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4 years ago

Which of the following could be the sides of a triangle

Mathematics

1 answer:

Setler [38]4 years ago

6 0

If the two smaller numbers equal the biggest number, it can't be a triangle. The two sides have to be bigger than the bigger side
a) 6 cm, 6 cm , 12cm 6 + 6 = 12. N0 TRIANGLE
b) 19 cm, 27 cm, 10cm. 19 + 10 = 29 YESS TRIANGLE
c) 3cm, 7cm, 19cm 3 + 7 = 10 N0 TRIANGLE
d) 20ft, 10ft, 5ft 10 + 5 = 15 N0 TRIANGLE

THE ANSWER IS B

The answer of the second problem is B) 29cm since 10 + 17 = 27 and it has to be a bigger number

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The soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles. T

Evgen [1.6K]

Plug 50 into y and find x.

5x + 10 (50) = 800
5x + 500 = 800
5x = 800 - 500
5x = 300
x = 300 ÷ 5
x = 60

3 0

3 years ago

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HELP PLEASE, THIS IS IN MATH CLASS AND IM VERY CONFUSED TY AND HAVE A GOOD DYA

Lady bird [3.3K]

Answer:

Step-by-step explanation:

YES WICH IS BASICLY 2

4 0

3 years ago

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A welder drops a piece of red-hot steel on the floor. The initial temperature of the steel is 2,500 degrees Fahrenheit. The ambi

sergey [27]

Answer: After 18.05 minutes, the temperature of steel becomes 100 degrees.

Step-by-step explanation:

Since we have given that

Initial temperature = 2500

At t = 0,

we get that

$f(t)=Ce^{-kt}+80\\\\2500=C+80\\\\2500-80=C\\\\2420=C$

After 2 minutes, the temperature of the steel is 1500 degrees.

so, it becomes,

$1500=2420e^{-2k}+80\\\\1500-80=2420e^{-2k}\\\\\dfrac{1420}{2420}=e^{-2k}\\\\0.587=e^{-2k}\\\\\ln 0.587=-2k\\\\-0.533=-2k\\\\k=\dfrac{0.533}{2}\\\\k=0.266$

So, We need to find the number of minutes when the temperature of steel would be 100 degrees.

So, it becomes,

$100=2420e^{-0.266t}+80\\\\100-80=2420e^{-0.266t}\\\\20=2420e^{-0.266t}\\\\\dfrac{20}{2420}=e^{-0.266t}\\\\\ln \dfrac{20}{2420}=-0.266t\\\\-4.8=-0.266t\\\\t=\dfrac{4.8}{0.266}\\\\t=18.05$

Hence, after 18.05 minutes, the temperature of steel becomes 100 degrees.

7 0

3 years ago

A cone has a volume of 12 cubic inches. What is the volume of a cylinder that the cone fits exactly inside of?

Stells [14]

36in^3
as the volume of a cone is 1/3 that of the volume of a cylinder the smallest cylinder that the cone can fit inside of is one that is exactly 3x its the volume

5 0

4 years ago

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How to factorised quadratics<br>in simple form thank you

photoshop1234 [79]

Answer:

ax²+ bx + c = 0

Step-by-step explanation

Multiplying (x+4) and (x−1) together (called Expanding) gets x2 + 3x − 4 :

expand vs factor quadratic

So (x+4) and (x−1) are factors of x2 + 3x − 4

Just to be sure, let us check:

(x+4)(x−1) = x(x−1) + 4(x−1)

= x2 − x + 4x − 4

= x2 + 3x − 4 yes

Yes, (x+4) and (x−1) are definitely factors of x2 + 3x − 4

6 0

4 years ago