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3 years ago

I'm having trouble answering this question is it possible someone can answer this ASAP?

Mathematics

1 answer:

snow_tiger [21]3 years ago

8 0

Answer:

c. it is 185 cm squared all you do is add the sides and time them

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A coin bank contains only quarters and dimes. The total value of the coins in the bank is $8.80. If the dimes were quarters and

masha68 [24]

Answer:

18 dimes

Step-by-step explanation:

Let the number of dimes be d and quarters be q

The value is $8.80 = 880¢, so:

10d + 25q = 880 ⇒ 2d + 5q = 176

If the dimes were quarters and the quarters were dimes, the coins' total value would be $7.30 or 730¢

25d + 10q = 730 ⇒ 5d + 2q = 146

Now we have 2 equations. Solving the system by elimination, subtract 5 times the second equation from twice the first equation:

2(2d + 5q) - 5(5d + 2q) = 2(176) - 5(146)
4d - 25d = -378
-21d = -378
d = -378/-21
d = 18

8 0

3 years ago

Given the coordinates of the vertices of a quadrilateral, determine whether it is a square, a rectangle, or a parallelogram. The

vodomira [7]

Answer:

2) ABCD is a RECTANGLE.

Perimeter = 30 units

Step-by-step explanation:

Here, the given points of the quadrilateral are:

A(6, –4), B(11, –4), C(11, 6), D(6, 6)

Now, if P(a,b) and Q(c,d) are any two given points, then the distance between them is given by DISTANCE FORMULA as:

$PQ = \sqrt{(c-a)^2 + (d-b)^2$

Use this to find the length of all 4 sides:

AB with coordinates A(6, –4), B(11, –4) is given as:

$AB = \sqrt{(11-6)^2 + (-4-(-4))^2} = \sqrt{(5)^2 + 0} = 5$

⇒ AB = 5 units

BC with coordinates B(11, –4), C(11, 6) is given as:

$BC = \sqrt{(11-11)^2 + (6-(-4))^2} = \sqrt{(0)^2 + 10^2} = 10$

⇒ BC = 10 units

CD with coordinates C(11, 6), D(6, 6) is given as:

$CD = \sqrt{(11-6)^2 + (6-6)^2} = \sqrt{(5)^2 + 0} = 5$

⇒ CD = 5 units

AD with coordinates A(6, –4),D(6, 6) is given as:

$AD = \sqrt{(6-6)^2 + (-4-(-4))^2} = \sqrt{(0)^2 + 10^2} = 10$

⇒ AD = 10 units

Now, here AB = CD = 5 units, AD = BC = 10 units

Also, in a RECTANGLE, OPPOSITE SIDES ARE EQUAL IN LENGTH.

Hence, ABCD is a RECTANGLE.

Perimeter = AB + BC+ CD + AD = 5 + 10 + 5 + 10 = 30 units

8 0

3 years ago

Freeeeeeee pointssssss

user100 [1]

1 plus 1 is two. Thank you.

6 0

3 years ago

Read 2 more answers

If an injectable solution contains 25μg of a dug substance in each 0.5 mL, how many milliliters would be required to provide a p

Kay [80]

Answer:

5mL would be required to provide a patient with 0.25 mg of the drug substance.

Step-by-step explanation:

The problem states that an injectable solution contains 25μg of a dug substance in each 0.5 mL, and asks how many milliliters would be required to provide a patient with 0.25 mg of the drug substance.

So, the first step is the conversion of 25ug to mg, since the problem asks the answer in mg.

Each mg has 1000ug. So

1mg - 1000ug

xmg - 25ug

1000x = 25

$x = \frac{25}{1000}$

x = 0.025 mg

It means that each 0.5mL of the solution contains 0.025mg of the drug. How many milliliters would be required to provide a patient with 0.25 mg of the drug substance.

0.5mL - 0.025mg

xmL - 0.25mg

0.025x = 0.5*0.25

$x = \frac{0.5*0.25}{0.025}$

x = 10*0.5

x = 5mL

5mL would be required to provide a patient with 0.25 mg of the drug substance.

6 0

3 years ago

Please help me prove this theorem thing. I'll give yuh mind kisses <3 have a good day luvlies

lesantik [10]

Answer:

∠ 1 = 20 x + 5

∠ 2 = 24 x - 1

If lines l and m are parallel:

∠ 1 + ∠ 2 = 180°

20 x + 5 + 24 x - 1 = 180

44 x + 4 = 180

44 x = 180 - 4

44 x = 176

x = 176 : 44

x = 4°

Your welcome again :)

Step-by-step explanation:

6 0

3 years ago