A school had 180 boys and 240 girls attending

(a) What is the ratio of boys to girls?
(b) What is the ratio of girls to boys?
(c) What is the ratio of students to boys?
(d) What is the ratio of girls to students?

Answer:

A:B:C = 5:8:6

Step-by-step explanation:

You don't have to change A, you only have to change B and C in the second ratio given. First, B is 8 and secondly, B is 4. You can multiply 4 in the second ratio and make it 8, but, remember, always do the same change to the other side too. So, if you change the 4 to 8 by multiplying by 2, multiply 3, which is C, by 2 too. Then, you get B:C as 8:6. Lastly, you get the final answer as 5:8:6.

Answer:

p=7

Step-by-step explanation:

pqrs equal to tuv perimeters =60

triangle=20×3

60

Trapezium=(p+8)+12+12+3p

60=4p+32

4p=28

p=7

Now the formula for the area of a circle is: πr². So we take 3 and just put it into the equation. π·3²=28.27. This is the area of the circle. Now the rate of change I think would just be the difference between the radius and the area of the circle so 28.27-3=25.27.

Answer:

true

Step-by-step explanation:

False, receive a pay raise of 5% then receive a pay cut of 5%. after the two changes in pay, your salary is changed.

Given that,
To justify the given statement is false or true.

The percentage is the ratio of the composition of matter to the overall composition of matter multiplied by 100.

here,
let the salary be x,
Salary after 5% raise = 1.05x
Salary after cut of 5% = [1 - 0.05] [1.05x]
Salary after a cut of 5% = 0.9975x
So the salary becomes 99.75% of the original salary x.

Thus, the given statement is false, receive a pay raise of 5% then receive a pay cut of 5%. after the two changes in pay, your salary is changed.

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Answer:

21/16

Step-by-step explanation:

hope it hepls pa brainlest na din po

Answer:

in fraction= 1 5/16

in decimal = 1.3125

Answer:

the answer is C 36

Step-by-step explanation:

Answer:

hellokdhsvksfj sks m fsn cjdwnsdd

Answer:

E

Step-by-step explanation:

The sum of the 3 angles in Δ PQT = 180°

Subtract the sum of the 2 given angles from 180° for ∠ PQT

∠ PQT = 180° - (45 + 75)° = 180° - 120° = 60°

The opposite angles in a parallelogram are congruent , then

∠ QRS = ∠ PQT = 60° → E

Answer:

1.5 hours to 525 km

Speed in km/h=

[tex]525 \div 1.5 = 350 \: kmph[/tex]

Step-by-step explanation:

XD

Answer:

5 4/9

Step-by-step explanation:

Convert a mixed number 2 19

to a improper fraction: 2 1/9 = 2 19 = 2 · 9 + 19 = 18 + 19 = 199

Answer:

7 / 9

Step-by-step explanation:

You cannot simplify this fraction any more. The two fractions have the same denominator you can just add the numerators.

Answer:

81 cm^2

Step-by-step explanation:

1. The area of a square is s^2, where s = length of side. In this case, s = 9.

Therefore, the area is 81 cm^2.

Answer:

81

Step-by-step explanation:

square amount of sides = 4

one side is 9cm

all square sides ae congurent (equal).

9 x 9

A = 81

Answer:

120

Step-by-step explanation:

120-20/10+2

=120-2+2

=120

Answer:

The answer is 5/12. I hope this helps you! :)

Answer:

C

Step-by-step explanation: C is the best equation

Answer:

Step-by-step explanation:

The graph is closer to a line:

According to above observation, the closest choice is C

Answer:

Step-by-step explanation:

Answer:

frist parentheses then subtract

The solution of equation  2(2x+3)-2 = 52(2x+3)−2 = 5 is x = -29/20.

The abbreviation PEMDAS is used to indicate the sequence of steps to be taken when resolving expressions with multiple operations. P is for "parentheses," E is for "exponents," M is for "multiplication," D is for division, A is for addition, and S is for subtraction.

The given equation:

2(2x+3)-2 = 52(2x+3)−2 = 5

Simplifying,

2(2x+3)-2 = 52(2x+3)−2 - 5

Using PEMDAS,

first, we solve the parentheses

4x+6 - 2 = 104x + 156 - 2 - 5

4x+4 = 104x + 149

104x - 4x = 4 - 149

100x = -145

x = -145/100

x = -29/20

Therefore, the value of x is  -29/20.

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Step-by-step explanation:

Given:

Find: Z to two decimal places

[tex] {a}^{2} + {b}^{2} = {c}^{2} \\ {x}^{2} + {z}^{2} = {y}^{2} \\ {70}^{2} + {z}^{2} = {106}^{2} \\ 4900 + {z}^{2} = 11236 \\ {z}^{2} = 11236 - 4900 = 6336 \\ z = \sqrt{6336} = 79.60[/tex]

Answer:

what's the problem i know that "tickets for the school play cost 6 dollars for the adults and 3.50 for the students" but you didn't say how many people are going

Step-by-step explanation:

Answer:

Step-by-step explanation:

1)  AB ≅ AD    Given

BC ≅ BD

2) Given

3) AC ≅ CA         Reflexive property

ΔABC ≅ ΔADC  

4) S S S Congruent

5)∠B ≅∠D            CPCTC

Answer:

-2

Step-by-step explanation:

y+z-2y

First substitue y and z for 4 and 2.

4+2-2(4)

Then using PEMDAS, multiply.

4+2-8

Then solve normally.

-2

Answer:

4 hours

Step-by-step explanation:

12 x 4 = 48

Step-by-step explanation:

<3 = 47°, alternate angle.

<2 = 52° , alternate angle.

<5=180-47-52=81°, linear pair.

<1= 180-52=128°, alternate angle, linear pair.

<4= 180-47= 133°, alternate angle, linear pair.

hope this helps you.

Answer:

50.37

Step-by-step explanation:

Answer:

answer for 10th question is 121

Step-by-step explanation:

2(a+b)+a+b/2+(a+b)^2-4

=2(10)+10/2+(10)^2-4

=20+5+100-4

=125-4

=121

Answer:

10.  121      11.  Hamburger = $1.43

Step-by-step explanation:

2(a + b) + (a + b)/2 + (a + b)² - 4

2(10) + (10)/2 + (10)² - 4

20 + 5 + 100 - 4

25 + 100 - 4

125 - 4 = 121

11.   Let H = Hamburger and Soft Drink = D

          H + D = $2.23

      2 H + 3D = $5.26

H + D = $2.23        Solve for D

D = $2.23 - H        

2H + 3D = $5.26     Now substitute the value of H into the second equation.

2H + 3($ 2.23 - H) = $5.26

2H + $6.69 - 3H = $5.26

 -H + $6.69 = $5.26

 -H = - $1.43

  H = $1.43

Basically...

4n - 8 = 14n + 12

Simply collect like terms,

4n-14n=12+8

-10n=20

Divide both sides by -10

n= -2

Please mark BRAINLIEST.

Step-by-step explanation:

[tex]4n - 8 = 14n - 4n \ \\ - 8 - 4 = 14n - 4n \\ - 20 = 10n \\ - \frac{20}{10} = n \\ n = - 2[/tex]