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Troyanec [42]
3 years ago
15

Please help me idk this

Mathematics
2 answers:
Sergio [31]3 years ago
4 0
First take the fractions and find their common denominator:
\frac{1}{2} x 4 =\frac{4}{8}

Now you can add the fractions:
\frac{4}{8} + \frac{1}{8} = \frac{5}{8}

Now add your whole numbers and the fraction:
1+1= 2 >> 2+\frac{5}{8} = 2\frac{5}{8} yards

Now subract 2\frac{5}{8} from 5:
5-2\frac{5}{8} =2\frac{3}{8} yards
harina [27]3 years ago
3 0
First, we add the amounts she used.

1 1/2 + 1 1/8
We need a common denominator for the fractions. It is 8.

1 1/2 + 1 1/8 = 1 4/8 + 1 1/8 = 2 5/8

She used 2 5/8 yd.

Now we subtract 2 5/8 yd from 5 yd to find out how much she has left.

5 - 2 5/8

There is no fraction with the 5, so we borrow 1 from 5, leaving 4, and we write the 1 as fraction 8/8. Then we subtract the whole numbers, and we subtract the fractions.


5 - 2 5/8 = 4 8/8 - 2 5/8 = 2 3/8

Answer: She has 2 3/8 yd left.
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Expression.is of what number? Write a division expression to match this question.
nirvana33 [79]

3/4 is 1/3 of what number?

For this problem we just need to do the following division:

\frac{x}{3}=\frac{3}{4}

And we can solve for the value of x desired and we got multiplying both sides by 3:

x=3(\frac{3}{4})=\frac{9}{4}

So then we can conclude that 3/4 is 1/3 of 9/4

Answer: 9/4

Expression:

\frac{x}{3}=\frac{3}{4}

3 0
1 year ago
if you subtract 18 from my number and multipy the difference by -3 the result is -51 what is the number
NNADVOKAT [17]

Answer:

35

Step-by-step explanation:

x-18=y

y*-3=-51

y=17

x-18=17

17+18=x

x=35

3 0
3 years ago
-8(8 - x) = 4/5(x + 10)
Vedmedyk [2.9K]

Answer:

x = 10

Step-by-step explanation:

Solve for x:

-8 (8 - x) = (4 (x + 10))/5

Multiply both sides by 5:

-8×5 (8 - x) = (5×4 (x + 10))/5

(5×4 (x + 10))/5 = 5/5×4 (x + 10) = 4 (x + 10):

-8×5 (8 - x) = 4 (x + 10)

5 (-8) = -40:

-40 (8 - x) = 4 (x + 10)

Expand out terms of the left hand side:

40 x - 320 = 4 (x + 10)

Expand out terms of the right hand side:

40 x - 320 = 4 x + 40

Subtract 4 x from both sides:

(40 x - 4 x) - 320 = (4 x - 4 x) + 40

40 x - 4 x = 36 x:

36 x - 320 = (4 x - 4 x) + 40

4 x - 4 x = 0:

36 x - 320 = 40

Add 320 to both sides:

36 x + (320 - 320) = 320 + 40

320 - 320 = 0:

36 x = 40 + 320

40 + 320 = 360:

36 x = 360

Divide both sides of 36 x = 360 by 36:

(36 x)/36 = 360/36

36/36 = 1:

x = 360/36

The gcd of 360 and 36 is 36, so 360/36 = (36×10)/(36×1) = 36/36×10 = 10:

Answer:  x = 10

7 0
3 years ago
Helpppppppppppppppppppppppppppppppppppppp meeeeeeeeeeeeeeee please
laila [671]

Answer:

8+7r+2q

Is the required answer.

7 0
3 years ago
Solve x2-14x+21=0 by completing the square
ankoles [38]
x^2-14x+21=0\\\\x^2-2x\cdot7+7^2-7^2+21=0\\\\(x-7)^2-49+21=0\\\\(x-7)^2-28=0\\\\(x-7)^2=28\iff x-7=-\sqrt{28}\ \vee\ x-7=\sqrt{28}\\\\x=7-\sqrt{4\cdot7}\ \vee\ x=7+\sqrt{4\cdot7}\\\\x=7-2\sqrt7\ \vee\ x=7+2\sqrt7
4 0
3 years ago
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