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3 years ago

14.

Mathematics

2 answers:

Anestetic [448]3 years ago

6 0

Step-by-step explanation:

Solution,

According to question,

Length= 12 cm

Breadth= (12-2) cm= 10 cm

Now,

By using the formula of area of rectangle, we get

Area of rectangle= Length×breadth

Area of rectangle=12 cm×10 cm

Area of rectangle=120 cm²

Hence, the area of the rectangle is 120 cm².

mariarad [96]3 years ago

3 0

Answer :

Rectangular area = :

12 × ( 12 - 2 ) = 120 ( cm2 )

So choose the answer is : D

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9th grade alg 1 number 43 and work please!

Darya [45]

Answer:

The rule is y = -7x + 5

→ Other values of x;

-9

→ Other values of y;

5
-2
-9
-12
28
68
-170

Step-by-step explanation:

» Take points (1, -2) and (3, -12) from the table.

☑ General equation of a line is y = mx + c

m is the slope
c is y-intercept

✍ For slope, m :

${ \tt{slope = \frac{ - 12 - 2}{3 - 1} }} \\ \\ { \tt{slope = \frac{ - 14}{2} }} \\ \\ { \tt{m = - 7}}$

✍ For y-intercept, c :

${ \tt{y = mx + c}}$

» Taking point (1, -2):

${ \tt{ - 2 = (1 \times - 7) + c}} \\ { \tt{c = - 2 + 7}} \\ { \tt{c = 5}}$

${ \boxed{ \tt{y = - 7x + 5}}}$

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3 years ago

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Over the first five years of owning her car, Gina drove about 12,200 miles the first year, 16,211 miles the second year, 12,050

attashe74 [19]

The answer is mean = 13,027; median = 12,200; no mode

Let's rearrange values from the lowest to the highest:
11350, 12050, 12200, 13325, 16211

The mean is the sum of all values divided by the number of values:
(11350 + 12050 + 12200 + 13325 + 16211)/5 ≈ 13027

The median is the middle value. If there is an odd number of data, then the median is the value in the middle. In the data set 11350, 12050, 12200, 13325, 16211, the median (the middle value) is 12200

The mode is the value that occurs most frequently. Since none of the number does not occur most frequently, there is no mode.

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3 years ago

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The side lengths of a triangle are 6, 8 and 12. Is this a right triangle?

Anna [14]

Answer:

No it's not. 6 to the 2nd power + 8 to the 2nd power ≠ 12 to the 2nd power

Step-by-step explanation:

If you square the shorter lengths and add them together, they add up to one hundred

6^2 + 8^2 --> 38 + 64 = 100

Once you square 12 it equals 144

144 does not equal 100. There for it can't be a right triangle. To be a right triangle, it has to have a ratio pf 3: 4: 5.

Ex: 6: 8: 10, 12: 16: 20, etc.

Hope this helps!

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3 years ago

Tony’s club is selling oranges to raise money. For every box they sell, they get 1 1/8 dollars profit. They have sold 75 boxes a

Luden [163]

$1\frac{1}{8} = \frac{9}{8} = 1.125, 
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84.375 is the profit ALREADY made, so now subtract that from 180 dollars to get
95.625 $ needed, now divide by amount of profit per box...

Answer should be 85 boxes

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3 years ago

HELP LAST ATTEMPT !!!

zvonat [6]

Answer:

Step-by-step explanation:

By ythagoras Theorem,

x^2 + 9^2 = 15^2

x^2 + 81 = 225

x^2 = 225 - 81

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x = √144

x = 12

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3 years ago

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