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3 years ago

Simplify 4(x + 7).........

Mathematics

1 answer:

a_sh-v [17]3 years ago

6 0

Answer:

4x+28 is the correct answer

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Write two ways to group and add 2+3+4

Tresset [83]

1. 5+4
2. 7+2

The answer is 9.

I hope I helped! :)

5 0

4 years ago

Read 2 more answers

You have 2 different savings accounts. For Account A, the simple interest earned after 21 months is $13.65. For Account B, th

Rama09 [41]

Answer:

Step-by-step explanation:

The formula for simple interest is expressed as

I = PRT/100

Where

P = principal

T = time in years

R = interest rate on the principal.

For account A, the simple interest earned after 21 months is $13.65. The interest rate is 3.9% for Account A

Let y represent the principal for account B. Therefore

P = x

I = $13.65

T = 21/12 = 1.75 years

R = 3.9

Therefore

13.65 = (x × 3.9 × 1.75)/100

1365 = 6.825x

x = 1365/6.825 = $200

For account B, the simple interest earned after 30 months is $40.25. The interest rate is 2.3% for Account B

Let x represent the principal for account A. Therefore

P = y

I = $40.25

T = 30/12 = 2.5 years

R = 2.3

Therefore

40.25 = (y × 2.3 × 2.5)/100

4025 = 5.75y

y = 4025/5.75 = $700

The principal for account A is $200

The principal for account B is $700

For account A, interest earned in the first month is

13.65/21 = $0.65

For account B, interest earned in the first month is

40.25/30= $1.34

Account B earned the most interest in the first month(the same interest is earned every month)

3 0

4 years ago

Given two parallel lines, same side interior angles are supplementary. Fill

Vesna [10]

Vertical angles are equal
Same side exterior angles are supplementary
Alternate side interior angles are equal
Alternate sides exterior angles are equal
Corresponding angles are equal

4 0

2 years ago

PLEASE HELP: p(t)=1.8^t

Karo-lina-s [1.5K]

<h3>Initial amount = 1</h3><h3>Rate of growth = 80 %</h3><h3>The value is 18.9 when t = 5</h3>

<em><u>Solution:</u></em>

<em><u>The given exponential function is:</u></em>

$p(t) = 1.8^t$

<em><u>The exponential function is given as:</u></em>

$y = a(1+r)^t$

Where,

y is the future value

a is the initial value

r is the growth rate

t is the number of years

<em><u>Compare both the functions,</u></em>

a = 1

$1+r = 1.8\\\\r = 1.8 - 1\\\\r = 0.8$

Thus growth rate is:

$r = 0.8 = 0.8 \times 100 \% = 80 \%$ <em><u></u></em>

<em><u>Evaluate the function when t = 5</u></em>

Substitute t = 5 in given

$p(5) = 1.8^5\\\\p(5) = 18.89568 \approx 18.9$

Thus the value is 18.9 when t = 5

3 0

4 years ago

Which of the following values of x satifies the equation 2 x - 4 = 4?*

ElenaW [278]

Answer: x=4

Step-by-step explanation:

add 4 to both sides.

2x= 4+4

simplify 4+4=8

2x=8

divide both sides by 2.

x= 8/2

simplify 8/2 to 4.

x=4

6 0

3 years ago