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rewona [7]
3 years ago
15

Solve for f. –2(f − 14) + 9 = 5 f =

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

f=37/7

Step-by-step explanation:

I hope this helps you

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What is the value of x. Please explain how you came to your answer (my other question is worth less and has a scam answer on it
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

8 0
2 years ago
on a recent test matthew got 18 out of 40 problems correct at the same rate how many problems would matthew get correct if there
Flauer [41]

Answer:

27

Step-by-step explanation:

18/40 = 27/60

8 0
3 years ago
The vertices of a triangle ABC are A(7, 5), B(4, 2), and C(9, 2). What is measure of angle ABC? 30° 45° 56.31° 78.69°
GenaCL600 [577]

The measure of angle ABC is 45°

<em><u>Explanation</u></em>

Vertices of the triangle are:   A(7, 5), B(4, 2), and C(9, 2)

According to the diagram below....

Length of the side BC (a) =\sqrt{(4-9)^2+(2-2)^2}= \sqrt{25}= 5

Length of the side AC (b) = \sqrt{(7-9)^2 +(5-2)^2}= \sqrt{4+9}=\sqrt{13}

Length of the side AB (c) = \sqrt{(7-4)^2 +(5-2)^2} =\sqrt{9+9}=\sqrt{18}

We need to find ∠ABC or ∠B . So using <u>Cosine rule</u>, we will get...

cosB= \frac{a^2+c^2-b^2}{2ac} \\ \\ cos B= \frac{(5)^2+(\sqrt{18})^2-(\sqrt{13})^2}{2*5*\sqrt{18} }\\ \\ cosB= \frac{25+18-13}{10\sqrt{18}} =\frac{30}{10\sqrt{18}}=\frac{3}{\sqrt{18}}\\ \\ cosB=\frac{3}{3\sqrt{2}} =\frac{1}{\sqrt{2}}\\ \\ B= cos^-^1(\frac{1}{\sqrt{2}})= 45 degree

So, the measure of angle ABC is 45°

7 0
3 years ago
Read 2 more answers
Y= x+2 -1 if<br> a)y&gt;0<br> b)y&lt;0<br> c)y=0
kvv77 [185]

Answer:

A

Step-by-step explanation:

I may be wrong,If i am i apoligize fr the inconvenience!!

If not, Your very welcome.

6 0
2 years ago
2-(-8)+(-3)= need answer
Ray Of Light [21]

Answer:

7

Step-by-step explanation:

2-(-8)+(-3)

2+8-3

10-3

7

8 0
3 years ago
Read 2 more answers
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