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Anna11 [10]
3 years ago
12

PLEASE HELP

Mathematics
1 answer:
aliina [53]3 years ago
6 0
Would you be seven?
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Find the approximate perimeter of ABC plotted below.
maksim [4K]

Answer:

B. 21.2

Step-by-step explanation:

Perimeter of ∆ABC = AB + BC + AC

A(-4, 1)

B(-2, 3)

C(3, -4)

✔️Distance between A(-4, 1) and B(-2, 3):

AB = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

AB = \sqrt{(-2 - (-4))^2 + (3 - 1)^2} = \sqrt{(2)^2 + (2)^2)}

AB = \sqrt{4 + 4}

AB = \sqrt{16}

AB = 4 units

✔️Distance between B(-2, 3) and C(3, -4):

BC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

BC = \sqrt{(3 - (-2))^2 + (-4 - 3)^2} = \sqrt{(5)^2 + (-7)^2)}

BC = \sqrt{25 + 49}

BC = \sqrt{74}

BC = 8.6 units (nearest tenth)

✔️Distance between A(-4, 1) and C(3, -4):

AC = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

AC = \sqrt{(3 - (-4))^2 + (-4 - 1)^2} = \sqrt{(7)^2 + (-5)^2)}

AC = \sqrt{47 + 25}

AC = \sqrt{74}

AC = 8.6 units (nearest tenth)

Perimeter of ∆ABC = 4 + 8.6 + 8.6 = 21.2 units

8 0
3 years ago
Manuel needs to make a total of 60 deliveries this week. So far he has completed 36 of them. What percentage of his total delive
Alenkasestr [34]

Answer:

60%

Step-by-step explanation:

It’s simple

He needs to do 60, he has done 36

Percentage = (36/60) * 100

= 60%

5 0
3 years ago
I can't figure it out​
kap26 [50]

Answer:

the first one

Step-by-step explanation:

this picture has the workings

8 0
3 years ago
If a drug has a concentration of 400 mg per 10 ml, how many mL are needed to give 1.5 grams of the drug?
liq [111]

40,

since

400 x 4 + 1.6 grams. which is the closest

4 x 10 = 40

4 0
3 years ago
Find the area of the parallelogram. The figure is not drawn to scale.
valina [46]

Answer:

1330 in.

Step-by-step explanation:

38 x 35 = 1330

3 0
3 years ago
Read 2 more answers
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