All categories

2 years ago

Solve the proportions

Mathematics

2 answers:

Marysya12 [62]2 years ago

7 0

Hey there! I'm happy to help!

NUMBER 1

This is a trick to solve any proportion.

Multiply the diagonal numbers.

5(16)=80

Divide by the number that isn't the one you want to find.

90/8=10

And you are left with the number you haven't touched. We haven't touched x, so x=10.

NUMBER 2

Cross multiply.

45(-50)=-2250

Divide.

-2250/3=-750

So x=-750.

QUESTION 3

4(27)=108

108/12=9

So x+3=9, subtract 3 from both sides x=6.

Have a wonderful day! :D

sasho [114]2 years ago

5 0

Answer:

1.x = 80/8= 10

Step-by-step explanation:

You might be interested in

) Solve and then use estimation to make sure your answer is reasonable. Piper can read 26 pages in an hour. Last summer she read

Ierofanga [76]

2,925 Pages.

26 x 112.5 == 2,925.

3 0

2 years ago

What is (6x^-2)^2 (0.5x)^4 and the steps to do it?

tresset_1 [31]

Square inside the first parentheses,, then square outside both.
Answer: 2.25

8 0

3 years ago

How can you tell if an equation has one, zero, or infinite solutions? For example:

QveST [7]

Simplifying
-4v + 2v = -12

Combine like terms: -4v + 2v = -2v
-2v = -12

Solving
-2v = -12

Solving for variable 'v'.

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

Divide each side by '-2'.
v = 6

Simplifying
v = 6

8 0

3 years ago

Rectangle ABCD with coordinates A(1,1), B(4,1), C(4,2) and D(1,2) dilates with respect to the origin to give rectangle A’B’C’D’.

Delvig [45]

Answer: Option C.

Step-by-step explanation:

You need to find the distance AB with the formula for calculate the distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Then, substituting the coordinates of the points A(1,1) and B(4,1), you get:

$AB=\sqrt{(4-1)^2+(1-1)^2}=3$

You know that A'B'=6, then the scale factor of dilation can be calculated with:

$k=\frac{A'B'}{AB}$

Substituting values, you get:

$k=\frac{6}{3}\\\\k=2$

This matches with the option C.

8 0

2 years ago

Read 2 more answers

Plssss help <br> 10th grade mathematics

Sergio [31]

Answer:

A. 6x + 12 = 7x - 8.

Step-by-step explanation:

The opposite angles of a parallelogram are equal so its the first choice.

6x + 12 = 7x - 8.

6 0

2 years ago