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3 years ago

A 50 milliliter solution contains 4 milliliters of salt.

Mathematics

1 answer:

vlada-n [284]3 years ago

7 0

Answer:

29 ml of salt

Step-by-step explanation:

50 ml = 4 ml of salt

75 ml =?

If 50 ml is 4 ml of salt, and 75 ml is 25 ml more than 50 ml, just add 25 ml to the 4 ml of salt to get 29ml.

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<img src="https://tex.z-dn.net/?f=%284%20%2B%206i%29%20%7B%7D%5E%7B2%7D%20" id="TexFormula1" title="(4 + 6i) {}^{2} " alt="(4 +

34kurt

Answer:

$36i^{2}+48i+16$

Step-by-step explanation:

$(4+6i)^{2}$ is essentially $(4+6i)(4+6i)$ (you are squaring $(4+6i)$ , so multiplying it by itself), so to simplify, you would need to distribute.

A good way to go about this is using the F.O.I.L. method, multiplying the First numbers in the parentheses, then the Outers, then Inners, and finally, Lasts.

$(4+6i)(4+6i)$ >> $(4+6i)(4+6i)$ >> $(4+6i)(4+6i)$ >> $(4+6i)(4+6i)$

( $(4*4)+(4*6i)+(6i*4)(6i*6i)$ )

After doing so, you would end up with $16+24i+24i+36i^{2}$ , and after combining like terms, $16+48i+36i^{2}$ .

To write the expression in standard form, though, just order the terms from highest to lowest power!

5 0

3 years ago

If a+2b/a-b =2/3 then b/a=?

Dominik [7]

Answer:

$\frac{b}{a}$ = - $\frac{1}{8}$

Step-by-step explanation:

Given

$\frac{a+2b}{a-b}$ = $\frac{2}{3}$ ( cross- multiply )

2(a - b) = 3(a + 2b) ← distribute parenthesis on both sides )

2a - 2b = 3a + 6b ( subtract 3a from both sides )

- a - 2b = 6b ( add 2b to both sides )

- a = 8b ( divide both sides by 8 )

- $\frac{1}{8}$ a = b ( divide both sides by a )

- $\frac{1}{8}$ = $\frac{b}{a}$

6 0

3 years ago

Read 2 more answers

Jacob and 6 of his friends went out to eat. They decided to split the bill evenly. Each person paid $14.93. What was the total b

jasenka [17]

Answer:

$104.51

Step-by-step explanation:

No.of people = 7

How much each person paid = $14.93

How much is the total bill = $14.93 x 7

= $104.51

<em>I was bored so I added the steps lol</em>

8 0

3 years ago

Read 2 more answers

Add: 8p + (-6p6 + 5)

Alika [10]

Answer:

$-6p^6 +8p + 5$

Step-by-step explanation:

$8p + -6p^6 + 5$

$-6p^6 +8p + 5$

6 0

3 years ago

Read 2 more answers

There is a tall tree in ivas backyard. She thinks it might hit her house if it fell over. She measures that the base of the tree

GrogVix [38]

Answer:

The height of the tree is Greater than 50 feet, so Iva’s house is not safe

Step-by-step explanation:

Find the height of the tree

Let

h ----> the height of the tree

we know that

The tangent of angle of 50 degrees is equal to divide the opposite side to the angle of 50 degrees (height of the tree) by the adjacent side to the angle of 50 degrees (tree’s distance from the house)

tan(50°)=h/50

h=(50)tan(50°)=59.6 ft

therefore

The height of the tree is Greater than 50 feet, so Iva’s house is not safe

7 0

3 years ago