3 years ago

15x + 6 - 7x - 8 can someone help me with this

Mathematics

1 answer:

Anarel [89]3 years ago

8 0

Answer:

8x-2

Step-by-step explanation:

combine like terms

15x-7x= 8x

6-8= -2

You might be interested in

Tina recorded the number of calories she burned during a bike ride. The graph shows Tina’s calories burned, y, after x hours. If

m_a_m_a [10]

Answer:

hgo87ii76r7687ro

Step-by-step explanation:

8 0

3 years ago

A gas station stores its gasoline in a tank under the ground. The tank is a cylinder lying horizontally on its side. (In other w

hoa [83]

Answer:

64,717.36 Joule is the total amount of work needed to pump the gasoline out of the tank.

Step-by-step explanation:

Volume of cylinder = V

Radius of cylinder = r = 0.5 m

Height of the cylinder = 5 m

Volume of cylinder = $\pi r^2h$

$V=3.14\times (0.5 m)^2\times 5 =3.925 m^3$

Mass of gasoline = m

Density of gasoline = d = $673 kg/m^3$

$m=d\times V=673 kg/m^3\times 3.925 m^3=2,641.525 kg$

Work done to pump the gasoline out of the tank W

Acceleration due to gravity = g $.8 m/s^2$

The center of gravity of fuel in fully filled tank will be centre so, the value of h = 2 m + 0.5 m = 2.5 m

$W =m\times g\times h$

$W=2,641.525 kg\times 9.8 m/s^2\times 2.5 m=64,717.36 J$

64,717.36 Joule is the total amount of work needed to pump the gasoline out of the tank.

6 0

3 years ago

How else can the ratio 4/5 be written

Musya8 [376]

4 to 5, or 4.5. I hoped I helped!!

-Dawn

3 0

3 years ago

Read 2 more answers

Factor:

Naddik [55]

Answer:

D) (5x - 3) (25x^2+ 15x + 9)

Step-by-step explanation:

$125 {x}^{3} - 27 \\ \\ = ( {5x)}^{3} - {(3)}^{3} \\ \\ = (5x - 3) \{(5x) ^{2} + 5x \times 3 + ( {3})^{2} \}\\ \\ = (5x - 3) \{25 {x}^{2} + 15x + 9\}$

3 0

3 years ago

V= <img src="https://tex.z-dn.net/?f=v%3D%20%5Cpi%20r%20%5E%7B2%7D%20h%20%20for%20%20%202%20" id="TexFormula1" title="v= \pi r ^

swat32

$V=\pi r^2h \\\\ r^2=\frac{V}{\pi h} \\\\ \boxed{r=\sqrt\frac{V}{\pi h}}$

3 0

4 years ago