close to being correct, I'm not sure if 1 is missing from it, but it should be A, if 1 is missing on purpose then I am wrong.

Step-by-step explanation:

=4ab*3√b

12ab√b is the answer, if it helped, could I get brainiest?

Answer:

40beads

Step-by-step explanation:

For this number you are supposed to find the LCM of the three numbers given that is 8,5 and 10

Hope that this helpful.

Have a great day.

Answer:

9g - 6

Step-by-step explanation:

7g - 9 + 2g + 3

9g - 9 + 3

9g - 6

Answer:

9g-6

Step-by-step explanation:

7g-9+2g+3= (7g+2g)+(-9+3)

Solve:

9g-6

Hope this helps!

Answer:

x = -66

Step-by-step explanation:

x-4 = -10 * 7

x - 4 = -70

x = -70 + 4

x = -66

Feel free to mark this as brainliest! :D

Answer:

Descending order:

14560g

13.6kg

13.25kg

12000g

a.) [tex]\frac{18}{5}[/tex]

b.) [tex]\frac{25}{2}[/tex]

Step-by-step explanation:

To find the difference between kg or g, either divide kg by 100 to convert to g, or multiply g by 1000 to convert to kg.

If we were to put everything into g:

14560g

13600g

13250g

12000g

See how they are still in the correct order?

If we were to put everything into kg:

14.56kg

13.6kg

13.25kg

12kg

Still in descending order!

___________________

Now to find out how to put the decimals into fractions:

Multiply by 10 (since there is only 1 digit behind the decimal, for every digit behind the decimal you multiply by another factor of 10, so if you have 2.55 you multiply by 100)

Following this we get:

36

125

Now divide by the same factor (10), we can't change the value of the number, just the way they look!

[tex]\frac{36}{100}[/tex]

[tex]\frac{125}{10}[/tex]

All that's left is it reduce!

[tex]\frac{18}{5}[/tex]

[tex]\frac{25}{2}[/tex]

And as you can see, we are back to the number I had put in the solution!

Answer:

18 x 4 = 72

72/2 = 36

36 is the answer

Step-by-step explanation:

Answer:

Q4) 256 roses

Q5) 40 hamburgers

Q6) 60 professors and 168 lecturers

Q7) 20 percussionist on the sideline

Step-by-step explanation:

Q4) First to set up a proportion you simply have to write a letter to represent the missing number. In this case we'll be using x. So it'll look something like these:

I) 160:5 = x:8 (using colon) or

II) 160/5 = x/8 (as two equal fractions)

You can use one of the two above.

I used the fractions here to solve the question.

After setting up the proportion, your going to cross multiply to get the value of x so its going to look like this:

160×8 = 5×x

1280 = 5x

5x = 1280

Now you have to divide on both sides to isolate x.

5x÷5 = 1280÷5

x = 256

Therefore your answer is 256 roses.

Q5) Use the same method in Q4.

Q6) This is where the proportion using colon comes in. It should look like this 5:14. 5 representing the professors and 14 the lecturers. Now it said that the total number of faculty members is 228.

First thing your going to do is add the proportion together. So basically 5+14=19.

After acquiring this your going to use the sum to divide the total number of faculty members which is 228. So 228÷19=12.

And finally you now have to multiply both sides of the proportion by 12. Therefore 5×12:14×12

60:168

To make sure the answer is right add the proportions of the working above which will give you the total number of faculty members. 60+168=228.

Your final answer: There are 60 professors and 168 lecturers.

Q7) Use the same method done in Q6.

I gave the answers to questions 5 and 7 because I wanted to give you the opportunity to try out the working outs yourself for a better understanding on your part and see if you can get the same answers as me. Anyway hope this helped.