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Vladimir79 [104]
3 years ago
6

Can someone please check my answers I WIILL GOVE BRAINLY TO FIRST PERSON THAT ANSWERS!

Mathematics
1 answer:
Rainbow [258]3 years ago
5 0
The first is C. r = 4(4/9)
the second one is B. h = 130
the second one is A. k = 7

i’m so sorry, they’re all wrong
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Write the equation in vertex form: Vertex is (1.-3) and passes through the point (-1,5)
boyakko [2]

Answer:

y = 2(x - 1)² - 3

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (1, - 3), thus

y = a(x - 1)² - 3

To find a substitute (- 1, 5) into the equation

5 = a(- 1 - 1)² - 3

5 = (- 2)²a - 3 ( add 3 to both sides )

8 = 4a ( divide both sides by 4 )

a = 2

Thus

y = 2(x - 1)² - 3 ← in vertex form

6 0
4 years ago
$ 20,000 is invested at a rate of 5% compounded quarterly. Identify the compound interest function ta model the situation. Then
liq [111]

Answer:

the balance after 5 years is: 26540.744

Step-by-step explanation:

Given the information:

  • P = initial balance  = $ 20,000
  • r = interest rate (decimal)  = 5% = 0.05
  • n = number of times compounded annually  = 4
  • t = time  = 5

We have the compound interest function ta model the situation is:

A=P(1+\frac{r}{n} )^{nt}

<=> A = 20000(1+\frac{0.05}{4} )^{4*5}

<=> A = $26540.744

Hence, the balance after 5 years is: $26540.744

7 0
3 years ago
The sum of twice a number and a larger number is 145. The difference between the numbers is 55. Let x represent the smaller numb
Lelu [443]

Answer:

145 :) hope this helps!<3

Step-by-step explanation:

correct me if i'm wrong so no one fails on a test or question

6 0
2 years ago
40 points please help
Flauer [41]

The athlete that has the shortest training ride is athlete A.

The athlete that has the shorter range is Athlete B.

The athlete that has the greater median is Athlete B.

The athlete that has the greater IQR is  athlete A.

<h3>What are the summary statistics?</h3>

A box plot is used to study the distribution and level of a set of scores. The box plot consists of two lines and a box. the two lines are known as whiskers. The first whisker represents the minimum number and the second whisker represents the maximum number. The difference between the whiskers is known as range.

Range of Athlete A = 36 - 13 = 13

Range of Athlete B = 30 - 19 = 11

Training ride of  Athlete A = 16

Training ride of  Athlete B = 21

On the box, the first line to the left represents the lower (first) quartile. The next line on the box represents the median. The third line on the box represents the upper (third) quartile.

Median of  Athlete A = 20

Median of  Athlete B = 25

IQR of  Athlete A = 30 - 16 = 14

IQR of  Athlete B = 28 - 21 = 7

To learn more about box plots, please check: brainly.com/question/27215146

#SPJ1

6 0
2 years ago
Please help....<br> how do you find the slope of y+3=x
NeX [460]

Answer:

y=x-3

Step-by-step explanation: In order to find the slope, you must find out what y is. So you move the 3 to the other side and it becomes negative. thus, the answer is y = x -3

4 0
3 years ago
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