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faust18 [17]
2 years ago
10

I need help please anybody this so due tomorrow, help, help, help, sorry its sideways. anybody please.

Mathematics
2 answers:
adell [148]2 years ago
8 0
Okay what we need to do first is add the whole numbers.
1 1/3 and 2 1/4 and the whole numbers are 1 and 2.
1+2 is 3.

Now to add 1/3 and 1/4, but something is wrong. We need the denominator to be the same. 
So we need to find the same denominator.
We need to multiply the denominators by each other.
So the denominators are 3 and 4 of 1/3 and 1/4.
3*4 and 4*3 is both 12.
What you do to the bottom is what you need to the top the numerator.
1*4 is 4 and 1*3 is 3.
4/12 + 3/12.

Since the denominators are the same don't add those together keep them the same.
4/12 + 3/12 = 7/12
Now add the whole number 3 to 7/12
3 7/12 is your answer.
olga_2 [115]2 years ago
8 0
The answer to your question is: 7/12
Hope this helps! (:
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7x+2y=4 <br> y=x+1<br> Solve the system of equations.<br> (1/3,4/3)<br> (2/9,11,9)<br> no solution
Lunna [17]

Answer: SECOND OPTION

Step-by-step explanation:

You can solve the system of equations by the method of substitution:

- You must susbtitute the second equation into the first equation and solve or x:

7x+2(x+1)=4\\7x+2x+2=4\\9x=4-2\\9x=2\\x=\frac{2}{9}

- Now, you must susbtitute the value of x obtained above into the second equation to calculate the value of y. Then, you have:

y=\frac{2}{9}+1\\\\y=\frac{2+9}{9}\\\\y=\frac{11}{9}

Therefore, you obtain:

(\frac{2}{9},\frac{11}{9})

4 0
3 years ago
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Solve the system of equations - 8x - 5y = -13 and - 4x – 5y = 11 by<br> combining the equations.
Citrus2011 [14]

Answer:

(6,-7)

Step-by-step explanation:

subtract them:

-8x - 5y = -13

-4x - 5y = 11

you get

-4x = -24

so x = 6

plug x into the second equation:

-24 - 5y = 11

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y = -7

so your solution is (6,-7).

4 0
3 years ago
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Leslie has a voucher worth $5 coupon from Wal-Mart.She visits the store and purchases a wallet that amounted to double the price
jasenka [17]

Answer:

The Cost of wallet was $26.30.

Step-by-step explanation:

Given:

Total billed after redeeming voucher = $34.45

Voucher worth = $5

We need to find the cost of Wallet.

Solution:

Let the amount paid for groceries be 'x'.

Now Given:

She purchases a wallet that amounted to double the price she paid for the groceries she bought.

Cost of wallet = 2x

Now to find the cost of wallet we will consider the amount before redeeming the voucher.

Hence Total bill before redeeming the voucher = \$34.45+\$5=\$39.45

Now We can say that;

Total bill is equal to sum of Cost of wallet and Cost of groceries.

framing in equation form we get;

x+2x=39.45\\\\3x=39.45

Dividing both side by 3 we get;

\frac{3x}{3}=\frac{39.45}{3}\\\\x=\$13.15

Cost paid for groceries = $13.15

Cost paid for wallet = 2x=2\times 13.15 =\$26.30

Hence the Cost of wallet was $26.30.

6 0
3 years ago
I need help solving for x
Vlada [557]

Answer:

7.5

Step-by-step explanation:

draw the triangles separately then write a fraction for the small one x/6 and 10/8 then to get rid of the 6 to get x by itself you multiply by 6 to get X and for the other side you do 10/8 then multiply 1.25 times 6 to get 7.5

please add a thanks and a brainliest

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6 0
3 years ago
(Anderson, 1.14) Assume that P(A) = 0.4 and P(B) = 0.7. Making no further assumptions on A and B, show that P(A ∩ B) satisfies 0
Goshia [24]

Answer with Step-by-step explanation:

We are given that

P(A)=0.4 and P(B)=0.7

We know that

P(A)+P(B)+P(A\cap B)=P(A\cup B)

We know that

Maximum value of P(A\cup B)=1 and minimum value of P(A\cup B)=0

0\leq P(A\cup B )\leq 1

0\leq P(A)+P(B)-P(A\cap B)\leq 1

0\leq 0.4+0.7-P(A\cap B)\leq 1

0\leq 1.1-P(A\cap B)\leq 1

0\leq 1.1-P(A\cap B)

P(A\cap B)\leq 1.1

It is not possible that P(A\cap B) is equal to 1.1

1.1-P(A\cap B)\leq 1

-P(A\cap B)\leq 1-1.1=-0.1

Multiply by (-1) on both sides

P(A\cap B)\geq 0.1

Again, P(A\cup B)\geq P(B)

0.4+0.7-P(A\cap B)\geq 0.7

1.1-P(A\cap B)\geq 0.7

-P(A\cap B)\geq -1.1+0.7=-0.4

Multiply by (-1) on both sides

P(A\cap B)\leq 0.4

Hence, 0.1\leq P(A\cap B)\leq 0.4

3 0
3 years ago
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