All categories

3 years ago

Please help

Mathematics

2 answers:

OverLord2011 [107]3 years ago

6 0

Answer

= 5 units

Explanation

2a - 2 = a + 1

2a - a = 1+2

a = 3

XY = 3a - 4

= 3×3 - 4

= 9 - 4

= 5 units

Dima020 [189]3 years ago

4 0

= 9-4

= 5

So 5 units is the answer

You might be interested in

In ΔUVW, w = 44 cm, u = 83 cm and ∠V=141°. Find the area of ΔUVW, to the nearest square centimeter.

Tema [17]

Answer:

$Area \approx 1149\ cm^2$

Step-by-step explanation:

Given that:

ΔUVW,

Side w = 44 cm, (It is the side opposite to $\angle W$ )

Side u = 83 cm (It is the side opposite to $\angle U$ )

and ∠V=141°

Please refer to the attached image with labeling of the triangle with the dimensions given.

Area of a triangle with two sides given and angle between the two sides can be formulated as:

$A = \dfrac{1}{2}\times a\times b\times sinC$

Where a and b are the two sides and

$\angle C$ is the angle between the sides a and b

Here we have a = w = 44cm

b = u = 44cm

and ∠C= ∠V=141

Putting the values to find the area:

$A = \dfrac{1}{2}\times 44\times 83\times sin141\\\Rightarrow A = \dfrac{1}{2} \times 3652 \times sin141\\\Rightarrow A =1826 \times 0.629\\\Rightarrow A \approx 1149\ cm^2$

So, the area of given triangle to the nearest square centimetre is:

$Area \approx 1149\ cm^2$

8 0

3 years ago

Triangle ABC has vertices A(-2,0), B(2,5), C(3, 1). The reflection of the image of triangle ABC is triangle A'B'C' with vertices

geniusboy [140]

Answer: Reflection about x-axis

Step-by-step explanation:

Given

Initially, vertices are $A(-2,0), B(2,5),C(3,1)$

After reflection they become $A(-2,0),B(2,-5),C(3,-1)$

It is clear that the x coordinate remains unchanged and the y coordinate changes its sign. It occurs when reflection is done about the x-axis.

For example, when (a,b) is reflected about the x-axis, it becomes (a,-b).

So, here reflection is being done about the x-axis.

4 0

3 years ago

Can som one help me on this?

puteri [66]

Answer is $8 for an children and $15 for adult

1 ticket would be $8

5 0

2 years ago

Read 2 more answers

A floor mat for gymnastics is a square with a side length of 14m. What is the area of the floor mat in square metres?

skad [1K]

Answer:

72 inches

Step-by-step explanation:

3 0

3 years ago

Simplify. Rewrite the expression in the form 4^n. 4^11/4^-8

Tasya [4]

Answer:

S6tep-by-step explanation:

4^(11+8) = 4^19 is the solution

6 0

2 years ago