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3 years ago

Please help any one this is hard for me Thank you

Mathematics

1 answer:

steposvetlana [31]3 years ago

6 0

So the formula I use is S = L + 2B
Surface Area = Lateral Area + 2(Base)
In this case, it would be
Surface Area = Lateral Area + Base, since there is only one base
L= Perimeter(height)
L= 4(3 times 5)
----------------
2
L= 4(15)
------
2
L =60/2
L=30
S= 30 + B
B = 3 times 3 = 9
S= 39

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What is 4[2(21-17)+3]

vagabundo [1.1K]

To solve this problem, we should understand how order of operations works. Perhaps the best way to show you this would be solving the problem with all of the work clearly labeled?

=4[2(21-17)+3] Original Problem
=4[2(4)+3] Solved the Parentheses
=4[8+3] Multiplied the 2 and 4
=4[11] Added the 8 and 3
=44 Multiplied the 4 and 11

An easy way to remember this is PEMDAS, which is an acronym for Parentheses, Exponents, Multiplication/Division, and Addition/Subtraction. Although it will not apply in this scenario (because we have brackets), it will come in handy for many others like this.

Using all of the information above, we can conclude that this expression equals 4.

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3 years ago

Kamoira bought 8 pizzas for $131.36. Each pizza cost the same amount. What was the cost of each pizza in dollars and cents?

Veseljchak [2.6K]

Step-by-step explanation:

so, you don't know what a division is for ?

it is to ask things like "how often does one number fit into another number", or "how big will each piece be, if I split something into a certain number of equally sized pieces ?".

this is what we need here.

8 pizzas for $131.36. and each pizza costs the same. you see how that connects to what I just described above ?

to find how much each pizza cost, we need to divide the total price by 8, to find the size (= here the price) of each of the equally big parts of the total price.

131.36 / 8 = $16.42

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2 years ago

Type the correct answer in each box. Use numerals instead of words. Consider the equation below. x/h+1=-2 The value of x in term

arlik [135]

Answer:

x = -3h

x = -12

Step-by-step explanation:

Given equation is $\frac{x}{h}+1=-2$

To find the value of x in terms of h we will solve the expression to isolate x on one side of the equation.

by subtracting 1 from both the sides of the equation,

$\frac{x}{h}+1-1=-2-1$

$\frac{x}{h}=-3$

Multiplying 'h' on both the sides of the equation,

$(\frac{x}{h})\times h = (-3)h$

x = -3h

If h = 4,

x = (-3)(4)

x = -12

4 0

3 years ago

Write an equation in slope intercept form for a line that goes through the point (-9,4) and is perpendicular to line y=-3x-2

nadezda [96]

Answer:

y = 1/3x + 7

Step-by-step explanation:

Perpendicular slope is opposite reciprocal so it will be 1/3

Use the slope and point given and plug into y = mx + b

4 = 1/3 (-9) + b

4 = -3 + b

7 = b

write new equation with new b and m

y = 1/3x + 7

3 0

3 years ago

You've received an invoice for $3,000 with terms of 3/10, 1/20, n/30. How much will you have to pay if you pay the bill in 12 da

Veronika [31]

Hi there

3/10 means if you pay the bill within 10 days you will get a discount for 3%

1/20 means if you pay the bill within 20 days you will get a for 1%

N/30 means if you pay the bill within 30 you will not get any discount

you paid the bill within 12 days soso you will get a discount for 1%

3,000−3,000×0.01
=2,970

Hope it helps

4 0

3 years ago