Alex's work for the following quiz problem is as follows: Is Alex correct? if it's incorrect, what is the correct solution?

Answer:

Step-by-step explanation:

(x+7)/2= -8

x + 7 = -16

x = -9

(y + 1)/2 = -9

y + 1 = -18

y = -19

(-9, -19)

Answer:

-3.72

Step-by-step explanation:

5.58+-9

-9+5=-4

-4+.28=-3.72

Answer:

yesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyesyes lol

Step-by-step explanation:

Answer:

yes haha is your answer

Answer:

400

Step-by-step explanation:

354>=350 and thus is rounded upwards to 400.

Answer:

it is 400

Step-by-step explanation:

IF you round to the nearest hundred, then you are going to up or down by the hundred. Since 54 is closer to 100, the number 354 goes to 400.

Answer:

The square root of 32 by 3 is 5.657

Step-by-step explanation:

Answer:

Step-by-step explanation:

Function 'f' represents the number of miles (y-values) covered by the helicopter in 'x' (x-values) minutes.

f(x) = 40 - 2x

For x = 0,

f(x) = 40 miles

For f(x) = 0,

0 = 40 - 2x

x = 20 minutes

This shows that helicopter traveled 40 miles in 20 minutes.

Similarly, given graph shows distance covered by the jet on y-axis and duration of flight on x-axis.

For x = 0,

f(x) = 500 miles

For f(x) = 0,

x = 100 minutes

Commercial jet traveled 500 miles in 100 minutes.

The total distance and time taken for each flight are illustrations of intercepts.

We have:

[tex]x \to[/tex] minutes

[tex]f(x) \to[/tex] miles

Helicopter

[tex]f(x) = 40 - 2x[/tex]

Set f(x) to 0, to calculate the x-intercept

[tex]0 = 40 - 2x[/tex]

Collect like terms

[tex]2x = 40[/tex]

Divide by 2

[tex]x =20[/tex]

Set x to 0, to calculate the y intercept

[tex]f(x) = 40 - 2x[/tex]

[tex]f(0) = 40 - 2 \times 0[/tex]

[tex]f(0) = 40[/tex]

This means that, the helicopter traveled 40 miles in 20 minutes

Commercial Jet

From the graph, the intercepts are:

[tex](x_1,y_1) = (100,0)[/tex] --- the x-intercept

[tex](x_2,y_2) = (0,500)[/tex] --- the y-intercept

This means that, the commercial jet traveled 500 miles in 100 minutes

Read more about intercepts at:

https://brainly.com/question/3334417

Answer:

10

Step-by-step explanation:

No of coffee mugs = m

No of water glasses = g

g = m + 6

g + m = 26

m + 6 + m = 26

m + m = 26 - 6

2m = 20

2m/2 = 20/2

m = 10

Answer:

(1,15)

Step-by-step explanation:

first, you look at the coordinates

then, you think how far are the 1st number away from the 2nd

finally, you'd get the answer of 15 there you have your answer

Answer:

12x

Step-by-step explanation:

8 uniforms= 96 yards

15 uniforms= 180 yards

Answer:

5x-3= 2x

4x + 6= 10x

Step-by-step explanation:

The first awnser is right because the x    doesnt have a value therefore you keep the x but you still do the problem.

the second one is right because the same  explanation for the first question but its addition and if the x had a value then you would multiply the 4 and the value of the x first then you would do the addition.

Answer:

1. May 1790  2. someone broke the first copyright law  3. copyright  4. novel

Step-by-step explanation:

Answer:

-3x^2+2

Step-by-step explanation:

(5x - 3x^2) - (5x -2)

Distribute the minus signs

(5x - 3x^2) - 5x +2

Combine like terms

-3x^2 +5x-5x+2

-3x^2+2

Answer:

10

Step-by-step explanation:

Mean = Sum of all data [tex]\div[/tex] Number of data

Let x be the other number.

[tex]30 =\frac{12+50+48+x}{4}[/tex]

Multiply both sides by 4:

[tex]\frac{4\left(12+50+48+x\right)}{4}=30* \:4[/tex]

[tex]x+110=120[/tex]

Subtract 110 from both sides:

[tex]x+110-110=120-110[/tex]

[tex]x=10[/tex]

Answer:

B:10

Step-by-step explanation:

Set up the equation

(12+50+48+x)/4=30

Add like terms

(110+x)/4=30

now multiply both sides by 4

(110+x)/4=30

4              4

110+x=120

Now subtract  110 from both sides

x=10

Hope this helps! Plz award Brainliest : )

Answer:

well if you have 10 and you subtract 2 you get 8 it really simple  

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Divide 9 by 1.5 to find the scale factor:

9/1.5

= 6

So, the scale factor from the website to real life is 6

The required concept that is most useful when explaining the effect of a rotation is the angle. Option A is correct.

