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4vir4ik [10]
3 years ago
14

Solve the equation. -(7-4x)=9​

Mathematics
2 answers:
Ket [755]3 years ago
7 0

Answer:

x=4

Step-by-step explanation:

-(7-4x)=9

-7+4x=9

4x=16

x=4

diamong [38]3 years ago
3 0

Answer:

x=4

Step-by-step explanation:

So we have the equation:

-(7-4x)=9

Let's divide both sides by -1. This cancels out the negative on the left:

7-4x=-9

Subtract 7 from both sides. The left cancels:

-4x=-16

Divide both sides by -4. All the negatives will cancel:

x=4

And we're done!

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Carol is solving the inequality 3 have?<br> There are infinitely many solutions.<br> There are only two solutions.<br> There is
schepotkina [342]

Answer:

There are infinitely many solutions

Step-by-step explanation:

Firstly, I need to change f to x as the system won’t accept the word f

Let’s take a look at the question;

3 is less than x

The domain of our answer lies in the the range of values where we have numbers that are greater than 3

This means we can rewrite our inequality as x is greater than 3

Now, simply because we have an infinite amount of numbers which are greater than 3 of which x can take any of the values, we can conclude that the number of values we have for x are infinite and does not end

This makes us have infinitely many solutions for the value of x

6 0
3 years ago
Find the equation for the trend line through the points (0, 11) and (100, 33). Then use it to predict the number of baskets Romy
sleet_krkn [62]

Answer:

28 baskets

Step-by-step explanation:

The equation for a linear trend line is given by:

y = mx + b, where y and x are variables, m is the slope of the line and b is the y intercept (that is value of y when x is zero).

The equation of a line passing through two points (x_1,y_1)\ and\ (x_2,y_2) is:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

y represent the number of baskets made and x represents the time take. Given that the line passes through the points  (0, 11) and (100, 33), hence:

y-11=\frac{33-11}{100-0}(x-0)\\\\y-11=\frac{11}{50}x\\\\y=  \frac{11}{50}x+11

The number of baskets Romy would make after practicing for 80 minutes (x = 80) is:

y=\frac{11}{50}x+11\\\\y=\frac{11}{50}(80)+11  \\\\y=17.6+11\\\\y=28.6\\\\Therefore\ y\ =\ 28\ baskets

5 0
3 years ago
Rewrite 3/4x - 5 = 7/12 so it does not have fractions .
katrin [286]

Answer:

Answer

Step-by-step explanation:

0.75x -5 = 0.583333333333...

4 0
3 years ago
Read 2 more answers
The total mass of Abdul and his baby brother is 15.25kg . The mass of Abdul and his father is 72.25kg . The mass of Abdul's fath
Helen [10]
A+b=15.25

a+f=72.25, since f=13b

a+13b=72.25  so now we have two equation in two variables...

a+13b=72.25 and a+b=15.25  so we can say:

(a+13b=72.25)-13(a+b=15.25)

a+13b-13a-13b=72.25-198.25

-12a=-126

a=10.5 kg

So Abdul's mass is 10.5 kilograms.
  
8 0
3 years ago
If a line has a slope of 2/3, will the following points
snow_lady [41]

Answer:

yes

Step-by-step explanation:

y2-y1/x2-x1

12-10/5-2

=2/3

5 0
3 years ago
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