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Alecsey [184]
2 years ago
5

A student received a 76% on an exam. If there were 20 questions on the exam, which ratio would show the number of questions answ

ered correctly to the
total number of questions? A. 20:15 B. 5:20 C. 15:20 D. 20:5
Mathematics
2 answers:
Studentka2010 [4]2 years ago
7 0
The answer is A
I did it and I got it right
cestrela7 [59]2 years ago
4 0

Answer:

A

Step-by-step explanation:

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A projectile fired at 5 m/s from a gun. If the horizontal component of the initial velocity is equal to 4 m/s. What is the value
svlad2 [7]

Answer:

the  \: value \:  of  \: the \:  vertical  \: component \to : \\  (v_v) = 3m {s}^{ - 1}  \\

Step-by-step explanation:

let \: the \: velocity \: be \to \: v \\let \: the \: horizontal \: component \: be \to \: v_h \\ let \: the \: vertical \: component \: be \to \: v_v \\ applying \: the \: pythagorean \: rule \: of \: vectors \to :  \\  {v}^{2}  =  {v_v}^{2}  +  {v_h}^{2}  \\  {v_v}^{2}  =  {v}^{2}  - {v_h}^{2}  \\ {v_v}^{2} = {5}^{2}  - {4}^{2}  \\ v_v =  \sqrt{(25 - 16)}  \\ v_v =  \sqrt{9}  \\ \boxed{ v_v = 3 {ms}^{ - 1} }

5 0
3 years ago
What arithmetic variables look like
juin [17]

Answer:

LETTERS

Step-by-step explanation:

In Arithmetic, variables look like LETTERS.

5 0
3 years ago
for dinner abelita chooses the Italian salad that cost 3.99 before tax and Franco chooses the fettuccine Alfredo that costs $7.1
jolli1 [7]
Abelita and Franco spent $11.74 on food. The sales tax for 5 percent is $56 cents. 

Hope this helped :)
7 0
3 years ago
Read 2 more answers
What are the zeros of the function f(x) =(x^2 - 3x - 10)(x + 4)<br> !!Please help!!!
murzikaleks [220]
F(x) = (x² - 3x - 10)(x + 4) becomes (x - 5)(x + 2)(x + 4) when completely factored. Now set each binomial equal to zero. 

x - 5 = 0
x = 5

x + 2 = 0
x = - 2

x + 4 = 0
x = - 4

Your zeros are at x = - 4, - 2, and 5. Or at (- 4, 0), (- 2, 0), and (5, 0). 
7 0
3 years ago
Pls help I don't understand !! !!
NemiM [27]
100cm is equivalent to 1m so 500cm is equivalent to 5m. What you need to do is divide 500cm (5metres) by 25cm (one quarter of a metre). So the number sentence using 'division' should look like 500cm divided by 25cm which equals 20. Don't forget to use proper symbols for division though. Let me know if this helps:)
5 0
3 years ago
Read 2 more answers
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