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
bearhunter [10]
3 years ago
9

Can someone help me with question 19,21 and 23. I will mark brainleast

Mathematics
1 answer:
Over [174]3 years ago
4 0

Answer:

19 is 4/dc^2

21 is y+4/4

23 is x+2/x-2

Step-by-step explanation:

You might be interested in
Slope = 4, passing through (-6, 8)
Mademuasel [1]

The point slope form is y - 8 = 4(x + 6) and the slope intercept form would be y = 4x + 32.

In order to find this, we'll start with the base form of point-slope form.

y - y1 = m(x - x1) ----> Plug in the numbers

y - 8 = 4(x - -6) ----> Simplify

y - 8 = 4(x + 6)

Now to find slope intercept form, solve for y.

y - 8 = 4(x + 6) ----> distribute the 4

y - 8 = 4x + 24 -----> add 8 to both sides

y = 4x + 32

7 0
2 years ago
Write 2, 330, 000 in scientific notation?
Genrish500 [490]

Answer:

2.33 × 10^6

Step-by-step explanation:

I just used a calculator, to be honest. It was super simple.

2.33 * 10^6

2.33 * (10*10*10*10*10*10)

which then equals 2,330,000

6 0
3 years ago
Which situation can be modeled by the equation 705 – m= 430?<br> help !!!!
777dan777 [17]
Real world example could be:
Consider x is time in minutes
Consider y is the amount of fish food required in grams

The equation could then represent how much food (in grams) that a fish needs to be fed x minutes after it was previously fed.
6 0
3 years ago
Read 2 more answers
Use the formula h(t)=−16t2+v0t+h0 , where v0 is the initial velocity and h0 is the initial height. How long will it take for the
Rama09 [41]

<em><u>Question:</u></em>

Britney throws an object straight up into the air with an initial velocity of 27 ft/s from a platform that is 10 ft above the ground. Use the formula h(t)=−16t2+v0t+h0 , where v0 is the initial velocity and h0 is the initial height. How long will it take for the object to hit the ground?

1s   2s   3s   4s

<em><u>Answer:</u></em>

It takes 2 seconds for object to hit the ground

<em><u>Solution:</u></em>

<em><u>The given equation is:</u></em>

h(t) = -16t^2 + v_0t+h_0

Initial velocity = 27 feet/sec

h_0 = 10\ feet

Therefore,

h(t) = -16t^2 +27t+10

At the point the object hits the ground, h(t) = 0

-16t^2 +27t+10 = 0\\\\16t^2-27t-10=0

Solve by quadratic formula,

\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}\\\\x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\mathrm{For\:}\quad a=16,\:b=-27,\:c=-10:\quad \\\\t=\frac{-\left(-27\right)\pm \sqrt{\left(-27\right)^2-4\cdot \:16\left(-10\right)}}{2\cdot \:16}\\\\t = \frac{27 \pm \sqrt{1369}}{32}\\\\t = \frac{27 \pm 37}{32}\\\\We\ have\ two\ solutions\\\\t = \frac{27+37}{32}\\\\t = \frac{64}{32}\\\\t = 2\\\\And\\\\t = \frac{27-37}{32}\\\\t = -0.3125

Ignore, negative value

Thus, it takes 2 seconds for object to hit the ground

7 0
3 years ago
On Friday, the temperature was 82°F. The temperature changed by –2°F on Saturday, and then it changed by 5°F on Sunday. What was
postnew [5]

Answer:

the temp on Sunday was 85, it changed by going down 2 degrees, and up 5 degrees

Step-by-step explanation:

when it says -2 degrees F its basically saying subtract 2, and then go on and add 5

4 0
3 years ago
Read 2 more answers
Other questions:
  • Help please in algebra ​
    12·1 answer
  • Jonathan had to rent a car for one day while his car was getting fixed , the car rental costs $23 per day plus $2 for every mile
    15·2 answers
  • 3/4x + 17 = 23 what does x equal
    6·2 answers
  • What is the slope for <br> y=-1/3x+4
    13·1 answer
  • PLEASE HELP AS SOON AS POSSIBLE Sunny earns $22.75 per week delivering newspapers. He worked as a delivery boy for 3 weeks. He a
    15·1 answer
  • Whats the solution to this problem
    6·1 answer
  • Could you help with this? <br> qwertyuiopasdfghjklzxcvbnm123<br> decode that into a math problem
    13·1 answer
  • what is the function rule for the transformed with vertical stretch by a factor of 2 and translated down 6
    15·1 answer
  • Please solve this paper​
    9·1 answer
  • 1. Charlene wants to center a rectangular pool in her backyard so that the edges of the pool are an equal distance from the edge
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!