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2 years ago

Add the quotient of 9 and 7 to d

Mathematics

1 answer:

Otrada [13]2 years ago

8 0

Answer:

9 ÷ 7 + d.

Step-by-step explanation:

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Novay_Z [31]

Answer:

x + 2(2x-4) = 10

Step-by-step explanation:

Here in this question, we want to select which is the correct answer if we substitute for the value of y in the second equation, using the first.

In the first, we have;

y = 2x -4

Now, let’s input this value of y into the second equation.

By direct substitution, what we have is the following;

x + 2y = 10

—-> x + 2(2x -4) = 10

8 0

3 years ago

What is the slope of the line that is perpendicular to the line that passes through (-2, 7) and (4, 9)? Type a numerical answer

kodGreya [7K]

Answer:

Therefore $m_{2}$ = -3.

Step-by-step explanation:

i) let us say the slope of the line passing through (-2,7) and (4,9) is $m_{1}$ .

ii) to find the slope of the line passing through two points ( $x_{1}$ , $y_{1}$ ) and ( $x_{2}$ , $y_{2}$ ) we use the formula m = $\dfrac{y_{2} - y_{1} }{x_{2} - x_{1} }$ . Therefore we can say that $m_{1}$ = $\dfrac{9 - 7}{4 - (-2)}$ = $\dfrac{1}{3}$ .

iii) let us say the slope of the perpendicular line to the line passing through (-2,7) and (4,9) is $m_{2}$

iv) from the formula for the slopes of a line and the line perpendicular to it which is given by $m_{1}$ × $m_{2}$ = -1, therefore $m_{2}$ = -1 ÷ $m_{1}$ = -3. Therefore $m_{2}$ = -3

6 0

3 years ago

Which is NOT an undefined term in geometry

Anna71 [15]

There are three words in geometry that are not formally defined. These three undefined terms are point, line and plane.

3 0

3 years ago

Read 2 more answers

The frequency with which a cricket chirps varies directly with the temperature. If the cricket chirps 100 times per minute in 80

Karo-lina-s [1.5K]

The answer is: D) 115

The explanation is shown below:

1. You have that the frequency with which a cricket chirps varies directly with the temperature, which you can express it as following:

$y=kx$

Where $y$ is the frequency with which a cricket chirps, $x$ is the temperature and $k$ is the constant of proportionality.

2. If the cricket chirps 100 times per minute in 80° weather, you can calculate $k$ as below:

$k=\frac{100}{80}=1.25$

3. Therefore, the frequency in 92° weather is:

$y=1.25x\\y=(1.25)(92)\\y=115$

3 0

3 years ago

Brandon enters bike races.He bikes 8 1/2 miles every 1/2 hour. complete a table to find how far Brandon bikes for each time inte

MissTica

12. Since there is no table given I will assume that what you want me to do is to show that Unit rate of Brandon’s biking. SO here are the data that we need: => 8 and ½ miles = 8.5 miles => ½ hour = .5 hours or 30 minutes Now, let’s solve for the unit rate => SO in every 30 minutes he bikes around 8.5 miles => Since 1 hour is equals to 30 minutes, simply multiply 8.5 by 2 => 8.5 * 2 = 17miles => 17 miles / hour

4 0

3 years ago

Read 2 more answers