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3 years ago

Which equation represents the relationship "3 more than a number is 7"

Mathematics

2 answers:

Reika [66]3 years ago

7 0

3+x=7Becayse you get the three and add it to a variable equals 7

tatuchka [14]3 years ago

5 0

X+3=7
Which 7-3 would be 4

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A number of squares are connected in a row to form a rectangle. The table shows the relationship between the number of squares,

svp [43]

Answer:

✅The table can be represented by the equation, $y = 4x + 4$

✅The relation is a function.

✅The graph of the function is linear.

Step-by-step explanation:

✍️The first statement: The table can be represented by the equation, $y = 4x + 4$ .

To check if the first statement is correct let's find the equation that can represent the table by finding the slope (m) and y-intercept (b).

Using two pairs, (1, 8) and (2, 12),

Slope = $\frac{y_2 - y_1}{x_2 - x_1} = \frac{12 - 8}{2 - 1} = \frac{4}{1} = 4$ .

Substitute, x = 1, y = 8, and m = 4 into y = mx + b to solve for b.

Thus:

8 = (4)(1) + b

8 = 4 + b

Subtract 4 from each side

8 - 4 = b

4 = b

Plug in the values of b and m into y = mx + b.

Thus, the equation that represents the table would be:

$y = 4x + 4$ .

✅Therefore, the first statement is correct.

✍️The second statement: The graph of the function is non-linear.

This is NOT TRUE because the equation of the function, $y = 4x + 4$ , represents the equation of a linear graph in the slope-intercept form. When graphed, it will give us a straight line.

✍️The Third statement: The relation is a function.

This is TRUE because each input value (x-value) has exactly one output value (y-value).

✍️The Fourth statement: The rate of change is NOT constant.

This standby is NOT TRUE.

The rate of change is the slope (m) that we have calculated above to be 4. Between any two pairs, the rate of change remains 4.

Therefore, this statement is not correct.

✍️The Fifth statement: The graph of the function is linear.

This is TRUE. As stated earlier, from the equation generated, it is safe to say that the equation represents graph of a linear function. The graph will be a straight line graph.

5 0

3 years ago

28 elementary schools to 16 middle school

insens350 [35]

Answer:

$\frac{7}{4}$

Step-by-step explanation:

Here is the complete question: 28 elementary schools to 16 middle schools, write the ratio in simplest form.

Given ratio= elementary schools: middle schools:: 28:16

The ratio can be written as $\frac{28}{16}$

Now to write $\frac{28}{16}$ into simplest form, we need to divide both numerator and denominator by 4.

∴ elementary schools: middle schools= $\frac{\frac{28}{4} }{\frac{16}{4} }$

Hence, we get simplest ratio of elementary schools to middle schools= $\frac{7}{4}$

4 0

3 years ago

What is the solution to the system of equations represented by the two equations?

FinnZ [79.3K]

Make the two equations equal together and solve for x
(x/3) = -2x+7
multiple both sides by 3
x=-6x+21
solve for x
7x=21
x=3.
now plug in 3 into one of the equation to find your y value.
y=-2(3)+7
y=1
write your answer as a coordinate; (3,1)

4 0

4 years ago

Solve asap I'll mark brainliest

diamong [38]

Answer:

s = 4/21

Step-by-step explanation:

Move all terms not containing s to the right side of the equation, then solve.

5 0

3 years ago

Read 2 more answers

If 3 Superscript 2 x + 1 Baseline = 3 Superscript x + 5, what is the value of x? 2 3 4 6

leonid [27]

Answer:

x = 4

Step-by-step explanation:

3^(2x+1) = 3^(x+5) - since they have the same bases, set the exponents equal to each other

2x+1 = x+5

x = 4

6 0

3 years ago

Read 2 more answers