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3 years ago

Help plz I don’t understand #geometry

Mathematics

1 answer:

Bingel [31]3 years ago

7 0

1. x=5
Explanation:
2(2x-3)=x+9
4x-6=x+9
-x -x
3x=15
x=5

2. x=-9
Explanation:
2(x+19)=x+29
2x+38=x+29
-2x -2x
9=-x
-9=x

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What is 513 + _ + 130 = 764? what is the missing number and can u pls do a explantation

dmitriy555 [2]

Answer:

121

Step-by-step explanation:

The missing number is 121. I got this by doing 764-130-513=121. You would do this because you are trying to find the number that would allow 130 and 513 to add up to 764.

Another way to look at this problem is 513+130= 643

764-643=121

In conclusion, 513+121+130=764

4 0

3 years ago

Read 2 more answers

.<br> 7-9p≥7 or 2p - 9> 11

My name is Ann [436]

Answer:

2p-9>

Step-by-step explanation:

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2 years ago

Convert these please

Nezavi [6.7K]

Answer:

22.18mL
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15.22mL
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104 oz
.12 g
45.44 lbs
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4 0

3 years ago

80 planes are tested. one fifth fy more than 10 metres. one half fly less than 5 metres. how many planes fly between 5 and 10 me

zubka84 [21]

Answer:

Step-by-step explanation:

80/5=16

80/2=40

16+40=56

80-56=24

8 0

2 years ago

Please help me with it is for homework<br><br> I really need help please help me

Solnce55 [7]

Answer:

See explanation

Step-by-step explanation:

Given two expressions:

$2(s+0.5)+2(s+1.5)$

and

$4\left(\dfrac{1}{2}s+\dfrac{1}{4}s\right)+4$

a. When $s=0,$

then

$2(s+0.5)+2(s+1.5)=2(0+0.5)+2(0+1.5)=1+3=4$

and

$4\left(\dfrac{1}{2}s+\dfrac{1}{4}s\right)+4=4\left(\dfrac{1}{2}\cdot 0+\dfrac{1}{4}\cdot 0\right)+4=4$

b. When $s=12,$

then

$2(s+0.5)+2(s+1.5)=2(12+0.5)+2(12+1.5)=2\cdot 12.5+2\cdot 13.5=25+27=52$

and

$4\left(\dfrac{1}{2}s+\dfrac{1}{4}s\right)+4=4\left(\dfrac{1}{2}\cdot 12+\dfrac{1}{4}\cdot 12\right)+4=4(6+3)+4=4\cdot 9+4=36+6=40$

c. Since the value of both expressions at s = 12 are different, the expressions are not equivalent.

6 0

3 years ago