All categories

3 years ago

What is the value of x?

Mathematics

2 answers:

Julli [10]3 years ago

6 0

Answer:

Step-by-step explanation: 90-30=60 60÷4=15

zmey [24]3 years ago

3 0

Answer:

Step-by-step explanation:

The angle in total is 90* because its a right angle.

The equation is 4x+30=90

subtract 30 from both sides

4x=60

divide 4 from both sides

x=15

hope this helped!

You might be interested in

A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx⎯ ⎯ x¯ = 840 and

gayaneshka [121]

Answer:

$(832.156, \ 847.844)$

Step-by-step explanation:

Given data :

Sample standard deviation, s = 15

Sample mean, $\overline x = 840$

n = 23

a). 98% confidence interval

$\overline x \pm t_{(n-1, \alpha /2)}. \frac{s}{\sqrt{n}}$

$$E= t_{( n-1, \alpha/2 )} \frac{s}{\sqrt n}}$

$t_{(n-1 , \alpha/2)} \frac{s}{\sqrt n}$

$t_{(n-1, a\pha/2)}=t_{(22,0.01)} = 2.508$

∴ $E = 2.508 \times \frac{15}{\sqrt{23}}$

$E = 7.844$

So, 98% CI is

$(\overline x - E, \overline x + E)$

$(840-7.844 , \ 840+7.844)$

$(832.156, \ 847.844)$

4 0

2 years ago

1. Find the common difference of the sequence: 31, 26, 21, 16, ...

hichkok12 [17]

Answer:

it is subtract 5

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The hypotenuse of one side of a right angled triangle are 5cm and 4cm respectively. what is the length of the other side

AURORKA [14]

Answer: 3cm

Explanation:

We can use Pythagorean’s theorem to find that other side:

a^2 + b^2 = c^2
a^2 + 4^2 = 5^2
a^2 = 25 - 16
a^2 = 9
a = 3

Therefore, the other side is 3cm

3 0

3 years ago

Read 2 more answers

Find the percent of change, the laptop was marked from 895 to 720.

Anna11 [10]

Answer:

19.55%

Step-by-step explanation:

%change = (895-720)/895 * 100

= 19.55%

Since the original is more than the later, then it is a decrease

4 0

2 years ago

Read 2 more answers

Gordon earns 12% commission as a salesperson. He sold a playground slide that cost $270. How much commission did Gordon earn?

Rudiy27

Answer:

Step-by-step explanation:

so he gets a 12% commission on his sales. He sold a slide that costs 270.

so he would get 12% of 270

turn ur percent to a decimal..." of " means multiply

0.12 * 270 = $ 32.40 <===

6 0

2 years ago