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Firdavs [7]
3 years ago
15

- 15 + n =-9 I need help please explain it too

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
7 0

Answer:

n=6

Step-by-step explanation:

add 15 to both sides  -15+15+n= -9+15 then you get n=6

Delvig [45]3 years ago
4 0

Answer:

N = 6

Step-by-step explanation:

-15 + 6 or -15 - (-6) = -9

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Line c passes through points (1, 14) and (7, 7). Line d is perpendicular to c. What is the slope of line d?
anyanavicka [17]

Answer:

6/7

Step-by-step explanation:

Your first step will be to find the slope of Line C. Using the slope formula of \frac{y_{2}-y_1 }{x_2-x_1}, the slope of Line C is \frac{7-14}{7-1} = \frac{-7}{6}.

If Line D is perpendicular to C, that means the slope is the negative reciprocal of Line C. So, that means the slope is 6/7.

3 0
2 years ago
What does x equal to in this problem<br>​
IgorC [24]

Using the triangle, we can find the angle lengths and using those and trig ratios, find the side lengths. Lets say the top side length is "y".

Using the Law of triangles, we can find the missing angle from 180-90-70=20 deg.

Then we can use the Law of sines,

sin(70)/13=sin(20)/y

y=sin(20)*13/sin(70)

y=15.34

Finally, we use the Pythagorean Theorem, (13)^2+(15.34)^2=x^2

x = 20.1

3 0
3 years ago
Read 2 more answers
Given the information below, QRS is UVT similar to ? If so, give the scale factor.
viktelen [127]
Look\ at\ the\ picture.\\\\\Delta QRS\sim\Delta UVT\ if\ \frac{|QR|}{|UV|}=\frac{|RS|}{|VT|}\\\\\frac{|QR|}{|UV|}=\frac{8}{18}=\frac{4}{9}\\\\\frac{|RS|}{|VT|}=\frac{16}{34}=\frac{8}{17}\\\\Answer:A.\ No,\ the\ triangles\ are\ not\ similar.

4 0
3 years ago
Multiply the polynomials.<br> (7x2 + 5x + 7)(4x - 6)
ipn [44]

Answer:

28^(x^(3))-22x^(3)-2x-42

Step-by-step explanation:

This is what youll get when u multiply

8 0
3 years ago
Help FAST PLZ!!! marking brainliest!
ss7ja [257]

Answer:

After finding the prime factorization of $2010=2\cdot3\cdot5\cdot67$, divide $5300$ by $67$ and add $5300$ divided by $67^2$ in order to find the total number of multiples of $67$ between $2$ and $5300$. $\lfloor\frac{5300}{67}\rfloor+\lfloor\frac{5300}{67^2}\rfloor=80$ Since $71$,$73$, and $79$ are prime numbers greater than $67$ and less than or equal to $80$, subtract $3$ from $80$ to get the answer $80-3=\boxed{77}\Rightarrow\boxed{D}$.

Step-by-step explanation:

hope this helps

5 0
3 years ago
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