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Sunny_sXe [5.5K]

3 years ago

5

What is the value of x in the equation 4 and StartFraction 3 Over 10 EndFraction minus (2 and two-fifths x + 5 and one-half) = o

ne-half (negative 3 and three-fifths x + 1 and one-fifth)?

1 answer:

musickatia [10]3 years ago

3 0

Answer:

5

Step-by-step explanation:

Edge i think dont quote me on this plz

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The inequality x S-8 would represent which of the following values?

irinina [24]

S refers to side so it’s 64 = 8x8

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3 years ago

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Like bought 15 boos six books each cost $7 four of the books each cost $5 the rest of the books each cost $3 how many do all the

Gekata [30.6K]

Answer:

The total combined cost of 15 books is $77.

Step-by-step explanation:

Here, the total number of books purchased = 15

The cost of books = $7 for 6 books

So, the cost of six books = 6 x ( cost of 1 book) = 6 x ($7) = $42

⇒Out of 15 books, the cost of 6 books = $42 .... (1)

The cost of books = $5 for 4 books

So, the cost offour books = 4 x ( cost of 1 book) = 4 x ($5) = $20

⇒Out of 15 books, the cost of 4 books = $20 .... (2)

Now, the left books are at cost $3 each book.

The number of left books = 15 - ( 6+4) = 15 - 10 = 5

So, the cost of books = $3 for 5 books

So, the cost of five books = 5 x ( cost of 1 book) = 5 x ($3) = $15

⇒Out of 15 books, the cost of 5 books = $15 .... (3)

Now, to get the total price of 15 books add (1) + (2) + (3), we get:

$42 + $20 + $15 = $77

Hence, the total combined cost of 15 books is $77.

8 0

3 years ago

What is 68 percent into a fraction

Marysya12 [62]

Answer:

68/100

Step-by-step explanation:

There is not much that can be done to figure out how to write .68 as a fraction, except to literally use what the decimal portion of your number, the .68, means. Since there are 2 digits in 68, the very last digit is the "100th" decimal place. So we can just say that .68 is the same as 68/100.

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3 years ago

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The angles 46 degrees and 44 degrees are complementary. True or False

cupoosta [38]

1. Complementary angles are angles whose measures add up to 90°.
46° + 44° = 90°, so the angles are complementary. <em>true

</em>2. sin(x) = cos(90-x). Here's why:
<em />Sine = opposite/hypotenuse
Cosine = adjacent/hypotenuse
The side opposite one angle is the same as the side adjacent to the opposite angle.
Therefore sin(angle) = cos(opposite angle)
These can be expressed as (x) and (90-x), as we will explore in question #3.
Anyways, sin(60°) = cos(90-60°) = cos(30°), so this is <em>true
</em>
3. If we have a right triangle, it must have one right angle measuring 90°.
The angles of a triangle add up to 180°.
The other two angles' measures must add up to 90° because of this. <em>true</em><em />

4. <em>true</em><em>
</em>Use the two sides to find the third (Pythagorean theorem)
<em />Use the Law of Cosines to find each angle.

5. <em>false</em>
We need a side to know how large the triangle is going to be.
This is why triangles that share two angles are similar but not necessarily congruent.

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3 years ago

tina wants to save money for school. tina invests $400 in an account that pays an interest rate of 4%. how many years will it ta

kondaur [170]

Answer: 28.43 years

<u>Step-by-step explanation:</u>

$A = P(1 + r)^t\quad \text{where}$

A is the amount accrued
P is the principal (initial) amount invested
r is the interest rate (in decimal form)
t is the time (in years)

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