MATHEMATICS HIGH SCHOOL

What is the value of -2.86 + 4.15 - 16.43?

Answers

Answer 1

Answer:

Answer: -15.14

Step-by-step explanation:

-2.86 + 4.15 = 1.29

1.29 - 16.43 = 15.14

Answer 2

Answer: The answer is -15.14! x

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Given: B is the midpoint of AC
EB=BC

Prove: AB=BC

Answers

Answer:

Step-by-step explanation:Since B is the midpoint of AC, this means that AB and BC are equal in length, as the midpoint of a line segment divides it into two equal parts.

2. Let's assume that AB is not equal to BC. In this case, one of the line segments AB or BC would be longer than the other.

3. Since EB = BC, if AB is longer than BC, then EB would be shorter than AB. But since B is the midpoint of AC, EB and BC should be equal in length.

4. Similarly, if BC is longer than AB, then EB would be longer than BC. But again, EB and BC should be equal since B is the midpoint of AC.

5. Since assuming AB is not equal to BC leads to contradictions, our assumption is false. Therefore, AB must be equal to BC.

Evaluate the expression if x=2 and y=4
4x+3y
a.20
b.21
c.15
d.13

Answers

The required answer would be 14 when substituting x=2 and y=4 in the expression 4x+3y which is the correct answer would be an option (A).

What is the expression?

Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.

What are Arithmetic operations?

Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.

+ Addition operation: Adds values on either side of the operator.

For example 4 + 2 = 6

* Multiplication operation: Multiplies values on either side of the operator

For example 4*2 = 8

We have to evaluate 4x+3y when substitute x=2 and y=4

We have been given that expression as

⇒ 4x + 3y

Substitute the values of x = 2 and y = 4 in the above expression, and we get

⇒ 4(2) + 3(4)

⇒ 8+ 12

⇒ 20

Therefore, the required answer would be 20.

Learn more about the Expressions here :

brainly.com/question/21751419

#SPJ2

$x=2 \ny=4 \n \n4x+3y=4 * 2 + 3 * 4 =8+12=20 \Leftarrow \hbox{answer A}$

A motorcycle and a car leave an intersection at the same time. the motorcycle heads north at an average speed of 20 miles per hour, while the car heads east at an average speed of 48 miles per hour. find an expression for their distance apart in miles at the end of t hours.

Answers

An expression relating the distance between the car and motorcycle after t is 52t

Speed of motorcycle = 20 mph

Speed of car = 48 mph

Distance apart after, t hours :

Recall :

Distance traveled = Speed × time

Hence,

Distance traveled by car after t hours

Distance of car = 48t

Distance traveled by Motorcycle after t hours

Distance of motorcycle = 20t

Since, the direction followed by the car and motorcycle forms a right angle, the distance apart after t hours can obtained using Pythagoras :

Recall from Pythagoras :

a² = b² + c²

Where, a = hypotenus

b and c = opposite and adjacent

Therefore, distance apart :

d² = (48t)² + (20t)²

d² = 2304t² + 400t²

d² = 2704t²

Take the square root of both sides :

d = √2704t²

d = 52t

Therefore, the distance between the car and motorcycle after t hours is : 52t

Learn more : brainly.com/question/8283882

First, determine the distance of the motorcycle and the car from the start point. The distance could be determined using
$\boxed{d=v * t}$
d stands for distance, v stands for speed, t stands for time

The car
d = 48 × t
d = 48t

The motorcycle
d = 20 × t
d = 20t

At the end of t hours, the car is 48t miles (east) from the start point and the motorcycle is 20t miles (north) from the start point.

Second, determine the distance between 48t miles at east and 20t miles at north using pythagoras
distance = $\sqrt{(48t)^(2)+(20t)^(2)}$
distance = $\sqrt{2304t^(2)+400t^(2)}$
distance = $\sqrt{2704t^(2)}$
distance = 52t

The expression for their distance apart at the end of t hours is 52t

HURRY PLEASE!! :(
Find c(8) in the sequence given by c(n) = 20 – 17(n − 1)

Answers

20-17(8-1)
20-17(7)
20-119
Answer
-99

Add 17,346 + 92,601

Answers

Answer:

109,947

Hope this helps!

Answer:

using basic addition.. 17,346 + 92,601 = 109947

A spool of ribbon is 85 inches long. riley needs to cut strips of ribbon that are 17 inches long. what are the possible numbers of strips that riley can cut?