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seraphim [82]
3 years ago
11

If two of the angles of a triangle are 30 and 70 degrees, the third angle measures...?

Mathematics
1 answer:
Masteriza [31]3 years ago
7 0

Answer:

80°

Step-by-step explanation:

Since a triangle has three angles that add up to 180°, you add the two given angles and subtract it from 180°.

1

70° + 30° = 100°

2

180° - 100° = 80°

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QveST [7]
It's 21.125 hope this works good luck ;)
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3 years ago
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a kitchen is shaped like a rectangle with dimensions of 4ft by 7ft. The floor of the rooms is made up of square tiles with a sid
Darina [25.2K]

Answer:

112 tiles

Step-by-step explanation:

Area = 28ft sq

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= 4 x 28 = 112

112 x 0.25 = 28 to check.

112 x 0.25 x 4 = 112 is the multiplier to check again.

5 0
3 years ago
22. Solve 7x - 9 = 28+ 4(x - 1).<br> X=-3<br> X=3<br> x = 11<br> X=-11​
aleksley [76]

Answer:

c) x = 11

Step-by-step explanation:

Given equation: 7x - 9 = 28 + 4(x - 1)

<u><em>Steps:</em></u>

1. Distribute 4 through the parentheses:

7x - 9 = 28 + 4(x) + 4(-1)

7x - 9 = 28 + 4x - 4 [simplify]

7x - 9 = 24 + 4x

2. Subtract 4x from both sides:

7x - 4x - 9 = 24 + 4x - 4x

3x - 9 = 24

3. Add 9 to both sides:

3x - 9 + 9 = 24 + 9

3x = 33

4. Divide both sides by 3:

3x ÷ 3 = 33 ÷ 3

x = 11

5. Check your work:

7x - 9 = 28 + 4(x - 1) [substitute 11 for x]

7(11) - 9 = 28 + 4(11 - 1) [simplify]

77 - 9 = 28 + 4(10) [simplify]

68 = 28 + 40 [add]

68 = 68 ✔

Learn more here:

brainly.com/question/27844321

brainly.com/question/21222758

7 0
2 years ago
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The 5's in 7,595_<br>How many times less?​
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Answer:

it may be 79 or 7090 or

Step-by-step explanation

if u subtract 7595-55=7540

3 0
3 years ago
-4x 3y = -2<br><br> y = x -1
MA_775_DIABLO [31]

Answer:

The answer is:  X= -1 and y= -2 so <em><u>(-1,-2)</u></em>

hope this helps

5 0
3 years ago
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