Help please i need to do this for a review

Answer:

X=-4, y=-7

Step-by-step explanation:

6x-5y=11.     1st equation

y=7x+21    2nd equation

6x-5(7x+21)=11. Sub value of y in 2nd equation (7x+22) into 1st equation

6x-35x-105=11. Solve by distributative property

-29x-105=11.   Add x values

-29x=116.         add 105 to both sides

x=-4.                Solve for x

solve for y:

y=7x+21

y=7(-4)+21

y=-28+21

y=-7

check answer by substituting x and y into either equation

6x-5y=11

6(-4)-5(-7)=11

-24+35=11

11=11

Answer:

1.2, 1.6, 2.0

Step-by-step explanation:

Pythagorean theorem

A^2 +b^2=c2

1.2^2+1.6^2=2^2

1.44 + 2.56=4

4=4

Since equation works (4=4), it is a right triangle.

Answer:

29.50 degrees to the nearest hundredth.

Step-by-step explanation:

First we can find the measure of < CGB by using the Cosine Rule:

cos <CGB = (11^2 - 5.3^2 - 6.9^2) / (-2 * 5.3 * 6.9)

= -0.61936

So m < CGB = 128.27 degrees.

Now we can find the measure of x by using the Sine Rule:

11 / sin 128.27 = 6.9  / sin x

sin x =  6.9 * sin 128.27 / 11

= 0.49248

x = 29.5035 degrees

Answer:

x is around 29.5

Step-by-step explanation:

Let's just use the law of cosines.

[tex]c^2 = a^2 + b^2 - 2ab\cos\angle (ab)\\\\6.9^2 = 5.3^2 + 11^2 - 2\cdot5.3\cdot11\cdot \cos x^{\circ}\\47.61 = 28.09 + 121 - 116.6\cdot\cos x^{\circ}\\~\\cos x^{\circ} = \frac{149.09 - 47.61}{116.6} = \frac{101.48}{116.6}\\~\\x^{\circ} = \arccos\frac{101.48}{116.6}\\~\\x^{\circ} \approx 29.5^\circ[/tex]

Answer: D or 75 cm

Step-by-step explanation:

Answer: d : 75 cm^3

Step-by-step explanation: i just took the test:))

Answer:

you need to show the graph in order to get an answer

Answer:

288

Step-by-step explanation:

Answer:

44

Step-by-step explanation:

Answer:

2.5x + 4y = 80

Step-by-step explanation:

Answer:

2.50x + 4y = 80

Step-by-step explanation:

Price * Quantity = sales

Medium shakes

2.50x

Large shakes

4y

Together

2.50x + 4y = 80

Answer:

3.665 units

Step-by-step explanation:

it was right

Answer:

159.14 feet :)

Step-by-step explanation:

Answer:

(x - 3)² + (y + 2)² = 16

Step-by-step explanation:

The center is determined by what number is subtracted from the variables.

The radius is squared and set equal to the variable side.

Answer:

D

Step-by-step explanation:

Answer:

0.2

Step-by-step explanation:

U need to count how many times it goes up and divide 0.4 by 2

Answer:

x - 3.8 = y

Step-by-step explanation:

3.8 - 3.8 = 0

4.2 - 3.8 = 0.4

5.1 - 3.8 = 1.3

7.3 - 3.8 = 3.5

Answer:

=8x^2-10x-3

Step-by-step explanation:

Answer:

tjssjnd

Step-by-step explanation:

sjsnsnsnkssjsjsjsjsnsn....

Answer:

p=4w+1

Step-by-step explanation:

Answer:

Sorry,for the answer it is too difficult brother .

Step-by-step explanation:

The hypotenuse of a right triangle is always the side opposite the right angle. It is the longest side in a right triangle. The other two sides are called the opposite and adjacent sides.

Answer:

he hypotenuse of a right triangle is the side opposite to the right angle

Answer:

what grade yo.u in

Step-by-step explanation:

..

Answer: C

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

Exact Form:7+4√3

Decimal Form:

13.92820323

Hope This Helps!

Answer:

10 feet

Step-by-step explanation:

pythagorean theorem

Answer:

Hypotenuse = 10.

Step-by-step explanation:

h^2 = 6^2 + 8^2

= 36 + 64

= 100

So h= 10.

Answer:

314.16 ft²

Step-by-step explanation:

The flower garden is circular is shape.

To solve for this question, we have to find the area of the circular flower bed

The formula is given as

= πr²

Hence,

= π × 10²

= 314.15926536 ft²

Approximately = 314.16ft²

Therefore, 314.16ft² of plastic is needed

Answer:

Vertical angles are angles that are opposite each other when two lines intersect each other. And they are always equal.

==> 2y +5 = 4y

==> 4y - 2y = 5

==> 2y = 5

==> [tex]y = \frac{5}{2}[/tex]

Option D

Answer:

Step-by-step explanation:

We can use Pythagorean Theorem to find leg BC.

[tex]AB^2=AC^2+BC^2[/tex]

[tex]24^2=12^2+BC^2[/tex]

[tex]576=144+BC^2[/tex]

[tex]BC^2=432[/tex]

[tex]BC=\sqrt{432}[/tex]

[tex]BC=2\sqrt{108}[/tex]

[tex]BC=4\sqrt{27}[/tex]

[tex]BC=12\sqrt{3}[/tex]

So, the measure of leg BC is 12√3.

The volume of the triangular prism is 1360 cubic centimeters, which is option G.

A triangular prism is a three-dimensional geometric shape that consists of two parallel triangular bases and three rectangular faces. It has six faces, nine edges, and six vertices. The volume of a triangular prism is found by multiplying the area of the base triangle by the height of the prism.

V = A * height

To find the volume of a triangular prism, we need to multiply the area of the base (a triangle) by the height of the prism. The area of a triangle is given by the formula:

A = (1/2) * base * height

In this case, the base of the triangle is 10 cm and the height is 8 cm, so:

A = (1/2) * 10 cm * 8 cm

A = 40 cm²

Therefore, the volume of the prism is:

V = A * height

V = 40 cm² * 34 cm

V = 1360 cm³

So, the volume of the triangular prism is 1360 cubic centimeters, which is option G.

To know more about the volume of the triangular prism visit:

brainly.com/question/17421674

#SPJ1

Answer:

8m-4=16

8m=20

m=2.5

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

4(2m -1)/4 = 16/4

2m-1 = 4

2m = 5

m = 5/2 = 2.5

Answer:

The best measure of center for this dot plot is the median.

Step-by-step explanation: