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3 years ago

Please help and simplify these expressions and show how u found them! i will mark brainliest !

Mathematics

2 answers:

dem82 [27]3 years ago

7 0

Answer:

3) 3k+20

4) 4+2d

Step-by-step explanation:

You first have to distribute by multiplying the number next to the expression in the parenthesis. Then you combine like terms.

3) 5(k+4)-2k

Step 1: (5×k= 5k) (5×4=20) equation is now 5k+20-2k

Step 2: 5k-2k=3k since they both have the same variable you combine like terms. Equation is now 3k+20 (Final answer)

4) 2(3+d-1)

Step 1: (2×3=6) (2×d=2d) (2×[-1]=2) Equation is now 6+2d-1.

Step 2: (6-2=4) Since both 6 and 1 don't have any variable their like terms and you combine them. Equation is now 4+2d (Final answer)

Diano4ka-milaya [45]3 years ago

6 0

5(k+4)-2k
Multiply the k and the 4 by 5
Now you have 5k+20-2k
Minus 2k from 5k
Now you have 3k+ 20 that’s the answer

2(3+d-1)
Multiply 3, d, and 1 by 2
Now you have 6+2d-2
Minus 2 from 6
Now you have 4+2d that’s the answe

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You sell 500 shares of Arena Pharmaceuticals (ARNA) at $3.15 . You purchased the stock at $1.28. How much profit did you make?

denis23 [38]

Answer:

Profit = 935

Step-by-step explanation:

Purchase price: 500×1.28=640

Selling price: 500×3.15=1575

Profit: selling price - purchase price = profit

1575 - 640 = 935

Profit = 935

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3 years ago

Find the value of m. (-3/4)-⁴×(-3/4)-¹¹ = (-3/4)^m

tatiyna

Answer:

m = - 15

Step-by-step explanation:

Using the rule of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$ , then

$(-\frac{3}{4}) ^{-4}$ × $(-\frac{3}{4}) ^{-11}$ = $(-\frac{3}{4}) ^{m}$ , that is

$(-\frac{3}{4}) ^{(-4-11)}$ = $(-\frac{3}{4}) ^{m}$

$(-\frac{3}{4}) ^{-15}$ = $(-\frac{3}{4}) ^{m}$

Equating exponents gives

m = - 15

4 0

2 years ago

Football team play $28 per jersey. They bought 16 jerseys. How much money did the team spend on jerseys

yaroslaw [1]

If they pay $28 for 16 jerseys then the total they’d have to play is $448

28 x 16 = 448

Hope this helps :)

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3 years ago

Is 6-6 and 1-6 equal

uranmaximum [27]

Answer:

Step-by-step explanation:

6-6=0

1-6=-5

7 0

3 years ago

No links or wrong answers please!! 55 points

juin [17]

The areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)

<h3>How to determine the total areas?</h3>

<u>The figure 1</u>

In this figure, we have

Length = x + 1

Width = 4

The area is calculated as:

Area = Length * Width

So, we have

Area = 4(x + 1)

<u>The figure 2</u>

In this figure, we have

Length = d + 4

Width = 7

The area is calculated as:

Area = Length * Width

So, we have

Area = 7(d + 4)

<u>The figure 3</u>

In this figure, we have

Length = y + 3

Width = y

The area is calculated as:

Area = Length * Width

So, we have

Area = y(y + 3)

Hence, the areas of the figures are 4(x + 1), 7(d + 4) and y(y + 3)