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3 years ago

20 POINTS PLEASE HELP ME!!!

Mathematics

1 answer:

Minchanka [31]3 years ago

5 0

Answer:

p = -1

x=10

m < 7

Step-by-step explanation:

4(3p + 6 ) = 12

Distribute the 4

12p +24 = 12

Subtract 24 from each side

12p+24-24 = 12-24

12p = -12

Divide by 12

12p/12 = -12/12

p = -1

-5(x -4) = -30

Distribute the -5

-5x+20 = -30

Subtract 20 from each side

-5x+20-20 = -30-20

-5x=-50

Divide by -5

-5x/-5 = -50/-5

x=10

-3m + 15 > -6

Subtract 15 from each side

-3m + 15-15 > -6-15

-3m >-21

Divide by -3 remember to flip the inequality

-3m/-3 < -21/-3

m < 7

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3 years ago

QUESTION 18

masha68 [24]

Answer:

y = 0.64w + 12.60

Step-by-step explanation:

<u>This is a linear relationship y= mx + b and:</u>

The y-intercept is b = 12.60
The slope is m = 0.64

<u>The monthly total is:</u>

y = 0.64w + 12.60

5 0

3 years ago

You know 4−3i is the complex conjugate of 4+3i. If you multiply the denominator of −2+5i4+3i by 4−3i, what will you get? Enter y

Alona [7]

Answer:

Step-by-step explanation:

Given

(-2 + 5i)/(4 + 3i)

Required

Multiply the denominator by 4 - 3i

The denominator of the fraction above is 4 + 3i

When multiplied by 4 - 3i, the result is as follows;.

Result = (4 + 3i)(4 - 3i)

Expand

Result = 4(4 - 3i) + 3i(4 - 3i)

Open both brackets (take it one at a time)

Result = 4 * 4 - 4 * 3i + 3i(4 - 3i)

Result = 16 - 12i + 3i(4 - 3i)

Open the second bracket

Result = 16 - 12i + 12i - 3i * 3i

Result = 16 - 12i + 12i - 9i²

In complex numbers, i = √-1

i² = (√-1)²

i² = √-1 * √-1

i² = -1

The expression

Result = 16 - 12i + 12i - 9i²

Becomes

Result = 16 - 12i + 12i - 9(-1)

Result = 16 - 12i + 12i + 9

Collect like terms

Result = 16 + 9 + 12i - 12i

Result = 25 + 0

Result = 25

Hence, when the denominator of the fraction is multiplied by 4 - 3i, the result is 25

3 0

3 years ago

Make V the subject of the formula E=mv2/2

Dima020 [189]

Answer:

v = ± $\sqrt{\frac{2E}{m} }$

Step-by-step explanation:

Given

E = $\frac{mv^2}{2}$ ( multiply both sides by 2 to clear the fraction )

2E = mv² ( divide both sides by m )

$\frac{2E}{m}$ = v² ( take the square root of both sides )

v = ± $\sqrt{\frac{2E}{m} }$

5 0

4 years ago

Write the additive inverse of 11/221

KATRIN_1 [288]

<h2>ANSWER</h2>

addective inverse of 11/221 = -11/221

-<em>secret_angel</em>-

7 0

2 years ago