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Sladkaya [172]
3 years ago
15

- (64 - 36 + 5) + (45 - 87) = ?

Mathematics
1 answer:
adoni [48]3 years ago
8 0

Answer:

its -75

Step-by-step explanation:

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Whats the most accurate estimation of 65 77
Gwar [14]
Addition: 70 + 80 = 150.  You round 65 up because the ones digit is greater than and the same with 77.
Multiplication: Round up since both ones digits are bigger than 5.  70 x 80= 5600.
5 0
4 years ago
What is the measure of angle A in the triangle below?
laiz [17]
The answer is 30.
You need to use sine here
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As sum of money double in 20 years on simple interest . It will triple at the same rate in
11111nata11111 [884]
40 years and as rate is 5%
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Can someone help me with this problem ​
Alex_Xolod [135]

Answer:

<h2>A = 20</h2><h2>P = 6√10</h2>

Step-by-step explanation:

The formula of a distance between two points:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

A(-3, 0) , B(3, 2)

AB=\sqrt{(3-(-3))^2+(2-0)^2}=\sqrt{6^2+2^2}=\sqrt{36+4}=\sqrt{40}=\sqrt{4\cdot10}=\sqrt4\cdot\sqrt{10}=2\sqrt{10}

A(-3, 0), D(-2, -3)

AD=\sqrt{(-2-(-3))^2+(-3-0)^2}=\sqrt{1^2+(-3)^2}=\sqrt{1+9}=\sqrt{10}

AB = CD and AD = BC

The area of a rectangle:

A=(AB)(AD)

Substitute:

A=(2\sqrt{10})(\sqrt{10})=(2)(10)=20

The perimeter of a rectangle:

P=2(AB+AD)

Substitute:

P=2(2\sqrt{10}+\sqrt{10})=2(3\sqrt{10})=6\sqrt{10}

4 0
3 years ago
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Answer is B
Each number under the leaf side is the other half of the stem.
Therefore,
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1 | 3 =1.3
3 | 7 =3.7
So on and so forth.
8 0
4 years ago
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