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Eva8 [605]
3 years ago
15

the radio of girls to boys in the junior high band is 5 to 7. At the beginning of the year, there were 72 students in the band.

By the end of the year, the ratio of girls to boys was 3 to 4 . I f there ara now 48 boys in the band, how many girls joined the band during rhe school year?
Mathematics
1 answer:
ANTONII [103]3 years ago
6 0
I don't really understand this question do u have a pic
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A neighborhood was given a vacant lot in the shape of a rectangle on which to build a park. The neighborhood is considering how
Montano1993 [528]

Answer:

<em>The triangle and trapezoid area formulas have One-half in them.</em>

<em>In the trapezoid formula, the bases are added.</em>

Step-by-step explanation:

<em>Topic: Plane Shapes</em>

Basically, the requirement of the question is to compare area of shapes. The shapes are

  1. Trapezoid
  2. Triangle
  3. Parallelogram
  4. Rectangle

The Area of a Trapezoid is (\frac{a + b}{2} )h where a and b are the bases of the trapezoid and h is the height

The Area of a Triangle is \frac{bh}{2} where b and h are the base and the height of the triangle respectively

The Area of a Parallelogram is b * h where b and h are the bases and the height of the parallelogram

The Area of a Rectangle is l * b where l and b are the length and the breadth of the triangle respectively

Checking option a through e

A. The triangle and trapezoid area formulas have One-half in them.

True; Area of a Triangle is \frac{bh}{2} while Area of a Trapezoid is (\frac{a + b}{2} )h

B. The parallelogram and rectangle formulas are both the same.

False; Area of a Parallelogram is b * h while Area of a Rectangle is l * b

C. In the parallelogram formula, the bases are added.

False; The basis are not added

Area of a Parallelogram is b * h

D. In the trapezoid formula, the bases are added.

True; Area of a Trapezoid is (\frac{a + b}{2} )h

E. In the triangle formula, the sides are added, then multiplied by One-half.

False; Area of a Triangle is \frac{bh}{2}

4 0
3 years ago
Read 2 more answers
Solve: <br> 8x-5y=11 4x-3y=5
Schach [20]

Answer:

y is 1 and x is 2

Step-by-step explanation:

please mark me as brainliest!!<3

5 0
2 years ago
Which one greater 8.20 or 8.2
nata0808 [166]
Neither because the 0 in 20 has no value so u dont count it.there equal
6 0
3 years ago
Read 2 more answers
Complete the two column proof
seraphim [82]
The answer is 12 I promise
8 0
3 years ago
How do you solve the system 3x-y z=5, x 3y 3z=-6, and x 4y-2x=12?
dlinn [17]
3x - y + z = 5 . . . (1)
x + 3y + 3z = -6 . . . (2)
x + 4y - 2z = 12 . . . (3)

From (2), x = -6 - 3y - 3z . . . (4)
Substituting for x in (1) and (3) gives
3(-6 - 3y - 3z) - y + z = 5 => -18 - 9y - 9z - y + z = 5 => -10y - 8z = 23 . .  (5)
-6 - 3y - 3z + 4y - 2z = 12 => y - 5z = 18 . . . (6)

(6) x 10 => 10y - 50z = 180 . . . (7)
(5) + (7) => -58z = 203
z = 203/-58 = -3.5

From (6), y - 5(-3.5) = 18 => y = 18 - 17.5 = 0.5
From (4), x = -6 - 3(0.5) - 3(-3.5) = -6 - 1.5 + 10.5 = 3

x = 3, y = 0.5, z = -3.5
8 0
3 years ago
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