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shtirl [24]
1 year ago
13

An investor bought 3 shares of stock A and 2 shares of stock B for a total of

Mathematics
1 answer:
irga5000 [103]1 year ago
8 0

Step-by-step explanation:

3a+2b=41

(3a+$2)+2b=41

3(7+2)=41-2(7)

3×9=41-14

27=27

a=9

b=7

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Richie and Phoebe are saving money to buy a new tv. They need at least $510 to purchase the new TV. Phoebe weeds yards and Richi
den301095 [7]

Answer:

  • 12x +9y ≥ 510
  • y ≤ 2x
  • y ≥ 25

Step-by-step explanation:

Phoebe earns 12x for her yard weeding, and Richie earns 9y for his dog walking. They want the sum of these earnings to be at least 510, so the first constraint inequality is ...

  12x +9y ≥ 510

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Richie plans to walk no more than 2x dogs, since y is the number of dogs he walks, the second constraint is ...

  y ≤ 2x

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Richie will walk at least 25 dogs, so ...

  y ≥ 25

6 0
3 years ago
Read 2 more answers
How to graph y=2x-4 x+3y=9
NikAS [45]
  • Answer:

Step-by-step explanation:

  • The point form: (3,2)
  • You solve for X
  • You solve for y
  • On the Y-axis where the 2 is you go 3 to the right and put your point right there above the 3.
  • There you have your answer on the graph.
4 0
2 years ago
Write an algebraic equation for this tape diagram. Then determine the value of x. You may use a calculator.
tresset_1 [31]

Answer:

3× + 16 = 22.75

3× = 22.75 - 16

<u>3x</u><u> </u>= <u>6</u><u>.</u><u>75</u>

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>3 3

x = 2.25

7 0
2 years ago
Given the function f(x) = 3x + 1, what is the value of f(-2/3)? <br><br>show work <br>​
Marta_Voda [28]

Answer:

f(-2/3) = -1

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x + 1

f(-2/3) is x = -2/3

<u>Step 2: Evaluate</u>

  1. Substitute:                    f(-2/3) = 3(-2/3) + 1
  2. Multiply:                        f(-2/3) = -2 + 1
  3. Add:                              f(-2/3) = -1
7 0
3 years ago
Assume Cylinder A and Cone B are the same height and the bases have the same radius. If A has a volume of 18π cm3, what is the v
disa [49]

Answer:

Option A  V_B=19\ cm^3

Step-by-step explanation:

The volume of a cone is:

V_B = \pi\frac{hr ^ 2}{3}

The volume of a cylinder is:

V_A = \pi(r ^ 2)h

Both figures have the same height h and the same radius r.

The volume of the cylinderV_A = 18\pi\ cm ^ 3

We want to find the volume of the cone.

Then, we find r and h:

V_A = 18\pi = \pi(r ^ 2)h

We simplify.

V_A = 18 = (r ^ 2)h

Then the product of (r ^ 2)h = 18.

We substitute this in the cone formula and get:

V_B =\frac{\pi}{3}(18)\\\\V_B = \frac{18}{3}\pi\\\\V_B=19\ cm^3

8 0
3 years ago
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