All categories

2 years ago

Determine the value of x for the following equation. 3(-9 - 4x) -4 = 8x -9(x + 12)

Mathematics

2 answers:

Makovka662 [10]2 years ago

4 0

Answer:

-77/13

Distribute 3 to the ones in the parenthisis and do the same to the other side and distribute the negative nine. solve what is left and subtract the two terms and simply solve whats next.

Morgarella [4.7K]2 years ago

4 0

Answer: x = 7
3(-4x - 9) - 4 = 8x - 9(x + 12)
-12x - 27 - 4 = 8x - 9x - 108
-12 x - 31 = -x - 108
Add 31 on both side
-12x - 31 + 31 = - x - 108 + 31
-12x = -x - 77
- x from both said
-12x + x = -x -77 + x
-11x = -77
Divide both side of the equation by the same factor
-11x/-11 = -77/-11
X= 7

You might be interested in

If Triangle Q S R is congruent to triangle Y X Z describes two triangles, which other statement is also true? Triangle Q R S is

choli [55]

Answer: omg i need help with the exact same question

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Even more trig ratios see attachment

egoroff_w [7]

Step-by-step explanation:

1. Use the Pythagorean theorem to solve for side KM:

16^2+KM^2=34^2
256+KM^2=1156
KM^2=900
KM=30

2. Cosine is adjacent over hypotenuse, so cosine of M would be KM/34, or 30/34

3. Tangent is opposite over adjacent, so tangent of L will be KM/16, or 30/16

4. Sine is opposite over hypotenuse, so sine of M will be 16/34

5. KM=30, solved for in step 1.

hope this helps!!

4 0

2 years ago

I need on this one please

Flauer [41]

Aimme is right. All the sides are obtuse. They do not equal exactly 90 degrees.

8 0

3 years ago

Read 2 more answers

Un cono ha l'area laterale di 255 pigreco cm^2, l'apotema di 17 cm e pesa 900 pigreco g. Calcola il peso specifico del materiale

valkas [14]

Answer:

The specific weight is $1.5\frac{g}{cm^{3}}$

Step-by-step explanation:

The question in English

A cone has a lateral area of 255 pi cm^2, an apothem of 17 cm and weighs 900 pi g. It calculates the specific weight of the material of which it is composed

step 1

Find the radius of the cone

we know that

The lateral area of a cone is equal to

$LA=\pi rl$

we have

$LA=255\pi\ cm^{2}$

$l=17\ cm$

substitute the values

$255\pi=\pi r(17)$

Simplify

$255=r(17)$

$r=255/(17)=15\ cm$

step 2

Find the height of the cone

Applying the Pythagoras Theorem

$l^{2} =r^{2} +h^{2}$

substitute the values and solve for h

$17^{2} =15^{2} +h^{2}$

$h^{2}=17^{2}-15^{2}$

$h^{2}=64$

$h=8\ cm$

step 3

Find the volume of the cone

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2}h$

substitute the values

$V=\frac{1}{3}\pi (15)^{2}(8)$

$V=600\pi\ cm^{3}$

step 4

Find the specific weight

Divide the mass by the volume

$\frac{900\pi }{600\pi}=1.5\frac{g}{cm^{3}}$

4 0

3 years ago

Please help me with this

Nikitich [7]

Answer: Your answer is A,C, and D

Step-by-step explanation:

I took that last year and somehow still rememeber it and if you dont believe me click this link and ill show you how on search Cameron the OG and football Madness and ill give you a link to my third channel Math Nerds an help you

8 0

2 years ago