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ANTONII [103]
3 years ago
6

What is the are of this triangle? How do you find the area if you don’t know the height to use A=1/2(b) x h

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0

Answer:with that formula you need to change it to be equal to h so you can find it

Step-by-step explanation:

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The image of a parabolic lens is traced onto a graph. The function f(x) = (x + 8)(x – 4) represents the image. At which points d
alexandr402 [8]

Answer:

x = -8 and x = 4

Step-by-step explanation:

given

f(x) = (x+8) (x - 4)

recall that at any point on the x-axis, y = 0 [i.e f(x) = 0]

hence to find where the graph crosses the x-axis, we simply substitue f(x) = 0 into the equation and solve for x

f(x) = (x+8) (x - 4)

0 = (x+8) (x - 4)

Hence

either,

(x+8) = 0 ----> x = -8  (first crossing point)

or

(x-4) = 0 ------> x = 4 (second crossing point)

Hence the graph crosses the x-axis at x = -8 and x = 4

7 0
3 years ago
Sin A 7 divided by 25
Brums [2.3K]

Answer:

Cos A = 24/25, Tan A = 7/25

Step-by-step explanation:

Given that Sin A = 7/25

Sin = Opp/hyp

Therefore using Pythagoras theorem, adjacent will be;

= √(25²-7²)

= √576

= 24

Thus;

Cos A = adjacent/hypotenuse

          =  24/25

Cos A = 24/25

Tan A = opp/hypotenuse

         = 7/25

Tan A = 7/25

4 0
3 years ago
Read 2 more answers
Ax +by = 16
Talja [164]

Answer:

  • The system has infinitely many solutions when a = 3/4 and b = 1/2

<h3>Given </h3>

System of linear equations

  • ax +by = 16
  • 3x+2y=64

<h3>To find </h3>

  • Values of a and b that leads to infinitely many solutions

<h3>Solution</h3>

The linear system of equations has infinitely many solutions when lines overlap, so both have same slope and y-intercept.

We can solve it in two different ways

1. Note that when the first equation is multiplied by 4, it has same value of constant as the second equation, which is 64.

  • 4ax + 4by = 64
  • 3x + 2y = 64

When compared it gives us:

  • 4a = 3 ⇒ a = 3/4
  • 4b = 2 ⇒ b = 2/4 = 1/2

2. Convert both equations from standard to slope-intercept form and compare:

  • ax + by = 16
  • by = -ax + 16
  • y = - (a/b)x + 16/b

  • 3x + 2y = 64
  • 2y = - 3x + 64
  • y = - (3/2)x + 32

Work out values of a and b:

  • 16/b = 32 ⇒ b = 16/32 ⇒ b = 1/2
  • - (a/b) = - 3/2 ⇒ a/b = 3/2 ⇒ a = 3b/2 ⇒ a = 3(1/2)/2 ⇒ a = 3/4
3 0
1 year ago
I need help<br> what is 2+4+1<br> im desperate
uranmaximum [27]
*Quack* 7 hope this helps fellow duck!
8 0
2 years ago
Read 2 more answers
I already did the work but I wanted to double change to make sure my answer are correct. The main ones I’m not sure about are 4,
Illusion [34]

Answer:

4. Composites have many non distinct prime factors, which are used more than once, such as 2,2,5,5 (the prime factors of every multiple of 100). What that means is that there can be two, three, four, or, in fact, infinitely many composite numbers that can have the same distinct prime factors.

Step-by-step explanation:

So, yes.

8 0
3 years ago
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