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andrew11 [14]
4 years ago
10

1/7+2 1/8-3/2=? What is the first step

Mathematics
1 answer:
Sauron [17]4 years ago
4 0

According to (P)arenthesis (E)xponets (M)ultiply (D)ivide (A)dd (S)ubtract, it would be (1 / 7).


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2a( 3a + b)- 3a(2a+4b)<br>​
Rom4ik [11]

Answer:

<em>-10ab</em>

STEP BY STEP EXPLANATION

<em>2</em><em>a</em><em> </em><em>(</em><em>3</em><em>a</em><em> </em><em>+</em><em> </em><em>b)</em><em> </em><em>-3a(</em><em>2</em><em>a</em><em> </em><em>+</em><em>4</em><em>b</em><em>)</em>

<em>6</em><em>a</em><em>²</em><em> </em><em>+</em><em> </em><em>2</em><em>a</em><em>b</em><em> </em><em>-</em><em> </em><em>6</em><em>a</em><em>²</em><em>-</em><em> </em><em>1</em><em>2</em><em>a</em><em>b</em>

<em>2</em><em>a</em><em>b</em><em>-</em><em>1</em><em>2</em><em>a</em><em>b</em><em> </em><em>6</em><em>a</em><em>²</em><em>-</em><em>6</em><em>a</em><em>²</em>

<em>-10ab</em>

Hope this will help you if not then sorry :)

8 0
3 years ago
Read 2 more answers
Show that sin (30°) = 1/2
Natali [406]

Answer:

Geometric proof in explanation.

Step-by-step explanation:

Draw an equilateral triangle.

A equilateral triangle has it's sides all congruent and all it's angles measures 60 degrees.

We are going to draw a line segment to cut the equilateral triangles into two congruent right triangles. I will do this in the attachment with p being positive.

You can see we will get 30-60-90 triangles.

We don't need to find the adjacent measurement to the angle whose measurement is 30 degrees since sine is opposite over hypotenuse.

\sin(30^\circ)=\frac{\frac{p}{2}}{p}=\frac{p}{2} \cdot \frac{1}{p}=\frac{1}{2}

\sin(30^\circ)=\frac{1}{2}

7 0
3 years ago
Gavin is saving up to buy a new phone. He already has $100 and can save an additional $7 per week using money from his after sch
vodka [1.7K]

Answer:

170$

Step-by-step explanation:

100+7W

4 0
3 years ago
What are the zeros of f(x)= 2 cos (3x) +1 on the interval [0,pi]
Hitman42 [59]

Answer:

40° or 2π/9 rad

Step-by-step explanation:

Let f(x) = 0 and solve

2cos (3x) + 1 = 0

2cos (3x) = -1

cos (3x) = -1/2

3x = arccos (-1/2) = 120

x = 40° or 2π/9 rad

7 0
3 years ago
Surface of rectangular prism
viva [34]

Answer:

D. 392

Step-by-step explanation:

5x8=40

5x12=60

12x8=96

40+40+60+60+96+96=392

4 0
3 years ago
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