MATHEMATICS HIGH SCHOOL

1. The value x = 4 is a solution to all of the following equations except which?(1) 2x + 7 =15
(3) x+5 = 3x-3
(2) 3(x+1)= x +11
(4) x+12= 5x-2

Answers

Answer 1
Answer:

Answer:

.........................

4
Answer 2
Answer:

Answer:

Step-by-step explanation:

2 and 4

Related Questions

Can someone please help me with this math question PLEASE HELP THIS IS URGENT
When an apple is dropped from a tower 256 feet high, the function h(t) =-167 +256 models the height of theapple, in feet, after t seconds. Determine, algebraically, the number of seconds it takes the apple to hit the ground.
Simplify. -15-(-3)+6
A deck of 52 cards contains four aces. If the cards are shuffled and distributed in a random manner to four players so that each player receives 13 cards, what is the probability that all four aces will be received by the same player?
What will be the linear equation for the shown table?​

Determine the measure of angle a. PLEASE HELP ASAP!a.64 degrees
b.45 degrees
c.88 degrees
d.42 degrees

Answers

Answer:

D

Step-by-step explanation:

Remember that the sum of the interior angles of a triangle will always total 180.

Therefore:

(9x+6)+(74)+(16x)=180\n

Let’s solve for x:

Combine LIke Terms:

(9x+16x)+(74+6)=180

Add:

25x+80=180

Subtract 80 from both sides:

25x=100

Divide both sides by 25:

x=4

Therefore, the value of x is 4.

Now, to find A, we can substitute it for A.

A is measured by:

\angle A=9x+6

Substitute 4 for x and evaluate:

\angle A=9(4)+6=36+6=42\textdegree

Hence, our answer is D.

Shelly ran 21/4 miles. Lynne ran 31/8 miles. Who ran farther and by how much

Answers

 Lynne ran farther by 7/8 miles.
LYNNE RAN BY 7/8 MILES.

In a day, Robin spends 6 hours at school, sleeps for 9 hours, plays for 3 hours, and spends the rest of the time doing other things. Robin spends ______% of the day playing and _____% of the day doing things other than sleeping, playing, or going to school.

Answers

Answer:

Robin spends 12.5% of the day playing and 25% of the day doing things other than sleeping, playing, or going to school.

Step-by-step explanation:

In a day, Robin spends his time :

At school = 6 hours

Sleeps = 9 hours

Plays = 3 hours

Total time spent = 6 + 9 + 3 = 18 hours

Time left = 24 - 18 = 6 hours

doing other things = 6 hours

Now we have to calculate what % of the day he is playing and doing other things.

He spends 3 hours in playing = 3 hours of 24 hours

= 3 ÷ 24 × 100 = 12.5%

He spends 6 hours in doing other things = 6 hours of 24 hours

= 6 ÷ 24 × 100 = 25%

Robin spends 12.5% of the day playing and 25% of the day doing things other than sleeping, playing, or going to school.
6hrs = school
9hrs = sleeps              = 18hrs // 24hrs      ----6hrs left
3hrs = plays

6hrs = other things


playing = 12.5% -- 3/24                 3/24*100
other things = 25% -- 6/24             6/24*100

You have $59.95 in your wallet and want to buy some new CDs. If the CDs are $11.99 each, what number of CDs, x, can you buy? Write and solve an inequality.

Answers

x - number of CDs;
An inequality is:
x · $11.99 ≤ $59.95
x ≤ $59.95 : $11.99
x ≤ 5
Answer:
5 CDs

Answer:

number of CDs can you buy is 5 or less than 5

Step-by-step explanation:

Here, x represents the number of CDs buy.

As per the statement:

If the CDs are $11.99 each

⇒Cost of x CDs  = 11.99x

It is also given that:

You have $59.95 in your wallet and want to buy some new CDs

⇒11.99x \leq 59.95

We get an inequality:

11.99x \leq 59.95

Solve for x:

Divide both sides by 11.99 we have;

x \leq (59.95)/(11.99) = 5

x \leq 5

Therefore, number of CDs can you buy is : x \leq 5

Skill: Calculate the surface area of a pyramid ​

Answers

Answer:

44.84

Step-by-step explanation:

The formula for this is lw + l √(w/2)^2 + h^2 + w * √(l/2)^2 = h^2

After that, you just input the values to get a total of 44.84 inches

Answer:

10: 44.84

11: 149.84

Step-by-step explanation:

There are 63 new houses being built in a neighborhood. last month 1/3 of them were sold. this month 2/7 of the remaining houses were sold. How many houses are left to be sold?

Answers

Answer: 49 houses

Step-by-step explanation:

63 x 1/3 =63/3= 21 houses were sold last month. 63 - 21 = 42 houses remained unsold last month. 42 x 2/3 =[42 x 2] / 3 = 84 / 3 = 28 houses were sold this month. 21 + 28 = 49 houses sold altogether.
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