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JulsSmile [24]
3 years ago
15

The length of a rectangle is 3x-5 and the width of the rectangle is 2x+7. Find the perimeter.

Mathematics
1 answer:
Vinvika [58]3 years ago
7 0

Answer:

The perimeter is 110 cm.

Step-by-step explanation:

The length of a rectangle is 3x-5 and the width of the rectangle is 2x+7. Find the perimeter.

if we condense that

Perimeter = 2(Length) + 2(Width)

Now we can see how the answer forms. If we plug in our equations from above:

100 = 2(3x + 5) + 2(2x)

Distributing

100 = 6x + 10 + 4x

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Can someone help me with this asap please, thanks!
kvv77 [185]

Answer:

Given: r\perp s and t\perp s.

Prove: r\parallel t

Since r\perp s, By the definition of perpendicular lines angles 1, 2, 3 and 4 are 90 degree. similarly t\perp s,  it means angles 5, 6, 7 and 8 are 90 degree.

We can say that,

\angle 1\cong \angle 5, \angle 2\cong \angle 6, \angle 3\cong \angle 7 and \angle 4\cong \angle 8

From figure it is noticed that the angle 1 and 5 are corresponding angles.

If two parallel lines are intersected by a transversal, then the corresponding angles are equal.

Since corresponding angles are congruent, therefore the line must be parallel to each other.

Hence proved that r\parallel t.

5 0
3 years ago
An article in Knee Surgery, Sports Traumatology, Arthroscopy, "Arthroscopic meniscal repair with an absorbable screw: results an
igomit [66]

Answer:

Mean = 1.57

Variance=0.31

Step-by-step explanation:

To calculate the mean and the variance of the number of successful surgeries (X), we first have to enumerate the possible outcomes:

1) Both surgeries are successful (X=2).

P(e_1)=0.90*0.67=0.603

2) Left knee unsuccessful and right knee successful (X=1).

P(e_2)=(1-0.9)*0.67=0.1*0.67=0.067

3) Right knee unsuccessful and left knee successful (X=1).

P(e_3)=0.90*(1-0.67)=0.9*0.33=0.297

4) Both surgeries are unsuccessful (X=0).

P(e_4)=(1-0.90)*(1-0.67)=0.1*0.33=0.033

Then, the mean can be calculated as the expected value:

M=\sum p_iX_i=0.603*2+0.067*1+0.297*1+0.033*0\\\\M=1.206+0.067+0.297+0\\\\M=1.57

The variance can be calculated as:

V=\sum p_i(X_i-\bar{X})^2\\\\V=0.603(2-1.57)^2+(0.067+0.297)*(1-1.57)^2+0.033*(0-1.57)^2\\\\V=0.603*0.1849+0.364*0.3249+0.033*2.4649\\\\V=0.1115+0.1183+0.0813\\\\V=0.3111

3 0
3 years ago
8 friends share 3 cookies, what fraction of the cookie does each friend get?
kirza4 [7]
8 friends share 3 cookies.

There are 3 cookies and 8 people.

We need to know how much cookie 1 friend gets.

1 friend gets 3/8 of a cookie.

There are 8 friends, so 8 x 3/8 = 3. The 8 friends will finish 3 cookies if they all have 3/8 of a cookie.

Each friend gets 3/8 of a cookie.
4 0
3 years ago
Find a number which when divided by 3 gives the quotient 20 and remainder
Westkost [7]

Solution:

<em>the</em><em> </em><em>answer</em><em> </em><em>please</em><em> </em><em>mark</em><em> </em><em>as</em><em> </em><em>brainly ness</em><em> </em>

<em>your</em><em> </em><em>welcome</em>

8 0
2 years ago
Finding Side Lengths in a Right Triangle
velikii [3]

Answer:

maybe it's 10.because c is 10,b is 10,and so as s.

hence s is 10 also.

7 0
3 years ago
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