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motikmotik
3 years ago
10

PLEASE HELP ASAP 25 PTS

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
5 0

Answer:

B

Step-by-step explanation:

f(x) = y = x^2 + 7

x = y^2 + 7

x - 7 = y^2

sqrt(y^2) = sqrt(x - 7)

y = +/- (x - 7)

Answer B

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Express $0.\overline{5}$ as a common fraction in lowest terms.
andreyandreev [35.5K]
<h3>Answer:  5/9</h3>

=======================================================

Explanation:

0.\overline{5} means that the 5's go on forever because of that horizontal bar over top. So we can write it as 0.\overline{5} = 0.55555\ldots

The three dots indicate it goes on forever following that pattern.

Let

x = 0.55555....

Multiply both sides by 10 to move the decimal point 1 spot to the right

10x = 5.55555....

Notice how both x and 10x involve a decimal number such that we have a string of 5's going on forever. If we subtract the two equations, then 10x-x becomes 9x, while the (5.55555....) - (0.55555....) simplifies to 5. The decimal portions cancel out when we subtract since they line up perfectly. We're effectively subtracting 5-0 when we cross off the decimal portions.

After those subtractions, we're left with 9x = 5 which solves to x = 5/9 when you divide both sides by 9.

Use of a calculator should show that 5/9 = 0.555555.... to help confirm the answer. Your calculator may show the last digit to be a 6 instead of a 5, but this is due to rounding. Ideally you should have a string of infinitely many 5's, but the calculator can only how so many digits.

3 0
2 years ago
If the diameter of the circle below is 16 in., what is the area of the circle?
mote1985 [20]

Answer:

64π inches² (approximately 201.06 inches²)

Step-by-step explanation:

A=\pi r^2 where r is the radius

To find the radius, divide the diameter by 2

16 ÷ 2 = 8 inches

Plug in 8 as the radius

A=\pi (8)^2\\A=64\pi

A=201.06 (approximately)

Therefore, the area of the circle is 64π inches², or approximately 201.06 inches².

I hope this helps!

8 0
3 years ago
Read 2 more answers
NEED MAJOR HELP!!!!!!!!
Flura [38]
Hi,
Principal=$650, R=3.5%, T=6 yrs
Amount=Principal * (100+R%/100)^no. of yrs
Amount=650 * (100+3.5/100)^6
Amount= 650 *  103.5/100 *  103.5/100 *  103.5/100 *  103.5/100 *  103.5/100 *  103.5/100<span>
Amount=</span> 650 *  1.035 *  1.035 *  1.035 *  1.035 *  1.035 * <span> 1.035
Amount=799.016</span>
Hope this helps you.
6 0
3 years ago
Which lines, if any, must be parallel based on the given information? Justify your conclusion.
77julia77 [94]
A must be parallel to b.

Proof:
∠3 = <span>∠13 (given)
</span>∠15 = <span>∠13 (vertically opposite angles are equal)
Since </span>∠13 = ∠3 and ∠13 = ∠15, ∠15 = <span>∠3

Then, a must be parallel to b (transverse line d cuts parallel lines producing converse alternate angles that are equal (ie </span>∠15 = <span>∠3))
</span>
7 0
3 years ago
Read 2 more answers
РАЗЛОЖИТЕ НА МНОЖИТЕЛИ ОЧЕНЬ НАДО ДАЮ ВСЕ ЧТО ЕСТЬ ПОМОГИТЕ ПРОШУ !1!1!1!!11!!1
dexar [7]

Answer:

I'm not sure i don't read thing langa no cap

Step-by-step explanation:

4 0
2 years ago
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