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astra-53 [7]
3 years ago
5

-3x-7y=-14 7x+8y=-9 What’s the x and y?

Mathematics
1 answer:
Pavlova-9 [17]3 years ago
4 0

Answer:

Step-by-step explanation:

Let's graph both functions

The solutions are the coordinates of the intersection point

The intersection point is (-7,5)

So

● x = -7

● y = 5

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andrezito [222]
Where yo mamas attttt , 5-(4)= 23

8 0
3 years ago
Walleye is a common game fish. Adult walleye have a length with a mean of 44 cm and a standard deviation of 4 cm, and the distri
Ostrovityanka [42]

Answer:b. 0.22

Step-by-step explanation:

Since the lengths of adult walleye fishes are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = lengths of walleye fishes.

µ = mean length

σ = standard deviation

From the information given,

µ = 44 cm

σ = 4 cm

We want to find the probability or fraction of fishes that are greater than 41 cm in length. It is expressed as

P(x > 41) = 1 - P(x ≤ 41)

For x = 41,

z = (41 - 44)/4 = - 0.75

Looking at the normal distribution table, the probability corresponding to the z score is 0.22

4 0
3 years ago
A television game show begins with 20 contestants. Each week, the players vote 2 contestants off the show. What is the rate of c
nadya68 [22]

Using a linear function, it is found that the rate of change in this problem situation is of -2 contestants per week.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

Considering the situation described, the number of participants after n weeks is given by:

N(n) = 20 - 2n.

The slope is of -2, hence the rate of change in this problem situation is of -2 contestants per week.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

6 0
2 years ago
3. Find the measure of side DF. See image below.
ad-work [718]

Answer:

d. 5.25

Step-by-step explanation:

make it into two fractions: 6/8 = x/7

solve for x by cross multiplying.

4 0
3 years ago
Factorise 3a2 (squared) - 7a<br><br> What’s the answer?<br> Don’t use the calculator.
sweet-ann [11.9K]

Step-by-step explanation:

{3a}^{2}  - 7a \\ a(3a - 7) \\  \\  \\  \\  \\  \\ hope \: it \: helps \\ stay \: safe \: healthy \: and \: happy

5 0
2 years ago
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