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snow_tiger [21]
3 years ago
14

If 13 = 4.5 -5k what is the value of k

Mathematics
1 answer:
USPshnik [31]3 years ago
7 0

Answer:

K = negative 1.7

Step-by-step explanation:

4.5- 13 = -8.5

-8.5/5 = -1.7

4.5 - 5(-1.7) = 13

Hope this helped

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Evaluate 4 square root 9 square root 9 over 4 square root 9^5​
Sedbober [7]

\frac{\sqrt[4]{9}.\sqrt{9}}{\sqrt[4]{9^5}}

\frac{9^\frac{1}{4}.9^\frac{1}{2}}{9^\frac{5}{4}}

\frac{9^\frac{6}{8}}{9^\frac{5}{4}}

9^{\frac{6}{8}-\frac{5}{4}}

9^\frac{-1}{2}

8 0
3 years ago
XY bisects DF at point E. If DE=2y and EF=8y-3, find the value of DF​
nirvana33 [79]

Answer:

Step-by-step explanation:

If XY bisects DF at point E, then DE = EF.

Given DE = 2y and EF = 8y-3

2y = 8y-3

subtract 8y from both sides

2y-8y = 8y-8y-3

-6y = -3

y = 3/6

y = 1/2

y = 0.5

DF = DE+EF

DF= 2y+8y-3

DF = 10y - 3

DF = 10(0.5)-3

DF = 5-3

DF = 2

7 0
3 years ago
Which relationship has a zero slope? A two column table with five rows. The first column, x, has the entries, negative 3, negati
horsena [70]

Using linear function concepts, we have that the relationship with a slope of 0 is:

A two column table with five rows. The first column, x, has the entries, -3, -1, 1, 3. The second column, y, has the entries, 2, 2, 2, 2.

<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.

A slope of 0 means that the <u>output is constant</u>, hence the relationship with a slope of 0 is:

A two column table with five rows. The first column, x, has the entries, -3, -1, 1, 3. The second column, y, has the entries, 2, 2, 2, 2.

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

#SPJ1

5 0
2 years ago
In all, 1000 students took a statistics exam worth 150 points. The first quartile (or Q1) for all 1000 scores is 90 points. Abou
Brums [2.3K]

Answer:

The number of students who scored more than 90 points is 750.

Step-by-step explanation:

Quartiles are statistical measures that the divide the data into four groups.

The first quartile (Q₁) indicates that 25% of the observation are less than or equal to Q₁.

The second quartile (Q₂) indicates that 50% of the observation are less than or equal to Q₂.

The third quartile (Q₃) indicates that 75% of the observation are less than or equal to Q₃.

It is provided that the first quartile is at 90 points.

That is, P (X ≤ 90) = 0.25.

The probability that a student scores more than 90 points is:

P (X > 90) = 1 - P (X ≤ 90)

                = 1 - 0.25

                = 0.75

The number of students who scored more than 90 points is: 1000 × 0.75 = 750.

4 0
3 years ago
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What is the value of n?<br><br> Enter your answer in the box.<br><br> n = <br> cm
dmitriy555 [2]
If two chords intersect each other inside a circle, the products of their segments are equal.

3n = 6*4
3n = 24
n = 24/3
n = 8
6 0
3 years ago
Read 2 more answers
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