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Zepler [3.9K]
3 years ago
5

Evaluate when x = 3, y = -3 and z = -2: xy + 2z

Mathematics
2 answers:
Zepler [3.9K]3 years ago
8 0
(3 x -3) + (2 x -2)
-9 - 4 = -13

wel3 years ago
4 0

Answer:

3*-3+2*-2=

Step-by-step explanation:

-13

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1/4 pound of green grapes and 2/3 pound of red grapes She ate 1/2 pound of the grapes . What is the amount of grapes Natasha has
JulijaS [17]

Answer:

5/12 left

Step-by-step explanation:

1- you need to take 1/4 and 2/3 and find a common denominator, to find the exact amount of pounds.

2- Once you have 3/12 and 8/12, add them to get 11/12.

3-Now you know you don't have a full pound. Then subtract 1/2 from 11/12 ->

11/12 - 6/12 = 5/12

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3 years ago
Patty has 20$ to spend on gifts for her friends.her mother gives her 5$ more .if each gift costs 5$ , how many gifts can she buy
nevsk [136]
She can buy 5 gifts 
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7 0
3 years ago
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[someone help] The speed of the object 7 seconds after it is dropped is ___m/sec
nadezda [96]

9514 1404 393

Answer:

  68.6 m/s

Step-by-step explanation:

The speed at a given time is the derivative of the height at that time.

  dh/dt = -9.8t

At t=7, the speed is ...

  -9.8(7) = -68.6 . . . . . meters per second (downward)

The speed is 68.6 meters per second.

_____

<em>Additional comment</em>

Height is considered to be positive in the up direction, so velocity and acceleration are also positive in the up direction. The derivative of height will be the velocity. Its negative sign in this case indicates the object is moving in the downward direction. The speed is the magnitude (absolute value) of the velocity.

3 0
3 years ago
The pyramid below has a square base.
zavuch27 [327]

The volume of the pyramid would be 2406.16 cubic cm.

<h3>How to find the volume of a square-based right pyramid?</h3>

Supposing that:

The length of the sides of the square base of the pyramid has = b units

The height of the considered square-based pyramid = h units,

The pyramid below has a square base.

h = 24.4 cm

b = 17.2 cm

Then, its volume is given by:

V = \dfrac{1}{3} \times b^2 \times h \: \rm unit^3

V = \dfrac{1}{3} \times 17.2^2 \times 24.4 \: \rm unit^3\\\\V = 2406.16

Therefore, the volume of the pyramid would be 2406.16 cubic cm.

Learn more about pyramid;

brainly.com/question/20324485

#SPJ1

3 0
2 years ago
(HELP) The point (- 8, - 2) is on the parent graph below. Where will it be on the transformed graph?
olga2289 [7]

Answer:

   x=\frac{y2 }{9}

Step-by-step explanation:

2nd step: 3\sqrt{x}=y

third step: \frac{3\sqrt{x} }{3} = \frac{y}{3}

fourth step: \sqrt{x} =\frac{y}{3}

answer:    x=\frac{y2 }{9}

4 0
3 years ago
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