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3 years ago

What is tan A? 3/4, 4/3, 3/5, or 4,5?

Mathematics

1 answer:

seropon [69]3 years ago

4 0

Answer:

4/5 if i did my math right

Step-by-step explanation:

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Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula? Qu

sergejj [24]

Answer:

The answer in the procedure

Step-by-step explanation:

we have

$2=-x+x^{2} -4$

$x^{2}-x-4-2=0$

$x^{2}-x-6=0$

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^{2}-x-6=0$

$a=1\\b=-1\\c=-6$

substitute in the formula

$x=\frac{-(-1)(+/-)\sqrt{(-1)^{2}-4(1)(-6)}} {2(1)}$

$x=\frac{1(+/-)\sqrt{25}} {2}$

$x=\frac{1(+/-)5} {2}$

$x=\frac{1(+)5} {2}=3$

$x=\frac{1(-)5} {2}=-2$

8 0

3 years ago

The difference of a twice a number and 10 is less than 28

Romashka [77]

2n-10<28
+10 +10 adding 10 to both sides to get the variable alone
2n<38
_____ divide both sides by 2 to get n by itself on one side
2

n<19

Check:

(2(18))-10<28
36-10<28
26<28 .......................IT WORKS!!!

7 0

4 years ago

What theorem can be used to prove the 2 triangles similar?

ASHA 777 [7]

Answer:

C. SSS

Step-by-step explanation:

$\frac{AB}{SQ} = \frac{AC}{SR} = \frac{BC}{QR} = 2$

Thus, the ratio of the corresponding side lengths of both triangles are equal. This implies that all three corresponding side lengths of both triangles are proportional to each other.

Consequently, based on the SSS Criterion, we can conclude that both triangles are similar to each other.

6 0

3 years ago

What is 2/3 of 6 gallons

riadik2000 [5.3K]

$6* \frac{2}{3} = \frac{12}{3} =4$

The answer is 4 gallons.

7 0

4 years ago

Which is the equation of a line perpendicular to the line with the equation 3x+4y=7

Gemiola [76]

Answer:

Any line with the slope of 4/3 would be perpendicular.

Step-by-step explanation:

To find this, first solve the equation for y.

3x + 4y = 7

4y = -3x + 7

y = -3/4x + 7/4

Perpendicular lines always have opposite and reciprocal slopes. Therefore, we flip the slope in the original equation (-3/4 becomes -4/3) and then we change the sign (-4/3 becomes 4/3)

3 0

4 years ago

Read 2 more answers