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2 years ago

Someone please help me I’ll give out brainliest please dont answer if you don’t know order of operation

Mathematics

2 answers:

Drupady [299]2 years ago

5 0

Answer:

120

Step-by-step explanation:

First subtract 3/5 and 2/5, which gives you 1/5 or 0.2.

Next, divide 6 by 0.2 or 1.5, giving you 30.

Multiply 30 by 4, which gives you 120.

tiny-mole [99]2 years ago

4 0

<h2>8.4 is the correct answer!</h2><h3></h3><h3>6 ÷ 3/5 = 10</h3><h3>2/5 x 4 = 1.6</h3><h3>10 - 1.6 = 8.4</h3><h3></h3><h3>P (Parenthesis)</h3><h3>E (Exponents)</h3><h3>MD (Multiplication and Division)</h3><h3>AS (Addition and Subtraction)</h3><h3></h3><h3><em>Please let me know if I am wrong.</em></h3>

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1) What is the equation of a line that is perpendicular to 2x+y=−4 and passes through the point (2, −8)

defon

$Let\ k:y=m_1x+b_1\ and\ l:y=m_2x+b_2,\ then\\\\l\ \perp\ k\iff m_1m_2=-1.\\\\\text{We have}\ k:2x+y=-4\qquad subtract\ 2x\ from\ both\ sides\\\\k:y=-2x-4\to m_1=-2\\\\l:y=mx+b\\\\l\ \perp\ k\iff-2m=-1\qquad divide\ both\ sides\ by\ (-2)\\\\m=\dfrac{1}{2}\\\\l:y=\dfrac{1}{2}x+b\\\\\text{The line}\ l\ \text{passes throuth the point (2, -8).}\\\text{Susbtitute the coordinates of the point to the equation of the line }\ l:\\\\-8=\dfrac{1}{2}(2)+b\\\\-8=1+b\qquad subtract\ 1\ from\ both\ sides\\\\-9=b\to b=-9$

$\boxed{y=\dfrac{1}{2}x-9}$

If ΔABC is a right triangle, then we can use Pythagorean theorem.

The formula of a length of a line segment AB:

$|AB|=\sqrt{(x_B-x_A)^2+(Y_B-y_A)^2}$

A(1, -1), B(3, 2)

$|AB|=\sqrt{(3-1)^2+(2-(-1))^2}=\sqrt{2^2+3^2}=\sqrt{4+9}=\sqrt{13}$

(1) C(0, 2)

$|AC|=\sqrt{(0-1)^2+(2-(-1))^2}=\sqrt{(-1)^2+3^2}=\sqrt{1+9}=\sqrt{10}\\\\|BC|=\sqrt{(0-3)^2+(2-2)^2}=\sqrt{(-3)^2+0^2}=\sqrt9=3$

$\sqrt{13} >\sqrt{10} > 3\\\\3^2+(\sqrt{10})^2\stackrel{?}{=} (\sqrt{13})^2\\\\L=9+10=19\\R=13\\L\neq R\\Not\ a\ Right\ Triangle$

(2) C(3, -1)

$|AC|=\sqrt{(3-1)^2+(-1-(-1))^2}=\sqrt{2^2+0^2}=\sqrt4=2\\\\|BC|=\sqrt{(3-3)^2+(-1-2)^2}=\sqrt{0^2+(-3)^2}=\sqrt9=3$

$\sqrt{13} > 3 > 2\\\\3^2+2^2\stackrel{?}{=}(\sqrt{13})^2\\\\L=9+4=13\\R=13\\L=R\\Right\ Triangle$

(3) C(0, 4)

$|AC|=\sqrt{(0-1)^2+(4-(-1))^2}=\sqrt{(-1)^2+5^2}=\sqrt{1+25}=\sqrt{26}\\\\|BC|=\sqrt{(0-3)^2+(4-2)^2}=\sqrt{(-3)^2+2^2}=\sqrt{9+4}=\sqrt{13}$

$\sqrt{26} > \sqrt{13}=\sqrt{13}\\\\(\sqrt{13})^2+(\sqrt{13})^2\stackrel{?}{=}(\sqrt{26})^2\\\\L=13+13=26\\R=26\\Right\ Triangle$

8 0

2 years ago

The Buchanan Town Carnival charges $5 to enter and $2 for each ride. Write an expression to represent how much it would cost to

Lyrx [107]

Answer:

6 rides

Step-by-step explanation:

Let "y" represent the total cost...

Equation: y = 2r + 5

To figure out how many rides you could ride if you have $17.00, set y equal to 17:

17 = 2r + 5

12 = 2r

r = 6

3 0

3 years ago

vitamins and minerals, 5 boxes of protein powders, and 1 box of probiotics. At the end of the month, how many boxes have been de

Karolina [17]

Answer:

6 boxes

Step-by-step explanation:

6 0

1 year ago

Help me pls, I tried to do it and got the incorrect Anwser

dedylja [7]

It would be option 4) 2 because the line is perpendicular hope this helps!!

6 0

2 years ago

Read 2 more answers

Figure I and Figure II are similar figures,

ELEN [110]

The ratio of corresponding sides is same for all the sides for similar polygon. the correct proportion is,

$\frac{ST}{EF}=\frac{WR}{CD}$

Thus the option H is the correct option.

To find the correct proportion we need to know about the properties of slimier polygon.

<h3>What are the properties of similar polygon?</h3>

Two polygons are said to be similar or congruent pentagon-

The corresponding angle of two pentagons are congruent.

The ratio of corresponding sides is same for all the sides.

The figure given in the problem of similar two polygons with six sides.

Rearrange the second figure as shown in figure.

As for the similar polygons, the ratio of corresponding sides is same for all the sides.

Thus the sides shown in the two rearranged figure must be same. Therefore,

$\frac{ST}{EF}=\frac{WR}{CD}$

Hence the correct proportion is,

$\frac{ST}{EF}=\frac{WR}{CD}$

Thus the option H is the correct option.

Learn more about the similar polygon here;

brainly.com/question/771807

8 0

1 year ago