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3 years ago

Find the missing Angle.

Mathematics

2 answers:

Dmitry [639]3 years ago

8 0

Answer: I might he wrong

40 or 45

Step-by-step explanation:

mylen [45]3 years ago

7 0

The answer is 40 degrees

You might be interested in

Estimate the sum by rounding to the nearest whole number 18.74+41.49

satela [25.4K]

Hello!

I'll start w/ 18.74 to round. To round 18.74, the 4 wouldn't have any effect raising the 7's value, since anything 4 and below won't increase the number's value. Now you just have 18.7. The 7 will increase the 8's value to a 9, since anything 5 and up will increase the rounded number's value. So 18.74 is now rounded up to 19.

For 41.49, you'll round the 4 to a 5, since 9 will increase the value of the 4. Now you have 41.5. The newly rounded 5 will then increase the 1's value, making it a 2. So now 41.49 is now rounded up to 42.

You can now estimate the sum by adding 19 w/ 42 to get an estimate of 61!

I hope this helps!!!

6 0

3 years ago

Being 10 miles apart, two cars started moving towards each other. After one hour they met, and during that time the first car co

Vladimir [108]

The speed of the first car was 6 miles/hour

<h3>Further explanation</h3>

Acceleration is rate of change of velocity.

$\large {\boxed {a = \frac{v - u}{t} } }$

$\large {\boxed {d = \frac{v + u}{2}~t } }$

<em>a = acceleration ( m/s² )</em>

<em>v = final velocity ( m/s )</em>

<em>u = initial velocity ( m/s )</em>

<em>t = time taken ( s )</em>

<em>d = distance ( m )</em>

Let us now tackle the problem!

<u>Given:</u>

Distance between two cars = d = 10 miles

Time Taken = t = 1 hour

Distance covered by the first car = d₁ = 2 + d₂

<u>Unknown:</u>

Speed of the first car = v₁ = ?

<u>Solution:</u>

$d = d_1 + d_2$

$10 = ( 2 + d_2 ) + d_2$

$10 = 2 + 2d_2$

$10 - 2 = 2 d_2$

$8 = 2 d_2$

$d_2 = 8 \div 2$

$d_2 = 4 \texttt{ miles}$

$\texttt{ }$

$d_1 = 2 + d_2 = 2 + 4 = 6 \texttt{ miles}$

$v_1 = d_1 \div t = 6 \div 1 = 6 \texttt{ miles/hour}$

<h3>Learn more</h3>

Velocity of Runner : brainly.com/question/3813437
Kinetic Energy : brainly.com/question/692781
Acceleration : brainly.com/question/2283922
The Speed of Car : brainly.com/question/568302

<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords: Velocity , Driver , Car , Deceleration , Acceleration , Obstacle

7 0

3 years ago

Read 2 more answers

Calculate the area of a rectangle with a base of 15 inches and an altitude of 7 inches

labwork [276]

A= b•h

A= 15•7= 105 in²

5 0

3 years ago

yesterday were 1743 people visited the flea market. today 576 people more thant yesterday. how many peolpe today are in the flea

Katen [24]

The is a subtraction equation, so the smaller number from the bigger number.
1743 - 576 = 1167 :3

7 0

3 years ago

Read 2 more answers

A national dental association conducted a survey to find the average (mean) amount of time dentists spend on dental fillings per

eduard

Answer:

The probability of finding a sample mean less than 18 hours is 0.0082

Step-by-step explanation:

To find the probability of finding a sample mean less than 18 hours, we need to calculate the z-score of this sample mean 18. And the probability of finding a sample mean less than 18 hours is P(z<z(18)).

Z-score can be calculated as follows:

z(18)= $\frac{X-M}{\frac{s}{\sqrt{N} } }$ where

X is the sample mean (18 hours)

M is the average hours dentists spend per week on fillings (20 hours)

s is the standard deviation (10 hours)

N is the sample size (144)

Putting the numbers, we get:

z(18)= $\frac{18-20}{\frac{10}{\sqrt{144} } }=-2.4$

Using z- table we can find that P(z<z(18)) = 0.0082

4 0

3 years ago