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
goblinko [34]
2 years ago
8

Determine the average of the following test scores: 97,99,87,89

Mathematics
1 answer:
IRISSAK [1]2 years ago
6 0
All you have to do is add up all the numbers and divide by the amount of numbers there are so in this case 4
You might be interested in
( - 8)( - 4)(12)<br><br> I need help with this :)
Alisiya [41]

Answer:

= 384

Step-by-step explanation:

(-8)(-4)(12)

= (32)(12)

=384

8 0
2 years ago
Read 2 more answers
Now there is a square city of unknown size with a gate at the center of each side. There is a tree 20 b from the north gate. Tha
Brums [2.3K]

Answer:

The length of each side of the city is 250b

Step-by-step explanation:

Given

a = 20 --- tree distance from north gate

b =14 --- movement from south gate

c = 1775 --- movement in west direction from (b)

See attachment for illustration

Required

Find x

To do this, we have:

\triangle ADE \sim \triangle ACB --- similar triangles

So, we have the following equivalent ratios

AE:DE = AB:CB

Where:

AE = 20\\ DE = x/2 \\ AB = 20 + x + 14 \\ CB = 1775

Substitute these in the above equation

20:x/2 = 20 + x + 14: 1775

20:x/2 = x + 34: 1775

Express as fraction

\frac{20}{x/2} = \frac{x + 34}{1775}

\frac{40}{x} = \frac{x + 34}{1775}

Cross multiply

x *(x + 34) = 1775 * 40

Open bracket

x^2 + 34x = 71000

Rewrite as:

x^2 + 34x - 71000 = 0

Expand

x^2 + 284x -250x - 71000 = 0

Factorize

x(x + 284) -250(x + 284)= 0

Factor out x + 284

(x - 250)(x + 284)= 0

Split

x - 250 = 0 \ or\ x + 284= 0

Solve for x

x = 250 \ or\ x =- 284

x can't be negative;

So:

x = 250

6 0
3 years ago
What is the slope intercept from of the equation of the line that that passes through the points (-3, 2) and (1, 5)
viva [34]

The slope-intercept form of a line:

y=mx+b\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\to slope\\\\b\to y-intercept

We have:

(-3,\ 2)\to x_1=-3,\ y_1=2\\(1,\ 5)\to x_2=1,\ y_2=5

Substitute:

m=\dfrac{5-2}{1-(-3)}=\dfrac{3}{4}

y=\dfrac{3}{4}x+b

Put the values of coordinates of the point (1, 5) to the equation of a line:

5=\dfrac{3}{4}(1)+b\\\\5=\dfrac{3}{4}+b\qquad|-\dfrac{3}{4}\\\\b=4\dfrac{1}{4}

Answer: y=\dfrac{3}{4}x+4\dfrac{1}{4}


5 0
2 years ago
Solve the ff equations and inequalities 3x-2(x-3)=4(x-2),x is an element of whole number​
yKpoI14uk [10]

Answer:

solution:

x=\frac{14}{3}

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
If the length of two sides of a triangle are 7 and 10 the length of the third side may be?
JulijaS [17]
The answer you need is C)
7 0
3 years ago
Other questions:
  • An airlines records show that its flights between two cities arrive on the average 5.4 minutes late with a standard deviation of
    5·1 answer
  • there are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council? What
    5·1 answer
  • Divide square root 9x^2 by square root 18y^2
    9·1 answer
  • The ratio is 2 to 8. please help im begging
    6·1 answer
  • The measure of angle JKL can be represented using the expression 3x + 5. Point K has three lines extending from it. One line ext
    7·2 answers
  • Can someone help me out
    11·1 answer
  • Need this asap, thanks in advance :)
    8·1 answer
  • 2 dived 1/3 pls helpppppppppppppp
    6·2 answers
  • Find the area of the shaded region. Show all of your work.
    7·2 answers
  • Help help help help help help help
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!