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3 years ago

What’s the value of x trigonometry question

Mathematics

1 answer:

Softa [21]3 years ago

5 0

Answer:

x=9.2394

Step-by-step explanation:

It's tan we're going to use because we're looking for the opposite and we already have the angle

Therefore, x will be

Tan 57= x/6

1.5399= x/6

x= 6*1.5399

x= 9.2394

You can approximate it to the nearest whole number which will be 9

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−2.8+2.4+7.8−2.8<br><br>I dont know how to solve this expression

Nataliya [291]

Step-by-step explanation:

-2.8 +2.4=-.4

-.4+7.8=7.4

7.8-2.8=5

i hope this helps ; )

6 0

3 years ago

If (x, 9) is a solution to 5x - 2y = 12, what is the value of x ?

lina2011 [118]

X= 6

Explanation:

y=9 so rewrite the equation like this:

5x-2(9)=12

Multiply -2 by 9:

5x-18=12

Cancel out the -18:

5x-18=12
+18 +18

5x=30

Divide both numbers by 5:

5x/5 = 30/5

As an answer, you will get x=6:

Hope this helped:)

7 0

4 years ago

Using suitable identity find the value of

Nostrana [21]

(42)^3 -(24)^3 - (18)^3
= (74,088)-(13,824)-(5,832)
= 54,432

4 0

3 years ago

Coefficiants of (2x+y)^4

sattari [20]

By the binomial theorem,

$(2x+y)^4=\displaystyle\sum_{k=0}^4\binom 4k(2x)^{4-k}y^k=\sum_{k=0}^4\binom 4k2^{4-k}x^{4-k}y^k$

where

$\dbinom nk=\dfrac{n!}{k!(n-k)!}$

Then the coefficients of the $x^{4-k}y^k$ terms in the expansion are, in order from $k=0$ to $k=4$ ,

$\dbinom 402^{4-0}=1\cdot2^4=16$

$\dbinom412^{4-1}=4\cdot2^3=32$

$\dbinom422^{4-2}=6\cdot2^2=24$

$\dbinom432^{4-3}=4\cdot2^1=8$

$\dbinom442^{4-4}=1\cdot2^0=1$

3 0

4 years ago

A circle has a diameter of 4 in. What is the Radius and Circumference

Digiron [165]

Answer:

see below

Step-by-step explanation:

The radius is 1/2 of the diameter

r = 1/2 d

r = 1/2(4) = 2 inches

The circumference is given by

C = 2 * pi * r

C = 2 * pi * 2

C = 4 pi inches

Using 3.14 as an approximation for pi

C = 12.56 inches

3 0

2 years ago

Read 2 more answers