If sec 50 = cosec 70, prove that 0 = 7.5°​

First of all I wanna point out a minor mistake!

this is not a rectangular prism, the base of this picture is actually the side facing us and the back side. Making this a triangular prism.

We can start by finding the 2 triangles which are the bases.

Each triangle have area:10*24/2

Now because there are 2 same triangles we can get rid of the /2 and get the area of the triangles in the diagram is 10*24=240

We could do the other three sides 1 by 1, let's start with the side on the left of the shape. It has area 24*19=456 because the bottom is a rectangle so we could just use the 19.

Now we can do the side that is diagonal and on the right. It has area of 26*19=494.

Now just 1 more side the bottom, it has area of 10*19=190. Everything is in cm^2 as a unit because we are dealing with area.

Now we just need to add everything together.

240+456+494+190= 1380

Hope it helps! any questions about my answer please just leave in the comment I will get to it when I have time.

Answer:

your answer is 1380

Step-by-step explanation:

240+456+494+190= 1380

Answer:

6r + 6

Step-by-step explanation:

Answer:

6r+6

Step-by-step explanation:

Distribute the negative to the parenthesis

8-6r-2

Combine like terms

6r+6

Answer: 14500

Step-by-step explanation:

Let the price of the mobile phone before the GST was added be represented by x.

Therefore,

x + (12% × x) = 16240

x + 0.12x = 16240

1.12x = 16240

x = 16240/1.12

x = 14500

The price of the mobile phone before the GST was added was 14500

Answer:

we need to diagram to answer this question for you, can you show us a picture of the diagram please?

Answer:

the first one is 57

the second one is 60

3rd one is 13

4th one is 9

Step-by-step explanation:

hope this helps :) have a nice day !!

**please let me know if this was wrong**

Answer:

1) In the second step, it was supposed to multiply 9 and 2 and 36 by 3 instead of adding 9 and 3 to each other because multiplication and division comes before adding, according to pemdas.  

2) In the second step, they were supposed to multiply 6 and 4 instead of subtracting 27 and 6 because multiplication comes before subtraction, according to pemdas.

3)

(43 - 20) - 2 · 5

43 - 20 = 23

23 - 2 · 5

2 · 5 = 10

23 - 10 =

13

4) 81 ÷ (13 - 4)

13 - 4 = 9

81 ÷ 9

81 ÷ 9 =

9

5) 7 · 8 - 3 · 6 + 1

7 · 8 = 56

3 · 6 = 18

56 - 18 + 1

56 - 18 = 38

38 + 1 =

39

6)

7)

8)

Step-by-step explanation:

1) Pemdas says multiplication and division comes before adding, so you must solve the multiplication in the problem first before the addition.  

2) Again, as pemdas says, multiplication comes first before subtraction, so you must solve the multiplication in the problem first before the sutraction.

3) (43 - 20) - 2 · 5

Pemdas says to solve the parenthesis first.

Now multiplication comes next (because there's no exponents).

Now subtraction.

4) 81 ÷ (13 - 4)

Pemdas says to solve the parenthesis first.

Now division comes next.

5) 7 · 8 - 3 · 6 + 1

Pemdas says to solve the multiplication first.

Now subtraction and addition.

6)

7)

8)

P.S. I am updating

Answer:

£8297.29

Step-by-step explanation:

£22 000 x 0.85 to the power of 6=£8297.29

Answer:

We can't seee the whole problem...

Step-by-step explanation:

Answer: 615

Step-by-step explanation: brainliest please

Answer:

2

Explanation:

In short terms, there are two numbers that are reciprocals of themselves, 1 and -1.  According to euler's identity, e^(-i*2*pi) is a reciprocal of itself, but I believe that is beyond the scope of this question.

Answer:

[tex]\boxed {\boxed {\sf 2 \ real \ solutions }}[/tex]

Step-by-step explanation:

The quadratic formula is:

[tex]{x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}[/tex]

The discriminant of a quadratic is just the expression under the square root, or [tex]b^2-4ac[/tex]. This can tell us the number of solutions a quadratic has.

If the discriminant is:

Our quadratic equation has a discriminant of 5, which is positive. Therefore, it has 2 real solutions.

Answer: when it’s a less than or greater than

Step-by-step explanation:

Answer:

66 students

Step-by-step explanation:

To find how many played bass instruments, multiply 120 by 0.55

120(0.55)

= 66

So, 66 students played bass instruments

Answer:

75

Step-by-step explanation:

they gave u 105 it is parallel to the line above it so u add them

105+105=210

then u subtract with 360 which forms a full angle

then u get 150

now u got the total of 2 angles so u divide them with2 to get 1 angle

then the answer is going to be 75

Answer:

43

Step-by-step explanation:

3 to the third power is 27

then 4 to the second power is 16

you add them 27+16 and you get 43

Answer:

43

Step-by-step explanation:

3³+4²= 3*3*3+4*4=27+16=43

Answer:

0.15(40)=6

p=46

Step-by-step explanation:

Answer:

(a)parallel

Step-by-step explanation:

they have the same slope so they're parallel

Answer:

uhhhhhhh nice

Step-by-step explanation:

Answer:

Just why

Step-by-step explanation:

Answer:

The answer is number 4

Step-by-step explanation:

The mark equal to the subject with larger or smaller means that the figure should also shake either if there is no equal to smaller than or larger than that can not shake this number

If you need any explanation you can communicate with me

Answer:

subtract 1 from both sides... then divide 5 both sides

Answer:

1/7, 1/49

Hope this helps you.

Answer:

your answer is in this attachment

Step-by-step explanation:

hope it's helpful to you

have a great day ahead

Answer:

X is 26

Step-by-step explanation:

Hahahah don't be mad

One straight line is 180°

So

2x-10+5x+8 = 180

7x = 180-8+10

X = 26

Answer:

v=-12

Step-by-step explanation:

-8=v+4

-4     -4

-12=v

Answer:

v = -12

Step-by-step explanation:

We have the equation v + 4 = -8

Subtract 4 from both sides.

v + 4 - 4 = -8 - 4

+4 and -4 cancel one another out.

We get v = -12.

I would appreciate brainliest but if not that's ok!

Answer:

A. 3*6-4-4

Step-by-step explanation:

He starts with 3 rows of 6 eggs, which can be shown in the formula 3*6, and each time he is taking away 4 eggs and hew does that twice so the only logical explanation is A. 3 x 6 - 4 - 4.

Answer:

NQ is perpendicular to OM

Step-by-step explanation:

NQ is perpendicular to OM

Answer:

B.) 42.9

Step-by-step explanation:

The percent that we are trying to find out is 12/28

I know this because if you add the 12 and 16 which is the total amount of people given then it leaves us with an amount of 28 people. Since we are trying to find the percent of the number of people who like fish we have to divide the total by 12 (the number of people who like fish)

Anyways 12 divided by 28 = 42.857etc.

If we simplify this then that gives us our answer of B.) 42.9

Answer:

2 and 4 I am pretty sure. hopeful that's correct.

Step-by-step explanation:

x+30+90=180 sum of angle of triangle

x=180-120

x=60

Answer:

1309

Step-by-step explanation:

1233 + 12 x 19 / 3 =

1233 + 228 / 3 =

1233 + 76 = 1309

Hope that helps!

Answer:

1,309 eso es con la calculadora sale