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3 years ago

9

Do all triangles have right angles why or why not

2 answers:

katen-ka-za [31]3 years ago

8 0

No all triangles have right angle a right angle is a angle measurement of 90 degrees. some triangles are equal sides yes like 60 degrees on each angle. and the angle must equal 180 degrees. not 360 that is a whole different shape.

Papessa [141]3 years ago

3 0

Not all triangles have right angles. A triangle is simply a closed figure with three sides and three angles, the sum of the degrees of which add up to 180°.

For instance, an equilateral triangle will will have all three angles equal to each other (60°, 60°, 60<span>°).

Some triangles may have right angles (90</span><span>°), but not all do.
Hope that helped =)</span>

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Which of the following systems of inequalities has Point C as a solution?

sleet_krkn [62]

Answer:

Option A.

$f(x)\leq 3x+4$

$g(x) \leq-\frac{1}{2}x-5$

Step-by-step explanation:

we know that

If point C is a solution of the system of inequalities, then point C must satisfy both inequalities

Point C is located below the solid line f(x) and below the solid line g(x)

so

The shaded region of the solution set of the system must be below of the inequality f(x) and must be below of the inequality g(x)

therefore

The system is

$f(x)\leq 3x+4$

$g(x) \leq-\frac{1}{2}x-5$

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3 years ago

Simplify the expression.<br><br>(1.08 x 10^-3) x (9.3 x 10^-3) ÷ 0.1

AlekseyPX

<span>1.2555⋅<span>10^<span>−<span>6
</span></span></span></span>Explanation:

<span><span><span>(1.08⋅<span>20<span>−3</span></span>)</span><span>(9.3⋅<span>10<span>−3</span></span>)</span>=<span>1.08<span><span>(20)</span>3</span></span>⋅<span>9.3<span><span>(10)</span>3</span></span>=<span><span>1.08⋅9.3</span><span>8⋅<span>106</span></span></span>=1.2555</span><span>⋅<span>10<span>−6</span></span></span></span>

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2 years ago

allochka39001 [22]

Answer:

50 + 200h

Step-by-step explanation:

4 0

3 years ago

Megan is making quilts that require 11 feet of cloth each. She has 50 feet of cloth. What are the possible numbers of quilts tha

goldenfox [79]

Answer:

4

Step-by-step explanation:

Because the fact the quits are ll feet there are 6 feet left over but that can not make 11 feet quilt

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3 years ago

The monthly charge for a waste collection service is 1830 dollars for 100 kg of waste and 2460 dollars for 135 kg of waste. (a)

Ulleksa [173]

Answer:

$C=18w+30$

Step-by-step explanation:

We are given that The monthly charge for a waste collection service is 1830 dollars for 100 kg of waste

So, $(x_1,y_1)=(100,1830)$

We are also given that The monthly charge for a waste collection service is 2460 dollars for 135 kg of waste.

So, $(x_2,y_2)=(135,2460)$

We are supposed to find a linear model for the cost, C, of waste collection as a function of the number of kilograms, w.

So, we will use two point slope form :

Formula : $y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

Substitute the values

$y-1830=\frac{2460-1830}{135-100}(x-100)$

$y-1830=18(x-100)$

$y-1830=18x-1800$

$y=18x-1800+1830$

$y=18x+30$

y denotes the cost

x denotes the weight

So, Replace y with C and x with w

$C=18w+30$

So, a linear model for the cost, C, of waste collection as a function of the number of kilograms, w is $C=18w+30$

7 0

2 years ago