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3 years ago

How to solve 4x+7=15

2 answers:

7 0

<span>4x+7=15

First step is to subtract 7 from both sides to get rid of it.
4x + 7 - 7 = 15 - 7
4x = 8

Now all you have to do is divide both sides by 4.
4x/4 = 8/4
x = 2

The answer is x = 2.</span>

Svetlanka [38]3 years ago

5 0

So 4x+7=15

Move 15 over so equals 0

4x+7 -15=0

4x-8=0

Move 8 back over

4x=8

Divide

X= 2

Good luck :D

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Fourth term of sequence is 216, sixth term 96

My name is Ann [436]

312 I think, hop[e this helps

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3 years ago

23. The pilot of a small private plane can look forward and see the control tower for a small airstrip.

Alex73 [517]

Answer:

Altitude of the plane is 0.5 miles.

Step-by-step explanation:

From the figure attached,

An airplane A is at height h miles observes a small airstrip at D and a factory at F, 4.8 miles apart from D.

Angle of depressions for the airstrip is 13.1° and the factory is 4.1°.

We have to calculate the airplane's altitude h.

From ΔABF,

tan4.1 = $\frac{AB}{BF}=\frac{h}{(x+4.8)}$

h = 0.07168(x + 4.8) -----(1)

From ΔABD,

tan13.1 = $\frac{h}{x}$

h = 0.2327x -----(2)

From equation (1) and (2),

0.07168(x + 4.8) = 0.2327x

0.2327x - 0.07168x = 4.8×0.07168

0.161x = 0.344

x = $\frac{0.344}{0.161}=2.14$ miles

From equation (2),

h = 0.2327×2.137

h = 0.4972 miles

h ≈ 0.5 miles

Therefore, 0.5 miles is the altitude of the plane.

6 0

3 years ago

HELLPPPPPPPP ASAPPPPPPPP PLEASEEEEE

marin [14]

Answer:

B=fh

Step-by-step explanation:

I think?

Basically divided by b to get h over b and then times by h to get b=fh (you want to be get on its own)

4 0

3 years ago

Read 2 more answers

data set A is {30, 45, 32, 50, 33, 40, 44, 32}. Data set B is {28, 43, 30, 48, 35, 42, 46, 34}. which statement best compares th

3241004551 [841]

Answer:

the mean in set B is equal to the mean in set A (option C)

Question:

The question is incomplete as the answer choices were not given.Let's consider the following question:

Data set A is {30, 45, 32, 50, 33, 40, 44, 32}. Data set B is {28, 43, 30, 48, 35, 42, 46, 34}. which statement best compares the two data sets?

a) median for set A is equal to the median for set B

b) Range for set A is greater than range for set B

c) The mean in set B is equal to the mean in set A

Step by step explanation:

We can describe a data set using four ways:

Center, spread, shape and unusual features.

Let's consider the center and spread.

Center: This is the median of the distribution.

Spread: This is the variation of the data set. If the range is wide, the spread is larger and If the range is small, the spread is smaller.

Rearranging the data set:

A = {30, 32, 32, 33, 40, 44, 45, 50}

B = {28, 30, 34, 35, 42, 43, 46, 48}

From the data:

The median for set A = (33+40)/2 = 73/2= 36.5

The median for set B = (35+42)/2 = 77/2= 38.5

Range = highest value - lowest value

The data ranges from 30 to 50 (range = 20) for A

The data ranges from 28 to 48 (range = 20) for B

Mean for set A = (30+32+32+33+40+4445+50)/8 = 306/8 = 38.25

Mean for set B = (28+30+34+35+42+43+46+48)/8= 306/8 = 38.25

In both data set the mean is equal to 38.25.

Therefore the statement that best compares the two data sets is the mean in set B is equal to the mean in set A (C)

8 0

3 years ago

Determine if the two triangles

BabaBlast [244]

Answer:

Step-by-step explanation:

If the two triangles what?

5 0

3 years ago