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LekaFEV [45]
4 years ago
5

Solve for x (9x-18) what's the answer

Mathematics
1 answer:
user100 [1]4 years ago
8 0
All the interior angles of a pentagon add up to 540
540= 9x-18
540+18=9x
558=9x
62=x
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When 40% of the girls left the school assembly, the ratio of the number of boys to girls became 3 to 4. If there were w girls wh
baherus [9]

Number of girls at the time of the assembly started = w

Number of girls left = 40% of w

=\frac{40}{100}w

=\frac{2}{5}w

Remaining girls = w-\frac{2}{5}w

=\frac{3}{5}w

Now, the ratio of the number of boys to girls became 3 to 4.

Let n be the number of boys.

Then, n:\frac{3}{5} w=3:4

Or, \frac{n}{3w/5}= \frac{3}{4}

\frac{5n}{3w}= \frac{3}{4}

20n = 9w

or, n = \frac{9}{20} w

Total number of boys and girls = \frac{9}{20}w+ \frac{3}{5} w

= \frac{9}{20}w+ \frac{12}{20} w

= = \frac{21}{20}w

Hence, the total number of boys and girs is \frac{21}{20} w.

8 0
4 years ago
If you take away 5 from 2 times y, you get 15​
dexar [7]

Answer:

y = 10

Step-by-step explanation:

2y - 5 = 15

make y the subject of the formula

2y = 15 + 5

2y = 20

y = 20/2

y = 10

3 0
3 years ago
Use the graph shown to find the following
navik [9.2K]

Answer:

Step-by-step explanation:

Domain of the function will be,

{x ∈ R | x ≠ -2}

Range of the function is,

{y ∈ R | y ≠ -4}

Intercepts of the function,

Their are no intercepts of the given rational function.

Horizontal asymptotes:

Horizontal line parallel to x-axis representing discontinuity.

y = -4

Vertical asymptotes:

Vertical line parallel to y-axis representing discontinuity.

x = -2

No oblique asymptotes.

4 0
3 years ago
A two umn table with 5 rows. The first column, x, has the entries, negative 2, 0, 2, 4. The second column, y, has the entries, 6
evablogger [386]

Answer:

I think it's A and C

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
T-5 &gt;3(-2+t) <br> please help me
Vladimir79 [104]

Answer:

t < 1/2

Step-by-step explanation:

Isolate the <u>v</u><u>a</u><u>r</u><u>i</u><u>a</u><u>b</u><u>l</u><u>e</u> by dividing each side by <u>f</u><u>a</u><u>c</u><u>t</u><u>o</u><u>r</u><u>s</u> that don't contain the <u>v</u><u>a</u><u>r</u><u>i</u><u>a</u><u>b</u><u>l</u><u>e</u>.

Inequality Form: t < 1/2

Interval Notation: ( -infinity, 1/2)

3 0
3 years ago
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