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oee [108]
3 years ago
10

A class is playing a game called “Guess my Number,” in which the number is an integer. The teacher gives these clues for the unk

nown number.
4 + h ≤ 7 and h + 1 > 3

What is the value of the unknown number, h?
Mathematics
1 answer:
enyata [817]3 years ago
8 0

Answer:

h=3

Step-by-step explanation:

you want h alone on one side of the equation and you must do the same to both sides, 4-4 cancels out the 4, 7-4=3 so h is greater than or equal to 3, next, 1-1 cancels out 1, 3-1=2 so h>2, therefore h=3

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4x - 9y = -21<br> - 4x – 3y = 9
lapo4ka [179]

Answer:

(-3,1)

y= 1

x= -3

Step-by-step explanation:

4x-9y=-21

-4x-3y=9

solve the equation

4x=-21+9y

-4x-3y=9

substitute the value of 4x onto an equation

-1(-21+9y)-3y=9

multiply -1 to the numbers in parenthesis

-21+-9-3y=9

add -9 to 9 and put the negative on nine as a positive.

-21-3y=18

add -21 to 18 but since 21 is a negative the equation is subtraction.

-3y=-3

divide Both sides by -3

y=1

substitute the value of y into an equation

-4x-3•1=9

multiply 3 to 1

-4x-3=9

put -3 as a positive and add 3 to 9

-4x=12

divide both sides by -4

x= -3

(-3,1)

5 0
3 years ago
According to the American Academy of Ophthalmology, 25% of Americans have brown irises. A random survey of students at a local c
Tresset [83]

Answer:

2.49

Step-by-step explanation:

Given  X= 58

N = 175.

P = 25% = 0.25.

P' = \frac{X}{N} = \frac{58}{175} = 0.3314\\Z = \frac{P'-P}{\sqrt{\frac{pq}{N} } }

Now plugging the values we get

= \frac{0.3314-0.25}{\sqrt{\frac{0.25\times0.75}{175} } }

=2.49

8 0
3 years ago
Helpppp Plsssss Asap!! Show your work​
satela [25.4K]

Answer:

Step-by-step explanation:

The anwser is C

the inverse of 5x is x/5 and the inverse of +4 is -4 so the answer would be x-4/5

8 0
4 years ago
Read 2 more answers
A 2 digit number is 5 times its units digit. the sum of the digits is 7. find the number
astraxan [27]
X - tens digit
y - units digit

10x+y=5y\\&#10;x+y=7\\\\&#10;10x=4y\\&#10;x=7-y\\\\&#10;10(7-y)=4y\\&#10;70-10y=4y\\&#10;14y=70\\&#10;y=5\\\\&#10;x=7-5\\&#10;x=2\\\\&#10;10\cdot2+5=\boxed{25}
6 0
4 years ago
Please help mee!!! :(
xenn [34]

Answer:

3; 4; 5; 25; 25; Yes

6 0
3 years ago
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