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jok3333 [9.3K]
3 years ago
10

Someone plz help me :(

Mathematics
2 answers:
irina [24]3 years ago
8 0

Answer: 5 : 12

Step-by-step explanation:

the total flower = 5 + 7 = 12

so tulips to total flowers = 5 : 12

please give me a brainliest answer

tresset_1 [31]3 years ago
3 0

Answer:

the answer is D

Step-by-step explanation:

hopefully im right

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Would this be 192? if not can someone please explain how to do it?
Alinara [238K]

Answer:

For anything you have to ask question, right? How can someone understand if you just show the figure

5 0
2 years ago
Solve the system of equations. <br> 3x-4y=8 <br> 18x-5y=10
ipn [44]

Answer:

y = -2    x = 0

Step-by-step explanation:

1. 3x-4y = 8

2. 18-5y = 10

Multiply equation 1 by 6

3. 18x-24y = 48

Subtract equation 2 from equation 3

4. -19y = 38

        y = 38/-19

        y = -2

Sub y = -2 back into equation 1

      3x-4(-2) = 8

      3x + 8 = 8

      3x = 0

      x = 0/3

      x = 0

7 0
3 years ago
It takes 62 pounds of seed to completely plant an 8-acre field. How many pounds of seed are needed per acre
Mandarinka [93]
7.75 pounds of seed are needed per acre
4 0
3 years ago
How do I do question 9 &amp; 11? Please help thank you!
Novay_Z [31]
<h2>9.</h2><h3>Given</h3>
  • sphere with radius 15 cm
<h3>Find</h3>
  • linear approximation to the volume when the radius increases 0.4 cm
<h3>Solution</h3>

The equation for volume of a sphere is

... V = (4/3)π·r³

Differentiating gives

... dV = 4π·r²·dr

Filling in the given numbers gives

... change in volume ≈ 4π·(15 cm)²·(0.4 cm)

... = 360π cm³ ≈ 1130.97 cm³ . . . . . . volume of layer 4mm thick

<h2>11.</h2><h3>Given</h3>
  • an x by x by 2x cuboid with surface area 129.6 cm²
  • rate of change of x is 0.01 cm/s
<h3>Find</h3>
  • rate of change of volume
<h3>Solution</h3>

The area is that of two cubes of dimension x joined together. The area of each such cube is 6x², but the two joined faces don't count in the external surface area. Thus the area of the cuboid is 10x².

The volume of the cuboid is that of two cubes joined, so is 2x³. Then the rate of change of volume is

... dV/dt = (d/dt)(2x³) = 6x²·dx/dt

We know x² = A/10, where A is the area of the cuboid, so the rate of change of volume is ...

... dV/dt = (6/10)A·dx/dt = 0.6·(129.6 cm²)(0.01 cm/s)

... dV/dt = 0.7776 cm³/s

5 0
3 years ago
How to do number 15?
tatiyna
I think it would be 120 because it is 2 times 60 and they add up to 180 I may be wrong buts that’s what I would do
3 0
3 years ago
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