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IceJOKER [234]
4 years ago
15

A rectangle is shown. All angles are right angles. The length of one side is 2 x and the length of another side is 3 x + 3. The

perimeter of the rectangle is 146 units. What is the length of the longer side? 14 units 28 units 33 units 45 units Rhombus LMNO is shown with its diagonals. Rhombus L M N O is shown. Diagonals are drawn from point M to point O and from point L to point N and intersect at point P. All sides are congruent. The length of LN is 28 centimeters. What is the length of LP? 7 cm 9 cm 14 cm 21 cm
Mathematics
2 answers:
Shalnov [3]4 years ago
8 0

Answer:

Answer: (A) The longer side in the rectangle is 45 units.

(B) The line LP measures 14 cm.

Step-by-step explanation:

Travka [436]4 years ago
7 0

Answer: (A) The longer side in the rectangle is 45 units.

(B) The line LP measures 14 cm.

Step-by-step explanation: In the rectangle, two sides are given as 2x and 3x + 3, respectively. The perimeter is also given as 146 units. The formula to determine the perimeter is

Perimeter = 2(L + W)

We can now substitute for the values

146 = 2(2x + 3x + 3)

146 = 2(5x + 3)

146 = 10x + 6

Subtract 6 from both sides of the equation

140 = 10x

Divide both sides of the equation by 10

14 = x

With the value of x now known as 14, the sides of the rectangle are,

L = 2x

L = 2 x 14

L = 28

And the other side is

W = 3x + 3

W = 3(14) + 3

W = 42 + 3

W = 45

Therefore the longer side is 45 units.

In question B;

The rhombus has all sides congruent as one of its properties. This simply implies that the diagonal from point M to point O, is the same length as the diagonal from point L to point N. Hence, at point P, where both diagonals intersect, both diagonals are divided into two equal lengths each. If line LN is 28 cm, then line LP which is half of LN shall be 28 divided by 2, and that gives us 14 cm.

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Tanzania [10]
Correct answers are:
(1) <span>28, 141 known cases
(2) 79913.71 known cases after six weeks (round off according to the options given)
(3) After approx. 9 weeks (9.0142 in decimal)

Explanations:
(1) Put x = 0 in given equation
</span><span>y= 28, 141 (1.19)^x
</span><span>y= 28, 141 (1.19)^(0)
</span>y= 28, 141


(2) Put x = 6 in the given equation:
<span>y= 28, 141 (1.19)^x
</span><span>y= 28, 141 (1.19)^(6)
</span>y= 79913.71

(3) Since
y= 28, 141 (1.19)^x
And y = <span>135,000

</span>135,000 = 28, 141 (1.19)^x
135,000/28, 141 = (1.19)^x

taking "ln" on both sides:
ln(4.797) = ln(1.19)^x

ln(4.797) = xln(1.19)
x = 9.0142 (in weeks)

5 0
3 years ago
Janet was in an accident. The damage to her car is
Svet_ta [14]

hi tAnswer:hey

Step-by-step explanation:

7 0
3 years ago
I am VERY confused on this question. Can someone help me?
Iteru [2.4K]
Answer: z=67-at
————
a-45
6 0
3 years ago
Which sentence represents the inequality -2b + 7 &gt; 27.5?
USPshnik [31]

Answer:

C <em>,</em><em> </em><em>negative</em><em> </em><em>two</em><em> </em><em>times</em><em> </em><em>a </em><em>number</em><em>,</em><em> </em><em>plus</em><em> </em><em>seven </em><em>,</em><em> </em><em>is </em><em>fewer</em><em> </em><em>than </em><em>twenty</em><em>-seven </em><em>and </em><em>five </em><em>tenths </em>

6 0
3 years ago
In a population distribution, a score of x=57 corresponds to z=-0.25 and a score of x=87 corresponds to z=1.25. Find the mean an
Serggg [28]

Here is dependence between scores and x-values:

Z_i=\dfrac{X_i-\mu}{\sigma},

where \mu is the mean, \sigma is standard deviation and i changes from 1 to 2.

1. When i=1, Z_1=-0.25,\ X_1=57, then

-0.25=\dfrac{57-\mu}{\sigma}.

2. When i=2, Z_2=1.25,\ X_2=87, then

1.25=\dfrac{87-\mu}{\sigma}.

Now solve the system of equations:

\left\{\begin{array}{l}-0.25=\dfrac{57-\mu}{\sigma}\\ \\1.25=\dfrac{87-\mu}{\sigma}.\end{array}\right.

\left\{\begin{array}{l}-0.25\sigma=57-\mu\\ \\1.25\sigma=87-\mu.\end{array}\right.

Subtract first equation from the second:

1.25\sigma-(-0.25\sigma)=87-57,\\ \\1.5\sigma=30,\\ \\\sigma=20.

Then

1.25=\dfrac{87-\mu}{20},\\ \\87-\mu=25,\\ \\\mu=87-25=62.

Answer: the mean is 62, the standard deviation is 20.

3 0
3 years ago
Read 2 more answers
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