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pantera1 [17]
3 years ago
15

A model of a house is shown. what is the perimeter in units of the model? To receive brainliest show all your work.

Mathematics
1 answer:
Vesnalui [34]3 years ago
5 0

Answer:

The perimeter in units of the model is (86x+24)\ units

Step-by-step explanation:

we know that

The perimeter of the figure is equal to the perimeter of the rectangle plus the  the length sides of the legs of the isosceles triangle

so

P=2(17x+8)+2(21x+5)+2(5x-1)\\ \\P=(34x+16)+(42x+10)+(10x-2)\\ \\P=(86x+24)\ units

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Frankie and Gus swam for 10 minutes. When the time was up, Frankie had completed 10 7/10 tags and Gus had completed 10 4/5 laps.
telo118 [61]

Answer:

Step-by-step explanation:

10 4/5 = 10.8

10 7/10 = 10.7

Frankie did not swim the longest distance.

Gus did.

10.8>10.7

7 0
3 years ago
12. If a manufacturer conducted a survey among randomly selected target market households and wanted to be 95% confident that th
atroni [7]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

Step-by-step explanation:

We have the following info given:

Confidence= 0.95 the confidence level desired

ME =0.03 represent the margin of error desired

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

The confidence level is 95% or 0.95, the significance is \alpha=0.05 and the critical value for this case using the normal standard distribution would be z_{\alpha/2}=1.96

Since we don't have prior information we can use \hat p= 0.5 as an unbiased estimator

Also we know that ME =\pm 0.03 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.03}{1.96})^2}=1067.11  

And rounded up we have that n=1068

6 0
3 years ago
3HELP__________________
Brut [27]

Answer:

m∠KIJ = m∠LIM ⇒ answer B

Step-by-step explanation:

* Lets explain how to solve the problem

∵ I is the mid-point of NH

∴ IN = IH

- MJ is perpendicular to NH and passes through I the mid-point of NH

∴ MJ is perpendicular bisector of NH

- NH ⊥ MJ and intersects it at I

∴ m∠NIM = m∠NIJ = 90°

- ∠ NIM consists of two angles ∠NIL and ∠MIL

∵ m∠NIM = m∠NIL + m∠MIL

- ∠NIJ consists of two angles ∠NIK and ∠JIK

∵ m∠NIJ = m∠NIK + m∠JIK

∴ m∠NIL + m∠MIL = m∠NIK + m∠JIK ⇒ (1)

∵ NH bisects ∠KIL

∴ m∠NIL = m∠NIK ⇒ (2)

- From (1) and (2)

∴ m∠MIL = m∠JIK

* m∠KIJ = m∠LIM

7 0
3 years ago
Which is the exponential form of log8 x=3
Ostrovityanka [42]

Answer:

x = 8^3

Step-by-step explanation:

To rewrite an equation with logs in exponential form, you need to know

logb(a) = m  is equivalent to   a= b^m


So given    log8 (x) = 3   is equivalent to   x = 8^3

                     

6 0
3 years ago
M is the midpoint of line segment CD. The coordinates M(-1,1) and C(1,-3) are given. Find the coordinates of point D.
dexar [7]

Answer:

All you have to do is use the formula for coordinates of a midpoint of a line segment. If the segment's ends are  

A

=

(

x

A

,

y

A

)

and  

B

=

(

x

B

,

y

B

)

, then the midpoint has coordinates:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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