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algol [13]
3 years ago
8

Which expression is equivalent to 5(2x+3)-2x?

Mathematics
2 answers:
ollegr [7]3 years ago
6 0
Idk but it is something u might have to divide
IrinaK [193]3 years ago
3 0

Answer:

x= -15/8

Step-by-step explanation:

5(2x+3)-2x = 0

10x+15-2x = 0

8x= -15

x= -15/8

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Physics students drop a ball from the top of a 100 foot high building and model its height as a function time with the equation
pishuonlain [190]

When the ball hits the ground, the height is 0.

0 = 100 - 16t²

0 = (10 - 4t)(10 + 4t)

0 = 10 - 4t     or     0 = 10 + 4t

4t = 10          or       -4t = 10

 t = \frac{10}{4}             or          t = -\frac{10}{4}

Time cannot be negative (unless you have a time machine) so disregard  -\frac{10}{4}

Answer: t = \frac{5}{2} = 2.5 seconds

6 0
2 years ago
A bag contains 6 red tiles, 8 blue tiles, and 6 green tiles. A tile is drawn, the color recorded, and then the tile placed back
tester [92]

Answer:

9 red tiles


Step-by-step explanation:


Total number of tiles: 6+8+6=20

Total number of red tiles: 6


Probability of getting red in one draw:  \frac{6}{20}=0.3

<em>This means that you would expect to get red 0.3  or 30% of the times.</em>

<em>Hence, when you draw tiles 30 times from the bag, you would expect red to be picked 30% of 30 times. This is:</em>

<em>0.3*30=9</em>

So, you would expect to draw a red tile from the bag 9 times.

3 0
3 years ago
8) Which square root is NOT a whole number? A) 121 B) 144 C) 169 D) 184
lyudmila [28]
D
a number times itself don't equals 184
11×11= 121
12×12=144
13×13=169
4 0
3 years ago
Read 2 more answers
Find the tangent of angle Θ in the triangle below.
Rina8888 [55]

Answer: \frac{\sqrt{65}}{4}

Step-by-step explanation:

By the Pythagorean theorem, the unknown side has length

\sqrt{9^{2}-4^{2}}=\sqrt{65}

Therefore,

\tan \theta=\boxed{\frac{\sqrt{65}}{4}}

4 0
2 years ago
Please help me I really need help with this
Kobotan [32]

Answer: B, Each of the sums is 180 degrees.

Step-by-step explanation:

Since a 180 degree angle is always a flat line, and that is the case for this,

Each of the sums is 180 degrees.

6 0
3 years ago
Read 2 more answers
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