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
KatRina [158]
3 years ago
9

Please solve at least one. thanks!​

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
7 0

Answer:

-9/8

Step-by-step explanation:

We simplify the fraction, then we isolate the variable

Elza [17]3 years ago
6 0

Answer:

Step-by-step explanation:

42) 9/4 = 2/x

You can solve it by cross multiplication:

In cross multiplication the numerator of first expression will be multiplied by th denominator of 2nd expression and the numerator of second expression will be multiplied by the   denominator of 1st expression.

So,

9/4 = 2/x

9*x = 2*4

9x=8

Divide both the sides by 9

9x/9 = 8/9

x= 8/9

44) -3/8 = r/3

Perform cross multiplication:

-3 *3 = 8* r

-9=8r

Divide both the sides by 8

-9/8 = 8r/8

-9/8 = r

46) -9/2n = -5/7

Perform cross multiplication:

-9 * 7 = 2n* -5

-63= -10n

negative signs will be cancelled out by each other.

63= 10n

Divide both the sides by 10

63/10 = 10n/10

63/10 = n ....

You might be interested in
Find the equation of a line that goes through the point (1,-1) and is parallel to the line y = -6x + 1
Katena32 [7]

y=-6x+5

the slope needs to stay -6 so the line stays parallel, with the slope going down 6, right 1, the y-int would have to be 5

5 0
2 years ago
Read 2 more answers
The figure is made up of 2 cones and a cylinder. The cones and cylinder have a 4 cm diameter.
Ilya [14]

Answer:

62.84

Step-by-step explanation:

Volume of both cones is approximately 12.57

formula= pi*r^2*h/3

Volume of the cylinder is approximately 37.7

formula= pi*r^2*h

you add the volumes

12.57+12.57+37.7

= 62.84

8 0
3 years ago
Draw a square with a perimeter of 16 feet
Colt1911 [192]
You need a ruler and a pencil.  Oh and paper.  Make sure that each side is equal to 4 inches.  Then make a scale of 1:12, meaning 1 inch=1 foot.
4 0
3 years ago
The expression 7+3x+4 represents the perimeter of the triangle. Simplify the expression.
anyanavicka [17]

Answer:

-3.6

Step-by-step explanation:

Simplifying

7 + 3x + 4 = 0

Reorder the terms:

7 + 4 + 3x = 0

Combine like terms: 7 + 4 = 11

11 + 3x = 0

Solving

11 + 3x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-11' to each side of the equation.

11 + -11 + 3x = 0 + -11

Combine like terms: 11 + -11 = 0

0 + 3x = 0 + -11

3x = 0 + -11

Combine like terms: 0 + -11 = -11

3x = -11

Divide each side by '3'.

x = -3.666666667

Simplifying

x = -3.666666667

4 0
2 years ago
jen uses 8.2 of blue paint and white paint to paint her bedroom walls. 4/5ths of this amount is blue paint, and the rest is whit
lara31 [8.8K]

Answer:

The amount of white paint Jen used to paint the walls in her room is:

  • <u>1.64 pints.</u>

Step-by-step explanation:

To solve the exercise you only have to pay attention to the statement, in the section that says that 4/5 parts of the total painting is blue, therefore, if 1 is the total painting, you must do a subtraction:

  • 1 - 4/5 = 1/5

Since the remaining white paint is 1/5 of the total, you have two ways to solve the exercise: multiply the total paint (8.2 pints) by 1/5 or divide the number by 5, as shown below:

  • <u>Amount of white paint = 8.2 pints * (1/5) = 1.64 pints. </u>
  • <u>Amount of white paint = 8.2 pints / 5 = 1.64 pints. </u>

As you can see, the two methods provide a <u>value of 1.64 pints, which corresponds to 1/5 of the total paint and is the amount of white paint used</u>.

5 0
3 years ago
Other questions:
  • Which of the following types of equations have you learned to solve using algebraic methods?
    7·1 answer
  • The axis of symmetry for the function f(x) = −x2 − 10x + 16 is x = −5. What are the coordinates of the vertex of the graph?
    12·2 answers
  • What is 3,4,6,9,10,11,12,13
    12·2 answers
  • Find the value of x that will make l and m 7x-7, 4x+14
    11·1 answer
  • How to write out 314,207
    13·2 answers
  • A new car is purchased for 17900 dollars. The value of the car depreciates at 12.25%
    5·1 answer
  • Each day enough paper is recycled in the United States to fill 15 miles of train box cars. How many miles of boxcars could be fi
    13·1 answer
  • Mr.Moore read 25 pages of a book on Monday. He read 32 pages on Tuesday, 39 pages on Wednesdy, and 46 pages on Thursday. If this
    15·2 answers
  • The number of sides of two regular polygons are as 5:4 and the difference between their angles is 9°. Find the number of sides o
    9·1 answer
  • 8,487 divided by 8 I need help !
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!