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musickatia [10]
3 years ago
14

Janet was asked to use the distributive property. She noticed she was marked wrong but does not know what step she did incorrect

ly. What step was not done correctly for 2 * 4.79?
Step 1: Decompose decimal: 4 + .7 + .09

Step 2: Place in equation 2(4 + .7 + .09)

Step 3: Multiply 2(4) + .7 + .09= 8

Step 4: Answer: 2(4.79)= 9.58

Step 1
Step 2
Step 3
Step 4
Mathematics
1 answer:
kenny6666 [7]3 years ago
7 0

Answer:

You distribute the 2 to all numbers in the 3rd step

Step-by-step explanation:

DISTRIBUTION: you must distribute the outside number to all the inside numbers in the parentheses.

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Answer:

q= -1x

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Step-by-step explanation:

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6 0
2 years ago
The length of the hypotenuse of a right angled triangle exceeds the length of the base by 2cm and exceeds twice the length of th
insens350 [35]

Answer: a = 8;  b = 15;  c = 17

Step-by-step explanation:

c = b + 2  and c = 2a + 1

b = c − 2 and a =  \frac{c-1}{2}

​

c² = b² + a²  

c^{2} = (c-2)^{2} + \frac{c-1}{2}\\

c^{2}= \frac{4 (c-2)^{2}+(c - 1)^{2}  }{4}

4c^{2}={4 (c^{2} + 4 -4c)+c ^{2}  + 1-2c

4c^{2}={4 c^{2} + 16 -16c)+c ^{2}  + 1-2c

c^{2}-18c+17=0

c(c -17)-1(c-17)=0

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c = 1 or c = 17

If c = 1 then b = 1 - 2 = -1, that's not possible

So x = 17

b = 17 - 2 = 15

a = \frac{17-1}{2}  = 8

Length sides of the triangle are 17 cm, 15 cm and 8 cm.

I saw some of this on a site but I want to make sure its correct so we're gonna apply the pythagorean theory and see if its correct.

a^{2} + b^{2} = c^{2} \\8^{2} + 15^{2} = 17^{2} \\64 + 225 = 289\\289 = 289\\

This shows that this is correct.

Hope this helped! Again, some of this was from a site, not from me.

3 0
3 years ago
A cube with a side length of 6 mm has a surface area to volume ratio of
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It has a surface area to volume ratio of 1:1
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3 years ago
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Please help. Thank you
erastova [34]

Answer:

(1, -12)

Step-by-step explanation:

x is the horizontal axis and y is the vertical axis.

The current coordinates of D are (-5, -2).

Translated...

D = (-5 + 6, -2 - 10)

D = (1, -12)

3 0
3 years ago
Solve for x<br> 20<br> 30<br> 40<br> 56
tekilochka [14]

Answer:

30

Step-by-step explanation:

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6 0
3 years ago
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