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2 years ago

This would really be appreciated!

Mathematics

2 answers:

pychu [463]2 years ago

8 0

The answer is B I think, hope this helps!

Flura [38]2 years ago

6 0

Answer:

Its upside down how do we choose i think its b

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A new mixture of self-tanning & moisturizing lotions for everyday use is being developed. This mixture is made by mixing 70

777dan777 [17]

Answer:

450 ounces

Step-by-step explanation:

We know that the cost of the mixture $C_m$ must be the cost of the everyday moisturizing lotion $C_e$ plus the cost of the self-tanning lotion $C_s$ , which means $C_m=C_e+C_s$ .

The cost of any substance will be the cost per ounce of the substance (c), multiplied by the number of ounces (n), which means C=nc, so we have from the previous formula that we have:

$n_m c_m=n_e c_e + n_s c_s$

But we also know that the number of ounces of the mixture must be the sum of the number of ounces of the everyday moisturizing lotion with the number of ounces of the self-tanning lotion, so we have

$n_e c_e + n_s c_s=n_m c_m=(n_e+n_s) c_m=n_e c_m+n_s c_m$

We want to calculate the number of ounces of the self-tanning lotion ( $n_s$ ), so we solve for that variable:

$n_e c_e + n_s c_s=n_e c_m+n_s c_m$

$n_s c_s-n_s c_m=n_e c_m-n_e c_e$

$n_s (c_s-c_m)=n_e(c_m-c_e)$

$n_s=\frac{n_e (c_m-c_e)}{(c_s-c_m)}$

And substitute our values in this formula, to get:

$n_s=\frac{(700\ ounces) (\$1.6-\$0.7)}{(\$3-\$1.6)}=450\ ounces$

7 0

3 years ago

in science class 2/3 of the students have a sister. Of the students who have a sister 1/2 have a brother which model shows the f

faust18 [17]

Answer:

1/3

Step-by-step explanation:

4 0

2 years ago

I really need someone's help!

Lyrx [107]

$We \: have \: an \: inequality: 2(2w + 7 + w + 5) \geqslant 72\\ \Leftrightarrow 3w + 12 \geqslant 36\Leftrightarrow 3w \geqslant 24\Leftrightarrow w \geqslant 8$

5 0

2 years ago

What is 2 -2<br> in 6th grade

Bezzdna [24]

Howdy! My name is Christian and I’ll try and help you with this question!

Date: 9/28/20 Time: 8:38 pm CST

Answer:

Explanation:

2 -2 = 0 :D

Hope this helps you with your question!

<em>Sincerely, </em>

<em>Christian </em>

<em />

3 0

2 years ago

Select True or False for each statement.

mote1985 [20]

<h2>Answer:</h2>

For a real number a, a + 0 = a. TRUE

For a real number a, a + (-a) = 1. FALSE

For a real numbers a and b, | a - b | = | b - a |. TRUE

For real numbers a, b, and c, a + (b ∙ c) = (a + b)(a + c). FALSE

For rational numbers a and b when b ≠ 0, is always a rational number. TRUE

<h2>Explanation:</h2>

<u>For a real number a, a + 0 = a. </u><u>TRUE</u>

This comes from the identity property for addition that tells us that<em> zero added to any number is the number itself. </em>So the number in this case is $a$ , so it is true that: