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prisoha [69]
1 year ago
9

Use a table to multiply (-3a2)(a - b).

Mathematics
1 answer:
mote1985 [20]1 year ago
8 0

Answer:

-3a³ + 3ba²

Step-by-step explanation:

1) Distribute

-3a² (a-b)

-3a³ + 3ba²

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3 0
3 years ago
Which of the following nonlinear inequalities is graphed below
Rashid [163]

Answer:

(x²/4) + (y²/16) ≤ 1

Step-by-step explanation:

The general form of the ellipse in the graph is

x²/4 + y²/16 = 1

we want to find the inequality which represents the shaded area this will determine whether which of the following 2 choices are correct

Choice 1: x²/4 + y²/16 ≥ 1

Choice 2: x²/4 + y²/16 ≤ 1

we note that point (0,0) lies inside the shaded area. Which means if we substitute (0,0), it should create an equality that is valid.

try choice 1: 0²/4 + 0²/16  = 0 ≥ 1 (not valid because obviously zero is smaller than 1)  

try choice 1: 0²/4 + 0²/16  = 0 ≤ 1 (this is valid, hence choice 2  is the answer)

4 0
2 years ago
Find tan A. Can someone help me with this one??
marta [7]

Answer:

tan A = 5/12

Step-by-step explanation:

To find tangent of a triangle, it is this ratio : opposite / adjacent.

Knowing that "A" is the given angle, 5 is the opposite and 12 is the side adjacent to "A". Putting these values together, the tangent is

5 (opposite)/12 (adjacent).

Hope this helps!

3 0
2 years ago
John's Mathematics exam mark this year is increased by 5% to 84. Find his Mathematics exam mark
Svet_ta [14]

Answer:

80%

Step-by-step explanation:

Let's call the past exam mark m,

m*105%=84

m*105/100=84

m=84/(105/100)

m=80

Hope this helps!

8 0
3 years ago
Read 2 more answers
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goldfiish [28.3K]
The elephant weighs 9,430 pounds more than the donkey.
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2 years ago
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