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Kay [80]
3 years ago
5

Question in picture help and explain pls

Mathematics
1 answer:
Akimi4 [234]3 years ago
7 0

The question is:15b+m-4b

we have same variables that are 15b and -4b so we can calculate it.Okay first let's calculate the like terms 15b-4b i.e 11b and the +m remains the same so the answer is:11b+m

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True or false, there is no solution to the systems of inequalities shown below
miss Akunina [59]
False 
Because if you plot a graph to both the equation as i have attached the image.. you can see there can be multiple solution to the above system of inequalities. 

8 0
3 years ago
Read 2 more answers
Find an equation of the line described (3,7) (0,0)
Colt1911 [192]
The formula of the line is
y=mx + b
The likes goes through the point (0,0)
that means that y-int = 0, b=0
y=mx
So we need to find only slope.

m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}} =  \frac{7-0}{3-0} = \frac{7}{3} 



So, y= \frac{7}{3} x



3 0
3 years ago
NEED HELP FAST‼️‼️
ch4aika [34]

Answer:

Step-by-step explanation:

A ' = (-2, -3)

B ' = (0, -3)

C ' = (-1, 1)

=======================================================

Explanation:

To apply an x axis reflection, we simply change the sign of the y coordinate from positive to negative, or vice versa. The x coordinate stays as is.

Algebraically, the reflection rule used can be written as

Applying this rule to the three given points will mean....

Point A = (-2, 3) becomes A ' = (-2, -3)

Point B = (0, 3) becomes B ' = (0, -3)

Point C = (-1, -1) becomes C ' = (-1, 1)

The diagram is provided below.

Side note: Any points on the x axis will stay where they are. That isn't the case here, but its for any future problem where it may come up. This only applies to x axis reflections.

4 0
3 years ago
Will mark brainliest if you show ur work
Tanzania [10]

Answer:

\boxed{\bold{One \ Solution}}

Step-by-step explanation:

  • <u>Solve equation to find answer(s)</u>

<u></u>

Combine: 6z - 3z = 3z

\bold{3z-7=-2+3}

Add: -2 + 3 = 1

\bold{3z-7=1}

Add 7 to both sides:

\bold{3z-7+7=1+7}

Simplify:

\bold{3z=8}

Divide both sides by 3:

\bold{\frac{3z}{3}=\frac{8}{3}}

Simplify:

\bold{z=\frac{8}{3}}

- M -

8 0
3 years ago
A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
julia-pushkina [17]

By assuming the standard deviation of population 2.2 the confidence interval is 8.67 toys,8.94 toys.

Given sample size of 1492 children,99% confidence interval , sample mean of 8.8, population standard deviation=2.2.

This type of problems can be solved through z test and in z test we have to first find the z score and then p value from normal distribution table.

First we have to find the value of α which can be calculated as  under:

α=(1-0.99)/2=0.005

p=1-0.005=0.995

corresponding z value will be 2.575 for p=0.995 .

Margin of error=z*x/d

where x is mean and d is standard deviation.

M=2.575*2.2/\sqrt{1492}

=0.14

So the lower value will be x-M

=8.8-0.14

=8.66

=8.67 ( after rounding)

The upper value will be x+M

=8.8+0.14

=8.94

Hence the confidence interval will be 8.67 toys and 8.94 toys.

Learn more about z test at brainly.com/question/14453510

#SPJ4

8 0
2 years ago
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