3 years ago

The sum of 5 and twice a number.

Mathematics

2 answers:

FromTheMoon [43]3 years ago

8 0

Answer:

5 + 2x

Step-by-step explanation:

Sum means your adding so it would be 5 + any given number which you can call x times by 2. Which is 5 + 2x

snow_lady [41]3 years ago

4 0

Answer:

5+x2

Step-by-step explanation:

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This table gives a few (x,y)(x,y)left parenthesis, x, comma, y, right parenthesis pairs of a line in the coordinate plane. -28 -

Serhud [2]

Answer:

The y-intercept is y = 2

Step-by-step explanation:

A linear function has the following format:

$y = mx + b$

In which m is the slope and b is the y-intercept, which is the value of y when x = 0.

We are given these three points:

(-28, -54)

(-21, -40)

(-14, -26)

We use two of them to build a system, to find values for m and b.

(-28, -54)

This means that when $x = -28, y = -54$

$y = mx + b$

$-54 = -28m + b$

$28m = b + 54$

$m = \frac{b + 54}{28}$

(-21, -40)

This means that when $x = -21, y = -40$

$y = mx + b$

$-40 = -21m + b$

$-40 = -21\frac{b + 54}{28} + b$

$-40 = \frac{-21b - 1134 + 28b}{28}$

$7b - 1134 = -40*28$

$7b = 14$

$b = \frac{14}{7}$

$b = 2$

The y-intercept is y = 2

7 0

3 years ago

Given f (x) = 2 (x-1)^2 + 3x -7, evaluate f (0) and f (-3)

aalyn [17]

Answer:

.....................

8 0

3 years ago

Read 2 more answers

Which expression is equivalent to 5(3j+4)?<br> A 4(5j+3)<br> B 3(4j+5)<br> C 4(3j+5)<br> D 5(4+3j)

valkas [14]

D, the answer is the same but in the parenthesis is reversed using the addiction something property

7 0

3 years ago

Solve for ddd. Give an exact answer. 0.5(7d+4)=7-1.5d0.5(7d+4)=7−1.5d0, point, 5, left parenthesis, 7, d, plus, 4, right parenth

MissTica

Answer:

d = 1

Step-by-step explanation:

The equation given is:

0.5(7d + 4) = 7 - 1.5d

Expand the bracket:

3.5d + 2 = 7 - 1.5d

Collect like terms:

3.5d + 1.5d = 7 - 2

5d = 5

d = 5 / 5 = 1

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3 years ago

I need help pleaseee any question answers

MArishka [77]

I wrote it out for you

6 0

3 years ago