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2 years ago

What is z+6+z-11=z+49

Mathematics

1 answer:

aleksklad [387]2 years ago

4 0

Answer:

z=18

Step-by-step explanation:

z+6+z-11=z+49

2z-5=z+49

3z-5=49

3z=54

z=18

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Why is the answer B?

Radda [10]

Remark

Whatever the original price, he gets 70% in the first instance.

He gets 80% in the second instance.

He gets 90% in the third instance

His total income is 240 dollars.

Let the original price be x

Equation

70%x + 80%x +90%x = 240

70% = 0.7 ; 80% = 0.8 ;90% = 0.9

Solution

0.7x + 0.8x + 0.9x = 240 Take out x as a common factor and add the decimals.

x (0.7 + 0.8 + 0.9) = 240

2.4x = 240 Divide both sides by 2.4

x = 240/2.4

x = 100

So the watches should have brought in 3*100 = 300 dollars.

He only brought in 240 dollars.

He lost 300 - 240 = 60 dollars.

The answer is B.

7 0

2 years ago

Simple geometry please help Find KL. Round to the nearest hundredth.

vivado [14]

Answer:

KL ≈ 1.94

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos48° = $\frac{adjacent}{hypotenuse}$ = $\frac{JL}{KL}$ = $\frac{1.3}{KL}$ ( multiply both sides by KL )

KL × cos48° = 1.3 ( divide both sides by cos48° )

KL = $\frac{1.3}{cos48}$ ≈ 1.94 ( to the nearest hundredth )

6 0

3 years ago

4/28 - [10 + (3 + 1) x 2]]

Sholpan [36]

Answer:

$\frac{4}{28}-\left(10+\left(3+1\right)x\cdot \:2\right)=-8x-\frac{69}{7}$

8 0

2 years ago

The ratio 21:28 in simplest form is 4:3 3:4 3:5

krek1111 [17]

The ratio 21:28 in it's simplest form is 3:4

4 0

3 years ago

Read 2 more answers

6. The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to

d1i1m1o1n [39]

Answer: 5.18 pounds

Step-by-step explanation:

Given: The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas.

Let 'p' denote the pressure exerted on the walls and 't' denotes temperature of the gas.

Then the equation is given by :-

$p=ct$ , where c is the proportionality constant.

Also, the pressure is 6 pounds per square inch when the temperature is 440° F.

$\Rightarrow\ 6=440c\\\\\Rightarrow\ c=\dfrac{6}{440}=\dfrac{3}{220}$

Then, the final equation to calculate pressure becomes :-

$p=\dfrac{3}{220}t$

Now, the pressure exerted when the temperature of the gas is 380°F is given by :-

$p=\dfrac{3}{220}\times380=5.181818\approx5.18\text{ pounds}$

3 0

2 years ago