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
Svetlanka [38]
3 years ago
5

When x= 5 the value of the expression 20/-25 + x (x - 10) is

Mathematics
2 answers:
ASHA 777 [7]3 years ago
3 0
The answer is -25.8 because 5-10=-5, -5*5=-25, then you simplify fraction and add/subtract
garik1379 [7]3 years ago
3 0

Answer:

\frac{-129}{5}

Step-by-step explanation:

We have been given an expression \frac{20}{-25}+x(x-10). We are asked to evaluate our given expression, when x=5.

To evaluate our given expression, we will substitute x=5 in our given expression as:

\frac{20}{-25}+5(5-10)

-\frac{4}{5}+5(-5)

-\frac{4}{5}-25

Make a common denominator:

-\frac{4}{5}-\frac{5*25}{5}

-\frac{4}{5}-\frac{125}{5}

\frac{-4-125}{5}

\frac{-129}{5}

Therefore, the value of our given expression \frac{-129}{5}.

You might be interested in
Parallel lines s and t are cut by a transversal, r, as shown
Natalija [7]

Answer:

18

Step-by-step explanation:

i just took the test and got a 100% :)

8 0
3 years ago
Read 2 more answers
Find the value of x.
azamat

Answer:

98 °

Step-by-step explanation:

We know that the sum of the angles in a triangle is 180. We also know that angle DAB is 122°, meaning that angle CAB is 180-122, which is 58°. We also know that angle CBA is 24 degrees. Therefore, angle x is just 180-(58+24), which is 98

3 0
2 years ago
Mrs. Lovell’s class is baking cookies. They need 3 3/5 pounds of sugar and 5 1/3 pounds of flour. When they mix the sugar and fl
makkiz [27]
8 14/15 pounds altogether if you needed the answer in mixed numbers simplified.
5 0
3 years ago
Read 2 more answers
Find all the missing elements:
pentagon [3]

Answer:

B = 34.2°

C = 58.2° or 121.8°

c= 10.6

Step-by-step explanation:

Step 1

Finding c

We calculate c using Pythagoras Theorem

c²= a² + b²

c = √a² + b²

a= 8, b = 7

c = √8² + 7²

c = √64 + 49

c = √(113)

c = 10.630145813

Approximately c = 10.6

Step 2

Find B

We solve this using Sine rule

a/sin A = b/sin B

A = 40°

a = 8

b = 7

Hence,

8/sin 40° = 7/sin B

8 × sin B = sin 40° × 7

sin B = sin 40° × 7/8

B = arc sin (sin 40° × 7/8)

B ≈34.22465°

Approximately = 34.2°

Step 3

We find C

Find B

We solve this using Sine rule

b/sin B = c/sin C

B = 34.2°

b = 7

c = 10.6

C = ?

Hence,

7/sin 34.2° = 10.6/sin C

7 × sin C = sin 34.2 × 10.6

sin C = sin 34.2° × 10.6/7

C = arc sin (sin 34.2° × 10.6/7)

C = arcsin(0.85)

C= 58.211669383

Approximately C = 58.2°

Or = 180 - 58.2

C = 121.8°

5 0
2 years ago
Read 2 more answers
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
Other questions:
  • Manny and Evan were flying paper airplanes. Manny’s airplane flew 36.5 centimeters and Evan’s airplane flew 18 centimeters. How
    14·2 answers
  • Which of the following is the correct answer??
    5·2 answers
  • Whole note minus 1 half notes minus 2 quarter notes
    7·2 answers
  • As a diameter of a circle increases the radius will
    5·2 answers
  • It costs $50 plus $28 per month to join the gym.How much would it cost to join for 7 months?​
    12·1 answer
  • On a game show, a contestant randomly chooses a chip from a bag that contains numbers and strikes. The theoretical probability o
    13·1 answer
  • Why might you use the commutative property to multiply (-4) × 5?<br><br>​
    14·1 answer
  • In his first 12 at bats during the baseball season, Jose had 4 hits. he maintained this hit throughout the entire season
    13·1 answer
  • Ok here you go theyhatemeforlif3
    14·1 answer
  • PLEASE HELP
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!