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morpeh [17]
3 years ago
12

X over 85 = 72 over 100

Mathematics
1 answer:
Basile [38]3 years ago
5 0

Answer:

x/85=72/100

2 can devide 7 and 100

x/85=18/25

cross multiply

25×x=18×85

25×=1530

×=306/5

×=61.2

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Your friend says that the absolute value equation | 3x+8 |-9=-5 has no solution because the constant
sineoko [7]

Answer:

Incorrect

Step-by-step explanation:

We are given the equation:

\displaystyle \large{|3x+8|-9=-5}

Add both sides by 9.

\displaystyle \large{|3x+8|-9 + 9=-5 + 9} \\ \displaystyle \large{|3x+8|=4}

When we want to tell if the absolute equation has solutions or not, we have to simplify in this form first: or isolate the absolute sign.

\displaystyle \large{ |ax + b|  = c}

If c ≥ 0, the equation has solutions.

If c < 0, the equation does not have solutions.

Therefore, it does not always matter if the constant on right side is in negative because if there is a number on the left side then there is a chance that the equation has solutions.

From |3x+8| = 4 is equivalent |3x+8|-9=-5 and the right side is 4 which is positive.

Hence, the equation does have a solution!

3 0
3 years ago
Jacob is asked to solve the follow problem: "Kayla is 9 years older than twice Hannah’s age. If the difference in their ages is
tatiyna

Answer:

Step-by-step explanation:

k = 2h+9

h+16=k

h+16=2h+9

-h = -7

h = 7

hannah is 7 and kayla is 23

jacob is wrong because if u do 16*2+7 it’s 39 and 39-16 does not equal 16

6 0
3 years ago
If 4x²+ y²= 40 and xy = 6 , find the value of (2x − y).
ziro4ka [17]

answer is 2x+y=±8

hopes this helps u

8 0
3 years ago
Read 2 more answers
In a classroom of 3333 students, the ratio of boys to girls is 3:83:8. How many boys are in the class?
Paladinen [302]
3x+8x=3333
11x=3333
X= 303
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6 0
4 years ago
(3x + 3) (2x − 2)<br> Please help me
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The answer is 6(x^2 -1) I have provided a picture with my work and the answer

8 0
3 years ago
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