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3 years ago

What are the answers to these questions?

Mathematics

2 answers:

RoseWind [281]3 years ago

8 0

Answer:
1. 1/4
2. 5/6
3. 87/40
4. 2/11
5. 49/54
6. 3/8
7. 9/2
8. 5
9. 31/9
10. 25/12

nevsk [136]3 years ago

7 0

Answer:

Answer to the first one : 1/4

Answer to the second one : 11/6

Answer to the third question : 87/40

Answer to the fourth question : 2/11

Answer to the fifth question : 77/54

Answer to the sixth question : 3/8

Answer to the seventh question : 41/2

Answer to the eighth question : 5

Answer to the ninth question : 17/3

Answer to the tenth question : 27/4

Answer to the eleventh question : 1/36

Answer to the twelfth question : 160/27

Answer to the thirteenth question : 1/15

Answer to the fourteenth question : 26/63

Answer to the fifteenth question : 1/5

Answer to the sixteenth question : 33/5

Answer to the seventeenth question : 9/20

Answer to the eighteenth question : 1/6

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Solve using substitution x=(3y+1) and x+4y=15

natka813 [3]

The solution is: x= 7 and y = 2

Step-by-step explanation:

Given equations are:

$x = 3y+1\ \ \ \ Eqn\ 1\\x+4y = 15\ \ \ \ Eqn\ 2$

Putting x = 3y+1 in equation 2 from equation 1

$3y+1+4y = 15\\7y+1 = 15\\$

Subtracting 1 from both sides

$7y+1-1 = 15-1\\7y = 14$

Dividing both sides by 7

$\frac{7y}{7} =\frac{14}{7}\\y = 2$

Putting y=2 in equation 1

$x = 3(2) +1\\x = 6+1\\x = 7$

Hence,

The solution is: x= 7 and y = 2

Keywords: Linear equations, substitution method

Learn more about linear equations at:

#LearnwithBrainly

3 0

3 years ago

Solve the equation for x. x2 = 25/784 The solution of the equation is x =

aniked [119]

Step-by-step explanation:

x² = 25/784

Since 25 = 5² and 784 = 28²,

x = ±(5²/28²) = ±5/28.

3 0

2 years ago

Read 2 more answers

PRACTICE ANOTHER The administration of a large university wants to take a random sample to measure student opinion of a new food

Reil [10]

Answer:

81 samples

Step-by-step explanation:

According to the empirical rule :

Possible values of the sample mean is within 3 standard deviations of the population mean :

μ ± 3 sd(x) ; sd(x) = standard deviation of sampling distribution.

3 * sd(x) = 1

sd(x) = 1/3

Recall:

Standard deviation of sampling distribution, sd(x)

sd(x) = σ / sqrt(n)

1/3 = 3 / sqrt(n)

Square both sides

1/9 = 9/n

Cross multiply :

n * 1 = 9 * 9

n = 81

3 0

2 years ago

31.693 Rounded to the nearest Hundredth

ioda

Hi there!

»»————-　★　————-««

I believe your answer is:

31.69

»»————-　★　————-««

Here’s why:

⸻⸻⸻⸻

'9' is in the hundredths place. The rounding is the digit to it's right, or '3'.
Since 3 is less than or equal to 4, we would round down.

⸻⸻⸻⸻

31.693 ≈ 31.69

⸻⸻⸻⸻

»»————-　★　————-««

Hope this helps you. I apologize if it’s incorrect.

7 0

2 years ago

Can someone help me please

defon

Answer:

181.25 square feet

1/6 quart water

1/18 cup milk

1/3 beef bouillon cube, and 2/3 a large carrot

Step-by-step explanation:

5 0

2 years ago