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krok68 [10]
4 years ago
13

Algebra semester a exam Connection students help? 1-4

Mathematics
1 answer:
vovangra [49]4 years ago
6 0
Question 1 is a
question 2 is d
question 3 is a
question 4 is a
question 5 is a
You might be interested in
Hi I need help please
jek_recluse [69]

Answer/Step-by-step explanation:

Recall: if two figures are similar, we know that the ratio of their areas = the square of the ratio of their corresponding sides

Apply this knowledge to solve the problems given.

✔️Problem 1 (4-sided polygon):

Let the missing area be x cm²

Therefore,

\frac{x}{9} = \frac{8^2}{4^2}

\frac{x}{9} = \frac{64}{16}

\frac{x}{9} = 4

Multiply both sides by 9

x = 9*4

x = 36 cm²

✔️Problem 2 (3-sided polygon):

Let the missing area be y cm²

Therefore,

\frac{y}{240} = \frac{8^2}{32^2}

\frac{y}{240} = \frac{64}{1,024}

\frac{y}{240} = \frac{1}{16}

Multiply both sides by 240

y = ¹/16 × 240

y = 15 cm²

✔️Problem 3 (5-sided polygon):

Let the missing area be z cm²

Therefore,

\frac{z}{40} = \frac{3^2}{2^2}

\frac{z}{40} = \frac{9}{4}

Multiply both sides by 40

z = \frac{9}{4} * 40

z = \frac{9}{1} * 10

z = 90 cm²

7 0
3 years ago
Help me solve for X ?<br> 5/8 = x/24<br><br> what is X ?<br> 10<br> 15<br> 20<br> 25
aleksandrvk [35]

Answer:

I belive it is 15

PLZ CORRECT ME IF I AM WRONG PLEASE AND THANK YOU

Step-by-step explanation:

7 0
3 years ago
Are these in scientific notation?
Anastaziya [24]
Hello!

Scientific notation is a number multiplied by 10 to the power of something

So the answers are the first one and the last one

Hope this helps!
8 0
3 years ago
Read 2 more answers
I need help someone did this question but every time I go to look at it again it kicks me off..
aleksandr82 [10.1K]

We will have the following:

A. The function is compressed in the y-axis by a factor of 0.5 and then it is inverted in its direction; since it is a line the line is then decreasing instead of increasing.

B. The function is increased by a factor of 2 in the y-axis and then it is moved 3 units up:

C. The function is increased by a factor of 5/3 (Approximately 1.67) in the y-axis and then it is made so it is no longer increasing, but decreasing:

D. The function is increased in the y-axis by a factor of 9 and then it is moved 9 units down:

8 0
1 year ago
Which statement accurately explains whether a reflection over the X-axis and a 180° rotation would map figure ACB onto itself?​
Arlecino [84]

Using transformation rules, it is found that the correct option is:

No, A'C'B' is located at A(-1,1), C'(-3,4) and B'(-5,1).

--------------------

  • The transformation rule for a reflection over the x-axis is (x,y) \rightarrow (x,- y)
  • The transformation rule for a rotation of 180º is (x,y) \rightarrow (-x,-y)

  • After the reflection over the x-axis: (x,y) \rightarrow (x, -y)
  • Taking the reflection, and rotating: (x,-y) \rightarrow (-x, -(-y)) = (-x,y).
  • Not the same rule, that is, (x,y) \rightarrow (x,y), so it would not map figure onto itself.
  • A(1,1) would be mapped to A(-1,1), for example, thus, the correct option is:

No, A'C'B' is located at A(-1,1), C'(-3,4) and B'(-5,1).

A similar problem is given at brainly.com/question/10547006

8 0
2 years ago
Read 2 more answers
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