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Sedbober [7]
2 years ago
12

I NEED HELP WITH THESE TWO QUESTIONS PLEASE!!!!!!! I"LL GIVE THE BRAIN THINGY TOO!!!!

Mathematics
1 answer:
pentagon [3]2 years ago
4 0

Answer:

1231.5 is correct =)

Step-by-step explanation:

You might be interested in
Question 11 options:
9966 [12]

Answer:

x = 12

length = 4 cm

width = 20 cm

Step-by-step explanation:

a = lw

Plug in the givens

80 = (x - 8)(x + 8)

Multiply

80 = x^2 - 64

Add 64 to both sides

144 = x^2

Take the square root of both sides

x = ±12

(The negative root is extraneous since the dimensions can not be negative)

x = 12

length = x - 8 = 4 cm

width = x + 8 = 20 cm

7 0
2 years ago
Please help me answer this.​
Kitty [74]

Answer:

128

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask!!!

3 0
3 years ago
If you answer God will bless you:
VashaNatasha [74]

Answer:

600 m³

Step-by-step explanation:

Given:

  • length of swimming pool = 30 m
  • width of swimming pool = 10 m
  • depth at deep end = 3 m
  • depth at shallow end = 1 m

To find the volume of the water in the pool, find the area of a cross section (see attached image) and multiply it by the width of the pool.

<u>Area of cross section</u>

= area of rectangle - area of triangle

= (3 × 30) - [1/2 × 30 × (3 - 1)]

= 90 - 30

= 60 m²

<u>Volume of pool</u>

= area of cross section × width

= 60 × 10

= 600 m³

6 0
2 years ago
If v = -11i + 3j, 2u − v =
kicyunya [14]

Answer: 2u+11i-3j

Step-by-step explanation: plug in -11i+3j for v

distribute negative sign

5 0
3 years ago
Find the values of x and y.
kupik [55]

Answer:

x=6, y=75

Step-by-step explanation:

Since the diameter of the circle is a perpendicular bisector to the chord, x and 6 must be equal and therefore x=6. It also bisects the arc, meaning that y=75. Hope this helps!

4 0
3 years ago
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