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Volgvan
4 years ago
11

What does 30 ≤ x + 10 ≤ 80 simplify to

Mathematics
1 answer:
MakcuM [25]4 years ago
4 0

Answer:

20 ≤ x ≤  70

Step-by-step explanation:

Given that:

30 ≤ x + 10 ≤ 80

By solving the left half inequality first:

30 ≤ x + 10

Subtracting 10 from both sides:

30 - 10  ≤ x + 10 -10

20  ≤ x

Now solving inequality of right half:

x + 10 ≤ 80

Subtracting 10 from both sides:

x + 10 -10 ≤ 80 - 10

x ≤  70

So after simplification we get:

20 ≤ x ≤  70

I hope it will help you!

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Which is equivalent to 4 (9) 1/2 ^x<br> O 9^2x<br> O 9 1/8 ^x<br> O (9)^x<br> O 6(9) ^x
fgiga [73]

Answer:

36/2^x

Step-by-step explanation:

= 4 X 9 x 1/2^x

= 36/2^x

8 0
3 years ago
Trisha needs 41/2 yards of fabric to do a project. If she already has2/3 of a yard of fabric, what is the minimum amount of fabr
RUDIKE [14]
We know that
<span>4 1/2----------> (4*2+1)/2--------> 9/2
(2/3)*(9/2)------> 18/6--------->3 yd  (</span><span>this is what Trisha has )</span>
<span>if she has (2/3) she only needs (1/3)
</span><span>
[</span>the minimum amount of fabric she must buy]=(9/2)*(1/3)=1.5 yd

the answer is 
the minimum amount of fabric she must buy is 1.5 yd
8 0
3 years ago
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
LUCKY_DIMON [66]

Answer:  d

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pretty sure I did it right this time

7 0
3 years ago
Read 2 more answers
A group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. Use the range rule of thumb
kompoz [17]

Answer:

The adult male foot length of 24.3 cm is significantly low.

Step-by-step explanation:

We have been given that a group of adult males has foot lengths with a mean of 26.88 cm and a standard deviation of 1.13 cm. We are asked to find the range rule of thumb to determine whether he adult male foot length of 24.3 cm significantly low or significantly high.

The range rule of thumb states that usual values in a normal standard deviation lies within 2 standard deviation from mean that is \mu-2\sigma, where \mu=\text{ Mean and }\sigma=\text{Standard deviation}.

Let us find the range of possible values.

28.88-2(1.13)

28.88-2.26

26.62

Since 24.3 is less than lower value of range (26.62), therefore, the adult male foot length of 24.3 cm is significantly low.

7 0
3 years ago
A father is four times as old as his son. In 3 years, the father will be three times as old as his son. How old is each now?
matrenka [14]

4x+3=3(x+3)

4x+3=3x+9

4x-3x=9-3

x=6

So The Father is 24 and the Son is 6

8 0
3 years ago
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