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2 years ago

Which of the following expressions is not equivalent to (-2)(8 + 6 + -3)?

Mathematics

1 answer:

MArishka [77]2 years ago

8 0

Answer:

D is -31 also i checked to make sure.

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How to do isosceles triangle

nata0808 [166]

An isosceles triangle has 2 equal sides and 2 equal angles

4 0

3 years ago

Find the diameter of the circle with the given circumference.use 3.14 for pi<br><br> C=23 cm

zvonat [6]

Answer:

7.324840764

Step-by-step explanation:

23/3.14=7.324840764

7 0

3 years ago

What is the area of a triangle whose side is 17 meters long

Lunna [17]

Answer:

125.141

Step-by-step explanation:

Assuming that this is an equilateral triangle, I am going to divide this triangle in half to get a right triangle.

17 is our hypotenuse

17/2 = 8.5, this is one of our legs

The other leg is our height, which we will find.

We use Pythagoras Theorem to find the height/leg: $a^{2} +b^{2} =c^{2}$

$17^{2} -8.5^{2} = 216.75$

$\sqrt{216.75}$ = 14.72243186

Now, we use another formula to find the area of the triangle: $\frac{Base*Height}{2}$

14.72243186 × 17 = 250.2813416

250.2813416 ÷ 2 = <u>125.1406708</u>

8 0

3 years ago

Is f(x)=40-1.25x a function

poizon [28]

F(x) = 40 - 1.25x is a function.

7 0

3 years ago

Please help me answer this question

sukhopar [10]

Answer:

her first mistake was on line 3.

line 1: 80 + [2(3 1/2 + 1 1/2)]

line 2: 80 + [2(5)]

line 3: 80 + 10

line 4: 90

Step-by-step explanation:

on line 3 she added 80 + 2, but she should have multiplied 2 by 5. the correct steps would be:

line 1: 80 + [2(3 1/2 + 1 1/2)]

line 2: 80 + [2(5)]

line 3: 80 + 10

line 4: 90

4 0

3 years ago