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ololo11 [35]
2 years ago
14

Which is the best option?

Mathematics
1 answer:
rusak2 [61]2 years ago
6 0

Answer:

A would have to be the best answered all the all ones dont seen right

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Solve to find the values of a and b.<br>4a + 7b = 38<br>9a + 7b = 68​
Nataliya [291]
4a + 7b = 38 -> (1)
9a + 7b = 68 -> (2)

Subtract (1) from (2),
9a - 4a + 7b - 7b = 68 - 38
5a = 30
a = 6
5 0
2 years ago
How to create a pattern with the rule n 3?
SCORPION-xisa [38]
If you copied the "n 3" part, it's very likely that your job was to create a pattern with either the rule n^3 or n*3.

In the case of the former, we can start with the initial number of 1 and increase by 1.
In that way, using the rule n^3 would create this pattern of numbers: 1, 8, 27, 64, and so on. Or stated in another way 1*1*1, 2*2*2, 3*3*3, 4*4*4 ...

In the case of the latter, we can start with the initial number of 1 and increase it by 1. 
In this way, using the rule of n*3 would create this pattern of numbers: 3, 6, 9, 12, 15, 18 and o son. Or stated in another way 1*3, 2*3, 3*3, 4*3, 5*3 ...
5 0
3 years ago
Please help me with this. It makes no sense to me.
lara [203]

Answer:

D

Step-by-step explanation:

<8 and <5 are vertical angles

6 0
2 years ago
FACTOR the following quadratic expression: x^2-3x-18. Clearly show your steps OR explain your reasoning and CHECK your answer by
kakasveta [241]

Answer:

The factors of x² - 3·x - 18, are;

(x - 6), (x + 3)

Step-by-step explanation:

The given quadratic expression is presented as follows;

x² - 3·x - 18

To factorize the given expression, we look for two numbers, which are the constant terms in the factors, such that the sum of the numbers is -3, while the product of the numbers is -18

By examination, we have the numbers -6, and 3, which gives;

-6 + 3 = -3

-6 × 3 = -18

Therefore, we can write;

x² - 3·x - 18 = (x - 6) × (x + 3)

Which gives;

(x - 6) × (x + 3) = x² + 3·x - 6·x - 18 = x² - 3·x - 18

Therefore, the factors of the expression, x² - 3·x - 18, are (x - 6) and (x + 3)

6 0
3 years ago
Jug can type 128 words in 3 minutes. How many minutes will it take him to type 576 words
KATRIN_1 [288]

Answer:

13.5 minutes

Step-by-step explanation:

\frac{3 min }{128 words} = \frac{xmin}{576 words}

Cross multiply

3 × 576 = 128x

3 × 576 = 1,728

1,728 = 128x

1,728 ÷ 128 = x

13.5 = x

8 0
2 years ago
Read 2 more answers
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