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lorasvet [3.4K]
3 years ago
15

Pls helpp will give brainliest

Mathematics
1 answer:
Verdich [7]3 years ago
5 0

Answer:

a = 5 ; b = 2  -   A: 32     B: 4  

Step-by-step explanation:

5 + 2 = 7

5 - 2 = 3

2 * 2 * 2 * 2 * 2 = 32

2 * 2 = 4

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Answer:

v = - 5

Step-by-step explanation:

Given

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3 years ago
The height of a triangle is 4 feet less than the length of its base, b. The area of the triangle is 30 square feet.
Papessa [141]

Answer:

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Step-by-step explanation:

From the question,

base(b)=x feet

height(h)=(x-4) feet

Area(A)=30 square feet

Now,

We know,

Area of triangle(A)=1/2*b*h

or, 30=1/2*x*(x - 4)

or, 30=1/2*x^2 -4x

or, 30*2=x^2 -4x

or, 60=x^2 -4x

or, 0 = x^2 -4x -60

or, 0 = x^2 +6x - 10x -60

or, 0 = x(x + 6) -10(x + 6)

or, 0 = (x+6) (x-10)

Either,

x+6=0. or, x-10=0

or,x= -6. or, x= 10

Since, the base of the triangle can not be negative number then, x≠ -6feet but x=10feet

Lastly,

Height(h)=X - 4

=10 - 4

=6 feet

8 0
2 years ago
an object is launched at 4 ft./s from 88 foot tall platform the objects height H in feet after T seconds is given by the equatio
posledela

Answer:

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Step-by-step explanation:

When the ball hits the ground, the height is equal to zero. So find t when H=0:

H=16t²+8t+80

0=16t²+8t+80

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So (2t-3)=0, or (t+2)=0

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8 0
3 years ago
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