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

What two whole numbers is √29 between? 3 and 4 4 and 5 5 and 6 6 and 7

Nadya [2.5K]

Answer:

5 and 6

Step-by-step explanation:

Consider perfect square numbers either side of 29

25 < 29 < 36, thus

$\sqrt{25}$ < $\sqrt{29}$ < $\sqrt{36}$ , that is

5 < $\sqrt{29}$ < 6

5 0

3 years ago

Read 2 more answers

Need help on part A Please

Sonbull [250]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

How much kinetic energy does a 80 kg man have while running at 1.5 M/S

Anni [7]

KE=1/2(m)(v)^2

KE=1/2(80)(1.5)^2

KE=90 J

7 0

4 years ago

. A triangle has side lengths of 8, 7, and 14. To the nearest tenth of a degree find the measure of the angle opposite the side

4vir4ik [10]

Given:

The measure of three sides of a triangle are 8, 7 and 14.

To find:

The measure of the angle opposite the side of length 8.

Solution:

According to the Law of Cosine:

$\cos A=\dfrac{b^2+c^2-a^2}{2bc}$

Let a=8, b=7 and c=14, then by using Law of Cosine, we get

$\cos A=\dfrac{7^2+14^2-8^2}{2(7)(14)}$

$\cos A=\dfrac{49+196-64}{196}$

$\cos A=\dfrac{181}{196}$

Taking cos inverse on both sides.

$A=\cos^{-1}\dfrac{181}{196}$

$A=22.561328$

$A\approx 22.6$

Therefore, the measure of the angle opposite the side of length 8 is 22.6 degrees.

7 0

3 years ago

HELP PLEASE I DON'T UNDERSTAND THIS

matrenka [14]

Answer:

the base of the window is 5.5 or 5 1/2 ft

Step-by-step explanation:

a = bh

h = b/a

25 2/3 divided by 4 2/3 is 5.5

5 1/2

dont forget to mark as brainliest !!

7 0

3 years ago

Read 2 more answers