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ale4655 [162]
3 years ago
10

HELP ON 7,8,9,10 EXPLAIN OR GIVE ME HINTS NO ANSWERS

Mathematics
1 answer:
aliya0001 [1]3 years ago
7 0
7. Try drawing 2 lines parallel from each other. What shape do you think of first?
8. To find the perimeter, you add up all of the sides.
9. A parallelogram has 2 pairs of parallel sides.
10. A rhombus is basically a square; all even sides. A rectangle has 2 pairs of parallel sides and the sides are not all the same. 
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Generate a frequency table using 3,12,25,2,3,6,17,17,15,13,20,12,21,18,19
KatRina [158]

Answer:

A frequency table is given below.

Step-by-step explanation:

Given the data

3,12,25,2,3,6,17,17,15,13,20,12,21,18,19

  • The frequency distribution table provides us a general snapshot of the data using which we may be able to find certain patterns.

A frequency table is given by:

Class                        Count                           Percentage

0 - 6                              4                                 26.7

7 - 13                             3                                  20

14 - 20                          6                                  40

21 - 27                          2                                  13.3

Total                            15                                   100

6 0
2 years ago
An architect is constructing a model building by using a ratio os 1:300. If the height of the scale model is 3 1/2 inches what i
atroni [7]
\bf \cfrac{model}{actual}\qquad 1:300\qquad \cfrac{1}{300}\qquad \qquad \cfrac{3\frac{1}{2}}{a}=\cfrac{1}{300}\implies \cfrac{\frac{3\cdot 2+1}{2}}{a}=\cfrac{1}{300}
\\\\\\
\cfrac{\quad \frac{7}{2}\quad }{a}=\cfrac{1}{300}\implies \cfrac{\quad \frac{7}{2}\cdot 300\quad }{1}=a\implies 1050=a
7 0
3 years ago
A train leaves Los Angeles at 2 p.m. heading north at 50 mph. If the next train leaves three hours later and also heads north at
Mamont248 [21]
Since the first train has been travelling for 3 hours, we have the following equations:
d=50t+3*50=50t+150
d=60t

We want to know when they will be equal, so set these equal to eachother:
60t=50t+150
10t=150
t=15

So 15 hours after the second train leaves, they will be at the same distance. This is at 8AM since the second train leaves at 5PM. 
5 0
3 years ago
Read 2 more answers
What is the missing length??
amid [387]

Answer

The missing length is 10

Step-by-step explanation:

Represent the missing length with x

The sides of the given shape are directly proportional.

Mathematically:

(15 + x) to (12 + 8) and x to 7

Represent as a ratio:

(15 + x) : (12 + 8) = x : 8

15 + x : 20= x : 8

Convert to fraction

\frac{15 + x}{20} = \frac{x}{8}

Cross Multiply:

(15 + x)*8 = 20 * x

120 + 8x = 20x

Collect Like Terms

20x - 8x = 120

12x = 120

Solve for x

x = \frac{120}{10}

x = 10

<em>The length of the missing side is 10</em>

4 0
3 years ago
A cabinet door has a perimeter of 62 inches its area is 228 in.² what are the dimensions of the door
Vlad1618 [11]
P=2(L+W)
A=LW


given
P=62
62=2(L+W)
divide 2
31=L+W
minus W
L=31-W

sub into other one
A=LW
A=(31-W)(W)
228=31W-W^2
times -1
W^2-31W=-228
add 228 both sides
W^2-31W+228=0
factor
what 2 numbers multiply to get 228 and add to get -31
-19 and -12
(W-19)(W-12)=0
set to zero

W-19=0
W=19

W-12=0
W=12

sub back

L=31-W
L=31-12
L=19
or
L=31-19
L=12

the doorway is 12in by 19in

4 0
3 years ago
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