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RSB [31]
2 years ago
14

Thirty students have planned picnic. The ratio of girls to boys is 3 : 7. How many boys are there?

Mathematics
2 answers:
noname [10]2 years ago
7 0
10 i think sorry if its worng
marshall27 [118]2 years ago
5 0

Answer:

10

Step-by-step explanation:

10

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Q7) A rectangular piece of land measures 8 m by 5m. It is to be fenced with four lines of wire. What length of wire is needed fo
Harrizon [31]

Answer:

26 m

Step-by-step explanation:

Find what length is needed for fencing by finding the perimeter of the land.

Use the perimeter formula, P = 2l + 2w

Plug in the length and width:

P = 2l + 2w

P = 2(8) + 2(5)

P = 16 + 10

= 26

So, the length of wire needed is 26 m

8 0
2 years ago
What are the coordinates of D’ when the quadrilateral is reflected across the line y = x? On a coordinate plane, quadrilateral A
natita [175]

Answer:

D' (1, 3)

Step-by-step explanation:

When reflected across the y = x line, the "x" and "y" coordinates switch.

If D is (3, 1), then:

x = 3

y = 1

Switch the "x" and "y" values, and rewrite as (x, y).

x = 1

y = 3

D' (1, 3)

7 0
2 years ago
Solve the equation for y. Identify the slope and y-intercept then graph the equation.
viva [34]

Answer:

y = -3    m = -1     b = 3

Step-by-step explanation:

-3y=3x-9

To isolate the y variable, divide both sides by -3.

y = -1x + 3

y = -3

m = -1

b = 3

8 0
3 years ago
C = 14 a = 9 b = ?<br><br> if c is the hypotenuse of a right triangle, find the missing side.
NARA [144]
B = √(14² - 9²) = √(196-81) = √115 ≈ 10.7 units
6 0
3 years ago
A square has an area o 38 cm. How long to one of to dites?
yKpoI14uk [10]
9.5
and
9

a square has 4 sides and i’m ~assuming~ they’re equilateral, so take the area and divide it by 4.

im not 100% sure but maybe this will help a little bit!! :)
4 0
3 years ago
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