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Ann [662]
3 years ago
9

STAAR Review= the ratio of number of boy to girls is 5 to 4 . there are 60 girls how many boys is in the choir​

Mathematics
2 answers:
3241004551 [841]3 years ago
4 0

Answer:

75 boys

Step-by-step explanation:

\frac{5}{4} = \frac{x}{60}

4x = 300

x = 75

Brilliant_brown [7]3 years ago
4 0

Answer:

75

Step-by-step explanation:

5/4 = x/60

4x = 300               300 divided by 4 equals 75

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The width of a rectangle measures (3v-3w) centimeters, and its length measures (5v-9w) centimeters. Which expression represents
Alex17521 [72]

Answer: The Perimeter of the rectangle, P= 16v −24w

Step-by-step explanation:

Perimeter of a rectangle  = 2( L +W) =   2L + 2W

The width of a rectangle is given as  (3v-3w) centimeters,

its length is given as (5v-9w) centimetres

The Perimeter,P will now be  = 2L + 2W

P=2( 3v-3w) + 2( 5v-9w)

P=6v  −6w + 10v  - 18 w

 adding like terms

P=6v + 10v  −6w −18 w

P= 16v −24w

3 0
3 years ago
Solve the system by the substitution method -4x + 3y = -7 y = 2x - 5
bagirrra123 [75]

Answer: x=4 and y= 3


Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation


8 0
3 years ago
PLEASE HELP WILL MARK BRAINLIEST NO FAKE ANSWERS OR WILL BE REPORTED
GarryVolchara [31]

Answer:

height is 15

Y = L = Length

therefore 15y = (-x^2) +(300/20)

Step-by-step explanation:

15 = -x^2 +(300/20)

is the same as;

15 = (300/20) - (x^2)

we just add y to 15 and that can represent a division for x

y = L

Where area cm^2 can be shown as 300 as 15 x 20 = 300

when we divide by length we get the height as asked in the question.

7 0
3 years ago
the letter "T" makes up an estimated 8% of a certain language. Assume this still correct. A random sample of 1000 letters is tak
rusak2 [61]

Answer:

0.242

Step-by-step explanation:

p = 0.08, q = 1 − p = 0.92, and n = 1000.

The mean and standard deviation are:

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σ = √(pq/n) = 0.00858

The z score is:

z = (x − μ) / σ = -0.70

Using a calculator or z score table, the probability is:

P(Z < -0.70) = 0.242

8 0
3 years ago
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jasenka [17]

For this case we have that the quotient of 6 and a number, can be expressed as:

\frac {6} {x}

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Now we have that expression is subtracted from 100. Now, we can write the following:

100- \frac {6} {x}

ANswer:

Option A

4 0
3 years ago
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