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3 years ago

What is x for these two?

Mathematics

1 answer:

djverab [1.8K]3 years ago

6 0

Answer:

a)x=-10, b)x=7

Step-by-step explanation:

a)2x+6= x-4

x=-6-4= 10

b) 20x-18x= +8+6

2x/2=14/2= 7=x

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2^5 + 10=?????????????

Hoochie [10]

Answer:

Answer is 42

Step-by-step explanation:

2^5 + 10

2*2*2*2*2 + 10

32 + 10

7 0

3 years ago

Read 2 more answers

System of Equations <br> Need help<br> Trig

Yanka [14]

Looks like the system is

$\begin{cases}-2x+y+6z=1\\3x+2y+5z=16\\7x+3y-4z=11\end{cases}$

We can eliminate $y$ by taking

$(3x+2y+5z)-2(-2x+y+6z)=16-2(1)$

$\implies3x+2y+5z+4x-2y-12z=16-2$

$\implies7x-7z=14$

$\implies x-z=2$

so that $z=x-2$ , and

$(7x+3y-4z)-3(-2x+y+6z)=11-3(1)$

$\implies7x+3y-4z+6x-3y-18z=11-3$

$\implies13x-22z=8$

Substitute $z=x-2$ into this last equation and solve for $x$ :

$13x-22(x-2)=8$

$\implies13x-22x+44=8$

$\implies-9x=-36$

$\implies x=4$

Then

$z=x-2$

$\implies z=4-2$

$\implies z=2$

Plug these values into any one of the original equation to solve for $y$ :

$-2x+y+6z=1$

$\implies-2(4)+y+6(2)=1$

$\implies-8+y+12=1$

$\implies y=-3$

Hence the solution is x = 4, y = -3, and z = 2.

6 0

4 years ago

How many triangles can be constructed with angles measuring 110°, 50°, and 20°?

lutik1710 [3]

The answer would be B) more than one hope this helped you!

8 0

3 years ago

Read 2 more answers

The double number lines show the ratio of yards to miles. A double number line with 6 equally spaced tick marks. The line labele

tia_tia [17]

There will be 781440 yards in 444 miles.

Given, The double number lines show the ratio of yards to miles.

A double number line with 6 equally spaced tick marks.

The line labeled yards, reads from left to right: 0, four unlabeled tick marks, 8,800. The line labeled miles, reads from left to right: 0, four unlabeled tick marks, 5.

as, 1 mile = 1760 yards

we have to find the number of yards in 444 miles.

if 1 mile = 1760 yards

on multiplying both the sides by 444, we get

444 miles = 1760 × 444

444 miles = 781440 yards.

So, there are 781440 yards in 444 miles.

Hence, there are 781440 yards in 444 miles.

Learn more about Coordinate Geometry here brainly.com/question/18269861

#SPJ4

6 0

1 year ago

What does Sin mean in geometry

Darya [45]

Answer:

in mathematics, the sine is a trigonometric function of an angle.

Step-by-step explanation:

The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse).

Fixed point: 0

Critical point: kπ + π/2

Inflection point: kπ hope this helps you :)

4 0

3 years ago

Read 2 more answers