All categories

2 years ago

PLZ HELP I WILL GIVE BRIANLY!

Mathematics

1 answer:

kumpel [21]2 years ago

8 0

Answer:36

Step-by-step explanation:

$\frac{4}{7} =\frac{48\\}{84}$

for every 7 students there are 4 girls, so for every 84 there must be 48

7*12=84

4*12=48

so, in all 84 students there are 48 girls

so amount of boys=84-48=36

there are 36 boys

You might be interested in

to troubleshoot a problem in a complex computer system you need to seek help from a ____ team. ( tech)

ioda

Here you need an adjective of the given word (Tech), so the answer is technical.

7 0

2 years ago

Read 2 more answers

Please answer quickly:

julia-pushkina [17]

You need to have variables one one side and constants on the other. ax - ax + by = c - ax by = c - ax by/b = (c - ax)/b y = (c - ax)/b

8 0

2 years ago

Read 2 more answers

F(x) = (1/4)^x. for x = -3

Trava [24]

Plug in -3 for x into the equation.

(1/4)^-3

And solve

(1/4)^-3 = 64

7 0

2 years ago

Read 2 more answers

A shop has a sale that offers 20% off all prices.On the final day reduce all the sale prices by 25%.Linz buys a radio on the fin

Mrac [35]

Answer:

40%

Step-by-step explanation:

Original price = x

Sale = 20% off

20% / 100 = 0.2 to convert from a percent to a decimal

Sale = x - 20% of x = x - 0.2x = 0.8x

Sale price = y = 0.8x

Reduction of sale prices = 25% = 0.25

Reduction = y - 25% of y = y - 0.25y = 0.75y

End price in terms of original price (x):

0.75y = 0.75(0.8)x

= 0.6x

End price = 0.6 or 60% of original price, coming out to a 100-60 = 40% overall percentage reduction

5 0

2 years ago

En un entrenamiento, Mariana metió 12 de los 15 tiros al arco que pateo. Carla tuvo una efectividad del 75%. Cual de las dos chi

Lady bird [3.3K]

Answer:

Mariana has better performance.

Step-by-step explanation:

We are given that in a training session, Mariana made 12 of the 15 shots on goal that she kicked and Carla had an effectiveness of 75%.

And we have to find which girl's performance is better.

Since it is stated that Carla had an effectiveness of 75%.

Similarly, we will find the effectiveness of Mariana;

Total shots available to Mariana = 15 shots

Number of shots on goal = 12

So, her effectiveness = $\frac{12}{15} \times 100$

= $4 \times 20$ = 80%

This shows that Mariana has a better performance as compared to Carla as 80% > 75%.

4 0

2 years ago