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emmainna [20.7K]
2 years ago
11

Make b the subject of the formulaA=½(a+b)h​

Mathematics
2 answers:
kozerog [31]2 years ago
6 0

Step-by-step explanation:

please mark me as brainlest

kenny6666 [7]2 years ago
3 0
B=A/(1/2h) -a
work shown below

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Natalie was given a 30 question test. For each correct question she answered, she earned 2 points. For every incorrect answer sh
RideAnS [48]
T<span>he number of questions Natalie answered incorrectly.</span>
8 0
3 years ago
A triangle has two sides that measure
mr_godi [17]

Answer:

D,12cm

Step-by-step explanation:

100 percent/TRUST

3 0
3 years ago
The width of a rectangle is (x+1) and the length is (x-6). What is the length and width of the rectangle if the area is 30 squar
jolli1 [7]

Answer:

The length of the rectangle (l) = 3 feet

The width of the rectangle (W) =  10 feet

Step-by-step explanation:

<u><em>Step(i):-</em></u>

<em>Given that the width of the rectangle  = (x+1) feet</em>

<em>Given that the length of the rectangle = ( x-6) feet</em>

<em>The area of the rectangle = 30 square feet</em>

<u><em>Step(ii):-</em></u>

We know that the area of the rectangle

                = length ×width

    30   = ( x+1)(x-6)

    30   = x² - 6x + x -6

⇒ x² - 5 x - 6 = 30

⇒ x² - 5 x - 6 - 30 =0

⇒ x² - 5 x - 36 =0

 x² - 9 x +4x - 36 =0

   x (x-9) +4 ( x-9) =0

   ( x+4 ) ( x-9) =0

     ( x+4 ) =0 and  ( x-9) =0

     x =-4 and x =9

<u><em>Step(iii):-</em></u>

we have to choose x =9

     The length of the rectangle (l) =  x-6 = 9-6 =3

      The width of the rectangle (W) =  x+1 =  9 +1 = 10

<u><em>Final answer:-</em></u>

The length of the rectangle (l) = 3 feet

The width of the rectangle (W) =  10 feet

5 0
3 years ago
Evaluate [-1 -(-3) ] × (-4)​
7nadin3 [17]

Answer:

the answer is -8.

Step-by-step explanation:

hope this helps!

8 0
3 years ago
Read 2 more answers
I need help please!!!!!
charle [14.2K]
Obtuse angle. If wrong I’m sorry lol
5 0
3 years ago
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