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2 years ago

I need help!

Mathematics

1 answer:

marta [7]2 years ago

3 0

Answer:

Area: 45 Perimeter: 2,025

Step-by-step explanation:

Base= 5

Height= 9

Area: 5 x 9 = 45

Perimeter= base times base times height times height

Perimeter: 5 x 5 x 9 x 9 = 2,025

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Solve in terms of d. <br> 6dh = 2y

sukhopar [10]

Answer:

d = $\frac{2y}{6h}$

Step-by-step explanation:

Given

6dh = 2y ( isolate d by dividing both sides by 6h )

d = $\frac{2y}{6h}$

7 0

3 years ago

Simplify<br> -5(2x+4)-3(x-6)

Bond [772]

Answer:

x=6

Step-by-step explanation:

1 Add 44 to both sides.

2x=8+42x=8+4

2 Simplify 8+48+4 to 1212.

2x=122x=12

3 Divide both sides by 22.

x=\frac{12}{2}x=

4 Simplify \frac{12}{2}

to 66.

x=6x=6

4 0

3 years ago

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mrs. Williams uses the following recipe for crispy rice treats. She decided to make 2/3 of the recipe. 2 cups of melted butter,

Ilya [14]

To find how much she needs of every ingredient, multiply every ingredient by 2/3.

Butter: 2•2/3=4/3=1&1/3 cups
Marshmallows: 24•2/3=16 oz
Cereal: 13•2/3= 26/3=8&2/3 cups

3 0

3 years ago

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The base of a triangle is one third of its height. If the area of the triangle is 24 square inches, what are the base and height

Burka [1]

Answer:

D. 4in, 12in

Step-by-step explanation:

Area of triangle = 24in²

Unknown:

Base and height of the triangle = ?

Solution:

The area of a triangle = $\frac{1}{2}$ x base x height

From the problem,

base = $\frac{1}{3}$ x height

let the base = b

height = h

b = $\frac{1}{3}$ h

h = 3b

Input into the formula of area;

24 = $\frac{1}{2}$ x b x 3b

Mulitply through by 2;

48 = 3b²

b² = 16

b = √16 = 4

So, h = 3b= 3 x 4 = 12in

6 0

3 years ago

If x=9 and y=−3, evaluate the following expression:20−5y+2x

pentagon [3]

Answer:

Step-by-step explanation:

20-5y+2x

20-5(-3)+2(9)

20--15+18

cancel out the negative signs

20+15+18

=53

4 0

3 years ago

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