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3 years ago

Find the value of each variable. Write an equation then solve showing ALL the work A2x+10°

Mathematics

1 answer:

AveGali [126]3 years ago

4 0

Answer:

x = 25

Step-by-step explanation:

The three straight lines in the sides of the triangle means that ALL 3 SIDES ARE EQUAL.

This is an equilateral triangle. So all 3 angles are equal.

We know sum of 3 angles in a triangle is 180. Since 3 of the angles are equal, each angle is:

180/3 = 60

The top angle is given as "2x + 10", thus we can say "2x + 10" is equal to 60 degrees. Now we equate and solve for x:

$2x+10=60\\2x=60-10\\2x=50\\x=\frac{50}{2}\\x=25$

The value of x is 25

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Pleas helpppp please

vlada-n [284]

Answer:

48cm^2

Step-by-step explanation:

We are given some of the measurements of the piece of cardboard.

First, let's find the lengths of all the sides of the cardboard, as it will be easier to then find the area.

Going in clockwise order, from top to bottom, the dimensions are:

4cm, 7cm, 6cm, 2cm, 10cm, 9cm.

Now, we can easily find the area by using the formula BH=Area. Let's split the cardboard into sections that will be easier to find the area of. Say we split it in two, rather like a sneaker with the person wearing a sock showing at the ankle (I have strange explanations, I know).

To find the top part (the sock part) we can multiply 4 by 7 to get 28.

To find the shoe part, we can multiply 10 by 2 to get 20.

Finally, add these areas together to get the total area.

20 + 28 = 48

Another way to do this (if my sock and sneaker explanation was too chaotic for you) would be to imagine that the cardboard piece were an entire rectangle (ignore that chunk that has been cut out).

The area of that would be 90, from 9 by 10 as the side lengths. Then, from earlier, we know that the width and length of the chunk that has been cut out is 6 and 7, so the area that will be cut out is 42.

Subtract 42 from 90 to get 48.

8 0

3 years ago

Pllls help I need it really

mixas84 [53]

Answer:

45655677777765457887543

3 0

3 years ago

The outside temperature was -4°F I the morning and 13 F in the afternoon by how much did the temperature increase?

yulyashka [42]

11 degrees. -4+13=11

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3 years ago

777dan777 [17]

1. The 4 is in the thousands place
2. 50
3. 2,168 + 305 = 2473
4. estimate 156 + 235
160 + 240 = 400
5. 8,631 - 5,950 = 2,681
6. 724 * 17 = 12,308
7. 14÷6,230 = 2.25× $10^{-3}$ 
8. 962÷ 39
960÷ 40 = 24
9. .7
10. 36.90
+7.35
-----------
44.25

11. 9.610
-0.268
----------
9.342

12. 419.2
x 2.54
-------------
16768
209600
838400
--------------
1064.768

13. 4 $\sqrt{128.600}$ (pretend sqrt sign is division sign
 -0
--------
12
-12
--------
 08
- 8
--------
06
-4
----------
20
-20
--------
0
answer: 32.150
14. least to greatest: 0.031, 0.124, 0.31, 0.5, 1.24
15. 29.95
x 36
-----------
17970
- 89850
-----------
107820

5 0

3 years ago

Read 2 more answers

Alex is thinking of a number. He multiplies it by 1,000 then divided it by 10.

sergeinik [125]

Solutions

1) Lets use n as alex's number
⇒ n x 1000
⇒ n ÷ 10
⇒ = 475

To solve the problem do the opposite steps

475 ÷ 1000 = n
n = 0.475

0.475 x 10 = n
n = 4.75

CHECK YOUR WORK

4.75 x 1000 = 4750
4750 ÷ 10 = 475

The answer is correct

⇒ The answer Alex is thinking of is 4.75

6 0

3 years ago

Read 2 more answers