MATHEMATICS
HIGH SCHOOL

Answer: Supplementary angles add up to 180 degrees. Suppose the supplement of 70 degrees is x.

therefore the sum of our angles will be:

x+70=180

solving for x we get:

x=180-70

x=80°

hence the value of the supplement of 70° is 80°

therefore the sum of our angles will be:

x+70=180

solving for x we get:

x=180-70

x=80°

hence the value of the supplement of 70° is 80°

MIDDLE SCHOOL

How do you solve 7a+10=2a

Subtract 7a from both sides giving you 10=-5a and divide everything by 5. This gives you a=-2

7a+10=2a -7a. -7a 10=-5a Divide by -5 and u get ur answer

MIDDLE SCHOOL

Olve the two-step equation and identify the steps.

2 = − 7

4

+ 1

4

x

Answer:

x = 5.142

Step-by-step explanation:

2=-74+14x

if you want to make x the subject (work out its value), you need to single out x

1) the first thing that we can do is get rid of the -74

2) do this by adding it on to both sides of the equation. This is called the inverse

2+-74=-72 -74+14x=14x

-72=14x

3) to get x on its own, we now need to get rid of the 14

REMEMBER: 14x = 14×x

4) We do the inverse by dividing both sides by 14

-72÷14=-5.142...

its surprising that its not an integer

5.142=x

x=5.142

PLEASE LET ME KNOW IF THIS IS CORRECT

MIDDLE SCHOOL

In a dealership vehicle storage, there are 4 sections of vehicles, 10 rows per section, and 1,200 vehicles for sale. Answer #5-6. 5. If the vehicles are divided evenly among the sections, how many vehicles are in each section? 6. If the vehicles are divided evenly among the rows in each section, how many vehicles are in each row?

Probably nonn existent

HIGH SCHOOL

Nika baked three cakes. Each cake needed 17/4 cups of flour. Which expression shows the best estimate of the number of cups of flour that Nika used? A. 4 + 4 + 4 = 12

B. 5 + 5 + 5 = 15

C. 4 + 4 + 4 = 16

D. 17 + 17 + 17 = 51

First we need to find out what 17/4 is.

17/4 = 4 1/4

so each cake needs 4 1/4 cups of flower.

Now, the question asks what the best estimate of the total number of cups is.

It could be A or C because 4 1/4 is closer to 4, but...

we need to figure out if 4 1/4 + 4 1/4 + 4 1/4 (we need to make three cakes) is closer to 12 or 16.

4 1/4 + 4 1/4 + 4 1/4 = 12 3/4

Ask yourself: is 12 3/4 closer to 12 or 16?

12 3/4 is closer to 12 so the answer is A.

17/4 = 4 1/4

so each cake needs 4 1/4 cups of flower.

Now, the question asks what the best estimate of the total number of cups is.

It could be A or C because 4 1/4 is closer to 4, but...

we need to figure out if 4 1/4 + 4 1/4 + 4 1/4 (we need to make three cakes) is closer to 12 or 16.

4 1/4 + 4 1/4 + 4 1/4 = 12 3/4

Ask yourself: is 12 3/4 closer to 12 or 16?

12 3/4 is closer to 12 so the answer is A.

Answer:

A

Step-by-step explanation:

HIGH SCHOOL

A wheel made 45 revolutions in 1 minute. At that rate, how many revolutions would it make in 15 minutes?

A wheel would make 675 revolutions in 15 minutes.

Since the wheel makes 45 revolutions in 1 minute, and the problems asks how many revolutions it would make in 15 minutes, you would multiply the rate by the time:

45*15=675.

Since the wheel makes 45 revolutions in 1 minute, and the problems asks how many revolutions it would make in 15 minutes, you would multiply the rate by the time:

45*15=675.

MIDDLE SCHOOL

What fraction is closest to -1/2

fraction is closest to -1/2:

These are...

These are...

HIGH SCHOOL

Given 2 events a and b, and that p(a)=0.30, p(b)=0.45, p(a u b)=0.60. find the probability p(a∩b).

P(a U b) = p(a) + p(b) - p(a ∩ b)

p(a ∩ b) = p(a) + p(b) - p(a U b)

I let you do the maths :)

p(a ∩ b) = p(a) + p(b) - p(a U b)

I let you do the maths :)

MIDDLE SCHOOL

The number of different cars sold in some country rose from 210 in 1997 to 277 in 2007. Find the percent increase. Round to the nearest whole percent.

Answer:

70%

Step-by-step explanation:

What I did was,I counted by tens on my fingers until I got to 60 and I added 7 to that and I rounded It to the nearest whole percent which was 70 because,It was closest to 67.

MIDDLE SCHOOL

Which set of ordered pairs does NOT represent a function? A)

(0, 1), (2, 2), (4, 8), (-2, 7), (5, 8)

B)

(0, 1), (2, 2), (4, 8), (2, 7), (5, 8), (7, 9)

C)

(-3, 6), (2, 7), (0, 5), (1, 5), (4, 9), (5, 4)

D)

(-4, 2), (-3, 2), (-2, 2), (-1, 2), (0, 2), (1, 2)

Answer:

Option B is correct! Because for the x=2, there are two y values. Below is a detailed explanation.

Step-by-step explanation:

Function:

A function does not have two different outputs(y) for the same input(x).

Let's analyze each option.

For option A:

The x values are {0,2,4,-2,5}

Here none of the x values are repeated.

So, it represents a function.

For option B:

The x values are {0,2,4,2,5,7}

Here the x value '2' is repeated two times.

According to the explanation of the function, when x=2, the 'y' can not be equal to 2, 7.

So, this is not a function.

You can learn more:

brainly.com/question/10564333.

IT is b because you cant repeat a number in the (x) for it to be a function. 2 is repeated.