1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natima [27]
3 years ago
7

Find the length of y, assume the triangles are similar

Mathematics
2 answers:
vovikov84 [41]3 years ago
6 0

Given:

The length of both triangle are in the same ratio,

2.4:2.8:y = 4.2:x:6.3

To find:

The value of 'y'

Steps:

Since 2.4 : y = 4.2 : 6.3, we can find the value of 'y'

    2.4/y = 4.2/6.3

2.4 * 6.3 = 4.2 * y

     15.12 = 4.2y

15.12/4.2 = y

        3.6 = y

            y = 3.6

Therefore, the value of y is 3.6

Happy to help :)

If you want help, feel free to ask

jekas [21]3 years ago
3 0

Answer:

y = 3.6

Step-by-step explanation:

Since the triangles are similar, we can write the following proportion:

\frac{y}{6.3} = \frac{2.4}{4.2} = \frac{2.8}{x}

We don't need the fraction on the left because it is not necessary to solve for y. Instead, we can simplify the rest:

\frac{y}{6.3} = \frac{2.4}{4.2}

\frac{y}{6.3} = \frac{0.4}{0.7}

Now, we can cross-multiply:

0.7y = 6.3 * 0.4

0.7y = 2.52

y = 3.6

You might be interested in
Which is greater -4 or -5
pychu [463]

Answer:

Step-by-step explanation:

-4 it’s closer to zero

3 0
3 years ago
Read 2 more answers
What is the surface area of the triangular prism? A. 13 in.2 B. 36 in.2 C. 78 in.2 D. 84 in.2
NISA [10]
Answer :36in2


example:
my math teacher told me
4 0
3 years ago
A random sample of 10 shipments of stick-on labels showed the following order sizes.10,520 56,910 52,454 17,902 25,914 56,607 21
sammy [17]

Answer:

Confidence Interval: (21596,46428)

Step-by-step explanation:

We are given the following data set:

10520, 56910, 52454, 17902, 25914, 56607, 21861, 25039, 25983, 46929

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{340119}{10} = 34011.9

Sum of squares of differences = 551869365.6 + 524322983.6 + 340111052.4 + 259528878 + 65575984.41 + 510538544 + 147644370.8 + 80512934.41 + 64463235.21 + 166851472.4 = 2711418821

S.D = \sqrt{\frac{2711418821}{9}} = 17357.09

Confidence interval:

\mu \pm t_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

t_{critical}\text{ at degree of freedom 9 and}~\alpha_{0.05} = \pm 2.2621

34011.9 \pm 2.2621(\frac{17357.09}{\sqrt{10}} ) = 34011.9 \pm 12416.20 = (21595.7,46428.1) \approx (21596,46428)

7 0
3 years ago
What is the surface area of a rectangular prism that is 12cm by 3cm by 5cm?
Cerrena [4.2K]
A = 2lw + 2lh + 2hw
A = 2(12)(3) + 2(12)(5) + 2(5)(3)
A = 72 + 120 + 30
A = 222 cm squared

Hope this helps!! :)
3 0
3 years ago
What is the density of Olivine? Mass = 20g; Volume = 6.15 cubic cm.<br> Round to TWO decimal places
vovangra [49]
3.25 cubic cm per gram
5 0
3 years ago
Other questions:
  • The cost of producing 4 metal units is 204.80. The cost of producing 8 units is 209.60. What is the cost to produce 12
    9·2 answers
  • Pie times two is equivalent to two times pie
    9·2 answers
  • A hypothesis test was conducted to investigate whether the population proportion of students at a certain college who went to th
    9·1 answer
  • Sum of $1000 was invested for 4 years, and the interest was compounded semiannually. If this sum amounted to $1389.08 in the giv
    10·1 answer
  • HELPPPPPPP plz will mark brainliest and 25 pts
    10·2 answers
  • The figures below are made out of circles, semicircles, quarter circles, and a square. Find the area and the perimeter of each f
    5·1 answer
  • Pleasssssssssss can you help me
    7·2 answers
  • Pls help and explain: I only have 3 chances
    6·2 answers
  • Người ta ước tính rằng sau t năm tính từ bây giờ, dân số ở một vùng ngoại ô sẽ là P(t)=20-6/t+1 nghìn người
    14·1 answer
  • PLEASE HELP ASAAPPPPPP!!!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!