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2 years ago

What is the value of the expression below when x = 4 and y = 4? 3x + 7y

Mathematics

2 answers:

Diano4ka-milaya [45]2 years ago

7 0

Answer:

Step-by-step explanation:

3x + 7y

Replace the letters with said numbers,

3(4) + 7(4)

Multiply,

12 + 28

And add!

Delvig [45]2 years ago

7 0

Answer:

3(4)+7(4)=40

Step-by-step explanation:

x=4

y=4

3x + 7y

3(4)+7(4)

3x4=12

7x4=28

12+28=40

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Tobias sent a chain letter to his friends, asking them to forward the letter to more friends. The number of people who receive t

malfutka [58]

Answer:

$P(t)=37\times (4)^{(t/9.1)}$

Explanation:

The number of emails is multiplied by 4 every 9.1 weeks.

Thus, since Tobias initially sent the chain letter to 37 friends, the number of letters will grow as per this geometric series:

Start: 37 letters

In 9.1 weeks: 37 × 4

In 2 × 9.1 weeks: 37 × (4)²

In 3 × 9.1 weeks: 37 × (4)³

As you see, the exponent is the number of weeks divided by 9.1

Thus, if your variable is the number of weeks, t, then the exponent is t/9.1

And the exponential function, P(t) will be:

$P(t)=37\times (4)^{(t/9.1)}$

3 0

3 years ago

Write the standard form of the line with the given information. Include your work in your final answer. Type your answer in the

AURORKA [14]

Answer:

The standard form of line is

$-3x+y=-2$

Step-by-step explanation:

we are given a line

slope=3

so,

$m=3$

y-intercept of -2

so,

$b=-2$

now, we can use slope-intercept form of line

$y=mx+b$

now, we can plug values

$y=3x-2$

we can write it in standard form of line

$ax+by=c$

$y=3x-2$

we can subtract both sides by 3x

$y-3x=3x-2-3x$

$y-3x=-2$

$-3x+y=-2$

So, the standard form of line is

$-3x+y=-2$

3 0

3 years ago

Read 2 more answers

28.) Find the slope of the line that passes through the pair of points.

DerKrebs [107]

Answer:

the d is right one look this img

4 0

3 years ago

If a square has a side length of 5cm what would the area be

EastWind [94]

Answer:

25 cm squared

Step-by-step explanation:

To find area we multiply the side lengths

5cm x 5cm=25 cm squared

3 0

3 years ago

Someone please help!

umka21 [38]

Im not sure, when in doubt pick C

3 0

2 years ago