All categories

3 years ago

I need help with a algebra question pleasee

Mathematics

2 answers:

svetoff [14.1K]3 years ago

4 0

Answer:

Whats the question?

Step-by-step explanation:

rusak2 [61]3 years ago

3 0

Answer:

yes

Step-by-step explanation:

You might be interested in

Solve the triangle A = 2 B = 9 C =8

VARVARA [1.3K]

Answer:

$\begin{gathered} A=\text{ 12}\degree \\ B=\text{ 114}\degree \\ C=54\degree \end{gathered}$

Step-by-step explanation:

To calculate the angles of the given triangle, we can use the law of cosines:

$\begin{gathered} \cos (C)=\frac{a^2+b^2-c^2}{2ab} \\ \cos (A)=\frac{b^2+c^2-a^2}{2bc} \\ \cos (B)=\frac{c^2+a^2-b^2}{2ca} \end{gathered}$

Then, given the sides a=2, b=9, and c=8.

$\begin{gathered} \cos (A)=\frac{9^2+8^2-2^2}{2\cdot9\cdot8} \\ \cos (A)=\frac{141}{144} \\ A=\cos ^{-1}(\frac{141}{144}) \\ A=11.7 \\ \text{ Rounding to the nearest degree:} \\ A=12º \end{gathered}$

For B:

$\begin{gathered} \cos (B)=\frac{8^2+2^2-9^2}{2\cdot8\cdot2} \\ \cos (B)=\frac{13}{32} \\ B=\cos ^{-1}(\frac{13}{32}) \\ B=113.9\degree \\ \text{Rounding:} \\ B=114\degree \end{gathered}$ $\begin{gathered} \cos (C)=\frac{2^2+9^2-8^2}{2\cdot2\cdot9} \\ \cos (C)=\frac{21}{36} \\ C=\cos ^{-1}(\frac{21}{36}) \\ C=54.3 \\ \text{Rounding:} \\ C=\text{ 54}\degree \end{gathered}$

3 0

1 year ago

A student received a 75% on an exam. If there were 20 questions on the exam, which ratio would show the number of questions answ

Agata [3.3K]

75%=¾
¾*20=15

He answered 15 questions correctly.

6 0

3 years ago

Read 2 more answers

What is half of seven in a whole number

Nikitich [7]

0.7 / 100 = 0.007 or 0.007 x 100 = 0.7 hope this helps

6 0

3 years ago

Need help plzzzzzzzzzzxx

densk [106]

9514 1404 393

Answer:

(a) 15/17

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the cosine relation:

Cos = Adjacent/Hypotenuse

cos(P) = PQ/PR

cos(P) = 15/17

8 0

3 years ago

You have $4150.in a cookie jar. Each month you spend half of the balance. How much do you have after 4 months? (Round your answe

trasher [3.6K]

Answer:

$259.4

Step-by-step explanation:

$4150/2

$2075/2

$1037.5/2

$518.75/2= $259.375

round to nearest cent = $259.4

8 0

3 years ago