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aliina [53]
2 years ago
7

12x² + 9x² = A. 21x²² B. 21x C. 22x² D. 22xA

Mathematics
2 answers:
mel-nik [20]2 years ago
6 0

Answer: A (if it's just a typo)   or   21x^{2}

Step-by-step explanation:

Since it's the same variable and same exponent, you just need to add the whole numbers and put the same variable and exponent.

12 + 9 = 21

21x^{2}

Gnesinka [82]2 years ago
3 0

Answer:

21x²

Step-by-step explanation:

hopefully A is a typo

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this graph shows the amount of rain that falls in a given amount of time. what is the slope of the line and what does it mean in
Galina-37 [17]

Answer:

-5/-2 or 2.5

Step-by-step explanation:

Because you gave two points that I'm guessing are from the graph I think that's the answer. Because when you use the slope formula y2-y1 over x2 - x1 you get -5/-2 or you either get 2.5 meaning that is the slope specifically saying the rate of change. You get 2.5 when you divide -5/-2 incase you need a decimal or want to simplfy it.

4 0
1 year ago
Read 2 more answers
The Freeman family is barbecuing veggie burgers, corn cobs, and mushroom caps in their local park. If 3/8 of the items barbecued
algol [13]

Answer:

7/24

Step-by-step explanation:

Let

total items barbequed = 1

Veggie burgers = 3/8

Corn cobs =1/3

Mushroom caps = x

Veggie burgers + corn cobs + x = 1

3/8 + 1/3 + x = 1

9+8 /24 + x = 1

17/24 + x = 1

x= 1 - 17/24

=24-17 /24

= 7/24

x = 7/24

Fraction of barbequed items that are mushroom's is 7/24

7 0
3 years ago
art supplies in washington DC cost 28 dollars if the sales tax is 6 percent what was the total cost of supplies
vova2212 [387]
(28 : 100) *6 = 1.68 (tax)

28 + 1.68 = 29.68 (total cost)
5 0
3 years ago
What is the area of this figure?
Oksanka [162]
<h3>Answer:  297 square cm</h3>

=============================================

Work Shown:

Break up the figure as shown in the diagram below.

A rectangle and trapezoid form

-------------

Area of rectangle = base*height = 9*15 = 135 cm^2

Area of trapezoid = (1/2)*(b1+b2)*h = (1/2)*(18+9)*12 = 162 cm^2

total area = (area of rectangle)+(area of trapezoid)

total area = (135) + (162)

total area = 297 square cm

3 0
3 years ago
Which of the expressions below are equal to 5x + 20y? Select all that apply.
xeze [42]
The correct answers are A and B.
Hope this helps!
8 0
3 years ago
Read 2 more answers
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