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2 years ago

Help Please Just solve the question below

Mathematics

1 answer:

MAVERICK [17]2 years ago

3 0

B. (3, 0.5).

Step by step explanation:

x + 2y = 4

2x - 2y = 5

Adding the 2 equations eliminates the y:

3x = 9

x = 3

Substitute for x in the first equation:

3 + 2y = 4

2y = 1

y = 0.5.

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Bethania's garden is in the shape of a right triangle. She has built walls on two sides

worty [1.4K]

Answer:

8 feet

Step-by-step explanation:

you use pythagoras so you do 6² + 4² =52. then you square root 52 which is 7.2 so she needs 8 feet.

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4 years ago

Solve for the equation for x. 3(10 – 4x) + 6 = 12

AVprozaik [17]

Answer:

Step-by-step explanation:

3(10 – 4x) + 6 = 12

first you need to use the distributive property

30 – 12x + 6 = 12

then subtract 6 from each side

30 – 12x = 6

then subtract 30 from each side

– 12x = -24

divide both sides by negative 12

x = 2

3 0

3 years ago

A. What are the coordinates of the vertices of the triangle below?

Viktor [21]

Answer:

Solution given:

A.coordinate are

A(-2,3)

B(0,-3)

C(4,5)

B.Each length are :

we have

length $\sqrt{(x2-x1)²+(y2-y1)²}$

now

AB: $\sqrt{(-2-0)²+(3+3)²}$ = $2\sqrt{10}$ units

BC: $\sqrt{(0-4)²+(-3-5)²}$ = $4\sqrt{5}$ units

AC: $\sqrt{(-2-4)²+(3-5)²}$ = $2\sqrt{10}$ units

C. the figure:

By using Pythagoras law

base[b]=AB=perpendicular [p]=AC

hypotenuse [h]=BC

we have

h²=p²+b²

substituting value

( $4\sqrt{5}$ )²=2p²

16*5=2*( $2\sqrt{10}$ )²

80=2*4*10

80=80

SO IT IS RIGHT ANGLED ISOSCELES TRIANGLE.

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3 years ago

Equation of a line with an slope of 1/2 that contains (-4, 7)

nasty-shy [4]

Equation of a line with an slope of 1/2 that contains (-4, 7) is $y=\frac{1}{2} x+9$

Solution:

We have been given a point and slope of an equation and have been asked to write it in an equation. The two forms of writing a point and slope in equation are point slope form and standard form.

The standard form of a line is in the form Ax + By = C where A is a positive integer, and B, and C are integers. The standard form of a line is just another way of writing the equation of a line.

To write in standard form we will first write it in point slope form and then rearrange it into a standard from.

The formula for point slope form:

$y-y_{1}=m\left(x-x_{1}\right)$