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3 years ago

I NEED HELP ASAP PLEASE!!!!!

Mathematics

2 answers:

Bess [88]3 years ago

8 0

A

plug in x = -1 to both sides and you get 1 as the answer for both sides.

djverab [1.8K]3 years ago

7 0

Answer:

Step-by-step explanation:

If the graphs intersect at point (-1,1) we can substitute the equations to determine if the solutions will yield the point of intersection. Lets look at each equation and solve for x and y:

$3\cdot(x)+4=-2\cdot(x)-1$

$x=-1$

Substitute it into one of the equations:

$y=3\cdot(-1)+4=1$

Therefore the equations in choice at intersect at point (-1,1)

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The area of a square is 225cm². On the map drawn to scale 1 : 3 find the area of the square

Olin [163]

Answer:

25 cm^2

Step-by-step explanation:

A scale drawing is a reduced form in terms of dimensions of an original image / building / object

the scale drawing is usually reduced at a constant dimension

scale of the drawing = original dimensions / dimensions of the scale drawing

Area if a square = length²

225 = length²

length = √225

length = 15

if the map is drawn to scale of 1 : 3

the length on the map = 15/3 = 5

area of the square 5 x 5 = 25

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3 years ago

From the top of a 100-ft building a man

romanna [79]

Answer:

219m

Step-by-step explanation:

Since the man observes the car with angle 15 before observing in 33 degrees.

For the first observation

The angle observation gives an angle if 33 degrees with the horizontal.

It gives a triangle which I'll attach to the que,

from the first triangle

Tan 33 = 100/y

Y= 100/ tan 33

Y = 153.99m.

This is the distance from the building to the distance where it was secondly observed( 33).

To find x

tan 15 = 100/(153.99+x)

153.99 + x = 100/ tan 15

153.99 + x = 373.21

The distance between the two observed angles

X= 219m.

5 0

3 years ago

Movie tickets cost $8 for children and $12 for adults. A movie theater has 300 seats. The theater wants to collect at least $4,8

butalik [34]

Answer:

8x + 12y = 4800

$\left \{ {{8x + 12y = 4800} \atop {x+ y = 300}} \right.$

Step-by-step explanation:

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3 years ago

Select whether the triangle is inscribed in the circle, circumscribed about the circle, or neither.

Ganezh [65]

Neither inscribed in the circle, nor circumscribed about it! 2 if the sides of the triangle are TANGENT to the circle, which means just touching at one point

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3 years ago

Read 2 more answers

Two equivalent ratios for 14/8

FromTheMoon [43]

14 to 8
14/8 is going to equal 7/4 you get by doing this : 
= (14 ÷ 2)/(8 ÷ 2) 
= 7/4 
= 1 3/4

7 0

3 years ago