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Nina [5.8K]
3 years ago
11

HELP ME PLEASE The student's in Roberto's school are painting a mural that will be 8 feet by 15 feet. First they make a scale dr

awing of the mural with a scale of 2 feet:5 feet. What are the length and width of the scale drawing in feet
Mathematics
1 answer:
DochEvi [55]3 years ago
3 0

Answer:

Length = 3.2feets ; width = 6feets

Step-by-step explanation:

Given the following :

Actual dimension of Mural:

8feets by 15feets

Scale drawing ratio of Mural :

2feets : 5feets

This means :

2 Feets on paper equals 5 Feets of actual drawing:

Therefore, with actual dimension of Length = 8feets ;

Length of scale drawing = (2/5) * 8 = 3.2feets

Actual dimension of width 15feets ;

Width of scale drawing = (2/5) * 15 = 6 Feets

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A store is having a sale on almonds and jelly beans. For 3 pounds of almonds and 5 pounds of jelly beans, the total cost is $19
yaroslaw [1]

Answer:

Almond: $7/4 per pound

Jelly Bean: $ 11/4 per pound

Step-by-step explanation:

A: almond

J: jelly bean

3A + 5J = 19 .... multiply 9 each side

27A + 45J = 171 .....(1)

9A + 7J = 35 .....multiply 3 each side

27A + 21J = 105 ....(2)

(1) - (2)    24J = 66

J = 66/24 = 11/4

3A + 5 x 11/4 = 19

3A = 21 / 4

A = 7/4

6 0
3 years ago
Rational algebraic expression is an expression that is the ratio of two​
ikadub [295]

Answer:

A rational expression is a ratio of two polynomials. The domain of a rational expression is all real numbers except those that make the denominator equal to zero.

Step-by-step explanation:

4 0
3 years ago
Three numbers are in the ratio 2:5:7 and their lcm is 490 find the square root of the largest number
ohaa [14]

Answer:

49

Step-by-step explanation:

The ratio of three numbers = 2:5:7

Then the numbers are 2x,5x and 7x

Given that the LCM of these numbers  = 490

LCM of 2x,5x,7x is 2×5×7×x = 70x

Then, we have 70x = 490

x  = 7

Hence, the numbers are 14, 35 and 49

Largest number = 49

∴The square root of the largest number = 7

5 0
1 year ago
-3x^2-168 solve the quadratic equation
vlabodo [156]

Answer:

x=+2i\sqrt{14}\ \ \,x=-2i\sqrt{14}

Step-by-step explanation:

-3x^2-168

The first step in solving this equation is the factor, remove a factor that both the quadratic and constant term have in common. In this case, such a term would be (-3),

-3(x^2+56)

Now set the equation equal to zero so that one can use the zero product property. The zero product property states that any number times zero equals zero.

-3(x^2+56)=0

Solve, use inverse operations,

x^2+56=0

x^2=-56

One cannot take the square root of a negative number and get a real result, thus the result is an imaginary number.

x=\sqrt{-56}

Simplify, remove whole factors from under the radical,

x=+-2i\sqrt{14}

6 0
2 years ago
Write the mixed number -2 and 7/18 as a decimal
Anna71 [15]

Answer:

5.142857

Step-by-step explanation:

6 0
3 years ago
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