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astra-53 [7]
4 years ago
11

A test has 100 questions. Cora got 85 questions correct. What decimal shows the part of the test she answered correctly? What de

cimal shows the part of the test she answered incorrectly?model the decimals below.
Mathematics
2 answers:
Eva8 [605]4 years ago
5 0
Cora got 85% of it correct so the decimal form would be 0.85
adoni [48]4 years ago
5 0
85/100 would be what she got CORRECT, and then 15/100 would be what she got INCORRECT. You can easily make them both decimals, because it is over 100, into .85 (the amount she got correct) and .15 (the amount she got incorrect).
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15c² - 5c. Factorise completely ​
KATRIN_1 [288]

Looking at the problem, what we must do to complete this question is to completely factor the expression that was provided.  The expression that was provided is 15c^2 - 5c.

The first step that we must do is to take a look at the expression and see what the two pieces of the expression have in common.  We can see that both 15c^2 and -5c have the number 5 and the variable c associated with them so we can factor out those two.

<u>Factor out 5c</u>

  • 15c^2 - 5c
  • 5c(\frac{15c^2}{5c}) - 5c(\frac{5c}{5c})
  • 5c(3c) - 5c(1)
  • 5c(3c - 1)

Now we have completely factored out the expression that was provided in the problem statement and we came to final answer of 5c(3c - 1).

7 0
2 years ago
Read 2 more answers
Urgent help neededddd
Wewaii [24]

Answer:

176

Step-by-step explanation:

V=\frac{1}{3}\times 8 \times 6 \times 11=176 \:cm^3

8 0
3 years ago
4(2x-3)+8(x-4)=2(2x+6) help plzzz
TEA [102]

Answer:

x = 14/3

Step-by-step explanation:

4(2x-3)+8(x-4)=2(2x+6)

Distribute

8x -12 +8x - 32 = 4x +12

Combine like terms

16x -44 = 4x+12

Subtract 4x

16x-4x -44 = 4x+12-4x

12x -44 =12

Add 44 to each side

12x-44+44 = 12+44

12x = 56

Divide each side by 12

12x/12 = 56/12

x = 14/3

8 0
3 years ago
Read 2 more answers
NEED HELP DUE TODAYY!!!
svetoff [14.1K]

Answer:

144

Step-by-step explanation:

5x + 4x = 7x + 32

9x = 7x + 32

2x = 32

x = 16

7(16) + 32 = 144

I think this is correct

pls mark brainliest if good

7 0
3 years ago
Am I right ? Because I need help with this please thanks.
bazaltina [42]

to find the hypotenuse (or the ramp in question 4) you can use the equation

a^{2} +b^{2} =c^{2}

with a and b being the 3 feet and 9 feet and c being the unknown (ramp).

So if you plug 3 and 9 into the equation, it looks like this.

3^{2} +9^{2} =c^{2}

then square them.

9+81=c^{2}

simplify.

90=c^{2}

take the square root of both sides.

\sqrt{90} = c

\sqrt{90} is approx. 9.5 so the answer would be H.

7 0
3 years ago
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