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Nikolay [14]
3 years ago
14

A survey was conducted with high school students in each grade to see how many prefer math or science. Some of the data are show

n below. A 6-column table with 3 rows. The first column has no label with entries math, science, total. The second column is labeled 9 with entries blank, 40, 63. The third column is labeled 10 with entries 18, blank, 26. The fourth column is labeled 11 with entries blank, 15, 29. The fifth column is labeled 12 with entries blank, 32, 67. The sixth column is labeled total with entries 90, 95, 185. Which statement is true about the joint frequencies in this table?
Mathematics
2 answers:
tatyana61 [14]3 years ago
5 0

Answer:

Fourteen 11th graders prefer math and eight 10th graders prefer science.

lina2011 [118]3 years ago
3 0

Answer:

B.Fourteen 11th graders prefer math and eight 10th graders prefer science

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
A rectangular piece of metal is 15 in longer than it is wide. Squares with sides 3 in long are cut from the four corners and the
ziro4ka [17]

Answer:

The original dimensions of the piece of metal are

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Width: 21 inches

Step-by-step explanation:

Let

x ----> the original length pf the piece of metal

y ----> the original width pf the piece of metal

we know that

x=y+15 ----> equation A

The volume of the box is equal to

V=LWH

we have

V=1,350\ in^3

L=(x-3-3)=(x-6)\ in\\W=(y-3-3)=(y-6)\ in

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substitute in the formula of volume

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substitute equation A in equation B

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450=(y+9)(y-6)

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Solve the quadratic equation by graphing

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Answer:

See explanation

Step-by-step explanation:

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C. There are 5 planes in the figure: ABC, DEF, ABED, ACFD and BEFC

D. Three points are collinear if they lie on the same line. Collinear points are D,G and F or C,H and F

E. Coplanar points are those which lie in the same plane. Coplanar points are B, E, F and C or A, C, F and D or A, B, E and D or other combinations of four points lying in the same plane

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G. Planes BCH and DEF intersect by a line EF

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Step-by-step explanation:

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