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3 years ago

Solve each proportion for the variable.

Mathematics

1 answer:

zysi [14]3 years ago

3 0

Answer:

12is x=10

14is y= -5/4

16 is z= 1/3

Step-by-step explanation:

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Graph the equations to solve the system y= -1/2x + 5 and y+ 1/2x +6

Elena L [17]

Answer:

(-1, 5.5)

Step-by-step explanation:

There are a number of techniques that can be used to solve a system of linear equations. Some of these techniques include;

Elimination method

Substitution method

Graphical method

In the graphical approach, we simply graph the linear equations on a cartesian plane. The solution to the system of equations is the co-ordinate of the point of intersection of the equations.

I use desmos graphing tool to graph the two equations;

y = -1/2x + 5

y = 1/2x + 6

From the attachment below, we can see that the lines intersect at (-1, 5.5)

Therefore, the solution to the given system of equations is (-1, 5.5)

4 0

3 years ago

6. A person mailing postcards earns a fixed amount for each postcard he mails,

Svetradugi [14.3K]

Answer:

If he worked 5 hours and his rate is $14/hr, then he earned a total of $70.He mailed 300 postcard, so each postcard mailed is $0.2333

Step-by-step explanation:

mark me brainliest!!

4 0

2 years ago

Read 2 more answers

Select yes or no to indicate whether a zero must be written in the dividend to find the quotient

neonofarm [45]

Answer:

2.25 divided by 0.6 : Yes and 5.2 divided by 8, 3.63 divided by 3, 71.1 divided by 9 : No

Step-by-step explanation:

We have that when two numbers are divided, they can be written in the form $\frac{p}{q}$ , where p is the dividend and q is the divisor.

Now, when we divide 5.2 by 8, we can write $\frac{5.2}{8}$

Also, the division 3.63 by 3, can be written as $\frac{3.63}{3}$ = 1.21

Further, when we divide 71.1 by 3, we can write $\frac{71.1}{3}$ = 23.7

We can see that above divisions are easy divisions and do not require to write any type of 0 in the numerator.

Moreover, when we divide 2.25 by 0.6, we can write $\frac{2.25}{0.6}$ = $\frac{2.25\times 10}{6}$ .

So, we get that in the last division, we need to write a zero in order to multiply the numerator with 10 for easy division.

Hence, 2.25 divided by 0.6 : Yes and 5.2 divided by 8, 3.63 divided by 3, 71.1 divided by 9 : No

3 0

3 years ago

Which of these best explains the next step to simplify this expression? 3y−45=35y−4 Question 22 options: Make the –4 exponent in

NISA [10]

The value of y from the give expression is 1

<h3>Expressions and equations</h3>

Give the following expression

$\frac{3y^{-4}}{5} = \frac{3}{5y^{-4}}$

Cross multiply the given expression

$3y^{-4}\times 5y^{-4}= 5 \times 3\\15y^{-8}=15\\$

Divide both sides by 15

$y^{-8}=1\\\frac{1}{y^8} =1\\y^8=1\\y=1$

Hence the value of y from the given expression is 1

Learn more on indices here: brainly.com/question/10339517

3 0

3 years ago

NEED HELP URGENTLY!!!!!

Svet_ta [14]

substitute each point into the inequality and check validity of solution

A (4, 4)

4 ≤ 16 - 12 + 2 ⇒ 4 ≤ 6 → True hence valid solution

B (3, 3 )

3 ≤ 9 - 9 + 2 ⇒ 3 ≤ 2 → False hence not valid

C (1, 1 )

1 ≤ 1 - 3 + 2 ⇒ 1 ≤ 0 → False hence not valid

D (2, 2 )

2 ≤ 4 - 6 + 2 ⇒ 2 ≤ 0 → False hence not valid

7 0

4 years ago

Read 2 more answers