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scoundrel [369]
3 years ago
12

Evaluate the expression 7^2/ x^2 - 2 for x = 3

Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0

Answer:

7

Step-by-step explanation:

7²/x²-2 when x=3

49/3²-2

49/9-2

49/7

answer=7

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20 divided by 2(5+5)=
Talja [164]
20 divided by 2(5+5)=100
3 0
4 years ago
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the Royal fruit company produces two types of fruit drinks. The first type is 20% pure fruit juice, and the second type is a 45%
AlexFokin [52]

We know that 20% of the first type of juice is pure fruit juice and 45% of second type of juice is pure fruit juice.

Now we have to make 30 pints of a mixture that is 35% pure.

Let x be the number of pints of first type of juice and y be the number of pints of second type of juice.

So, x+y=30 (Equation 1)

Since, 20% of x + 45% of y = 35.3% of 30

\frac{x}{5}+\frac{9y}{20}=10.5 (Equation 2)

Solving equations 1 and 2,

we get y=18 and x=12.

So, 12 pints of first type of juice and 18 pints of second type of juice are used.

6 0
3 years ago
Which number is missing on the number line below? <br> A –11 C –1 <br> B –5 D 5
Mamont248 [21]

The number that is missing on the number line given is B. -5.

<h3>What number if missing?</h3>

The number that is missing is said to be between -negative 10 and 0.

The intervals between the numbers is 5 which means that only 5s are on this number line.

From the given option, the only number that is in that range is -5 which is less than 0 but more than -10.

The missing number on the number line is therefore -5.

Full question is:

Which number is missing on the number line below?

A number line from negative 15 to 15 by fives. The number between negative 10 and zero is missing.

Find out more on the number line at brainly.com/question/24644930.

#SPJ1

4 0
2 years ago
Type the correct answer in the box.<br> x<br> The value of log,5<br> 10828 15
denpristay [2]

Answer:

190.3

Step-by-step explanation:

190.3 I multiplied sorry if incorrect

7 0
2 years ago
Solve 5x - 3y = 9 for y.
LenKa [72]
5x - 3y = 9
5x = 9 + 3y
5x - 9 = 3y 
( 5x - 9 ) / 3 = y
y = ( 5 / 3x ) - ( 9 / 3 ) ( I just split the common denominator to individual parts ) 
y = 5 / 3x - 3
8 0
3 years ago
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