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3 years ago

What is the value of x 2x+3y=45 x+y=10

1 answer:

Volgvan3 years ago

4 0

Assuming this is a system of equations, here is how to find x.

2x + 3y = 45
x + y = 10

Multiply x + y = 10 by 2 so you are able to use the elimination method.

2x + 3y = 45
2x + 2y = 20

Subtract.

y = 25

Now that we've found y, we can plug it in to find x.

x + 25 = 10

Subtract 25 from both sides.

x = -15

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What’s the answer to this please?

Andreas93 [3]

ANSWER

C. Yes, their slopes have product -1

EXPLANATION

The slope of the line connecting

P(1,3) and Q(7,8) is

$= \frac{8 - 3}{7 - 1}$

$= \frac{5}{6}$

The slope of the line connecting
R(5,-7) and S(10,-13) is

$= \frac{ - 13 - - 7}{10 - 5}$

$= - \frac{6}{5}$

Product of the two slopes is

$= \frac{5}{6} \times - \frac{6}{5}$

$= - 1$

Since the product is -1, the slopes are perpendicular.

The correct answer is C.

6 0

3 years ago

Moussa delivered 3/8 of the newspapers on his route in the first hour and 4/5 of the rest in the second hour. What fraction did

Elenna [48]

The answer is 1/3 because if you subtract the denominators. 8 - 5 = 3. Then subtract the numerators. 4 - 3 = 1. Then put the denominator under the numerator. You get 1/3. I hope this helped!

8 0

4 years ago

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Transform the equation to isolate x ax = br + 1. How is

Sonja [21]

Answer:

x = (br + 1)/a

Step-by-step explanation:

Simply divide both sides by <em>a</em> to get our answer.

6 0

3 years ago

If 25 new born babies are randomly selected, what is the probability that the 25 babies

ruslelena [56]

Answer:

Step-by-step explanation:

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.

Answer:

Step-by-step explanation:

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.

Answer:

Step-by-step explanation:

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.

Answer:

Step-by-step explanation:

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.

Answer:

Step-by-step explanation:

Question

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.Question

If 25 new born babies are randomly selected, what is the probability that the 25 babies

are born that their mean weigh less than 3100g?

a. What are the parameters?

b. Construct the normal distribution density curve, then shade your seeking area.

c. Find the Z-score, and construct the standard normal distribution density curve,

then shade your seeking area.

H. Find the probability.

6 0

3 years ago

Please help me asap I need this today

I am Lyosha [343]

First fine the slope.
How?
2 random points and plug them in the slope formula.
In this case :
(-3,0)(0,4) —> 4-0/0-(-3) = 4/3 <— slope
The y intercept is the point where x equals 0
In this case :
(0,4) —> 4 is the y-Intercept
Now, plug in for the equation y= mx + b ( m = slope and b = y intercept)
y = 4/3x + 4
Hope I helped:)

6 0

3 years ago

Read 2 more answers