MATHEMATICS MIDDLE SCHOOL

Choose the number that is a solution of the inequality: a + 9 < 5 A) -2
B) 5
C) 0
D) -5
( i kept getting -4 am i wrong or are the choices wrong?)

Answers

Answer 1
Answer:

Answer:

d: -5

Step-by-step explanation:

when you plug in all the answer choices -5 is the only true answer

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Write a whole number and a fraction greater than q to name the part filled. think: 1 carton = 1

Answers

q=4 wholes because it would be 12/3 and u reduce it by 3/3 and you get 4/1 and that's a improper fraction so it will be 4 wholes

A crystal shaped like a rectangular prism has a volume of 2.88 cubic centimeters. The crystal has a square base with an area of 1.44 square centimeters. How tall is the crystal? Explain your thinking.

Answers

V=LWH
LW=area of base
V=H*areaofbase
V=2.88
areaofbase=1.44
2.88=height times 1.44
divide 1.44
2=height
2 centimeters

Why are SI units helpful for describing objects? A.
SI units make more sense than English units.





B.
SI units are standardized and understood globally.





C.
SI units are understood to be a sign of scientific accuracy.





D.
SI units are more reliable

Answers

the answer is C they are more accurate

what is the equation, in slope- intercept form, of the line that contains the points (-3,4) and (5,7)

Answers

Answer:

y = (3)/(8) x + (41)/(8)

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

To calculate the slope use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 3, 4) and (x₂, y₂ ) = (5, 7)

m = (7-4)/(5+3) = (3)/(8), hence

y = (3)/(8) x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

using (5, 7 ), then

7 = (15)/(8) + c ⇒ c = 7 - (15)/(8) = (41)/(8)

y = (3)/(8) x + (41)/(8) ← equation in slope-intercept form

Can someone help me with this?

Answers

Here:
perimeter = 174 units
or, 2(PQ+QR) = 174
or, 2(4y+3+3y) = 174
or, 2(7y+3) = 174
or, 14y+6 = 174
or, 14y = 174 - 6
or, y = 168 / 14
Therefore, y = 12
So,
PQ = 4 x 12 + 3
= 51 units

at a clothing store, jackets are on sale for 30% off.sale tax is 5%.which expression will calculate the total cost of a jacket with an original price of x

Answers

The expression to calculate the total cost of a jacket with an original price of x is 0.7x + 5 % of 0.7x

Solution:

Given that at a clothing store, jackets are on sale for 30% off

Sales is 5 %

To find: Expression to calculate the total cost of jacket

Let "x" be the original price of Jacket

Price of jacket after offer = original price of Jacket - 30 % of original price

Price of jacket after offer = x - 30 % of x

Price of jacket after offer = x - (30)/(100)x = 0.7x

The total cost of jacket is sum of price of jacket after offer and sales tax

total cost of jacket = price of jacket after offer + sales tax

total cost of jacket = 0.7x + 5 % of 0.7x

Thus the expression to calculate the total cost of a jacket with an original price of x is 0.7x + 5 % of 0.7x
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