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3 years ago

10

Which graph matches the equation y=2/3x-4

1 answer:

wel3 years ago

4 0

Answer:b

Step-by-step explanation:

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joanne bought 3 baseball cards for $160. if the first card was as expensive as the combined price of the second and the third ca

BARSIC [14]

Let the price of the 3rd card be c. Now we can write the equation:
c + (c + 20) + (c + c + 20) = 160 .........(1)
Simplifying the left hand side of equation (1), we get:
4c + 40 = 160 .........(2)
Subtracting 40 from both sides of equation (2) gives:
4c = 120
from which c = $30.
Therefore the price of the second card = 30 + 20 = $50
and the price of the first card = 30 + 50 = $80.

4 0

4 years ago

F(x) =2x+1 and g(x) =x^2-7 find (f+g)(x)

GaryK [48]

$f(x) = 2x + 1 \ \ and \ \ g(x) = {x}^{2} - 7$

$(f \ \ + \ \ g)(x) = f(x) + g(x)$

$(f \ \ + \ \ g)(x) = 2x + 1 + {x}^{2} - 7$

$\boxed{(f \ \ + \ \ g)(x) = {x}^{2} + 2x - 6}$

4 0

4 years ago

The equatorial diameter of a model of earth is 25.6 cm. What is the total surface area of the model

Arisa [49]

Answer:

$2059.7\,\,cm^2$

Step-by-step explanation:

Diameter of a model of earth (D) = 25.6 cm

Radius of a model of earth (r) = $\frac{D}{2}=\frac{25.6}{2}=12.8\,\,cm$

Earth has the shape of a sphere.

Total surface area of a sphere = $4\pi r^2$

Put $\pi=\frac{22}{7}\,,\,r=12.8\,\,cm$

So,

Total surface area of the model $=4(\frac{22}{7})(12.8)^2=2059.7\,\,cm^2$

7 0

3 years ago

Apply the distributive property:<br> -3(x+2) =

vfiekz [6]

Hello skm413002!

$\huge \boxed{\mathfrak{Question} \downarrow}$

Apply the distributive property:

-3(x+2) =

$\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}$

By applying the distributive property, we can solve it as....

$\sf \: - 3(x + 2) \\ = \sf \: (- 3 \times x) -( 3 \times 2) \\ = \large \boxed{\boxed{ \bf - 3x - 6}}$

<h3><u>Method</u><u> </u><u>:</u><u>-</u></h3>

Distributive property.

<h3><u>Steps </u><u>:</u><u>-</u></h3>

Multiply -3 with x & 2.
Add the 2 products.
You'll get the answer as <u>-3x </u><u>-</u><u> </u><u>6</u><u>.</u>

__________________

Hope it'll help you!

ℓu¢αzz ッ

8 0

3 years ago

Read 2 more answers

The surface area of a cylinder

Kruka [31]

What are you asking, exactly?

To find the surface area of a cylinder, the formula is:
2 $\pi$ rh + 2 $\pi$ $r^{2}$

8 0

3 years ago