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Sergio039 [100]
3 years ago
7

Can someone please help me for four and five I need to get it done in a few minutes please help

Mathematics
1 answer:
lakkis [162]3 years ago
5 0
4.)6       2(6) + 4
   9        2(9)+ 4
   15      2(15) + 4
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White paint cost £2.80 a litre.
riadik2000 [5.3K]
There are five parts to the ratio:
18 ÷ 5 is 3.6. 
Therefore you need 10.8l of white paint and 7.2l of blue paint.

10.8l * 2.80 = £30.24
7.2l * 3.50 = £25.20

The total is <span>£55.44</span>
8 0
3 years ago
Help please ...........<br>number 13, 14, 15<br>​
AfilCa [17]

Answer:

13.  108 inches

14.  not similar (sides have different ratios)

15.  68

Step-by-step explanation:

13. You have two relationships between length and width:

  2L + 2W = 336 . . . . . the perimeter is 336 inches

  L/W = 9/5 . . . . . . . . . .the ratio of length to width is 9/5

Multiplying the second equation by 5/9W, we get

  5/9L = W

Now we can substitute that into the first equation to get ...

  2L +2(5/9L) = 336

Multiplying by 9 gives us ...

  18L +10L = 3024

And dividing by 28 gives ...

  3024/28 = L = 108 . . . . inches

___

14. Shortest to longest, the ratios of sides are 6 : 8 : 9 and 2 : 4 : 5. There is no value that will multiply the first ratio to give the second ratio. For example, multiplying by 1/3 gives ...

  2 : 2 2/3 : 3 . . . . <u>not</u> 2 : 4 : 5

Similar triangles have the same side ratios. These do not, so they are not similar triangles.

__

15. MP is a midsegment of triangle JKL and parallel to base JL. A midsegment is half the length of the parallel base. Then JL is twice as long as MP. JL is 68 units long.

3 0
3 years ago
WILL MARK BRAINLIEST!!
scZoUnD [109]

Answer: See attached

Step-by-step explanation:

   [1]  Looking at the function, this will be a parabola.

    [2] We know that the x-intercepts, where the line hits the x-axis, will be -1 and 2 because of the factored part given

    -> (x + 1)(x - 2)

    -> (x + 1) gives us -1 and (x - 2) gives us 2

     [3] We will graph the given function.

    -> See attached

    -> <em>I kept the scale the same as the screenshot you gave (which is 5 to -5 for both the y-axis and the x-axis)</em>

6 0
2 years ago
1. To solve x/ 0.4 = 10 You would:
liubo4ka [24]

(c) multiply by 0.4

given \frac{x}{0.4} = 10

multiply both sides by 0.4 to eliminate the fraction

x = 0.4 × 10 = 4

and \frac{4}{0.4} = 10


8 0
3 years ago
(PLSSS HELP!!) Explain how the formula for the area of a square is related to the formula for the volume of a cube.
Serga [27]

x = side length

Area of a square = x^2

Area of a cube = x^3

The squaring operation is directly tied to the geometric shape of a square. The naming is not a coincidence. The same can be said about the cubing exponent being connected to a 3D cube in geometry.

Notice how x^3 can be written as x^2*x. Buried inside the volume of a cube formula is the area of a square. We can effectively rewrite that second equation as

volume of a cube = (area of a square)*x

where x is the side length of the cube and square

This idea of tying together the volume and area like this will be helpful when setting up other volume formulas (eg: volume of a prism).

5 0
2 years ago
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