MATHEMATICS MIDDLE SCHOOL

Two increased by the product of a number and 9 is greater than or equal to 25.

Answers

Answer 1
Answer:

Answer:

x≥2.56

Step-by-step explanation:

first we can write the inequality

2+9x≥25

we can now solve this with algebra

9x≥23

x≥2.56

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madison bought a new phone at 20% off the original price. If she paid $320 what was the original price of the phone

Answers

Answer:

$400

Step-by-step explanation:

Hi we have to use the Rule of the Three

The price that we paid represents the 80% of the original prize

Hence we have that

$320⇒80% (.8)

$x⇒100%(.1)

As we know we have to multiply diagonally and divide with the one in the corner

So we have (320)*(1 )=320 and then divide (320)/(.8)=400

Hence the original price was $400

Answer:

400

Step-by-step explanation:

320/(1-0.2)=Original price

400x0.8=320

Identify the two-dimensional shape of the cross section if a cube is sliced horizontally. Then identify the two-dimensional shape of the cross section ifa cube is sliced vertically.
Explain why the shape are the same or different

Answers

[see the pictures attached for a better understanding !]

Horizontal cross section : we get a square in the horizontal plane, its side is the same as the cube's.

Vertical cross section : we get a square in the vertical plane, its side is the same as the cube's.

Hence, the two shapes are the same (two squares with same sides are the same)

-- First of all, you haven't specified how the cube itself is situated. 
That would make a difference.
Is it sitting flat on one of its faces ? 
Standing on one vertex ?
Standing on one edge ?

-- If I assume that the cube is sitting on a level, horizontal table, flat
on one of its faces parallel to the table and in contact with it, then ANY
slice that is parallel to any face, whether horizontal or vertical, reveals
a square cross section, congruent to any face of the cube.

Annaka used partial quotients to divide 145 by 5. What can be a partial quotient?

Answers

In partial-quotients division, it takes several steps to find the quotient. At each step, you find a partial answer (called a partial quotient); then you find the product of the partial quotient and divisor and subtract it from the dividend. Finally, you add all the partial quotients to find the final quotient.

See the attached figure.

So, the answer is ⇒ 29

What is 72 % of 350 friends

Answers

'is' in mathematics means equal
'of' in mathematics means multiplication

72% can also be written as 72/100

We are solving for the variable 'x'

x = (72)/(100) * 350\n\nx = 72 * 3.5\n\n\boxed{\bf{x = 252}}
350 friends* (72/100)= 252 friends.

Final answer: 252 friends~

A group of friends went out for dinner and decided to split the cost of the bill equally. If each person contributed $32, the friends would have $18 more than they needed for the bill but not enough for a 15% tip. If each person contributed $35, they would cover the bill and a 15% tip and have $6.30 left over. How much was the bill, and how many friends went out for dinner?

Answers

Answer:

The number of friends that went out for dinner is 8

And their bill is $238

Step-by-step explanation:

Let's assume that the number of friends that went out for dinner to be x

And the bill for the dinner to be y

If each person contributed $32 and paid off the bill,they will have a balance of $18

32x - 18 = y_____equation 1

If each person contributed $35 and paid off the bill and also 15% tip,they will have a balance of $6.30

35x - 6.3 = y + (15% of y)

35x - 6.3 = y + (3y/20)

Open up the bracket

35x - 6.3 =(20y + 3y)/20

700x - 126 = 23y______equation 2

From equation 1,y = 32x - 18

Put the above in equation 2 and we have

700x - 126 = 23(32x -18)

700x - 126 = 736x - 414

collect like terms

36x = 288

x = 288/36

x = 8

Remember that equation 1 says that y = 32x - 18 and we now know that x = 8 .

Substitute and we have

(32 × 8) - 18

y = 238

The number of friends that went out for dinner is 8

And their bill is $238

Show how to make a ten to solve 13-7 write the number sentence

Answers

10 pluse 3 - 7 thats all
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Factor. 25x^12-36y^14
-2(2p - 4) = 3(p+12)
Variable c is 9 more than variable w. Variable c is also 3 less than variable w. Which pair of equations best models the relationship between c and w?A.        c = w − 9 c = 4w + 3 B.            c = w + 9 c = w − 3 C.      w = c + 9 w = c − 3 D.    w = c − 9 w = 4c + 3
2.7 divided by 33.48