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
WITCHER [35]
4 years ago
10

The triangles are similar.

Mathematics
2 answers:
dybincka [34]4 years ago
5 0
36/12=3 Which give you the enlargement of the smaller triangle to the bigger one.

You work out the missing side by putting it into an equation:

3(x-10)=39

Then solve it.

First expand the brackets:

3x-30=39

The rearrange to get x on its own and that will be your answer:

3x=39+30
3x=69
x=69/3
x=23
Sliva [168]4 years ago
3 0

Answer:

x=23

Step-by-step explanation:

The triangles have to be in the same ratio.  Put big triangle side  over little triangle side.

15                  39

----------- = ----------------

5                    x-10

Using cross products

15 * (x-10) = 5 * 39

Divide by 15 on each side

15/15 (x-10) = 5*39/15

x-10 = 13

Add 10 to each side

x-10+10 = 13+10

x=23

You might be interested in
A car covers a distance of 200 m. If its velocity is 20 m/s, calculate the<br>time taken.​
DerKrebs [107]

Answer:

10 seconds

Step-by-step explanation:

Distance = 200 m

Velocity = 20m/s

Time =?

time =  \frac{distance}{velocity}  \\ time =   \frac{200m}{20m/s}  \\ time = 10 \: seconds

8 0
3 years ago
What is the simplified for of 7(-5y⁵)² ?
Darya [45]

1)Answer:

C) 8x² - 2

2) in the image above

Step-by-step explanation:

1)What is the area of the rectangle with the width of 2x - 1 and with the length of

(4x + 2)?

a. 8x² + 2

b. 8x³ - 2

c. 8x² - 2

d. 8x³ + 2

2)What is the simplified for of 7(-5y⁵)² ?

a. 176y¹⁰

b. 175y¹⁰

c. 176y²⁵

d. 178y¹⁵

3 0
3 years ago
What is the probability of rolling 4 even numbers on 4 rolls of a dice
hjlf

Answer:

1/16

Step-by-step explanation:

Possible outcomes when rolling a fair die = 1, 2, 3, 4, 5, 6 (i.e 6 possible outcomes)

Possible outcomes when rolling an even number = 2, 4, 6 (i.e 3 possible outcomes)

Hence P (rolling even number on 1 roll) = 3 / 6 = 1/2

P (Rolling 4 even numbers on 4 rolls) = (1/2)(1/2)(1/2)(1/2) = 1/16

7 0
3 years ago
Pls help! will give brainlist!
nataly862011 [7]

Answer:

B. (-2,3)

Step-by-step explanation:

-3x+5y = 21

x=2y-8

Substitution

-3(2y-8)+5y =21

-6y+24+5y=21

-y+24=21

-y=-3

y=3

Plug-in other equation

2*3-8=x

6-8=x

x=-2

7 0
3 years ago
Emma claims: Tomorrow it will either rain or not rain. The probability that it will rain is 0.5. Is she correct? Explain your an
Stella [2.4K]
Yes, there is a 50% chance it will rain. This leaves the other 50% chance to be that it will not rain. This fills up 100% of the possibilities. It is only logical that it will either rain or it won't, there is no third option.
3 0
3 years ago
Other questions:
  • PLZ HELP ASAP!!
    8·1 answer
  • #13-4: During the recital, the pianist played for 1/6 of an hour. This was 2/6 of the concert. At this rate, how long did the co
    14·1 answer
  • Whats (2^–1)^3 with the same base but one exponent??
    9·1 answer
  • Is the inverse of a function always a function?
    11·2 answers
  • What is the slope of the function y= -1/2 x - 7?
    12·1 answer
  • A bakery needs to make 5 batches of bagels before opening in 3 hours. Each batch of bagels takes 3/4 hour to make.
    7·1 answer
  • Solve for x -10 + x = -12
    15·2 answers
  • Find the slope of the line can you help me ?
    9·1 answer
  • How many integers between -9 and -10
    7·1 answer
  • Dans un repère du plan, on donne les points (−2 ; 3), (6 ; 2) (−1 ; 0).
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!