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trasher [3.6K]
3 years ago
12

The ratio on the number of girls to the number of boys in a stem class is 6 to 5. there are 40 boys in the stem class. how many

girls are in the stem class? (IM GIVING BRAINLIEST, AND PLS EXPLAIN UR ANSWER!!)
Mathematics
2 answers:
tatyana61 [14]3 years ago
6 0

Answer:

there are 30 girls in the stem class

ella [17]3 years ago
4 0

Answer:

48

Step-by-step explanation:

girls:boys

6. :. 5

? :. 40

cross multiplication:

40×6÷5=48

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(3x + 5y = 7<br> { 4x - y = 5
dalvyx [7]

Answer:

Step-by-step explanation:

Solution by substitution method

3x+5y=7

and 4x-y=5

Suppose,

3x+5y=7→(1)

and 4x-y=5→(2)

Taking equation (2), we have

4x-y=5

⇒y=4x-5→(3)

Putting y=4x-5 in equation (1), we get

3x+5y=7

⇒3x+5(4x-5)=7

⇒3x+20x-25=7

⇒23x-25=7

⇒23x=7+25

⇒23x=32

⇒x=32/23

→(4)

Now, Putting x=32/23

in equation (3), we get

y=4x-5

⇒y=4(32/23)-5

⇒y=(128-115)/23

⇒y=13/23

∴y=13/23   and x=32/23

5 0
2 years ago
P-21=34 P=34-21 P=13<br>What is the value of p?<br>​
vredina [299]

Simplifying

P + -21 + -21 = 34 + -21  

-21 + -21 + P = 34 + -21

Combine like terms: -21 + -21 = -42

-42 + P = 34 + -21

Combine like terms: 34 + -21 = 13

-42 + P = 13

Solving

-42 + P = 13

Solving for variable 'P'.

Move all terms containing P to the left, all other terms to the right.

Add '42' to each side of the equation.

-42 + 42 + P = 13 + 42

Combine like terms: -42 + 42 = 0

0 + P = 13 + 42

P = 13 + 42

Combine like terms: 13 + 42 = 55

P = 55

Simplifying

P = 55

3 0
3 years ago
Consider the quadratic function f(x) = x2 – 5x + 6.
PolarNik [594]
A = 2
b = -5
c = 6

The coefficients are 2 and -5
The constant is 6
5 0
3 years ago
QUIL - Level G p) The total cost of a pizza and 3 drinks is $19. The price of the pizza is $10 and each drink is the same price,
garri49 [273]

Answer:

a

Step-by-step explanation:

4 0
3 years ago
Help please ppl Guys
Evgesh-ka [11]
The area of a triangle is BH/2 (base x height / 2).
Base = 9
Height = 5

9*5 = 45;
45 / 2 = 22.5

Your area is 22.5 ft

I hope this helps!
8 0
3 years ago
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