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anyanavicka [17]
3 years ago
7

THE RATIO OF SEVENTH GRADERS TO EIGHTH GRADERS PARTICIPATING IN THE SCIENCE FAIR IS 4:3 . THERE ARE 18 EIGHT GRADERS PARTICIPATI

NG IN THE SCIENCE FAIR. HOW MANY 7TH GRADERS ARE THERE?
Mathematics
1 answer:
slamgirl [31]3 years ago
5 0
4:3 > 8:6 > 12:9 > 16:12 > 20:15 > 24:18 the answer must be 24 seventh graders are there 
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If you can answer this question you'll get brainliest.
igomit [66]

Answer:

Volume = 66 cm³

Step-by-step explanation:

Area of the oblique triangular prism = Area of the triangular base × Vertical height from the base

From the figure attached,

Area of the triangular base = \frac{1}{2}(\text{Base})(\text{Height of the right triangle})

                                             = \frac{1}{2}(3)(4)

                                             = 6 cm²

Vertical height of the given oblique prism = 11 cm

Volume of the given oblique prism = 6 × 11

                                                          = 66 cm³

4 0
3 years ago
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The area of a trapezoid is 243cm2. The height is 18cm and the length of one of the parallel sides is 10cm. Find the length of th
Irina18 [472]

Answer:

Side_2 = 17\ cm

Step-by-step explanation:

Given

Shape: Trapezoid

Area = 243cm^2

Height = 18cm

Side_1 = 10cm

Required

Determine the length of the second parallel side

The area of a trapezoid is:

Area = \frac{1}{2}(Side_1 + Side_2) * Height

Substitute values for Area, Height and Side1

243 = \frac{1}{2}(10 + Side_2) * 18

Multiply both sides by 2

2 * 243 = 2 * \frac{1}{2}(10 + Side_2) * 18

486 = (10 + Side_2) * 18

Divide both sides by 18

27 = 10 + Side_2

Side_2 = 27 - 10

Side_2 = 17\ cm

Hence;

<em>The length of the second parallel side is 17cm</em>

8 0
3 years ago
What is the area of the triangle 3,4,5
Gwar [14]
There is no picture or anything
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Find the values of the six trigonometric functions of theta based on the following constraints:
Alexxx [7]
Hello,

1)
sin x=3/5==>x=126.869897...° (since in quadrant II)

2)==>cos x<0
cos x=-√(1-sin ² x)=-√(1-9/25)=-4/5

tan x=(3/5)/(-4/5)=-3/4

cotg x=-4/3 =1/tan x

sec x=1/cos x=-5/4

cosec x=1/sin x=5/3

8 0
3 years ago
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Which list is in order from least to greatest?
mr_godi [17]
Answer is: <span> order from least to greatest is </span>1,94·10⁻⁵, 1,25·10⁻², 6·10⁴, 8·10⁴.
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1,25·10⁻² is equal to 0,0125.
6·10⁴ is equal to 60000.
8·10⁴ is equal to 80000.
8 0
3 years ago
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