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statuscvo [17]
3 years ago
10

4x - y + 7x y simplfy the expression

Mathematics
1 answer:
-Dominant- [34]3 years ago
5 0

Answer:

{ \tt{4x - y + 7xy}} \\  \\ \dashrightarrow \:{ \tt{4x - y(1 - 7x)}}

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1. Dolores is on a bridge that is 42 feet above a lake. What is the distance from Dolores to the boat? G​
mrs_skeptik [129]

Answer:

See answer below

Step-by-step explanation:

You are missing data such as the angle of the boat next to Dolores. I found an exercise similar to this, and I'm going to show it here and use the missing data to show you how to do it:

<u>Dolores is on a bridge that is 45 feet above a lake. She sees a boat at a 30 degree angle of depression. What is Dolores' approximate horizontal distance from the boat?</u>

<u></u>

According to that, I will use the angle of 30° to do this, but the distance of 42 feet.

Now, we can see this as a triangle. Dolores is on a bridge 42 feet above a lake, this 42 feet distance should be one side of the triangle (The vertical forming the 90° angle), and the boat that is on the lake, is seen with an angle of 30°. So the distance of the boat, to the spot where dolores is, under the bridge would be the horizontal side.

With this, we have the opposite side (a) and the adyacent side (b) of the triangle, and we have the angle, therefore:

tanα = a/b

Replacing we have:

tan30° = 42/b

b = 42 / tan30°

b = 72.75 feet

Hope this helps

4 0
3 years ago
Juanita and Nina are bowling together. The probability of Juanita getting a strike next game is 24%. The probability of Nina get
Ivanshal [37]

Answer:

Step-by-step explanation:

0.24 is greater than 0.17, and therefore J's getting a strike next game is more likely.

5 0
2 years ago
Read 2 more answers
A square pyramid has sides of 4 m. Each face is an equilateral triangle. What is the lateral area of the pyramid?
Alisiya [41]

Answer:

The lateral area is equal to

LA=64\sqrt{3}\ m^{2}

Step-by-step explanation:

3 0
2 years ago
Please help me answer thanks.
Dmitry_Shevchenko [17]

Answer:

see explanation

Step-by-step explanation:

Given that M is directly proportional to r³ then the equation relating them is

M = kr³  ← k is the constant of proportion

To find k use the condition when r = 4, M = 160, thus

160 = k × 4³ = 64k ( divide both sides by 64 )

2.5 = k

M = 2.5r³ ← equation of variation

(a)

When r = 2, then

M = 2.5 × 2³ = 2.5 × 8 = 20

(b)

When M = 540, then

540 = 2.5r³ ( divide both sides by 2.5 )_

216 = r³ ( take the cube root of both sides )

r = \sqrt[3]{216} = 6

5 0
3 years ago
What is the answer for <br> h+6/5=2
WARRIOR [948]

h=4 because 4+6=10 and 10/5=2

6 0
3 years ago
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