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Stels [109]
3 years ago
11

Help me please on these questions

Mathematics
1 answer:
Fittoniya [83]3 years ago
8 0
The answer to number 23 is D, 49.
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A circle with radius 142.5 has an arc with a 24 degree angle. What is the length of the arc?
MissTica

Answer:  59.690260418206

The result is approximate. Round that value however you need to.

===========================================================

Explanation:

For a circle with radius r = 142.5, the full distance around the edge (aka perimeter aka circumference) is found by using the formula below.

C = 2*pi*r

C = 2*pi*142.5

C = 895.353906273091

That value is approximate. I used my calculator's stored value of pi to get the most accuracy possible.

That value of roughly 895 represents the distance around a full circle of that radius, but we only want a 24 degree pizza slice.

In other words, we want 24/360 = 1/15 of the full perimeter

(1/15)*895.353906273091 = 59.690260418206

5 0
2 years ago
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What is the substitution <br> 3x-5y=11;x=3y+1
nikitadnepr [17]
Substitute 3x+1 for x. Then solve from there
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3 years ago
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write a two-step equation that involves multiplication and subtraction, includes a negative coefficient, and has a solution of x
Mnenie [13.5K]
-60x+20 = -400
x equals 7
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3 years ago
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Help please ASAP I’m not good at this
stepladder [879]

Answer:

y = 0.7x + 12

Step-by-step explanation:

5 0
3 years ago
Find the derivative of f(x) = 7 divided by x at x = 1.
julsineya [31]
I find it best to switch everything exponents when taking derivatives.
F(x) = 7/x
Same as..
F(x) = 7x^-1
Take derivative..
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Plug in x = 1
F'(1) = -7(1)^-2
F'(1) = -7
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3 years ago
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