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madam [21]
3 years ago
7

10 points help please help me no understand math

Mathematics
1 answer:
guajiro [1.7K]3 years ago
7 0

Answer:

TX

Step-by-step explanation:

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X–2 1/2=6 3/4. X=?<br><br> x – 3.23 = 0.77. X=?
Over [174]

Answer:

x= 105/4

x=4

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If a rectangle has perimeter of 70 a length of x and a width of x-9, find the value of the length of a rectangle
iren2701 [21]

Answer:

length = 22

width = 13

Step-by-step explanation:

Perimeter of a rectangle is given by the formula

P =2(l+w)

we know the length is x

width is x-9

P =70

Substituting this into the equation

70 = 2(x+x-9)

Combining like terms

70=2(2x-9)

Distributing the 2

70 = 4x-18

Adding 18 to each side

70+18 = 4x-18+18

88 = 4x

Divide by 4

88/4 = 4x/4

22= x

we know the length is x

length = 22

width is x-9

width = 22-9= 13

7 0
4 years ago
Read 2 more answers
The length of a rectangle is 5 cm more than twice the width. The perimeter of the rectangle is 33 cm. Find the dimensions of the
tatiyna
2w+2(5+2w)=33
2w+10+4w=33
6w=22
w=11/3 or 3 and 2/3
7 0
3 years ago
What is the answer to 8/6+ - 9/5
Sindrei [870]

Answer:

-7/15

Step-by-step explanation:

get red of the addition and subtract the two fractions

3 0
4 years ago
Joey answered 21 out of 25 questions correctly on a quiz what percent of his answers were correct
DedPeter [7]

Answer:

84%

Step-by-step explanation:

Joey gives 21 correct answers out of 25 questions on a quiz.

We have to calculate the percent of Joey's correct answer.

Now, percentage of x out of y is given by the simple expression \frac{x}{y} \times 100%.

Hence, the percentage of correct answer given by Joey is given by  

\frac{21}{25} \times 100 = 84%. ( Answer )

8 0
3 years ago
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