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4 years ago

Please show how you get the answers to these questions Thanks to whoever helps me out <3

Mathematics

2 answers:

Natalija [7]4 years ago

6 0

X/7 = 18/21
Lets Reduce:
21/7=3 so we know for every 3 in 18/21 we have one in x/7
This means 6/7=18/21
Check:
18/6=3
21/7=3

bezimeni [28]4 years ago

6 0

the first one is going to be 21x ok and they u multiply the other numbers for the first one and then u divide whatever u get for 7*18 and divide it by 21 ok. second one do the same thing but it will be 18x, multiply 24*3,divide it by the 18x.

and the last one if you got a calculator put it in

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The length of overline CD is 12 units. C^ prime D^ prime is the image of overline CD under a dilation with a scale factor of n.

Rufina [12.5K]

Answer:

A, D , and E

Step-by-step explanation:

We have that:

$\overline{CD} = 12 \: units$

$\overline{C'D'}$

is the image of CD after a dilation of scale factor n.

We use the relation between the image length and object length:

$\overline{C'D'} = n \times \overline{CD}$

Option A

If n=3/2, then

$\overline{C'D'} = \frac{3}{2} \times 12 = 3 \times 6 = 18 \: units$

This is true.

Option B

If n=4, then

$\overline{C'D'} = 4 \times 12 = 36 \: units$

This is false.

Option C

If n=8, then

$\overline{C'D'} = 8 \times 12 = 96 \: units$

This too is false.

Option D

If n=2, then

$\overline{C'D'} = 2 \times 12 = 24 \: units$

This is true

Option E

If n=3/4, then

$\overline{C'D'} = \frac{3}{4} \times 12$

$\overline{C'D'} = 3 \times 3 = 9 \: units$

This is also true.

4 0

3 years ago

I need help finding this question out

alekssr [168]

Answer:

I think the first answer 2 would be the slope and the 1 would be the intercept and for the second one the answer is 5 would be the slope and the other 5 would be the intercept.

Step-by-step explanation:

4 0

3 years ago

Jeanie has a 3/4 yard peice of ribbon. She needs one 3/8 yard piece and one 1/2 yard piece. Can she cut the piece of ribbon into

sdas [7]

No,if you add 1/2 and 3/8 you get 7/8 which is greater than the original 3/8

5 0

3 years ago

If x+y+z=13 what is the value of (x-1)+(y+1)+(z-1)

Nezavi [6.7K]

Answer:

Step-by-step explanation:

(x-1)+(y+1)+(z-1)

= x -1 + y + 1 + z - 1

= x + y + z -1

= (x + y + z) -1

given that x+y+z = 13, substitute this value into the equation aove

(x + y + z) -1

= 13 - 1

= 12

5 0

3 years ago

Pls help LOL I WILL MARK U BRAINLIEST‼️‼️‼️‼️

LiRa [457]

Answer:

B=17

A=16

Step-by-step explanation:

It is my friend OK if you want say again and I can ans

5 0

3 years ago