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Svetradugi [14.3K]
3 years ago
7

4. The figure denotes a circular lamina of radius 28 cm.

Mathematics
1 answer:
m_a_m_a [10]3 years ago
4 0

Answer:

idk

Step-by-step explanation:

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Which pf the following show 2/8=1/4?
Maksim231197 [3]

Answer:

A

Step-by-step explanation:

Don't know every option makes sense.

I think I will go with A because the size of the shape remains the same.


//Not sure.

5 0
3 years ago
If f(x) = x2 + x - 8, find f(-3).
dalvyx [7]

Answer:

-17

Step-by-step explanation:

it's telling you to replace x with -3.

You have to replace all the x's with -3.

(-3)2 + (-3) - 8 = -17

5 0
2 years ago
Which of the following polynomials has solution that are real numbers ?
slava [35]
I think that the only polynomial that has a solution that are real numbers is:

B) x² + 4x + 3 = 0
(x + 3) (x + 1) → x² + 1x + 3x + 3 → x² + 4x + 3

(x+3) = 0 → x = -3

(x + 1) = 0 → x = -1

Real numbers are number that are whole numbers, rational and irrational numbers, positive and negative numbers, and even zero. 
7 0
3 years ago
Circle O has tangent AB and secant AC as shown. arc BC measures 4x+2-. arc BE measures 2x-10. What is the measure of arc CB
dangina [55]

Answer:

b. 160°

Step-by-step explanation:

angle A = (far arc - near arc)/2

far arc is  arc BC and near arc is arc BE. Replacing into the equation:

∠A = (arc BC - arc BE)/2

50 = [4x + 20 - (2x - 10)]/2

50*2 = 2x + 30

x = (100 - 30)/2

x = 35°

Replacing this information into arc BC equation:

arc BC = 4(35) + 20 = 160°

7 0
3 years ago
A sundial that measures 38 inches across its center is shown on the concrete slab. In terms of π, what area of the slab is cover
OLEGan [10]
A=pi19^2, will be the area of the sundial
5 0
3 years ago
Read 2 more answers
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