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3 years ago

Combine the like terms to an equivalent expression 4q+3+2q-1=

Mathematics

2 answers:

morpeh [17]3 years ago

8 0

Answer:

6q +2

Step-by-step explanation:

4q+3+2q-1

Combine like terms

4q+2q + 3-1

6q +2

KIM [24]3 years ago

3 0

Answer:

4q+3+2q−1

The like terms are 4q & 2q as well as 3 & -1

Add them together: 4q + 2q = 6q

And: 3 + (-1) = 2

The simplified expression is 6q+2

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Which of the following shows no correlation between the independent and dependent variables?

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D doesn’t show a positive or negative correlation. D is the best answer choice.

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3 years ago

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Suppose a politician sent out 860 surveys. Which of these numbers of

sladkih [1.3K]

Answer:

860

Step-by-step explanation:

A non-response bias would mean that there are some non-response surveys, which will create a bias in the survey results. Because the survey didn't include information from those who are not responded.

If there will be 860 surveys back, this would prevent non-response bias

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2 years ago

Write the pair of fractions as a pair of fractions with a common denominator

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2 years ago

Use the distributive property to write an expression that is equivalent to 9(c+5).

shepuryov [24]

Answer:

9c + 45

Step-by-step explanation:

The distributive property also known as distributive law of multiplication and division.

In the given expression, distributive law of multiplication is applied where we can multiply first before addition.

Given

9(c+5)

Using distributive property

9(c+5)

= (9 × c) + (9 × 5)

= 9c + 45

9(c+5) = 9c + 45

3 0

2 years ago

Suppose it takes 4 hours for a certain strain of bacteria to reproduce by dividing in half. If 70 bacteria are present to begin

Sauron [17]

Answer:

1 day: 4480

2 days: 8960

3 days: 13440

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$ ---- function inverse

Step-by-step explanation:

Given

$f(x) = 70 \cdot 64x$

Solving (a): The amount present after 1 day.

Here, $x =1$

So:

$f(1) = 70 \cdot 64*1= 4480$

Solving (b): The amount present after 2 days.

Here, $x =2$

So:

$f(2) = 70 \cdot 64*2= 8960$

Solving (c): The amount present after 3 days.

Here, $x = 3$

So:

$f(3) = 70 \cdot 64*2= 13440$

Solving (d): The inverse function of:

$f(x)= 4x^2 + 4$

Replace f(x) with y

$y= 4x^2 + 4$

Swap x and y

$x= 4y^2 + 4$

Rewrite as:

$4y^2 = x -4$

Divide by 4

$y^2 = \frac{x -4}{4}$

Take square roots

$y = \sqrt{\frac{x -4}{4}}$

Replace y with function inverse

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$

6 0

2 years ago