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anygoal [31]
3 years ago
13

JoeNah, Dekobian and Evan wrote equations to calculate the amount of

Mathematics
1 answer:
marusya05 [52]3 years ago
8 0

Answer:

see the explanation

Step-by-step explanation:

Let

B ---> the balance of money saved.

M ---> the amount invested in dollars

we have

<em>JoeNah's Equation</em>

B=1.5M

For M=$100

substitute in the equation

B=1.5(100)=\$150

<em>Dekobian's Equation</em>

B=M+0.05M

For M=$100

substitute in the equation

B=100+0.05(100)=\$105

<em>Evan's Equation</em>

B=M(1+0.05)

For M=$100

substitute in the equation

B=100(1+0.05)=\$105

In this problem

Dekobian's Equation and Evan's Equation are correct

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Triangle ABC has vertices A(0, 2), B(x, 0), and C(0, -2). Determine the value of x that makes triangle ABC a regular triangle.
Jobisdone [24]

Answer:

x =  \sqrt{12 }  = 2 \sqrt{3}  \: or \\ x =   -  \sqrt{12}  =  - 2 \sqrt{3}

Step-by-step explanation:

In order for the triangle to be a right one we need every side to be of the same length. see the photo for furyher explanation.

5 0
3 years ago
Write 0.9 as a fraction
Grace [21]

Answer:

The answer is 9/10

Step-by-step explanation:

it's 9/10

5 0
3 years ago
Read 2 more answers
A bag contains yellow marbles and blue marbles, 73 in total. The number of yellow marbles is 7 more than 5 times the number of b
Roman55 [17]

Answer:

number of yellow marbles=62.

Step-by-step explanation:

It is given that in a bag there are yellow marbles and blue marbles and the total number of marbles=73.

Let the number of Blue marbles=x, then according to the question, number of yellow marbles will be =5x+7.

Now, Total number of marbles= number of yellow marbles+number of blue marbles.

⇒73=x+5x+7

⇒73-7=6x

⇒66=6x

⇒x=11

Therefore, numberof blue marbles=x=11 and

number of yellow marbles=5x+7=5(11)+7=55+7=62.

8 0
4 years ago
What is 2.664 rounded to the nearest whole number?
irakobra [83]

Answer:

3

Step-by-step explanation:

the rule is if its .5 or higher than you round up. since the decimal in 2.664 is .664, you'd round up to make 3

7 0
3 years ago
Regis leans a 10-foot ladder against a wall. The base of the ladder makes a 65 angle with the ground.
hammer [34]

The distance, In feet, from the base of the ladder to the base of the wall is 4.2 ft.

He needs to move the ladder 0.1 ft closer to the base of the building.

The situation forms a right angle triangle.

<h3>Right angle triangle</h3>

Right angle triangle has one of its angles as 90 degrees. The sides and angle can be found using trigonometric ratios.

The length of the ladder is the hypotenuse of the triangle formed. Therefore, the distance, In feet, from the base of the ladder to the base of the wall can be calculated as follows;

cos 65° = adjacent / hypotenuse

cos 65° = d / 10

d = 10 × 0.42261826174

d = 4.22618261741

d = 4.2 ft

She needs to move the ladder so it reached a window 9.6 feet above the ground. Therefore, the distance from the base of the ladder and the wall is as follows;

cos 65 = d / 9.6

d = 9.6 × 0.42261826174

d = 4.05696

d = 4.1

Therefore, he needs to move the ladder 0.1 ft closer to the building.

learn more on right angle triangle here: brainly.com/question/14988069

8 0
3 years ago
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