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3 years ago

Which of the following values for x and y make the equation 4x + 2y + 3 = 19 true?

2 answers:

8 0

Just substitute for x and y.
1. 4(5) +2(3)+3=19 =
29=19
2. 4(4)+ 2(5)+3=19 =
29=19
3. 4(3) +2(2) +3=19 =
19=19
4. 4(2) + 2(5)+3=19 =
21=19
So the third one is correct :)

telo118 [61]3 years ago

5 0

The third answer is true

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3 years ago

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Answer:

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3 years ago

Suppose an opaque jar contains 3 red marbles and 10 green marbles. The following exercise refers to the experiment of picking tw

kow [346]

Answer:

$\frac{5}{13}$

Step-by-step explanation:

Given,

Red marbles = 3,

Green marbles = 10,

So, the total marbles = 3 + 10 = 13,

$\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}$

Since, here replacement is not allowed,

Thus, the probability of getting a green marble and a red marble

= first red and second green + first green second red

$=\frac{3}{13}\times \frac{10}{12}+\frac{10}{13}\times \frac{3}{12}$

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3 years ago

Name an equivalent ratio for 1/2 with a denominator of 20

Westkost [7]

To begin with, equivalent fractions represent the same part of a whole number. So I need to find a fraction, with a denominator of 20, that is the same value as 1/2:
1/2 = ?/20
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Since the denominator needed to be 20, I multiplied the numerator and the denominator (1/2) by 10 to get 10/20. So, 1/2 and 10/20 are equivalent.

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2 years ago