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scZoUnD [109]
2 years ago
6

PLEASE help me i really apreacatie if you show your work both in numbers and a sentence since i dont know how to explaning tysm

once agin bless your heart

Mathematics
2 answers:
lesya [120]2 years ago
8 0

Answer:

No solution

Step-by-step explanation:

collect like terms,

8x = 2(4x - 5) -2

Then distribute to throughout the parentheses,

8x = 8x - 10 - 2

Cancel equal terms on both sides of the equation,

0 = -10 - 2

Calculate the difference,

0 = -12

This statement is false because zero does equivalate to -12.

aleksklad [387]2 years ago
5 0

Answer:

No Solution

Step-by-step explanation:

OK first just remember PEMDAS which stands for

Parentheses Exponents Multiplication Division Addition Subtraction

so we do these things in order from left to right.

first i see some parentheses so lets take care of that, pay attention to this part

2(4x - 5)

lets do some distribution, we multiply the numbers in the parentheses by the number thats right outside of the parentheses

this becomes

8x-10

so now we have...

5x+3x=8x-10-2

it is pretty easy from this point on

just add like terms. 5x plus 3x equals 8x. -10 - 2 equals -12.

8x=8x-12

now we have to do opposite calculations on both sides. for example, lets take the 8x to the right of the equal sign, and subtract 8x from both sides.

0=-12

is this true? does this make sense? NO! so the answer is No Solution.

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A cylinder has a radius of 40 ft and a height of 17 ft. What is the exact surface area of the cylinder?
Georgia [21]

we know that

surface area of the cylinder=2*{area of the base}+perimeter of base*height

area of the base=pi*r²

r=40 ft

Area of base=pi*40²

Area of the base=1600*pi ft²


Perimeter of the base=2*pi*r

Perimeter of the base=2*pi*40

Perimeter of the base=80*pi ft


surface area of the cylinder=2*1600*pi+80*pi*17

surface area=4560*pi ft²


therefore

the answer is the option

4560π ft2

8 0
3 years ago
Read 2 more answers
the science teacher has 7 packs of seeds and 36 students if the student should each plant the same number seeds how many each st
Masteriza [31]

Answer:

each student would plant 252 seeds

4 0
2 years ago
There are a total of 18 frocks. If the ratio of purple frocks to white frocks is 2 to 4, how many of them are white?
Oksana_A [137]
I think it will be 2:4. 2X9=18 so u × 4×9=36 so its 18 to 36
7 0
2 years ago
8. Solve the system using elimination.<br> 3x - 4y = 9<br> - 3x + 2y = 9
olga nikolaevna [1]

Answer:

3x−4y=9 −3x+2y=9

Add these equations to eliminate x: −2y=18

Then solve−2y=18

for y: −2y=18 −2y −2 = 18 −2 (Divide both sides by -2)

y=−9

Now that we've found y let's plug it back in to solve for x.

Write down an original equation: 3x−4y=9

Substitute−9for y in 3x−4y=9: 3x−(4)(−9)=9

3x+36=9(Simplify both sides of the equation)

3x+36+−36=9+−36(Add -36 to both sides)

3x=−27 3x 3 = −27 3 (Divide both sides by 3) x=−9

Answer: x=−9 and y=−9

Hope This Helps!!!

4 0
2 years ago
Pierre uses 30 grams of chocolate to make
Travka [436]

Pierre can make 3 liters of chocolate sauce from 450 grams of chocolate.

Step-by-step explanation:

Given,

Chocolate used to make 200 ml of chocolate sauce = 30 grams

Ratio of chocolate to milliliters of chocolate sauce = 30:200

Let,

x be the milliliters of sauce made from 450 grams of chocolate

Ratio of chocolate to ml of sauce = x:450

Using proportion;

Ratio of chocolate to ml of sauce:: ratio of chocolate to ml of sauce

30:200::450:x

Product of extreme = Product of mean

30*x=200*450\\30x=90000

Dividing both sides by 30

\frac{30x}{30}=\frac{90000}{30}\\x=3000

450 grams of chocolate will make 3000 milliliters of chocolate sauce.

We will convert this in liters.

1 liter = 1000 ml

3000 ml = \frac{3000}{1000} = 3 liters

Pierre can make 3 liters of chocolate sauce from 450 grams of chocolate.

Keywords: ratio, proportion

Learn more about proportion at:

  • brainly.com/question/1414350
  • brainly.com/question/1418853

#LearnwithBrainly

3 0
3 years ago
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