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FrozenT [24]
2 years ago
14

(2 1/2)× -8=what is 2 1/2 * -8 equal to

Mathematics
2 answers:
VARVARA [1.3K]2 years ago
5 0
I would say your answer is -84
Hope this helps!
Jlenok [28]2 years ago
3 0
It is -20. try doing it on a calculator!
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Define the concept of an angle and show how it should be indicated in Math (notation). Mention at least two ways.​
Vedmedyk [2.9K]

An angle is denoted by the angle symbol ∠ and the three letters representing the name of the angle.

An angle is denoted by the angle symbol ∠ which is then being followed by three letters that will represent the points that form an angle.

Lets say for example, the expression ∠ABC will mean that “the angle is formed by the points A, B and C”

where the vertex of the angle is at the point B as it is in the middle.

Angles can also be of different types like:

An Acute Angle which means an angle is less than 90 degrees.

A Right Angle which means an angle which is exactly 90 degrees.

An Obtuse Angle which is an angle more than 90 degrees and less than 180 degrees.

A Straight Angle which is an angle that is exactly 180 degrees.

And a Reflex Angle which is an angle greater than 180 degrees and less than 360 degrees.

Therefore, an angle is denoted by the angle symbol ∠ and the three letters representing the name of the angle.

Learn more about angles here:

brainly.com/question/25716982

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8 0
1 year ago
Zoya has to earn at least $300 to meet her fundraising goal. She has only 100 bracelets that she plans to sell at $5 each. Which
iren2701 [21]

Answer:

The two inequality are : x ≤  100 and x ≥ 60

So the inequality is : 60 ≤ x≤ 100.

Step-by-step explanation:

6 0
2 years ago
Mr. Stanford’s greenhouse has the dimensions shown. The volume of the greenhouse is 90 cubic yards. Find the missing dimension o
bulgar [2K]

Answer:

h=10\ yd

Step-by-step explanation:

we know that

The volume of the triangular prism of the figure is equal to

V=Bh

where

B is the area of the triangular base

h is the height of the triangular prism

Find the value of B

B=\frac{1}{2}(6)(3)=9\ yd^{2}

we have that

V=90\ yd^{3}

substitute the values and solve for h

90=9h

h=90/9=10\ yd

5 0
3 years ago
The sum of four times a number and five times another number is -28. The sum of nine times the first number and two times the se
Rina8888 [55]

Answer:

<h2>3 and -8</h2>

Step-by-step explanation:

x,\ y-the\ numbers\\\\\text{The sum of four times a number and five times another number is -28:}\\\\4x+5y=-28\\\\\text{The sum of nine times the first number and two times the second number is 11:}\\\\9x+2y=11\\\\\text{We have the system of equations:}\\\\\left\{\begin{array}{ccc}4x+5y=-28&\text{multiply both sides by2}\\9x+2y=11&\text{multiply both sides by (-5)}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}8x+10y=-56\\-45x-10y=-55\end{array}\right}\qquad\text{add both sides of the equation}

.\qquad-37x=-111\qquad\text{divide both sides by (-37)}\\.\qquad\qquad\boxed{x=3}\\\\\text{Put the value of x to the first equation:}\\\\4(3)+5y=-28\\12+5y=-28\qquad\text{subtrac 12 from both sides}\\5y=-40\qquad\text{divide both sides by 5}\\\boxed{y=-8}

3 0
2 years ago
Solve for x: −2x + 5 &lt; 7 (1 point) <br> x &gt; −1 <br> x &lt; −1 <br> x &gt; −6 <br> x &lt; −6
docker41 [41]

Answer:

x < −1

Step-by-step explanation:

-2x + 5 < 7

  • -2x < 7 -5
  • -2x < 2
  • x < 2 ÷ -2
  • x < -1
3 0
1 year ago
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