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Jobisdone [24]
3 years ago
10

Bridget is asked to simplify the expression below.

Mathematics
1 answer:
mixas84 [53]3 years ago
3 0
So simplify the equation
remember
add like terms
x+x=2x
1+1=2
2x+4x=6x
3x^2+3x^2=6x^2
cannnot add x and x^2

so grou plike terms

-5x-3x+1x+4-1-9
add
-5-3+1=-7  and 4-1-9=-6 so
-7x-6 is the answer
ax+b
-7x-6
a=-7
b=-6
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determine The length of the circular arc of a circle with a radius of 49 cm subtended by a central angle of 135°
Katena32 [7]

Given:

Length of the circular arc with circle radius=49cm

θ=135°

Now,

Length of arc = θ/360°×2πr

49=2× 22/7×r×135°/360°

49×20×7/3×22×2

51.96cm

6 0
1 year ago
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is
katovenus [111]

Answer:

200\ families

Step-by-step explanation:

Already, we are given 12% of our sample size as 24.

To find the sample size, we equate to find 100%.

Let sample size be denoted by t

If\  12\%=24\\100\%=t\\t=\frac{100\%\times24}{12\%}\\=200

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7 0
3 years ago
3. Is XY Tangent to circle Z?<br> Y<br> 12 X<br> (20<br> Z<br> 18
Ratling [72]

Answer:

XY is a tangent

Step-by-step explanation:

Given

XY = 12

WY = 20

WZ = 8

Required

Is XY a tangent?

XY is a tangent if:

WY^2 = XY^2 + WX^2

Because XY should make a right angle at point X with the circle

Where

WX = 2 * WZ

So, we have:

WY^2 = XY^2 + WX^2

WY^2 = XY^2 + (2*WZ)^2

WY^2 = XY^2 + (2WZ)^2

WY^2 = XY^2 + 4WZ^2

This gives:

20^2 = 12^2 + 4*8^2

400 = 144 + 256

400 = 400

<em>Yes, XY is a tangent</em>

4 0
3 years ago
Image of math question below
vitfil [10]
The second one 

Hope this helps :D
7 0
3 years ago
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xxTIMURxx [149]

Answer:

13

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8 0
3 years ago
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