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3 years ago

HELP ME PLEASE QUICKLY FAST!

Mathematics

2 answers:

RoseWind [281]3 years ago

5 0

The answer is 13. You can find this out by using the PEMDAS method. (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.)

sukhopar [10]3 years ago

4 0

10/2+4(3-1) goes to 10/2+4(2) then to 10/2+8 then to 5+8 then you get 13 as ur answer!!!

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Guys help me solve this plzzz:(((;;(;;;((;

Maru [420]

Answer:

It should be 60 degrees

correct me if wrong but since it's supplementary, you subtract 155 - 35 then from 180 and you get 60

Im not 100% about this tho but like 75% sure

3 0

2 years ago

2. Given a quadrilateral with vertices (−1, 3), (1, 5), (5, 1), and (3,−1):

zlopas [31]

<h2>Explanation:</h2>

In every rectangle, the two diagonals have the same length. If a quadrilateral's diagonals have the same length, that doesn't mean it has to be a rectangle, but if a parallelogram's diagonals have the same length, then it's definitely a rectangle.

So first of all, let's prove this is a parallelogram. The basic definition of a parallelogram is that it is a quadrilateral where both pairs of opposite sides are parallel.

So let's name the vertices as:

$A(-1,3) \\ \\ B(1,5) \\ \\ C(5,1) \\ \\ D(3,-1)$

First pair of opposite sides:

<u>Slope:</u>

$\text{For AB}: \\ \\ m=\frac{5-3}{1-(-1)}=1 \\ \\ \\ \text{For CD}: \\ \\ m=\frac{1-(-1)}{5-3}=1 \\ \\ \\ \text{So AB and CD are parallel}$

Second pair of opposite sides:

<u>Slope:</u>

$\text{For BC}: \\ \\ m=\frac{1-5}{5-1}=-1 \\ \\ \\ \text{For AD}: \\ \\ m=\frac{-1-3}{3-(-1)}=-1 \\ \\ \\ \text{So BC and AD are parallel}$

So in fact this is a parallelogram. The other thing we need to prove is that the diagonals measure the same. Using distance formula:

$d=\sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2} \\ \\ \\ Diagonal \ BD: \\ \\ d=\sqrt{(5-(-1))^2+(1-3)^2}=2\sqrt{10} \\ \\ \\ Diagonal \ AC: \\ \\ d=\sqrt{(3-1)^2+(-5-1)^2}=2\sqrt{10} \\ \\ \\$

So the diagonals measure the same, therefore this is a rectangle.

5 0

3 years ago

Ball drop with kinetic and potential energy

bagirrra123 [75]

Answer:

When the ball is dropped on the ground, the potential energy convert into kinetic energy. It had potential energy when it was held in the air waiting to be dropped, and It had kinetic energy when it was dropped because kinetic energy is when it's moving. when you drop it, your moving it.

Step-by-step explanation:

your welcome *bows*

7 0

2 years ago

Help :) !!!!!!!!!!!!!!!!!!!!!!!!!!!

UNO [17]

Answer:

B, because no misleading

7 0

3 years ago

4. A book club earns $230 for its meetings. They want to divide the money to pay for 7 meetings. When the treasurer types 230 ÷

DIA [1.3K]

Answer:

to the tenths place, 32.86

Step-by-step explanation: It is because money is always rounded to the tenths place

4 0

3 years ago