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3 years ago

Find the value of x. No Links or scams please. Thanks!

Mathematics

2 answers:

AVprozaik [17]3 years ago

7 0

Answer:

X=8

use sin 30 and cross multiply

storchak [24]3 years ago

6 0

Answer:

C) x=8

Step-by-step explanation:

For a 30-60-90 triangle, the hypotenuse is equal to double the length of the short side, and the longer leg is equal to the short side times the square root of 3. Therefore, x=2(4)=8

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Factor the following

jek_recluse [69]

Answer:

(x - 4)×(x + 4)

Step-by-step explanation:

(x - 4)×(x + 4) = x^2 - 16

First we need to multiply inside the parenthesis one by one

Multiply x with (x + 4) and the result will be x^2 + 4x

Then multiply -4 with (x + 4) and result will be -4x - 16 we then add both of the result together by adding like terms

x^2 + 4x - 4x - 16 = x^2 - 16 (-4x eliminated 4x) therefore the answer to factorised form of x^2 - 16 is (x - 4)×(x + 4)

7 0

4 years ago

Read 2 more answers

A constant force of 15 N is being applied at a constant angle os 30 degree on an object at the same time that a constant force o

Setler [38]

Step-by-step explanation:

Solution:

(a) is the vertical direction, the force of gravity

on the object (or the wight force: w = Mg ) pulls the crate down while the surface reaction. N. pushes it 103N

rd, as shown:

w = Mg = (20.0kg 9.8m s3 - 196N

N- 196N as well

(b) In the horizontal direction, in the absence of

friction, there are two forces: (F) and the 53-N force. Applying the Newton's 2nd law helps the calculation of the unknown force. F. F - 53N (20.0 kg)(2.5 m 3

F = 103N plz mark me as brainliest

6 0

3 years ago

What do I need to do here? I don't understand.

Allushta [10]

All you have to do to solve this is to find the square root of 183.84 and multiply it by 4. Since the square root is 13.558761005342634 then that would equal one side of the square. Multiply it by 4 to get the perimeter of the entire square.

<span>13.558761005342634*4 = 54.2350440214</span>

5 0

3 years ago

Round 34.628 to the nearest hundredth.

zhuklara [117]

30.625 rounded to the nearest hundredth is 30.630, because there is a five at the end, it jumps +5.

3 0

3 years ago

Read 2 more answers

Exercise 4

AleksandrR [38]

Answer:

1. 2.19 cm

2. 30.2m

3. 2.65 cm

4. 9.33cm

5. 14.2 mm

6.497000km²

Step-by-step explanation:

Use the pi button on a calculator and give answers to 3's.f.

1. A circle has an area of 15 cm². Find its radius.

Area of a circle = πr²

15cm² = π × r²

r² = 15cm²/π

r² = 4.7746482927568605

r = √(4.7746482927568605)

r = 2.1850968612 cm

Approximately to 3 s.f ≈ 2.19 cm

2. A circle has a circumference of 190 m. Find its radius.

The circumference of a circle = 2πr

C = 190m

Hence:

190m = 2πr

r = 190m/2π

r = 30.239439187m

Approximately to 3 s.f = 30.2m

3. Find the radius of a circle of area 22 km².

Area of a circle = πr²

22km² = π × r²

r² = 22km²/π

r² = 7.002817496

r = √(7.002817496)

r = 2.6462837142 cm

Approximately to 3 s.f ≈ 2.65 cm

4. Find the radius of a circle of circumference 58.6 cm.

The circumference of a circle = 2πr

C = 58.6cm

Hence:

58.6cm = 2πr

r = 58.6cm/2π

r = 9.3264796652cm

Approximately to 3 s.f = 9.33cm

5. A circle has an area of 16 mm². Find its circumference.

Step 1

Find the radius

Area of a circle = πr²

16 mm² = π × r²

r² = 16 mm²/π

r² = 5.092958178940651

r = √(5.092958178940651)

r = 2.2567583342mm

Circumference of a circle = 2πr

Circumference = 2 × π × 2.2567583342

= 14.179630807mm

Approximately to 3 s.f ≈ 14.2 mm

6. A circle has a circumference of 2500 km. Find its area.

Step 1

Find the radius

The circumference of a circle = 2πr

C = 2500km

Hence:

2500km = 2πr

r = 2500km/2π

r = 397.88735773km

Area of a circle = πr²

Area of the circle = π ×(397.88735773km)²

Area of the circle = 497359.19716km²

Approximately to 3 s.f = 497000km²

5 0

3 years ago

Find the value of x. No Links or scams please. Thanks!​

Find the value of x. No Links or scams please. Thanks!