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Studentka2010 [4]
3 years ago
11

Evaluate y^2+7y-8 when y=-3

Mathematics
1 answer:
inessss [21]3 years ago
6 0

Answer:

the answer if the first picture

Step-by-step explanation:

the second one is the explanation

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[FIRST TO ANSWER GETS BRAINLIEST] Here is a rectangle ABCD. The length of the rectangle is increased by 10%. The width of the re
erastovalidia [21]
New length = 30x110% = 33cm
new width = 20x105% = 21cm

original perimeter = 30x2 + 20x2
= 60 + 40 = 100
new perimeter = 33x2 + 21x2
= 66 + 42 = 108

increase in perimeter = 108-100 = 8
percentage increase = 8/100 x 100% = 8%
6 0
3 years ago
In parallelogram abcd, ab=14, bc=20, m(angle)b=54. Find to the nearest tenth the length of diagonal bd, and find measure angle d
muminat
It is is a parallelogram, hence we have to face sides equal in length and the opposite angles are also the same. From the given above we have:
ab=14 and its opposite side cd=14
bc=20 and its opposite side da=20

Solving for the diagonal measurement bd, we have consecutive angles are equal to 180°
∠A+∠B=180°
∠A=180°-54°
∠A=126° , ∠B=54° ,∠C=126° and ∠D=54°
bd²=ab²+da²-2(ab)(da)cos126°
bd²=14²+20²-2*14*20cos126°
bd=30.42 unit

Solving for the angle dbc, we have
cos dbc=bc²+bd²-cd²/a*bc*bd
cos dbc=20²+30.42²-14²/2*20*30.42
dbc=21.76° 
3 0
3 years ago
Both numbers too 54.698 rounded too the nearest hundreth
insens350 [35]

Answer:

54.700 or 54.7

Step-by-step explanation:

Hope this helped

8 0
3 years ago
Read 2 more answers
Standard Form<br> -19 - 24y+ 8y^7 help help wjeko
Iteru [2.4K]

8y7−24y−19 This is what it is in standard form

7 0
3 years ago
_________________ help the group manage relationships
Aleonysh [2.5K]

Answer:

B

Step-by-step explanation:

     <u>Leadership roles</u> help the group manage relationships

[] Leadership is the action of leading a group of people or an organization, so this best completest the answer

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

5 0
3 years ago
Read 2 more answers
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