Given that,
To determine that which geometric concept is most useful when explaining the effect of a rotation on a segment.

Geometry is the mathematical study of figures and shapes.

here,
When it is to rotate the main geometric concept that must explain is the angle, for the rotation, it must me known how much angle the rotation is initiated.

Thus, the required concept that is most useful when explaining the effect of a rotation is the angle. Option A is correct.

Learn more about geometry here:

https://brainly.com/question/22081359

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Answer:

31,700

Step-by-step explanation:

10 to the 4th is 10,000, and 10,000 times 3.17 is 31,700

Answer:

31700

Since the exponent of the scientific notation is positive, move the decimal point  

4

places to the right.

Answer:

Since BD bisects Angle ABC, Angle ABD = Angle DBC

[tex]3x+6=7x-18[/tex]

Subtract 6 from both sides:

[tex]3x+6-6=7x-18-6[/tex]

[tex]3x=7x-24[/tex]

Subtract 7x from both sides:

[tex]3x-7x=7x-24-7x[/tex]

[tex]-4x=-24[/tex]

Divide both sides by -4:

[tex]\frac{-4x}{-4}=\frac{-24}{-4}[/tex]

[tex]x=6[/tex]

Angle [tex]ABD=3x+6=3(6)+6=18+6=24[/tex]

Angle [tex]CBD=7x-18=7(6)-18=42-18=24[/tex]

Angle [tex]ABC=ABD+CBD=24+24=48[/tex]

Answer:

m<ABD= 6

m<CBD= -18

m<ABC= -108

Step-by-step explanation:

I think the answer is $238.

71 x $3 = $213

2 + 3 = 5

5 x $5 = $25

$213 + $25 = $238

I hope this helps.

The total cost of ticket for a group of 71 students, 3 parents, and 2 teachers to attend the museum is $360.

An expression is a number, or a variable, or a combination of numbers and variables and operation symbols.

Now it is given that,

Cost of ticket for adult = $5.00

Cost of ticket for students = $3.00

Now, Total number of students = 71

Number of parents = 3

Number of teachers = 2

So, total adults = 3 + 2 = 5

Thus, Total cost of tickets for students = 71*5 = $355

and, Total cost of tickets for adults = 5*3 = 1$5

Therefore,

Total cost of ticket for a group of 71 students, 3 parents, and 2 teachers to attend the museum = Total cost of tickets for students + Total cost of tickets for adults

⇒ Total cost of ticket for a group = $355 + $5

⇒ Total cost of ticket for a group = $360

Thus, the total cost of ticket for a group of 71 students, 3 parents, and 2 teachers to attend the museum is $360.

To learn more about expressions :

brainly.com/question/21798279

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Answer:

3/8

Step-by-step explanation:

1- 1/4 +(1/2 x 3/4)

1. subtract 1/4 to get 3/4 (how much time she has left in class).

2. multiply 3/4 by 1/2 to find how much half of 3/4 is.

3. Half of 3/4 is 3/8 so that's how much time she spent on the balance beam.

Answer:

otatoP

Step-by-step explanation:

Answer:

X=-9

Step-by-step explanation:

you can only choose 4 unique ways Step-by-step explanation:

Answer: 1st one

Step-by-step explanation:

Answer:

7x^2 + 7

Step-by-step explanation:

So you collect the "like-terms". 3x^2 is not the same as 7, however, 4x^2 has the same term as 3x^2, so you add those together and then join the 7 in the expression.

Hope that explanation makes sense

Answer:

[tex]3x^{2} + 4 {x}^{2} + 7 = 7 {x}^{4} + 7[/tex]

Step-by-step explanation:

Because 3x² and 4x² are like terms, they can be added together:

3+4=7

²+²=⁴

Therefore, it will be 7x⁴.

But 7x⁴ and 7 are not like terms. So it is just 7x⁴+7

Answer:

That is the answer. Let me know if you can't see it.

[tex]\huge\boxed{Hello!}[/tex]

5(3m+7)

Multiply 5 by every term inside the parentheses:

15m+35

8(-p+2)

-8p+16

4(7-2a)

28-8a

[tex]\huge\boxed{\boxed{\boxed{\bold{Hope\:this\:helps\:you!}}}}}[/tex]

[tex]\huge\bold{Good\:luck\:and\:enjoy\:your\:day!}[/tex]

[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]

Answer:

[tex]36x[/tex]

Step-by-step explanation:

[tex]\left(\frac{x^3}{x^2}\right)* \:6^2[/tex]

Apply exponent rule: [tex]\frac{x^a}{x^b}\:=\:x^{a-b}[/tex]

[tex]x^{3-2}*6^2[/tex]

[tex]x*6^2[/tex]

[tex]x*36[/tex]

[tex]36x[/tex]