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satela [25.4K]
3 years ago
10

Help with this please 

Mathematics
1 answer:
emmainna [20.7K]3 years ago
7 0
\bf \begin{array}{llll}
step~1&4x=28\\\\
step~2&x=\cfrac{28}{4}\impliedby \textit{she did not divide 28 by 4}
\end{array}

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Suppose cos(a)=.325
tatyana61 [14]

The value of tan a is 2.9098

Explanation:

The given value is \cos (a)=0.325

Now, we shall find the value of sin (a), using the identity,

\sin ^2(a)+\cos^2(a)=1

Substituting the value of cos (a), we get,

\sin ^2(a)+(0.325)^2=1\\\sin ^2(a)+0.1056=1

Subtracting both sides by 0.1056, we have,

\sin ^2(a)=0.8944

Taking square root on both sides, we get,

sin a= 0.9457

Now, we shall substitute the value of sin (a) and cos (a) to determine the value of tan (a) in the identity tan (a) =\frac{sin(a)}{cos(a)}

tan (a) =\frac{0.9457}{0.325}\\tan (a) = 2.9098

Thus, the value of tan (a) is 2.9098

7 0
3 years ago
Which of the following could be the equation of the graph shown below?
Oksanka [162]

Answer:

B and C.

Step-by-step explanation:

A is  a horizontal line so is not possible.

B. is one possibility.

C.  

Convert C and D to slope-intercept form:

-4x + 2y = -6

2y = 4x - 6

y = 2x - 3.  

This is also possible.

D.

2x + 3y = -9

3y = -2x  -9

y = -2/3 x - 3.

This has a negative slope so not possible.

8 0
3 years ago
(PLEASE HELP, BRAINLIEST IF CORRECT)
MaRussiya [10]

Answer:

Dylan's speed 30

Mike's 20

Step-by-step explanation:

hope this helps you!

6 0
3 years ago
Read 2 more answers
(3/4) URGENT!! PLEASE HELP! -50 POINTS- WILL MARK BRAINLEST ASAP AND 5 STARS IF CORRECT!!! please no wrong answers for the point
saul85 [17]

Answer:

D

Step-by-step explanation:

The graph above is your graph.

As <em>x</em><em> </em>increase, <em>y</em> decreases

As <em>x</em> decrease, <em>y</em> increases.

However, there is a small portion of the graph where both <em>x</em><em> </em>and <em>y</em><em> </em><em>were</em><em> </em><em>positive</em><em>.</em><em> </em>

But I'm guessing it should be D.

8 0
3 years ago
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Latoya used 4 gallons of ginger ale,1gallon of orange juice, and 1 gallon of pineapple juice to make punch for her brother birth
erastovalidia [21]
6 gallons of liquid will equal 96  cups of punch
5 0
3 years ago
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