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Tamiku [17]
3 years ago
12

Find the perimeter of quadrilateral ABCD. Round to the nearest tenth.

Mathematics
1 answer:
Olegator [25]3 years ago
4 0

Answer:

14.6 units

Step-by-step explanation:

AB = \sqrt{(1-3)^2+(3-5)^2}

AB =\sqrt{8}

BC = \sqrt{(3-1)^2+(-1-3)^2}=\sqrt{20}

CD = \sqrt{(5-3)^2+(3-(-1))} = \sqrt{20}

DA = \sqrt{(5-3)^2+(3-5)^2} = \sqrt{8}

Primeter = \sqrt{8} + \sqrt{20} + \sqrt{20} +\sqrt{8} = 14.6

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9. Write the slope-intercept form of the equation of the line through the given points. Write answer as y=mx+b. through: (-4, 5)
densk [106]

Answer:

y = -x + 1

Step-by-step explanation:

(-4,5) (1,0)

Find distance through a number line.

Distance(Slope):

(5,-5)

Slope form:

y/x, Apply:

-5/5

Reduce:

-1/1 or -1

To find the y-intercept get x to be at zero and see where y ends. Let's use the point (1,0):

(1,0) use slope -1x to get x to zero:

= (0,1)

y-intercept: (0,1)

Now write in slope-intercept form:

y = mx + b

so,

y = -1x + 1 or y = -x + 1 or y = -1/1x + 1

3 0
3 years ago
Read 2 more answers
Help pls!! I’ll give Brainlist!! For questions 1-5 determine if the quadrilaterals are parallelograms or not. Beside the picture
tia_tia [17]

Answer:

1. no

2. yes

3. yes

4. yes

5. no

Step-by-step explanation:

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8 0
3 years ago
Read 2 more answers
What is 7/200 as a decimal
Hitman42 [59]
(7 / 2 ) / 100 

3.5 / 100 

0.035 

So your answer is 0.035
8 0
3 years ago
I’ll award you brainliest if you answer This question
guajiro [1.7K]

Answer:

$2353 at 12.5% and $7647 at 8.25%

Step-by-step explanation:

I'll say a is the amount he invested in one market, and b is the amount in the other.

a + b = 10000, or b = 10000 - a

multiplying the investments with the percentages and adding them together will give the total earned interest.

(a × 0.125) + (b × 0.0825) = 925

0.125a + 0.0825b = 925

Use substitution to solve for a.

0.125a + 0.0825(10000 - a) = 925

0.125 a + 825 - 0.0825a = 925

0.0425a = 100

a = 2352.94

Use substitution to find b

b = 10000 - 2352.94

b = 7647.06

The questions are to the nearest dollar so round a and b.

$2353 and $7647

6 0
3 years ago
Help please!!!
Maslowich

y varies directly with x.

The constant of variation is k = 7

Step-by-step explanation:

We have to check whether both vary directly with each other or not.

Every pair of x and y will be considered one by one

If y varies directly with x, it should satisfy y = kx or k = yx

So,

For x= -2, y=-14

-14 = -2k\\k = \frac{-14}{-2}\\k = 7

For

x=3, y=21

21 = 3k\\ k = \frac{21}{3}\\k = 7

For

x=5, y=35

35 = 5k\\ k = \frac{35}{5}\\k = 7

As k is same for all pairs of x and y, it can be concluded that:

y varies directly with x.

The constant of variation is k = 7

Keywords: Proportion, variation

Learn more about proportion at:

  • brainly.com/question/10703930
  • brainly.com/question/10772025

#LearnwithBrainly

6 0
3 years ago
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