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
Kisachek [45]
3 years ago
5

Do both of them for 50 points

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0

Answer:

1) 5.44, 2) 3.9

Step-by-step explanation:

1) a/b + 2b - a^2 when a = 1.4 and b = 0.2

plug in the values:

1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44

2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)

again, plug in the values:

2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9

You might be interested in
the equation of a circle in general form is x squared + y squared + 20x + 12 y + 15 equals 0what is the equation of the circle i
Marrrta [24]

Answer: (x+10)^2+(y+6)^2=121

Step-by-step explanation:

The equation of a circle in the general form is:

 ax^{2}+by^2+cx+dy+e=0

The equaton of  a circle in standard form is:

(x-h)^2+(y-k)^2=r^2

Where the center is at <em>(h, k)</em> and <em>r</em> is the radius

To write the equation of a circle from general form to standard form, you must complete the squaare, as you can see below:

1- Given the equation in general form:

x^{2}+y^2+20x+12y+15=0

2- Complete the square:

-Group the like terms and move the constant to the other side.

- Complete the square on the left side of the equation.

- Add the same value to the other side.

Then you obtain:

(x^{2}+20x)+(y^2+12y)=-15\\(x^2+20x+(\frac{20}{2})^2)+(y^2+12y+(\frac{12}{2})^2)=-15+(\frac{20}{2})^2+(\frac{12}{2})^2\\\\(x+10)^2+(y+6)^2=-15+100+36\\(x+10)^2+(y+6)^2=121

4 0
3 years ago
What is the value of a+ by when a= 7, b= and c= 1/2 ?
Marat540 [252]

Answer:

a = 7

b =?

c = 1/2

a + by = 0

7 + b × 1/2 = 0

7 + 1/2 b = 0

1/2 b = - 7

b = -7 × 2

b = - 14

a + by

= 7 + - 14 × 1/2

= 7 -14/2

= 7 - 7

= <u>0</u>

Step-by-step explanation:

Id.k if you forgot to write the value of b or not, since the value of b is not given, this will be ur answer.

3 0
3 years ago
What is the equation of the line that is parallel to the line y=2x+3 and passes through the point (-2,1)
Lerok [7]

Answer:

y= 2x+5

Step-by-step explanation:

The equation of a line is usually written in the form of y=mx+c, where m is the gradient and c is the y-intercept.

Parallel lines have the same gradient. Hence m=2.

Subst. m=2 into the equation:

y=2x +c

Now substitute a coordinate.

When x= -2, y=1,

1= 2(-2) +c

1= -4 +c

c= 1 +4

c=5

Thus, the equation of the line is y= 2x +5.

3 0
3 years ago
Susie drank 2 Gatorade bottles on Monday. On Tuesday, she drank three times as many Gatorade bottles. How many Gatorade bottles
Setler [38]

Answer:

g  ➗ by 3 = 2

Step-by-step explanation:

6 0
3 years ago
it is expected that gas prices will rise to be 142% of the current amount. If the current gas price is $4 per gallon, explain ho
STatiana [176]
The answer is 54 iybiybyibyib
8 0
4 years ago
Other questions:
  • PPPLLLLEEEAASSSEEEE HHHEEEELLLLPPPPP!!!!!!!
    9·1 answer
  • Trent has some yellow, red, green, and blue cubes. Exactly 1/5 of the cubes are yellow and 1/6 of the cubes are green. Which of
    15·2 answers
  • 50 points, please answer quickly thank you.
    9·1 answer
  • The distance around the wheel of a truck is 9.42 feet .what's the diameter of the wheel
    6·1 answer
  • Rearrange the formula to make x the subject: <br><img src="https://tex.z-dn.net/?f=y%20%3D%20%20%5Cfrac%7Bx%20%2B%202%7D%7Bx%20-
    7·1 answer
  • Which of these is the quadratic parent function?
    6·1 answer
  • HELP ME ASAP on these math question it’s due after class
    5·1 answer
  • 3x + 2y = 12<br> y = x - 9
    10·1 answer
  • I swear nobody is not gonna help me on this question how many do you want to bet
    14·1 answer
  • How would I figure this out?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!