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Ksenya-84 [330]
3 years ago
6

How am I suppose to find X?

Mathematics
1 answer:
ololo11 [35]3 years ago
6 0
Since we know the triangles are similar, then just use proportions from the corresponding sides, check the picture below.

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I’d love the answer ASAP please
Zepler [3.9K]

Answer:

1872 cm^3

Step-by-step explanation:

To solve this you can split the shape into two parts, the large rectangle with length 18 and width 8, and the small rectangle with length 6 and width 3.

So now apply the volume formula,

for the larger shape,

V = Area * height

V = L*W *H

V = 18*8*12

The volume of one part is 1728.

Now for the second shape on top,

V = L*W*H

V = 6*8*3 = 144

Now add the two, 1728+ 144 = 1872

1872 cubic centimeters

6 0
3 years ago
A study of 420 comma 000 cell phone users found that 134 of them developed cancer of the brain or nervous system. Prior to this
Vesnalui [34]

Answer: (0.00306,0.00334)

Step-by-step explanation:

Given : Sample size : n= 420000

The number of users developed cancer of the brain or nervous system =134

Then , the proportion of users developed cancer of the brain or nervous system :

p=\dfrac{134}{420000}\approx0.0032

Significance level : 1-0.90=0.1

Critical value : z_{\alpha/2}=1.645

The confidence interval for population proportion is given by :-

p\ \pm\ z_{\alpha/2}\sqrt{\dfrac{p(1-p)}{n}}\\\\=0.0032\pm (1.645)\sqrt{\dfrac{(0.0032)(1-0.0032)}{420000}}\approx0.0032\pm0.00014\\\\=(0.00306,0.00334)

Hence, the 90​% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system is (0.00306,0.00334).

4 0
3 years ago
Factor: -12n - 20 they are asking for an expression
katen-ka-za [31]

Answer:

-4(3n+5)

Step-by-step explanation:

Factored -4 out of -12n-20. Let me know if this answers the question!

5 0
3 years ago
Erin gets her exercise by running. The graph shows the distances she covers in a given amount of time. How many hours does it ta
ivanzaharov [21]

Answer:

2½ h  

Step-by-step explanation:

Assume the graph is like the one below.

The graph shows how Erin's distance varies with time.

To find out how long it takes Erin to cover 25 mi, find 25 mi on the vertical axis.

From there, draw a horizontal line until it hits the graph.

Then drop a vertical line to the horizontal axis.

It hits half-way between 2 and 3.

It takes Erin 2½ h to run 25 mi.

7 0
3 years ago
Read 2 more answers
WILL GIVE BRANLIEST TO BEST ANSWER. 25 POINTS!
Likurg_2 [28]

Answer:

if the x is supposed to be squared, the coordinates are (3,2)

4 0
4 years ago
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