1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PilotLPTM [1.2K]
3 years ago
6

Hector ' s age is 4 less than a number x. Hector is 12 years old. Find the number.

Mathematics
1 answer:
In-s [12.5K]3 years ago
3 0
12+4 =x so you would add 12=4 to get 16. or x=16 
You might be interested in
If h(x)=3^x-7 find h(4) show all work<br><img src="https://tex.z-dn.net/?f=h%28x%29%20%3D%20%7B3%7D%5E%7Bx%7D%20%20-%207" id="Te
Svetach [21]
Just substitute 4 for x in the given equation:

h(4) = 3^4 - 7 = 81 - 7 = 74 (answer)
3 0
3 years ago
Read 2 more answers
during a softball game kay hit a fly ball the function f(x) = -16t^2 + 64t + 4 describes the height of the softball in feet. mak
STatiana [176]
<h2>Hello!</h2>

The graph is attached.

To graph a parabola we need to know the following:

- If the parabola is open upwards or downwards

- They axis intercepts (if they exist)

- The vertex position (point)

We are given the function:

f(t)=-16t^{2}+64t+4

Where,

a=-16\\b=64\\c=4

For this case, the coefficient of the quadratic term (a) is negative, it means that the parabola opens downwards.

Finding the axis interception points:

Making the function equal to 0, we can find the x-axis (t) intercepts, but since the equation is a function of the time, we will only consider the positive values, so:

f(t)=-16t^{2}+64t+4\\0=-16t^{2}+64t+4\\-16t^{2}+64t+4=0

Using the quadratic equation:

\frac{-b+-\sqrt{b^{2}-4ac } }{2a}=\frac{-64+-\sqrt{64^{2}-4*-16*4} }{2*-16}\\\\\frac{-64+-\sqrt{64^{2}-4*-16*4} }{2*-16}=\frac{-64+-\sqrt{4096+256} }{-32}\\\\\frac{-64+-\sqrt{4096+256} }{-32}=\frac{-64+-(65.96) }{-32}\\\\t1=\frac{-64+(65.96) }{-32}=-0.06\\\\t2=\frac{-64-(65.96) }{-32}=4.0615

So, at t=4.0615 the height of the softball will be 0.

Since we will work only with positive values of "x", since we are working with a function of time:

Let's start from "t" equals to 0 to "t" equals to 4.0615.

So, evaluating we have:

f(0)=-16(0)^{2}+64(0)+4=4\\\\f(1)=-16(1)^{2}+64(1)+4=52\\\\f(2)=-16(2)^{2}+64(2)+4=68\\\\f(3)=-16(3)^{2}+64(3)+4=52\\\\f(4.061)=-16(4.0615)^{2}+64(4.0615)+4=0.0034=0

Finally, we can conclude that:

- The softball reach its maximum height at t equals to 2. (68 feet)

- The softball hits the ground at t equals to 4.0615 (0 feet)

- At t equals to 0, the height of the softball is equal to 4 feet.

See the attached image for the graphic.

Have a nice day!

3 0
3 years ago
A bedroom has a length of x + 6 feet and a width of x feet. Find the area of the bedroom, y, when x = 12.
Juliette [100K]
The answer is 216 because (12 + 6) x (12)
8 0
2 years ago
Read 2 more answers
Select all equations that have infinitely many solutions.
ella [17]

Answer:

C

Step-by-step explanation:

Test Numbers with each equation or Simplify

Simplified, C's equation equates to 0 which would make it infinite

8 0
3 years ago
Read 2 more answers
Plz help quick. This question is on a quiz in Edg 2020 whoever answered first will get brainliest and I will be giving 50 points
lys-0071 [83]

Answer:

A B and D

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is 99÷99+7÷4<br><br><img src="https://tex.z-dn.net/?f=2" id="TexFormula1" title="2" alt="2" align="absmiddle" class="latex-
    5·1 answer
  • Just making sure I'm doing this right
    10·1 answer
  • The ratio length to width of a rectangle is 8:3.Find the dimensions of the rectangle if the perimeter is 88 inches.
    6·1 answer
  • What is the area of a prism
    6·1 answer
  • Yeah, it's really late at night and I can't think...hah..help
    7·2 answers
  • There are three colored cookie jars. One jar is blue, another green and the last one pink. The blue jar contains 10 chocolate ch
    11·2 answers
  • Explain what the inequality means in relation to the positions of these numbers on the number line.
    11·1 answer
  • 1
    6·2 answers
  • A rectangular building with a square front is to be constructed of materials that costs 11 dollars per ft2 for the flat roof, 14
    7·1 answer
  • A basket contains sweet potatoes,
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!